National Power System Expansion Plan

Transcription

National Power System Expansion Plan
National Transmission and Despatch Company Limited
National Power System
Expansion Plan
2011 - 2030
Final Report
Annexure 4: Disco Transmission
Expansion Plan
504760-01-A4
2011
Prepared by
SNC-Lavalin
SNC
Lavalin International Inc.
Inc
in association with
National Engineering Services Pakistan (PVT) Limited
NOTICE
This document contains the expression of the professional opinion of SNC-Lavalin Inc. (“SLI”) as
to the matters set out herein, using its professional judgment and reasonable care. It is to be
read in the context of the agreement dated October 4, 2010 (the “Agreement”) between SLI and
National Transmission and Despatch Company (the “Client”), and the methodology, procedures
and techniques used, SLI’s assumptions, and the circumstances and constraints under which its
mandate was performed. This document is written solely for the purpose stated in the
Agreement, and for the sole and exclusive benefit of the Client, whose remedies are limited to
those set out in the Agreement. This document is meant to be read as a whole, and sections or
parts thereof should thus not be read or relied upon out of context.
Unless expressly stated otherwise, assumptions, data and information supplied by, or gathered
from other sources (including the Client, other consultants, testing laboratories and equipment
suppliers, etc.) upon which SLI’s opinion as set out herein is based has not been verified by SLI;
SLI makes no representation as to its accuracy and disclaims all liability with respect thereto.
504760
© 2011 SNC-Lavalin Inc. All rights reserved
Confidential
T&D Division
National Power Systems Expansion Plan
LIST OF ABBREVIATIONS AND DEFINITIONS
Abbreviations:
ADB
Asian Development Bank
AEDB
Alternative Energy Development Board
cct-km
Circuit-kilometre
Consultant
SNC-Lavalin, Transmission and Distribution Group
DISCO
Distribution Company
DSM
Demand Side Management
GDP
Gross Domestic Product
GENCO
Generation Company
HPP
Hydel (or Hydro) Power Project
HSFO
High-Sulphur Furnace Oil
HVAC
High Voltage Alternating Current
HVDC
High Voltage Direct Current
IEEE
Institute of Electrical and Electronic Engineers
kA
Kilo-ampere
KESC
Karachi Electric Supply Company
km
Kilometre
KPT
Karachi Port Trust
kV
Kilovolt
MMcfd
Million cubic feet per day
MOU
Memorandum of Understanding
MT
Metric Tonnes
MTOE
Million Tons of Oil Equivalent
MVA
Mega volt-amperes
MWh
Megawatt-hour or 1,000 kilowatt-hours
NEPRA
National Electric Power Regulatory Authority
NESPAK
National Engineering Services Pakistan (Pvt) Limited
NPP
National Power Plan, prepared by Acres International Limited in 1994
NTDC
National Transmission and Despatch Company
OGDCL
Oil and Gas Development Company Limited
P.P.
Power Project
PAEC
Pakistan Atomic Energy Commission
PARCO
Pak-Arab Refining Company
PEPCO
Pakistan Electric Power Company
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National Power Systems Expansion Plan
PPIB
Private Power and Infrastructure Board
PPL
Pakistan Petroleum Limited
PQA
Port Qasim Authority
PSO
Pakistan State Oil
PSS/E
Power System Simulation
RFO
Residual Furnace Oil
SIL
Surge Impedance Load
SNGPL
Sui Northern Gas Pipeline Limited
SSGCL
Sui Southern Gas Company Limited
SYPCO
Generation planning software (System Production Costing)
TAVANIR
The Iranian Electric Utility
WAPDA
Water and Power Development Authority ii
National Power System Expansion Plan
TABLE OF CONTENTS
Disco Transmission Expansion Plan
1 Objectives .................................................................................................................. 1 2 Study Cases............................................................................................................... 2 3 Input Data .................................................................................................................. 2 4 Load Forecast ............................................................................................................ 3 5 Secondary Transmission Planning Criteria ................................................................ 5 6 Methodology .............................................................................................................. 6 7 Load Flow Study Results ........................................................................................... 7 7.1 Year-2015 Study Base Cases ........................................................................... 7 7.1.1 “PESCO & TESCO” Distribution System for Year-2015 .............................. 7 7.1.2 “IESCO” Distribution System for Year-2015 .............................................. 18 7.1.3 “GEPCO” Distribution System for Year-2015 ............................................ 22 7.1.4 “LESCO” Distribution System for Year-2015 ............................................. 25 7.1.5 “FESCO” Distribution System for Year-2015 ............................................. 28 7.1.6 “MEPCO” Distribution System for Year-2015 ............................................ 34 7.1.7 “HESCO & SEPCO” Distribution System for Year-2015 ........................... 42 7.1.8 Year-2016 Study Base Cases ................................................................... 62 7.1.9 “PESCO & TESCO” Distribution System for Year-2016 ............................ 62 7.1.10 “IESCO” Distribution System for Year-2016 .............................................. 67 7.1.11 “GEPCO” Distribution System for Year-2016 ............................................ 70 7.1.12 “LESCO” Distribution System for Year-2016 ............................................. 73 7.1.13 “FESCO” Distribution System for Year-2016 ............................................. 75 7.1.14 “MEPCO” Distribution System for Year-2016 ............................................ 79 7.1.15 “HESCO & SEPCO” Distribution System for Year-2016 ........................... 83 7.1.16 “QESCO” Distribution System for Year-2016 ............................................ 88 504760-01-A4
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7.1.17 Year-2018 Study Base Cases ................................................................... 91 7.1.18 “PESCO & TESCO” Distribution System for Year-2018 ............................ 91 7.1.19 “IESCO” Distribution System for Year-2018 ............................................ 100 7.1.20 “GEPCO” Distribution System for Year-2018 .......................................... 103 7.1.21 “LESCO” Distribution System for Year-2018 ........................................... 105 7.1.22 “FESCO” Distribution System for Year-2018 ........................................... 107 7.1.23 “MEPCO” Distribution System for Year-2018 .......................................... 111 7.1.24 “HESCO & SEPCO” Distribution System for Year-2018 ......................... 116 7.1.25 “QESCO” Distribution System for Year-2018 .......................................... 122 7.1.26 Year-2020 Study Base Cases ................................................................. 126 7.1.27 “PESCO & TESCO” Distribution System for Year-2020 .......................... 127 7.1.28 “IESCO” Distribution System for Year-2020 ............................................ 132 7.1.29 “GEPCO” Distribution System for Year-2020 .......................................... 135 7.1.30 “LESCO” Distribution System for Year-2020 ........................................... 138 7.1.31 “FESCO” Distribution System for Year-2020 ........................................... 141 7.1.32 “MEPCO” Distribution System for Year-2020 .......................................... 145 7.1.33 “HESCO & SEPCO” Distribution System for Year-2020 ......................... 150 7.1.34 “QESCO” Distribution System for Year-2020 .......................................... 159 7.2 Short Circuit Study for Year-2020 Base Case ............................................... 164 7.2.1 Assumptions ............................................................................................ 164 7.2.2 Short Circuit Study Results...................................................................... 164 7.2.3 “PESCO & TESCO” Short Circuit Calculations for Year-2020 ................ 165 7.2.4 “IESCO” Short Circuit Calculations for Year-2020 ................................... 166 7.2.5 “GEPCO” Short Circuit Calculations for Year-2020 ................................. 166 7.2.6 “LESCO” Short Circuit Calculations for Year-2020 .................................. 167 7.2.7 “FESCO” Short Circuit Calculations for Year-2020 ................................. 168 7.2.8 “MEPCO” Short Circuit Calculations for Year-2020 ................................. 168 504760-01-A4
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7.2.9 “HESCO” Short Circuit Calculations for Year-2020 ................................. 169 7.2.10 “QESCO” Short Circuit Calculations for Year-2020 ................................. 170 7.3 Cost Estimate ................................................................................................ 170 7.3.1 Unit Cost .................................................................................................. 170 7.3.2 Cost of Reinforcements ........................................................................... 171 7.4 Conclusions ................................................................................................... 173 7.5 Recommendations ........................................................................................ 174 LIST OF TABLES
Table 1 Load forecast: Non-Diversified DISCO Totals................................................. 4 Table 2 Load forecast: diversified DISCO totals .......................................................... 4 Table 3 Unit Cost for DISCO Systems Expansion ................................................... 171 Table 4 DISCOs Cost Estimate 2015-2020 in MPKR .............................................. 173 Table 5 DISCOs Cost Estimate 2015-2020 in MUSD .............................................. 173 504760-01-A4
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DISCO TRANSMISSION EXPANSION PLAN
1
OBJECTIVES
The already proposed distribution system upgrades in each of the DISCOs will be further
upgraded in coordination with the development of the National Power System Expansion
Plan (NPSEP). The additional reinforcements required at the secondary voltage levels
for the years 2015, 2016, 2018 and 2020 were identified for each DISCO. In addition, an
estimate of the capital investments required to accept the power as delivered on the high
voltage system and to transmit it to the load centres they serve was prepared working
closely with teams of counterparts from each DISCO.
The objective of the DISCO was to determine the reinforcement required during the
planning horizon, to evaluate the performance of the DISCO Secondary Transmission
System expansion plans in four study years of 2015, 2016, 2018 and 2020, as well as to
prepare an estimate of the investment costs.
This was accomplished through the following activities:
•
A load flow analysis was performed for each DISCO network based on the load
forecast at each study year and the local expansion plans using agreed upon
planning criteria. The required system reinforcements proposed were selected to
alleviate the bus voltage and/or line overloading problems in the most technically
and cost effective way.
•
The short circuit calculations were performed for each DISCO only for the last
developed year (Year 2020) to check the value of the fault current at each bus.
Any recorded short circuit problems encountered would be solved by
reconfiguring the system at these specific locations.
The specific tasks of the secondary transmission expansion plan were to:
•
Expand the 132 kV and 66 kV systems;
•
Identify the 132/11 kV and 66/11 kV new substations as well as extensions and
augmentations for the existing 132/11 kV and 66/11 kV transformers;
•
Verify that the 132 kV and 66 kV systems satisfy the planning criteria;
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•
Verify that the short circuit levels at the 132 kV and 66 kV systems are within the
permissible limits.
2
STUDY CASES
In the context of the master plan, the secondary transmission system expansion plan
provides the system upgrade required for the spot years 2015, 2016, 2018 and 2020 that
will allow the planned generation to serve the forecasted load under both normal and
contingency conditions.
While short circuit calculations were performed only for the year 2020 peak load case,
load flow analysis was performed for the following four peak load study years:
•
June 2015 peak load case
•
June 2016 peak load case
•
June 2018 peak load case
•
June 2020 peak load case
Each case has been analysed under both normal and contingency conditions. System
reinforcements including transmission lines and reactive power compensations were
defined as appropriate.
3
INPUT DATA
The following served as input data for the studies:
•
Existing 2010 or 2011 system data
•
Load forecasts, individual grid stations and DISCO peaks (diversified), up to the
year 2020
•
Planned/committed system expansions of DISCOs up to the year 2015
•
Load flow base cases for year 2010 and 2014 provided by NTDC
The above data / information were used for building the base cases for the future years
of 2015, 2016, 2018 and 2020.
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4
LOAD FORECAST
For each Distribution Company (DISCO), load forecast for each grid station was
developed as summarized in the following steps (more details are presented in the Load
Forecast Report):
a) Data used is the 11 kV feeder-wise and tariff category-wise sales. It also includes
the maximum demand of medium and large industries for the base year.
b) These sales are converted into peak demand using the load factors and diversity
factors.
c) Growth rate on each category is applied and spot load are added.
This way the peak demand of the next year at this grid station is forecasted. The
summation of these peak values is the non-diversified DISCO peak, as given in Table 1
(e.g. 29,839 MW by Year-2015). A coincidence factor would be applied to each DISCO
peak to get the diversified DISCO peak load, as given in Table 2 (e.g. 25,970 MW by
Year-2015). The later (diversified DISCO peak) is the value to be used in DISCO
transmission planning (66-132 kV network).
As can be seen from Tables 1 and 2, the average coincidence factor used for all
DISCOs was found to be 88%. A further coincidence factor among the DISCO peaks
would be applied to get the “System Peak” which is the value to be used on the
transmission level (220 kV and higher). This coincidence factor is in the range of 90-96
%.
The full load forecast data for each DISCO is given in Appendix-1.
The load data presented were obtained from the “Load Forecasting Group” of the “NTDC
Planning Department”.
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Table 1
Load forecast: Non-Diversified DISCO Totals
DISCO
Total Load (MW)
No.
Name
2015
2016
2018
2020
CF*
1
PESCO
3516
3658
3943
4203
88%
2
IESCO
3407
3710
4405
5037
85%
3
GEPCO
2787
2944
3284
3657
90%
4
LESCO
5965
6290
7003
7755
84%
5
FESCO
3985
4233
4818
5583
83%
6
MEPCO
4233
4438
4868
5387
91%
7
HESCO
3083
3282
3722
4261
85%
8
QESCO
1767
1857
2054
2284
98%
10
TESCO
1097
1169
1322
1450
88%
Total
29839
31580
35419
39617
*CF: Coincidence Factor
Table 2
Load forecast: diversified DISCO totals
DISCO
Total Load (MW)
No.
Name
1
PESCO
3091
3211
3452
3674
2
IESCO
2891
3148
3738
4273
3
GEPCO
2500
2641
2945
3279
4
LESCO
5027
5302
5905
6538
5
FESCO
3289
3493
3974
4604
6
MEPCO
3860
4045
4432
4902
7
HESCO
2607
2773
3143
3596
8
QESCO
1738
1827
2020
2246
10
TESCO
968
1031
1166
1278
25970
27471
30773
34391
Total
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2016
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2018
2020
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5
SECONDARY TRANSMISSION PLANNING CRITERIA
The planning of the Secondary Transmission System considers the operation of a power
system under two possible situations, that is:
Normal operating conditions (N-0): the Secondary Transmission System (66-132 kV)
infrastructure is entirely available (no equipment has been considered out of service).
Contingency operating conditions (N-1): one of the Secondary Transmission System
equipment (line or transformer) is out of service. In this study, only outage of
transmission lines rated at 132 kV (or 66 kV) within each DISCO was considered.
For each of these operating conditions, the following criteria were applied to the analyses;
System Voltage Criteria
The acceptable voltage range for operating the system based on factors such as
equipment limitations under normal and contingency conditions is as follows:
Condition
Acceptable Voltage Range
Normal System Conditions
95% - 105% (±5%)
Contingency Conditions
90% - 110% (±10%)
It is important to note that from an operational standpoint, healthy systems usually target
a voltage close to 1.0 pu at 132 kV (or 66 kV) voltage levels.
Equipment Thermal Loading Criteria
The Secondary Transmission System shall be planned to allow all transmission lines
and equipment to operate within the following limits for the following defined conditions:
Condition
Thermal Loading Limit
Normal System Conditions
Defined Normal Load Capacity
System Design Contingencies of Long Duration
(i.e. an outage involving the failure of a
transformer)
Defined Normal Load Capacity
System Design Contingencies of Short
Duration (i.e. not involving a transformer)
Defined Emergency Load Capacity (120% of
normal rating for 10 hours per year)
However; as per discussion with the NTDC Planning Engineers, the line loading under
contingency conditions (N-1 analysis) will be based on the normal rating (Rating A).
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6
METHODOLOGY
The methodology followed to accomplish the objectives of this project is summarized in
the following steps;
1. The load flow case representing the current system (either 2010 or 2011) has
been modified to include the 11 kV network. Each 132 kV or 66 kV bus was
expanded to model the 132/11 kV or 66/11 kV transformers. Loads have then
been placed at the 11 kV side along with the shunt capacitor banks, if any. The
actual measured values of bus voltages, power factors, active and reactive power
9energy), and loadings on lines and transformers were matched with the
simulated solutions to determine the actual power factors of loads at different
substations. These calibrated power factors were used for modelling of loads
(MW/MVAR) while developing the simulation cases of each spot year.
2. For building the Year-2015 case, each DISCO network in the starting base case
of Year-2014 was replaced by the detailed model developed at step-1.
3. Loads were updated based on the load forecast values for Year-2015, including
the addition of the new grid stations as appropriate and the established load
power factor. All the`` sub-projects planned under ADB Tr-I, Tr-2 and PSDP or
6th STG would be a part of the interconnected network in the Year-2015 base
case.
4. The generation schedule on the transmission level (220 kV and higher) would be
increased (if necessary) to match the load level.
By completing this step, each
DISCO would have an updated load flow case for Year-2015.
5. For each updated Year-2015 DISCO case, the 132 and 66 kV systems were
analysed under both normal (N-0) and contingency (N-1) conditions. As a result
of this analysis, system reinforcements were added as necessary. Then the new
Year-2015 case with reinforcements was re-analysed under (N-0) and (N-1)
conditions to make sure that the system satisfy the planning criteria.
6. The DISCO base cases for Year-2016 were built starting from the Year-2015
cases. Then steps 3-5 described above were followed. The process continues for
building the other two cases for years 2018 and 2020.
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7. Short circuit calculations were performed only for the last study year; by
combining all DISCO cases in one composite simulation case for year 2020.
Maximum short circuit currents were calculated using IEC 909 standards.
8. State of art software PSS/E of Siemens-PTI was used for all simulation analysis
of load flow and short circuit analysis.
7
LOAD FLOW STUDY RESULTS
The results for each DISCO are provided in Appendices 1-5 which shows the
reinforcements required for each of the years. The base case for each DISCO was
developed using the existing 2010 or 2011 system data, the starting NTDC base case
for 2014, the load forecast (2015-2020), and planned/ committed system expansions of
DISCOs up to 2015.
The load flow results are given for each DISCO independently in three main activities:
•
Analysing the developed case under both normal (N-0) and contingency (N-1)
conditions;
•
Identifying system reinforcements as appropriate; and
•
Re-checking the system under (N-0) and (N-1) with system reinforcements.
7.1
Year-2015 Study Base Cases
The load flow results are given for each DISCO independently in three main activities.
a) Analysing the developed case under both normal (N-0) and contingency (N-1)
conditions.
b) Identifying system reinforcements as appropriate.
c) Re-checking the system under (N-0) and (N-1) with system reinforcements.
7.1.1
“PESCO & TESCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total loads of PESCO and TESCO by Year-2015 are 3,091 MW and
968 MW, respectively (combined: 4,059 MW). The load flow load flow single line
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diagrams of the full PESCO and TESCO systems are shown in Appendix-2 (spread over
7 Sheets) along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], many low voltage problems were
recorded within the PESCO and TESCO systems as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
1080 SWABI
132.00
1 0.9095 120.06
1128 DIR
132.00
1 0.9129 120.50
1142 K.KHELA
132.00
1 0.9355 123.48
1144 MADYAN
132.00
1 0.9287 122.59
1146 SHANGLAP
132.00
1 0.9292 122.66
1250 LANDIKOT
132.00
10 0.9118 120.35
1255 KHYBER AGENC132.00
10 0.9234 121.89
1260 PESHCANT
132.00
1 0.9251 122.11
1302 GURGURI
132.00
1 0.7751 102.32
1303 HANGU
66.000
1 0.6905 45.573
1309 GHILJO
66.000
10 0.6417 42.352
1312 HANGU
132.00
1 0.9401 124.09
1315 TALL
132.00
1 0.6047 79.822
1316 TALL
66.000
1 0.6241 41.187
1317 KORAIZ
132.00
10 0.9404 124.14
1336 SABIR ABAD
132.00
1 0.9436 124.56
1338 SIRAJ BABA
132.00
1 0.9484 125.19
1340 BANNU
132.00
1 0.9423 124.39
1342 BANNU-II
132.00
1 0.8926 117.82
1344 T-MIRALI
132.00
1 0.7756 102.38
1345 S.NURANG
132.00
1 0.9435 124.54
1346 MIR ALI
132.00
10 0.7530 99.396
1350 MIRANSHA
132.00
10 0.7059 93.183
1351 DATAKHEL
132.00
10 0.6796 89.704
1352 GHALANAI
132.00
10 0.9350 123.41
1355 RAZMAK
132.00
10 0.6835 90.224
1360 ABBOTABD
132.00
1 0.9461 124.89
1370 AYUB M.C
132.00
1 0.9468 124.98
1375 NATIAGLI
132.00
1 0.9348 123.39
1380 MANSEHRA
132.00
1 0.9470 125.00
1385 OGHI
132.00
1 0.9021 119.07
1390 BATAL
132.00
1 0.8669 114.43
1394 THAKOT
132.00
1 0.8527 112.56
1400 BALAKOT
132.00
1 0.8883 117.26
1418 T-HATTAR
132.00
1 0.9375 123.75
1420 HATTAR
132.00
1 0.9170 121.04
1421 BEST-W-C
132.00
1 0.9135 120.58
1422 SADI-C-F
132.00
1 0.9144 120.70
1440 TARBELA-R
132.00
1 0.9152 120.81
1442 GHAZI-IS
132.00
1 0.9337 123.25
1445 G.AMAZAI
132.00
1 0.9089 119.98
1450 TARBELA-N
132.00
1 0.9285 122.56
1455 NAUSERY
132.00
1 0.8362 110.37
1460 TANK
132.00
1 0.8160 107.71
1461 GOMAL-ZM
132.00
1 0.8036 106.07
1465 WANA
132.00
10 0.7690 101.51
1520 SHABQDAR
66.000
1 0.8812 58.160
1530 GHALANI
66.000
10 0.7525 49.664
1531 LAKARAI
66.000
10 0.5089 33.589
1601 T-SSPS
66.000
1 0.8775 57.912
1602 WARSAK-D
66.000
1 0.8612 56.838
1605 SSPS
66.000
10 0.8762 57.831
1670 TIMRGARH
66.000
1 0.8093 53.416
1675 WARAI
66.000
1 0.6961 45.940
1686 KHAR BAJAWAR132.00
10 0.9365 123.62
1690 DIR
66.000
1 0.6499 42.891
1700 KOHAT
66.000
1 0.9043 59.682
1710 KOHAT-O
66.000
1 0.9043 59.684
1720 KALAYA
66.000
10 0.5353 35.328
1730 T-KALAYA
66.000
1 0.7569 49.953
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1750 ALIZAI
66.000
10 0.4852 32.023
1755 SADDA
132.00
10 0.4673 61.678
1760 SADDA
66.000
10 0.4140 27.327
1770 PARANCHINAR 66.000
10 0.3407 22.485
1775 PARACINA
132.00
10 0.3984 52.595
1780 BANNU
66.000
1790 KRM.GRHI
66.000
1 0.8953 59.088
1830 PEZU
132.00
1 0.9373 123.73
1840 TANK-1
66.000
1 0.8108 53.513
1850 JANDOLA
66.000
10 0.7612 50.236
1865 SARAROGA
66.000
1 0.7613 50.246
1870 KULACHI
66.000
1 0.6429 42.428
1872 T-KULCHI
66.000
1 0.6643 43.845
1880 DARABAN
66.000
1 0.6034 39.823
1890 BUNDKURI
66.000
1 0.6257 41.295
1900 ABBOTABD
66.000
1 0.6853 45.228
1920 T-HAVLAN
66.000
1 0.7415 48.936
1930 HARIPUR
66.000
1 0.8308 54.832
2015 MUZAFBAD
132.00
1 0.8278 109.27
2018 JAGRAN
132.00
1 0.8500 112.20
5015 TAJAZAI
132.00
1 0.9397 124.04
7985 D.I.KHAN
66.000
1 0.7872 51.954
1 0.9328 61.562
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
PESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
130 BANNU
220.00*
15
1080 SWABI
132.00*
1
1080 SWABI
132.00*
1080 SWABI
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
132.00
1
1
533.8
480.0
111.2
10801 T1
11.000
1
1
29.7
26.0
114.3
1
10802 T2
11.000
1
1
29.2
26.0
112.4
132.00*
1
10803 T3
11.000
1
1
28.6
26.0
110.0
1090 CHARSADA
132.00*
1
10903 T3
11.000
1
1
26.2
26.0
100.9
1095 RAJJAR
132.00*
1
10951 T1
11.000
1
1
13.4
13.0
102.9
1115 SHABQDAR
132.00*
1
66.000
1
2
46.4
40.0
115.9
1118 JALALA
132.00*
1
11183 T5
11.000
1
1
26.9
26.0
103.5
1128 DIR
132.00*
1
11281 T1
11.000
1
1
22.3
13.0
171.2
1130 CHAKDARA
132.00*
1
66.000
1
1
38.4
37.5
102.5
1146 SHANGLAP
132.00*
1
11461 T1
11.000
1
1
10.5
7.6
137.6
1196 PESHFORT
132.00*
1
11961 T1
11.000
1
1
43.3
40.0
108.3
1196 PESHFORT
132.00*
1
11962 T2
11.000
1
1
42.5
40.0
106.2
1240 JAMRUD-I
132.00
1
132.00*
1
1
135.3
112.0
120.8
1257 R-BABA
132.00*
1
12572 T2
11.000
1
1
13.6
13.0
104.7
1257 R-BABA
132.00*
1
12573 T3
11.000
1
1
27.5
26.0
105.7
1260 PESHCANT
132.00*
1
12603 T3
11.000
1
1
26.2
26.0
100.9
1260 PESHCANT
132.00*
1
12604 T4
11.000
1
1
26.4
26.0
101.6
1270 PESH UNI
132.00*
1
12703 T3
11.000
1
1
26.4
26.0
101.4
1280 PESH.IND
132.00*
1
12801 T1
11.000
1
1
43.6
40.0
109.0
1290 SHMUHDI-2
132.00*
1
1293 BADABER
132.00
1
2
16.3
12.0
135.8
1300 KOHAT
132.00
1
1302 GURGURI
132.00*
1
1
118.1
112.0
105.4
1300 KOHAT
132.00*
1
1700 KOHAT
66.000
1
1
61.6
40.0
154.0
1302 GURGURI
132.00
1
1315 TALL
132.00*
1
1
229.9
112.0
205.3
1302 GURGURI
132.00*
1
1332 BANNU-N
132.00
1
1
115.0
112.0
102.7
1315 TALL
132.00
1
1755 SADDA
132.00*
10
1
145.2
112.0
129.6
504760-01-A4
1332 BANNU-N
1520 SHABQDAR
1650 CHAKDARA
1270 PESH UNI
9
Disco Transmission Expansion Plan
National Power System Expansion Plan
1315 TALL
132.00*
1
13151 T2
11.000
1
1
29.8
26.0
114.8
1315 TALL
132.00*
1
13152 T3
11.000
1
1
14.4
13.0
110.9
1320 LACHI
132.00*
1
13201 T1
11.000
1
1
16.0
13.0
122.9
1320 LACHI
132.00*
1
13202 T2
11.000
1
1
17.5
13.0
134.7
1332 BANNU-N
132.00
1
1340 BANNU
132.00*
1
1
112.8
112.0
100.7
1332 BANNU-N
132.00
1
1340 BANNU
132.00*
1
2
112.8
112.0
100.7
1336 SABIR ABAD
132.00*
1
11.000
1
1
13.0
13.0
100.3
1340 BANNU
132.00
1
1342 BANNU-II
132.00*
1
1
183.1
112.0
163.5
1342 BANNU-II
132.00
1
1344 T-MIRALI
132.00*
1
1
192.6
112.0
172.0
1345 S.NURANG
132.00*
1
13451 T1
11.000
1
1
13.4
13.0
102.9
1345 S.NURANG
132.00*
1
13452 T2
11.000
1
1
31.5
26.0
121.2
1360 ABBOTABD
132.00*
1
13601 T1
11.000
1
1
28.6
26.0
110.2
1360 ABBOTABD
132.00*
1
13602 T2
11.000
1
1
13.8
13.0
105.9
1360 ABBOTABD
132.00*
1
13603 T3
11.000
1
1
30.3
26.0
116.6
1370 AYUB M.C
132.00*
1
13701 T1
11.000
1
1
28.8
26.0
110.8
1375 NATIAGLI
132.00*
1
13751 T1
11.000
1
1
23.0
13.0
176.8
1380 MANSEHRA
132.00*
1
13803 T3
11.000
1
1
28.5
26.0
109.7
1400 BALAKOT
132.00*
1
14001 T1
11.000
1
1
15.7
13.0
120.7
1410 HARIPUR
132.00*
1
14103 T3
11.000
1
1
27.7
26.0
106.5
1418 T-HATTAR
132.00
1
1420 HATTAR
132.00*
1
1
206.9
112.0
184.7
1418 T-HATTAR
132.00*
1
2060 WAH NEW
132.00
2
1
206.8
112.0
184.6
1420 HATTAR
132.00*
1
14201 T1
11.000
1
1
31.4
26.0
120.6
1420 HATTAR
132.00*
1
14202 T2
11.000
1
1
47.4
40.0
118.4
1420 HATTAR
132.00*
1
14203 T3
11.000
1
1
29.9
26.0
114.9
1420 HATTAR
132.00*
1
14204 T4
11.000
1
1
29.9
26.0
115.0
1445 G.AMAZAI
132.00*
1
14451 T1
11.000
1
1
27.3
26.0
105.0
1445 G.AMAZAI
132.00*
1
14453 T3
11.000
1
1
13.7
13.0
105.7
1445 G.AMAZAI
132.00*
1
14454 T4
11.000
1
1
27.4
26.0
105.4
1460 TANK
132.00*
1
14601 T4
11.000
1
1
17.4
13.0
134.2
1460 TANK
132.00*
1
14602 T6
11.000
1
1
39.6
26.0
152.5
1520 SHABQDAR
66.000
1
66.000*
10
1
48.2
39.0
123.7
1675 WARAI
66.000*
1
11.000
1
1
13.9
13.0
106.7
1690 DIR
66.000*
1
1691 DIR
33.000
1
1
8.4
6.3
134.1
1700 KOHAT
66.000
1
1730 T-KALAYA
66.000*
1
1
59.4
39.0
152.2
1890 BUNDKURI
66.000*
1
7985 D.I.KHAN
66.000
1
1
44.1
39.0
113.2
1890 BUNDKURI
66.000*
1
18901 T1
11.000
1
1
10.1
7.5
134.6
1890 BUNDKURI
66.000*
1
18902 T2
11.000
1
1
17.5
13.0
134.9
1900 ABBOTABD
66.000*
1
19001 T1
11.000
1
1
17.7
13.0
136.0
2015 MUZAFBAD
132.00
1
33.000*
1
1
10.3
10.0
102.6
2015 MUZAFBAD
132.00*
1
20151 T1
11.000
1
1
13.8
10.0
137.9
2015 MUZAFBAD
132.00*
1
20152 T2
11.000
1
1
38.9
26.0
149.5
2015 MUZAFBAD
132.00*
1
20153 T4
11.000
1
1
39.5
26.0
152.0
7430 D.I.KHAN
132.00*
1
66.000
1
1
73.7
40.0
184.3
13361 T1
1530 GHALANI
16751 T1
2016 MUZFRABD
7985 D.I.KHAN
TESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
1250 LANDIKOT
132.00*
10
12501 T1
11.000
10
1
35.8
26.0
137.6
1250 LANDIKOT
132.00*
10
12502 T2
11.000
10
1
35.8
26.0
137.6
1255 KHYBER AGENC132.00*
10
12551 T1
11.000
10
1
28.5
26.0
109.5
1255 KHYBER AGENC132.00*
10
12552 T2
11.000
10
1
14.3
13.0
109.9
1275 BARA
132.00*
10
12751 T1
11.000
10
1
26.1
26.0
100.3
1275 BARA
132.00*
10
12753 T3
11.000
10
1
26.1
26.0
100.3
1315 TALL
132.00
1
132.00*
10
1
145.2
112.0
129.6
504760-01-A4
1755 SADDA
10
Disco Transmission Expansion Plan
National Power System Expansion Plan
1346 MIR ALI
132.00*
10
13461 T1
11.000
10
1
21.2
13.0
162.9
1346 MIR ALI
132.00*
10
13462 T2
11.000
10
1
8.5
6.3
135.2
1346 MIR ALI
132.00*
10
13463 T3
11.000
10
1
42.7
26.0
164.2
1350 MIRANSHA
132.00*
10
13504 T3
11.000
10
1
23.7
13.0
182.4
1520 SHABQDAR
66.000
1
1530 GHALANI
66.000*
10
1
48.2
39.0
123.7
1530 GHALANI
66.000
10
1531 LAKARAI
66.000*
10
1
48.5
39.0
124.2
1720 KALAYA
66.000*
10
11.000
10
1
6.3
6.3
100.1
17202 T2
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to resolve the (N-0) violations, as follows.
PESCO Reinforcements
Augmentations/Shifting:
1. 10/13 MVA by 20/26 MVA at 132 kV GSS Rajjar.
2. 7.6 MVA by 10/13 MVA at 132 kV GSS Shangla
3. 10/13 by 20/26 MVA at 132 kV GSS Tall.
4. 10/13 MVA by 20/26 MVA at 132 kV GS Lachi.
5. 10/13 by 20/26 MVA 132 kV GS Sare Naurang.
6. 10/13 by 20/26 MVA at 132 kV GS Tank.
7. 10/13 by 20/26 MVA at 132 kV Nathhi Gali.
8. 10/13 by 20/26MVA at 132 kV Abbotabad.
9. 10/13 by 20/26 MVA at 132 kV Gadoon.
10. 7.5 by 10/13 MVA at 66 kV Bandkuri.
11. 10/13 by 20/26 MVA at 132 kV DIR.
12. 33/11 kV Transformer of 4 MVA capacity at Jutilasht.
13. Shifting of 40 MVA 132/66 kV T/F from 132 kV Chakdara to 132 kV Timergara.
Extension:
1. 132 kV GS AMC 10/13 MVA.
504760-01-A4
11
Disco Transmission Expansion Plan
National Power System Expansion Plan
132 kV Capacitors:
1. 7.2 MVAR at 132 kV Tall
11 kV Capacitors:
1. 7.2 MVAR at T-3, 132 kV Charsadda.
2. 7.2 MVAR at T-5, 132 kV Jalala.
3. 6.2 MVAR at T-1, 132 kV K.Kela.
4. 4.8 MVAR at T-1,132 kV Shangla.
5. 3.6 MVAR at T-1 and additional 1.2 MVAR at T-2, 66 kV Timergera.
6. 7.2 MVAR EACH at T-1 and T-2, 132 kV Tall.
7. 7.2 MVAR at T-1 and additional 2.4 MVAR at T-2, 132 kV Tank.
8. 7.2 MVAR each at T-1 and T-4, 132 kV Peshawar Cantt.
9. 7.2 MVAR at T-1, 132 kV Peshawar Industries.
10. 4.8 MVAR at T-2 and 7.2 MVAR at T-3, 132 kV Rehman Baba.
11. 10 MVAR and additional 4.8 MVAR, 132 kV Muzaffarabad.
12. 7.2 MVAR at T-3, 132 kV Mansehra.
13. 4.8 MVAR at T-1, 132 kV Balakot.
14. ADD 2.4 MVAR at T-1 and T-2 EACH, 66 kV Warsak.
15. 4.8 MVAR and 3 MVAR, 132 kV Bandkore.
16. 4.8 MVAR, 132 kV Daraban.
17. Add 2.4 MVAR at 132 kV Hussai, T-1
18. 10 MVAR at 132 kV Swabi, T-1 (40 MVA)
504760-01-A4
12
Disco Transmission Expansion Plan
National Power System Expansion Plan
Proposed Substation:
1. 132 kV substation Hattar-II with 2 Nos. of 20/26 MVA Transformers and 18KM
line with Lynx conductor.
New Lines:
1. SDT line from 132 kV Hattar-132 kV Hattar-II with Lynx.
2. SDT line from 132 kV Bannu-132 kV Bannu-II with Lynx.
3. SDT line 132 kV Hangu-132 kV Tall with Lynx.
4. SDT line from 132 kV Mardan-II to 132 kV Hussai with Lynx 12 km.
TESCO Reinforcements
Augmentations:
1. 10/13 by 20/26 MVA at 132 kV GS Sadda.
2. 6.3 by 20/26 MVA at 132 kV Mir Ali.
3. 10/13 by 20/26 MVA of T-1 and T-3 each at 132 kV Miran Shah.
4. 6.3 by 10/13 MVA at 132 kV Kalaya.
5. 10/13 by 20/26 MVA at 132 kV GS KHYBER AGENCY.
Conversion of 66kV into 132kV Grids:
1. 132 kV Kalaya with 2 Nos. 10/13 MVA transformers.
2. 132 kV Lakarai with 2 Nos. 20/26 MVA transformers.
New Lines:
1. Single circuit with SDT towers from Bannu-II- Miran Shah with Lynx conductor of
74 km.
132 kV Capacitors:
1. 48 MVAR at 132 kV SADDA.
504760-01-A4
13
Disco Transmission Expansion Plan
National Power System Expansion Plan
11kV Capacitors:
1. 7.2 MVAR at T-1 and T-2, 132 kV Sadda.
2. 2 MVAR at T-1 and T-2 each and add 1.2MVAR at T-3, 132 kV Parachinar 7.
3. 4.8 MVAR at T-2 and 7.2MVAR at T-3 and add 1.2 MVAR at T-1, 132kV Miran
Shah.
4. 4.8 MVAR at T-1, 132 kV Razmak.
5. 7.2 MVAR at T-1 and T-2 at 132 kV Wana
6. 4.8 MVAR at T-1 and T-2 EACH, 132 kV Kalaya.
7. 7.2 MVAR at T-1 and T-2 EACH, 132 kV Khyber Agency.
8. 7.2 MVAR at T-1 and T-2 EACH, 132 kV Ghallani.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
Three severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 122
: OPEN LINE FROM BUS 1302 [GURGURI
132.00] TO BUS 1315 [TALL
132.00] CKT 1
SINGLE 167
: OPEN LINE FROM BUS 1380 [MANSEHRA
132.00] TO BUS 1400 [BALAKOT
132.00] CKT 1
SINGLE 170
: OPEN LINE FROM BUS 1400 [BALAKOT
132.00] TO BUS 2015 [MUZAFBAD
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
Many voltage problems were recorded (outside: 0.90 – 1.10 pu).
-------------------------------------------------------------------------------MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 40
<-------- B U S -------->
1128 DIR
132.00
0.89442
0.95337
1.10000
0.90000
SINGLE 40
1686 KHAR BAJAWAR132.00
0.89769
0.95443
1.10000
0.90000
SINGLE 41
1128 DIR
0.89431
0.95337
1.10000
0.90000
504760-01-A4
132.00
14
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 41
1686 KHAR BAJAWAR132.00
0.89758
0.95443
1.10000
0.90000
SINGLE 45
1140 SWAT
132.00
0.88139
0.97589
1.10000
0.90000
SINGLE 45
1142 K.KHELA
132.00
0.86267
0.96113
1.10000
0.90000
SINGLE 45
1144 MADYAN
132.00
0.85524
0.95464
1.10000
0.90000
SINGLE 45
1146 SHANGLAP
132.00
0.85904
0.95871
1.10000
0.90000
SINGLE 98
1460 TANK
132.00
0.86468
0.97107
1.10000
0.90000
SINGLE 98
1461 GOMAL-ZM
132.00
0.86207
0.97203
1.10000
0.90000
SINGLE 98
1465 WANA
132.00
0.83873
0.95417
1.10000
0.90000
SINGLE 98
1840 TANK-1
66.000
0.88557
0.99934
1.10000
0.90000
SINGLE 98
1850 JANDOLA
66.000
0.84417
0.96779
1.10000
0.90000
SINGLE 98
1865 SARAROGA
66.000
0.84433
0.96797
1.10000
0.90000
SINGLE 98
1870 KULACHI
66.000
0.85977
0.96654
1.10000
0.90000
SINGLE 98
1872 T-KULCHI
66.000
0.87547
0.97982
1.10000
0.90000
SINGLE 98
1880 DARABAN
66.000
0.83811
0.95221
1.10000
0.90000
SINGLE 98
1890 BUNDKURI
66.000
0.85620
0.96618
1.10000
0.90000
SINGLE 99
1460 TANK
132.00
0.86468
0.97107
1.10000
0.90000
SINGLE 99
1461 GOMAL-ZM
132.00
0.86207
0.97203
1.10000
0.90000
SINGLE 99
1465 WANA
132.00
0.83873
0.95417
1.10000
0.90000
SINGLE 99
1840 TANK-1
66.000
0.88557
0.99934
1.10000
0.90000
SINGLE 99
1850 JANDOLA
66.000
0.84417
0.96779
1.10000
0.90000
SINGLE 99
1865 SARAROGA
66.000
0.84433
0.96797
1.10000
0.90000
SINGLE 99
1870 KULACHI
66.000
0.85977
0.96654
1.10000
0.90000
SINGLE 99
1872 T-KULCHI
66.000
0.87547
0.97982
1.10000
0.90000
SINGLE 99
1880 DARABAN
66.000
0.83811
0.95221
1.10000
0.90000
SINGLE 99
1890 BUNDKURI
66.000
0.85620
0.96618
1.10000
0.90000
SINGLE 115
1775 PARACINA
132.00
0.89420
0.95018
1.10000
0.90000
SINGLE 123
1775 PARACINA
132.00
0.88455
0.95018
1.10000
0.90000
SINGLE 133
1303 HANGU
66.000
0.89211
0.99830
1.10000
0.90000
SINGLE 133
1309 GHILJO
66.000
0.85556
0.98445
1.10000
0.90000
SINGLE 133
1316 TALL
66.000
0.84227
0.98985
1.10000
0.90000
SINGLE 133
1750 ALIZAI
66.000
0.79782
0.95504
1.10000
0.90000
SINGLE 137
1336 SABIR ABAD
132.00
0.89997
1.01389
1.10000
0.90000
SINGLE 147
1344 T-MIRALI
132.00
0.56227
0.99852
1.10000
0.90000
SINGLE 147
1346 MIR ALI
132.00
0.54280
0.99098
1.10000
0.90000
SINGLE 147
1350 MIRANSHA
132.00
0.62317
0.98560
1.10000
0.90000
SINGLE 147
1351 DATAKHEL
132.00
0.59341
0.96883
1.10000
0.90000
SINGLE 147
1355 RAZMAK
132.00
0.60191
0.97954
1.10000
0.90000
SINGLE 147
1775 PARACINA
132.00
0.88002
0.95018
1.10000
0.90000
SINGLE 147
1790 KRM.GRHI
66.000
0.88900
1.01018
1.10000
0.90000
SINGLE 148
1350 MIRANSHA
132.00
0.89025
0.98560
1.10000
0.90000
SINGLE 148
1351 DATAKHEL
132.00
0.87111
0.96883
1.10000
0.90000
SINGLE 148
1355 RAZMAK
132.00
0.88116
0.97954
1.10000
0.90000
SINGLE 187
1465 WANA
132.00
0.89883
0.95417
1.10000
0.90000
SINGLE 190
1465 WANA
132.00
0.86403
0.95417
1.10000
0.90000
SINGLE 217
1870 KULACHI
66.000
0.89869
0.96654
1.10000
0.90000
SINGLE 217
1880 DARABAN
66.000
0.87999
0.95221
1.10000
0.90000
SINGLE 217
1890 BUNDKURI
66.000
0.89646
0.96618
1.10000
0.90000
SINGLE 218
1870 KULACHI
66.000
0.88360
0.96654
1.10000
0.90000
SINGLE 218
1872 T-KULCHI
66.000
0.89869
0.97982
1.10000
0.90000
SINGLE 218
1880 DARABAN
66.000
0.86380
0.95221
1.10000
0.90000
SINGLE 218
1890 BUNDKURI
66.000
0.88089
0.96618
1.10000
0.90000
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
504760-01-A4
15
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Many line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
1070 MARDAN
132.00
1074*MARDANII
132.00 1
SINGLE 1
112.0
163.5
145.2
%
1072*HUSSAI
132.00
1074 MARDANII
132.00 1
SINGLE 1
112.0
112.7
102.9
1070 MARDAN
132.00
1074*MARDANII
132.00 1
SINGLE 2
112.0
124.5
110.3
1069*DOBIAN
132.00
1070 MARDAN
132.00 1
SINGLE 4
112.0
148.1
134.3
1069*DOBIAN
132.00
1070 MARDAN
132.00 1
SINGLE 12
112.0
126.1
113.9
1115*SHABQDAR
132.00
1189 SHAIBG-N
132.00 2
SINGLE 28
112.0
132.8
120.8
1115*SHABQDAR
132.00
1189 SHAIBG-N
132.00 1
SINGLE 29
112.0
132.8
120.8
1125*TIMERGARA
132.00
1130 CHAKDARA
132.00 3
SINGLE 40
112.0
128.2
124.5
1125*TIMERGARA
132.00
1130 CHAKDARA
132.00 2
SINGLE 41
112.0
128.2
124.6
1130 CHAKDARA
132.00
1135*BARIKOT
132.00 1
SINGLE 45
112.0
140.7
137.4
1135 BARIKOT
132.00
1140*SWAT
132.00 1
SINGLE 45
112.0
124.6
126.2
1189 SHAIBG-N
132.00
1191*SHAHI SP
132.00 2
SINGLE 71
112.0
117.1
102.1
1189 SHAIBG-N
132.00
1191*SHAHI SP
132.00 1
SINGLE 72
112.0
117.1
102.1
1240 JAMRUD-I
132.00
1270*PESH UNI
132.00 2
SINGLE 92
112.0
128.5
113.1
1240 JAMRUD-I
132.00
1270*PESH UNI
132.00 1
SINGLE 93
112.0
128.5
113.1
1291 SHMUHDI-1
132.00
1294*MATANI
132.00 3
SINGLE 97
112.0
114.7
100.2
1261 DI.KHN-N
132.00
7430*D.I.KHAN
132.00 2
SINGLE 98
112.0
180.4
171.1
1261 DI.KHN-N
132.00
7430*D.I.KHAN
132.00 1
SINGLE 99
112.0
180.4
171.1
1302*GURGURI
132.00
1315 TALL
132.00 1
SINGLE 131
112.0
125.0
112.2
1332*BANNU-N
132.00
1340 BANNU
132.00 2
SINGLE 138
112.0
203.0
174.6
1332*BANNU-N
132.00
1340 BANNU
132.00 1
SINGLE 139
112.0
203.0
174.6
1340*BANNU
132.00
1342 BANNU-II
132.00 2
SINGLE 144
112.0
141.6
122.6
1340*BANNU
132.00
1342 BANNU-II
132.00 1
SINGLE 145
112.0
141.6
122.5
1332 BANNU-N
132.00
1340*BANNU
132.00 1
SINGLE 147
112.0
116.4
111.0
1332 BANNU-N
132.00
1340*BANNU
132.00 2
SINGLE 147
112.0
116.4
111.0
1342 BANNU-II
132.00
1350*MIRANSHA
132.00 1
SINGLE 147
112.0
135.5
194.2
1342 BANNU-II
132.00
1344*T-MIRALI
132.00 1
SINGLE 148
112.0
132.1
125.7
1440*TARBELA-R
132.00
1442 GHAZI-IS
132.00 1
SINGLE 181
112.0
115.4
105.7
7430*D.I.KHAN
132.00
7985 D.I.KHAN
66.000 2
SINGLE 217
40.0
52.9
132.2
7430*D.I.KHAN
132.00
7985 D.I.KHAN
66.000 1
SINGLE 218
40.0
54.2
135.5
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
To overcome these (N-1) violations, more system additions were considered as follows.
PESCO Reinforcements
Extensions:
1. Additional 132/66 kV 40 MVA T/F at 132 kV D.I.Khan.
504760-01-A4
16
Disco Transmission Expansion Plan
National Power System Expansion Plan
11 kV Capacitors:
1. 7.2 MVAR each at T-2 & T-3 and 4.8 MVAR at T-4, 132 kV Mattani.
2.
4.8 MVAR at T-1, 132 kV Shangla.
3. Additional 2.4 MVAR at T-3, 132 kV Tall
4. 4.8 MVAR at T-1, 132 kV Sabirabad.
T/ Lines:
1. Additional
circuit
Mansehra-Balakot-Muzaffarabad
with
Lynx
length
(22.8+28=50.8 km)
2. Additional circuit from Gurguri-Tall with Lynx length 30 km.
3. Reconductoring of 220/132 kV Mardan to Mardan-II with Rail conductor length 6
km.
4. New line from Chota Lahor to Dobain with Lynx length 13 km.
5. New line from 220/132 kV Chakdara to Timergara with Lynx length 32 km.
6. New line 220/132 kV Chakdara-Barikot-Swat with Lynx length 30+12= 42 km.
7. Reconductoring of D/C 220/132 kV Shahibagh - 132 kV Shabqadar with Greely
length 20.4 km.
8. Reconductoring of D/C 220/132 kV Shahibagh - Shahibagh with Greely length
5.8 km.
9. Reconductoring Jamrud-Peshawar University with Greely length 4 km.
10. New line 220/132 kV D.I.Khan – 132 kV D.I.Khan with Lynx length 25 km.
11. New line 220/132 kV D.I.Khan – Tank with Lynx length 60 km.
12. New line 220/132 kV Bannu-Bannu with Lynx length 16 km.
13. New line Bannu – Bannu-II with Lynx length 12 km.
14. New 2nd line Hattar – Hattar-II with Lynx length 4 km
504760-01-A4
17
Disco Transmission Expansion Plan
National Power System Expansion Plan
15. Reconductoring Sheukh Muhammadi – Mattani with Greely length 6.2 km.
TESCO Reinforcements
11 kV Capacitors:
1. 4.8 MVAR at T-1, 66 kV Alizai.
2. 2.4 MVAR at T-1, 66 kV Ghiljo.
3. Additional 2.4 MVAR at T-1, 132 kV Miranshah.
T/ Lines:
1. New line Bannu-II – Miranshah with Lynx length 55 km.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow load flow single line diagrams for developed PESCO and TESCO
base case for Year-2015 with the above mentioned system reinforcements are given in
Appendix-3 (spread over 7 Sheets).
7.1.2
“IESCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of IESCO by Year-2015 is 2,891 MW. The load flow single
line diagrams of the full IESCO system are shown in Appendix-2 (spread over 9 Sheets)
along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], marginal voltage problems were
recorded within the IESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
2788 DANDOT CF
132.00
V(PU)
V(KV)
2 1.0683 141.02
BUS# X-- NAME --X BASKV AREA
6491 MCLD.GNJ
132.00
V(PU)
V(KV)
2 1.0594 139.84
BUSES WITH VOLTAGE LESS THAN 0.9500:
504760-01-A4
18
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUS# X-- NAME --X BASKV AREA
2782 GARIBWAL
66.000
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
2 0.9468 62.48
Note: Both the Grid Stations are being fed from GEPCO
-------------------------------------------------------------------------------
Line/Transformer Overloads:
One marginal overloading problem was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
215 IBD.P.RD
220.00*
AREA
15
BUS# X-- NAME --X BASKV
2025 SANGJANI
132.00
AREA CKT LOADING
2
1
498.7
RATING PERCENT
480.0
103.9
Note: 220 KV Grid Station relate with NTDC
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system augmentations and
reinforcements were added as follows.
504760-01-A4
19
Disco Transmission Expansion Plan
National Power System Expansion Plan
22001
I‐10
Existing Capacity (MVA)
26
22002
I‐10
26
40
22003
I‐10
26
40
20252
Sangjani
13
26
20303
Faqirabad
13
26
20502
Sanjwal
13
26
21551
Bahria Town Ph‐IV
13
40
21351
Chakri
13
26
28531
Fauji CF
13
26
Consumer GS
28532
Fauji CF
13
26
Consumer GS
23503
Jhelum
26
40
23401
Dina
13
26
23402
Dina
13
26
25211
Tarar Khel
6.3
13
28101
Talagang
7.5
26
28102
Talagang
13
26
23301
Chakwal
26
40
23302
Chakwal
26
40
23321
Bestway CF
26
40
Consumer GS
23322
Bestway CF
26
40
Consumer GS
21001
Taxila
13
26
21002
Taxila
13
26
23001
Rewat New
13
26
23002
Rewat New
13
26
Bus #
Name of Grid Station
Proposed Capacity (MVA)
40
Remark
Consumer GS
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
504760-01-A4
20
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
A few low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 85
2166 CHAINTBATIAN132.00
0.87572
1.00649
1.10000
0.90000
SINGLE 85
2170 KHUTACTY
132.00
0.87572
1.00649
1.10000
0.90000
SINGLE 85
2180 AZADPATN
132.00
0.89335
0.99475
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
SINGLE 85
EVENTS
: OPEN LINE FROM BUS 2160 [KAHUTA
132.00] TO BUS 2170 [KHUTACTY
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
2200*IBD. I-10
132.00
2220 ZEROPOINT
132.00 1
SINGLE 94
114.0
134.5
117.2
%
2190 PIRWADHAI
132.00
2195*ISD. H-11
132.00 1
SINGLE 98
114.0
134.8
119.8
2330 CHAKWAL
132.00
2801*C.S.SHAH
132.00 2
SINGLE 153
112.0
125.3
118.8
2330 CHAKWAL
132.00
2801*C.S.SHAH
132.00 1
SINGLE 154
112.0
125.3
118.8
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 94
: OPEN LINE FROM BUS 2190 [PIRWADHAI
132.00] TO BUS 2195 [ISD. H-11
132.00] CKT 1
SINGLE 98
: OPEN LINE FROM BUS 2200 [IBD. I-10
132.00] TO BUS 2220 [ZEROPOINT
132.00] CKT 1
SINGLE 153
: OPEN LINE FROM BUS 2330 [CHAKWAL
132.00] TO BUS 2801 [C.S.SHAH
132.00] CKT 1
SINGLE 154
: OPEN LINE FROM BUS 2330 [CHAKWAL
132.00] TO BUS 2801 [C.S.SHAH
132.00] CKT 2
--------------------------------------------------------------------------------
504760-01-A4
21
Disco Transmission Expansion Plan
National Power System Expansion Plan
To overcome these (N-1) violations, more system additions were considered as follows.
1. Reconductoring 132 kv Transmission Lines
a) I-10 - Zero Point from Zigolo to Greely (6.8 KM)
b) Pirwadhai – H-11 from Zigolo to Greely (16.6KM)
c) Double Circuit C.S. Shah – Chakwal from Lynx to Greely (28.5 KM)
2. Installation of Capacitors
a) 4.8 MVAR Cap at T-1 Azadpattan
b) 4.8 MVAR Cap at T-2 Kahuta City
c) 4.8 MVAR Cap at T-1 Chaint Battian
d) 4.8 MVAR Cap at T-2 Chaint Battian
3. Installation of additional Capacitors
a) 2.4 to 4.8 MVAR Cap at T-1 Kahuta City
b) 2.4 to 4.8 MVAR Cap at T-1 Pinanwal
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed IESCO base case for Year2015 with the above mentioned system reinforcements are shown in Appendix-3 (spread
over 9 Sheets).
7.1.3
“GEPCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of GEPCO by Year-2015 is 2,500 MW. The load flow single
line diagrams of the full GEPCO system are shown in Appendix-2 (spread over 5
Sheets) along with the system additions from Year-2010 to Year-2015.
504760-01-A4
22
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the GEPCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two marginal overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
3015 MANGOWAL
132.00*
3
30152 T2
11.000
3
1
13.8
13.0
106.2
3180 PASRUR
132.00*
3
31803 T3
11.000
3
1
13.2
13.0
102.4
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), two system reinforcements were
added to solve the (N-0) violations as follows.
1. Augmentation of 13 MVA power transformer with 26 MVA at 132 KV Mangowal
Grid
2. Augmentation of 13 MVA power transformer with 26 MVA at 132 KV Pasrur
504760-01-A4
23
Disco Transmission Expansion Plan
National Power System Expansion Plan
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
One voltage problem was recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
SINGLE 100
3230 DASKA
66.000
V-CONT
V-INIT
V-MAX
V-MIN
0.87043
0.95210
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
SINGLE 100
EVENTS
: OPEN LINE FROM BUS 3220 [NANDIPUR
66.000] TO BUS 3230 [DASKA
66.000] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
3004 KHARIAN
132.00
3009*LALAMUSA
132.00 2
SINGLE 34
3004 KHARIAN
132.00
3009*LALAMUSA
132.00 1
3080*SLK.NEW
132.00
3105 SAHUWALA
132.00 1
RATING
FLOW
%
90.0
130.0
150.8
SINGLE 35
90.0
130.0
150.8
SINGLE 100
112.0
121.1
109.8
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 34
: OPEN LINE FROM BUS 3004 [KHARIAN
132.00] TO BUS 3009 [LALAMUSA
132.00] CKT 1
SINGLE 35
: OPEN LINE FROM BUS 3004 [KHARIAN
132.00] TO BUS 3009 [LALAMUSA
132.00] CKT 2
SINGLE 100
: OPEN LINE FROM BUS 3220 [NANDIPUR
66.000] TO BUS 3230 [DASKA
66.000] CKT 1
--------------------------------------------------------------------------------
504760-01-A4
24
Disco Transmission Expansion Plan
National Power System Expansion Plan
To overcome these (N-1) violations, more system additions were considered as follows.
1. Reconductoring of 132 kV Kharian – Lala Musa transmission line circuit No. 1
from Tiger to Greely
2. Reconductoring of 132 kV Kharian – Lala Musa transmission line circuit No. 2
from Tiger to Greely
3. Reconductoring of 132 kV Sahowala – Sailkot new transmission line circuit from
Lynx to Greely
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed GEPCO base case for Year2015 with the above mentioned system reinforcements are shown in Appendix-3 (spread
over 5 Sheets).
7.1.4
“LESCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of LESCO by Year-2015 is 5,027 MW. The load flow single
line diagrams of the full LESCO system are shown in Appendix-2 (spread over 9 Sheets)
along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], a few low voltage problems were
recorded within the LESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
504760-01-A4
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
25
Disco Transmission Expansion Plan
National Power System Expansion Plan
4600 BUCHEKI
66.000
4 0.8825 58.243
4610 ALI JAJ
66.000
4 0.7304 48.209
4620 MALIKPUR
66.000
4 0.8263 54.537
4650 MOHLAN
66.000
4 0.7515 49.602
40173 BHK T-3
11.000
4 0.9107 10.017
46101 AJ T-1
11.000
4 0.5965
6.562
46102 AJ T-2
11.000
4 0.7375
8.112
46201 MPR T-1
11.000
4 0.7966
8.763
46202 MPR T-2
11.000
4 0.7662
8.428
46501 MOHL T-1
11.000
4 0.6489
7.138
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
280 K.L.PAT
220.00*
15
4145 NKLP-2
132.00
4
1
335.0
160.0
209.4
4300 BUCHEKI
132.00*
4
4600 BUCHEKI
66.000
4
1
78.1
40.0
195.2
4610 ALI JAJ
66.000*
4
46101 AJ T-1
11.000
4
1
14.7
13.0
113.3
4610 ALI JAJ
66.000*
4
46102 AJ T-2
11.000
4
1
13.3
13.0
102.6
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added to solve the (N-0) violations as follows.
S.No
1
2
3
Sub‐Station
Mohlan
Ali Judge
Malikpur
Scope of Work
Conversion from 66 to 132 kV
Conversion from 66 to 132 kV
Conversion from 66 to 132 kV
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
504760-01-A4
26
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
4113 MCLEODRD
132.00
4114*SUNYVIEW
132.00 2
SINGLE 165
114.0
157.7
139.7
4113 MCLEODRD
132.00
4114*SUNYVIEW
132.00 1
SINGLE 166
114.0
157.7
139.7
4113*MCLEODRD
132.00
4137 QARTABA
132.00 2
SINGLE 167
114.0
147.5
130.5
4113*MCLEODRD
132.00
4137 QARTABA
132.00 1
SINGLE 168
114.0
147.5
130.5
4114 SUNYVIEW
132.00
4115*P.W.R
132.00 3
SINGLE 169
75.0
106.3
143.2
4114 SUNYVIEW
132.00
4115*P.W.R
132.00 2
SINGLE 170
75.0
106.3
143.2
4133*KOTLKPTO
132.00
4144 NKLP-1
132.00 1
SINGLE 189
202.0
233.5
117.6
4126*MODELTWN
132.00
4145 NKLP-2
132.00 1
SINGLE 190
202.0
214.5
106.2
4126*MODELTWN
132.00
4130 T-LEFO
132.00 1
SINGLE 191
202.0
211.6
104.8
4130*T-LEFO
132.00
4145 NKLP-2
132.00 1
SINGLE 191
202.0
264.4
128.7
4126*MODELTWN
132.00
4145 NKLP-2
132.00 1
SINGLE 194
202.0
247.8
123.1
4126 MODELTWN
132.00
4128*PUNJAB UNIV 132.00 1
SINGLE 197
202.0
233.5
117.0
4130*T-LEFO
132.00
4145 NKLP-2
SINGLE 197
202.0
205.2
100.5
132.00 1
%
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 165
: OPEN LINE FROM BUS 4113 [MCLEODRD
132.00] TO BUS 4114 [SUNYVIEW
132.00] CKT 1
SINGLE 166
: OPEN LINE FROM BUS 4113 [MCLEODRD
132.00] TO BUS 4114 [SUNYVIEW
132.00] CKT 2
SINGLE 167
: OPEN LINE FROM BUS 4113 [MCLEODRD
132.00] TO BUS 4137 [QARTABA
132.00] CKT 1
SINGLE 168
: OPEN LINE FROM BUS 4113 [MCLEODRD
132.00] TO BUS 4137 [QARTABA
132.00] CKT 2
SINGLE 169
: OPEN LINE FROM BUS 4114 [SUNYVIEW
132.00] TO BUS 4115 [P.W.R
132.00] CKT 2
SINGLE 170
: OPEN LINE FROM BUS 4114 [SUNYVIEW
132.00] TO BUS 4115 [P.W.R
132.00] CKT 3
SINGLE 189
: OPEN LINE FROM BUS 4126 [MODELTWN
132.00] TO BUS 4128 [PUNJAB UNIV 132.00] CKT 1
SINGLE 190
: OPEN LINE FROM BUS 4126 [MODELTWN
132.00] TO BUS 4130 [T-LEFO
132.00] CKT 1
SINGLE 191
: OPEN LINE FROM BUS 4126 [MODELTWN
132.00] TO BUS 4145 [NKLP-2
132.00] CKT 1
SINGLE 194
: OPEN LINE FROM BUS 4130 [T-LEFO
132.00] TO BUS 4145 [NKLP-2
132.00] CKT 1
SINGLE 197
: OPEN LINE FROM BUS 4133 [KOTLKPTO
132.00] TO BUS 4144 [NKLP-1
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
1. Replacement of D/C underground cable from 132kV Mcleod Road – Sunny View
with new D/C underground 1200mm2 XLPE Cable.
2. Replacement of D/C underground cable from 132kV Mcleod Road – Qartaba with
new D/C underground 1200mm2 XLPE Cable.
3. Replacement of D/C underground cable from 132kV Sunny View – PWR with
new D/C underground 1200mm2 XLPE Cable.
504760-01-A4
27
Disco Transmission Expansion Plan
National Power System Expansion Plan
4. Making Double In/Out at 132kV Old Kot Lakhpat Grid Station.
5. Making Double In/Out at 132kV LEFO Grid Station.
6. Making In/Out of 132kV Model Town – LEFO S/C at 132kV Town- Ship Grid
Station.
7. The 132kV Township-LEFO D/C line should normally be opened and can be
closed under emergency.
8. The 132kV Township-Wapda Town D/C line should normally closed.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed LESCO base case for Year2015 with the above mentioned system reinforcements are shown in Appendix-3 (spread
over 9 Sheets).
7.1.5
“FESCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of FESCO by Year-2015 is 3,289 MW. The load flow single
line diagrams of the full FESCO system are shown in Appendix-2 (spread over 6 Sheets)
along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], a few high voltage and many low
voltage problems were recorded within the FESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
5001 DAUDKHEL
132.00
5 1.0515 138.80
54803 T3
11.000
5 1.0947 12.042
BUS# X-- NAME --X BASKV AREA
5002 JINNAH
132.00
V(PU)
V(KV)
5 1.0511 138.75
BUSES WITH VOLTAGE LESS THAN 0.9500:
504760-01-A4
28
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
4500 KHEWA
132.00
5 0.9455 124.81
5190 RUKDOGRN
66.000
5 0.8413 55.523
5192 T-RAKDRN
66.000
5 0.8809 58.138
5200 BHAKKAR
66.000
5 0.9096 60.035
5210 BEHAL
66.000
5 0.8754 57.774
5220 MANKERA
66.000
5 0.9395 62.009
5230 HYD.THAL
66.000
5 0.9248 61.037
5240 ADHIKOT
66.000
5 0.8941 59.009
5680 SKASARNS
66.000
5 0.9068 59.851
7455 BHAKKAR
132.00
5 0.9436 124.56
7860 GARMHRJA
66.000
5 0.9009 59.462
7870 A.HAZARI
66.000
5 0.8441 55.713
42901 T1
11.000
5 0.9462 10.408
42902 T2
11.000
5 0.9462 10.408
44721 T1
11.000
5 0.9022
9.924
44722 T2
11.000
5 0.9328 10.261
44903 T3
11.000
5 0.9037
9.941
50402 T2
11.000
5 0.9452 10.397
51301 T1
11.000
5 0.9254 10.180
51302 T2
11.000
5 0.9324 10.257
51801 T1
11.000
5 0.9301 10.231
51901 T1
11.000
5 0.7751
51902 T2
11.000
5 0.8067
8.874
52001 T1
11.000
5 0.9186 10.104
52101 T1
11.000
5 0.8221
9.043
52201 T1
11.000
5 0.8653
9.518
52301 T1
11.000
5 0.8969
9.866
52401 T1
11.000
5 0.7740
8.514
54001 T1
11.000
5 0.9500 10.450
54031 T1
11.000
5 0.9439 10.383
54032 T1
11.000
5 0.9439 10.383
54251 T1
11.000
5 0.9379 10.317
54301 T1
11.000
5 0.9233 10.156
54402 T2
11.000
5 0.8417
54451 T
11.000
5 0.8800
9.680
56201 T1
11.000
5 0.9319 10.251
56801 T1
11.000
5 0.8510
9.361
56802 T2
11.000
5 0.8457
56902 T2
11.000
5 0.9068
9.974
57001 T1
11.000
5 0.9478 10.426
57002 T2
11.000
5 0.7906
8.696
57003 T3
11.000
5 0.9479 10.427
57701 T1
11.000
5 0.9486 10.435
57702 T2
11.000
5 0.9415 10.356
78502 T2
11.000
5 0.9065
9.971
78601 T1
11.000
5 0.8249
9.073
78701 T1
11.000
5 0.8355
9.191
78702 T2
11.000
5 0.7973
8.770
8.526
9.258
9.302
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
360 LUDEWALA
220.00*
15
5419 LUDWLA-N
132.00
5
1
642.4
480.0
133.8
420 NISATABD
220.00*
15
4330 NSHTBD-1
132.00
5
1
364.1
254.0
143.4
4380 FBD-TH-O
132.00*
5
43801 T1
11.000
5
1
46.0
40.0
115.1
4414 STIANA RD
132.00*
5
44141 T1
11.000
5
1
26.8
26.0
103.0
4440 JHANG.RD
132.00*
5
44402 T2
11.000
5
1
42.4
40.0
105.9
4440 JHANG.RD
132.00*
5
44403 T3
11.000
5
1
26.9
26.0
103.5
4472 SAMMDRI
132.00*
5
44721 T1
11.000
5
1
36.9
26.0
142.0
4482 PIRMEHL
132.00*
5
44822 T2
11.000
5
1
27.3
26.0
105.0
4490 JHANG
132.00*
5
44901 T1
11.000
5
1
41.5
40.0
103.8
4490 JHANG
132.00*
5
44903 T3
11.000
5
1
41.1
26.0
157.9
4550 KAMALIA
132.00*
5
45501 T1
11.000
5
1
41.2
40.0
102.9
5000 DAUDKHLO
132.00*
5
66.000
5
1
44.1
40.0
110.1
5020 MIANWALI
132.00*
5
11.000
5
1
43.4
40.0
108.6
504760-01-A4
5100 DAUDKHEL
50202 T2
29
Disco Transmission Expansion Plan
National Power System Expansion Plan
5040 PIPLAN
132.00*
5
50402 T2
11.000
5
1
14.7
13.0
113.2
5110 KALABAGH
66.000
5
51101 T1
11.000*
5
1
11.7
7.6
153.5
5120 MAKARWAL
66.000*
5
51201 T1
11.000
5
1
9.1
7.5
121.0
5130 TRUG
66.000*
5
51301 T1
11.000
5
1
13.3
12.5
106.2
5130 TRUG
66.000*
5
51302 T2
11.000
5
1
7.1
6.3
112.6
5200 BHAKKAR
66.000
5
5220 MANKERA
66.000*
5
1
58.0
39.0
148.8
5200 BHAKKAR
66.000
5
7455 BHAKKAR
132.00*
5
1
42.4
40.0
106.0
5210 BEHAL
66.000*
5
52101 T1
11.000
5
1
10.8
7.5
143.6
5220 MANKERA
66.000*
5
52201 T1
11.000
5
1
13.4
13.0
102.7
5240 ADHIKOT
66.000*
5
52401 T1
11.000
5
1
17.3
13.0
133.3
5400 JAUHRABD
132.00*
5
54001 T1
11.000
5
1
46.9
40.0
117.4
5403 SHAHPUR
132.00*
5
54031 T1
11.000
5
1
13.6
13.0
104.6
5403 SHAHPUR
132.00*
5
54032 T1
11.000
5
1
13.6
13.0
104.6
5425 KIRANAHL
132.00*
5
54251 T1
11.000
5
1
17.9
13.0
138.0
5425 KIRANAHL
132.00
5
54252 T2
11.000*
5
1
28.3
26.0
108.7
5430 KUDLATHI
132.00*
5
54301 T1
11.000
5
1
20.3
16.0
126.7
5440 BHAMB
132.00*
5
54402 T2
11.000
5
1
45.3
26.0
174.3
5445 SARGODAC
132.00*
5
54451 T
11.000
5
1
50.9
26.0
195.8
5451 126-SBPL
132.00*
5
54511 T1
11.000
5
1
13.3
13.0
102.3
5700 PATANKOT
66.000*
5
57001 T1
11.000
5
1
15.5
13.0
119.0
5700 PATANKOT
66.000*
5
57002 T2
11.000
5
1
22.1
13.0
170.1
5770 BHABRA
66.000*
5
57702 T2
11.000
5
1
5.7
5.6
101.6
5770 BHABRA
66.000*
5
57703 T3
11.000
5
1
10.1
7.5
134.6
7005 SHORKCTY
132.00
5
70052 T2
11.000*
5
1
18.9
13.0
145.6
7842 T-RANGPR
66.000
6
66.000*
5
1
50.4
39.0
129.3
7850 AHMDPRSL
66.000*
5
78502 T2
11.000
5
1
11.3
10.0
113.0
7860 GARMHRJA
66.000*
5
78601 T1
11.000
5
1
18.2
13.0
139.8
7850 AHMDPRSL
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
504760-01-A4
30
Disco Transmission Expansion Plan
National Power System Expansion Plan
Sr.No. Grid Station
KV
PSS/E Bus Rinforcement Required
No.
1
RUKDOGRN
66
5190
2
MANKERA 66
5220
3
ADHIKOT
66
5240
4
SKASARNS
66
5680
5
JHNIAN.S
66
5690
6
7
8
GARMHRJA
Sumandri
Sumandri
66
132
132
7860
4472
4472
9
Jhang‐1
132
4490
10
Piplan
132
5040
11
Makerwal
66
5120
12
Trug
66
5130
13
Jauhrabad
132
5400
14
Shah pur
132
5403
15
Kud Lathi
132
5430
16
Bhamb
132
5440
17
Sargodha‐1
132
5445
18
Pathan kot
66
5700
19
Bhabra
66
5770
20
GARMHRJA
66
7860
21
Jhang Road
132
4440
22
23
Pir Mehal
Kiran Hill
132
132
4482
5425
24
Mianwali
132
5020
25
26
Kala Bagh
126 SB
66
132
5110
5451
27
Kamalia
132
4550
Capacitors of 9 MVAR at T1 and T2 (Also conversion for N‐1) Capacitor of 24 MVAR at 66 KV bus 5220
Increased capacitor from 1.8 to 7.6 MVAR at T1
Added 2.6 MVAR Capacitor at T1 AND T2
Installed 4.2 MVAR Capacitor at T2 (Also conversion for N‐1) 12 MVAR Capacitor installed at 7860 bus
Augmention was Required with 40 MVA T/F
Capacitors of 7.2 MVAR at this T2
Augmentation was required with 40 MVA T/F (Also proposed in Trench‐2)
Augmentation was required with 20/26 MVA T/F
Augmentation was required 7.5 MVA with 13 MVA t/f
Augmented 12.5 MVA T/F with 20/26 T/F,Installed Capacitors of 2.4 MVAR at this T2 (Also conversion for N‐1) Extension of 20/26 MVA T/F.(Also proposed in Trench‐2)
Augmented 10/13 MVA t/f with 20/26 MVA t/f
Augmentation from 16 MVA to 20/26 MVA
Augmentation at T2, 20/26 with 132 kv 40 MVA t/f and 9 MVAR Capacitor
Augmentation was required 20/26 with 132 kv 40 MVA t/f and 9 MVAR Capacitor
Augmented T1 with 20/26 MVA T/F and 4.2 MVAR Capacitors at T2
Augmented T2 of bus 57702 with 10/13 T/F and addes 2.4 MVAR Capacitors
Augmented 10/13 MVA T/F with 20/26MVA
Augmented T3 20/26 t/f with 40 MVA (Also proposed in Trench‐2)
Augmented T2, 20/26 t/f with 40 MVA
Augmented 10/13 MVA t/f with 20/26 MVA
Augmented T2, 20/26 t/f with 40 MVA (Also Extension in Trench‐2) Augmented 7.6 MVA t/f with 20/26 MVA
Augmented 10/13 MVA t/f with 20/26 MVA
Extension of 20/26 MVA T/F (Also proposed in Trench‐2)
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
504760-01-A4
31
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
A few low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
BASE CASE
<-------- B U S -------->
5220 MANKERA
66.000
1.12060
1.12060
1.10000
0.90000
BASE CASE
5230 HYD.THAL
66.000
1.10865
1.10865
1.10000
0.90000
SINGLE 62
4290 BHOWANA
132.00
0.88352
0.97541
1.10000
0.90000
SINGLE 63
4290 BHOWANA
132.00
0.87787
0.97541
1.10000
0.90000
SINGLE 145
5120 MAKARWAL
66.000
0.89431
1.01081
1.10000
0.90000
SINGLE 158
5190 RUKDOGRN
66.000
0.86588
0.98898
1.10000
0.90000
SINGLE 158
5192 T-RAKDRN
66.000
0.89279
1.00757
1.10000
0.90000
SINGLE 171
5240 ADHIKOT
66.000
0.56917
1.00367
1.10000
0.90000
SINGLE 171
5670 QUAIDABD
66.000
0.65730
1.03426
1.10000
0.90000
SINGLE 171
5680 SKASARNS
66.000
0.58232
1.00403
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 62
: OPEN LINE FROM BUS 4450 [FBD.FACT
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 63
: OPEN LINE FROM BUS 4460 [SMNDRIRD
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 145
: OPEN LINE FROM BUS 5100 [DAUDKHEL
66.000] TO BUS 5120 [MAKARWAL
66.000] CKT 1
SINGLE 158
: OPEN LINE FROM BUS 5192 [T-RAKDRN
66.000] TO BUS 5200 [BHAKKAR
66.000] CKT 1
SINGLE 171
: OPEN LINE FROM BUS 5410 [QUAIDABD
132.00] TO BUS 5670 [QUAIDABD
66.000] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
5000*DAUDKHLO
132.00
5100 DAUDKHEL
66.000 1
BASE CASE
40.0
44.0
110.0
4430 NAR.W.RD
132.00
4435*FBD.IND.
132.00 1
SINGLE 43
112.0
140.1
128.0
4430 NAR.W.RD
132.00
4440*JHANG.RD
132.00 1
SINGLE 55
112.0
173.4
163.2
4430 NAR.W.RD
132.00
4440*JHANG.RD
132.00 1
SINGLE 62
112.0
252.5
243.2
4430*NAR.W.RD
132.00
4460 SMNDRIRD
132.00 1
SINGLE 62
112.0
140.3
130.5
4410 CHINOIT ROAD132.00
4420*AGR.UNIV
132.00 1
SINGLE 63
202.0
199.5
101.4
504760-01-A4
32
%
Disco Transmission Expansion Plan
National Power System Expansion Plan
4430 NAR.W.RD
132.00
4440*JHANG.RD
132.00 1
SINGLE 63
112.0
269.7
261.3
4430*NAR.W.RD
132.00
4460 SMNDRIRD
132.00 1
SINGLE 63
112.0
148.6
138.7
4470*GOJRA
132.00
4477 TTSINGHN
132.00 2
SINGLE 75
202.0
209.9
102.3
4470*GOJRA
132.00
4477 TTSINGHN
132.00 1
SINGLE 76
202.0
209.9
102.3
5000*DAUDKHLO
132.00
5001 DAUDKHEL
132.00 2
SINGLE 119
114.0
209.2
176.7
5000*DAUDKHLO
132.00
5001 DAUDKHEL
132.00 1
SINGLE 120
114.0
209.2
176.7
5032 CHASHM-L
132.00
5040*PIPLAN
132.00 1
SINGLE 135
112.0
111.8
104.0
5030 WANBUCHN
132.00
5040*PIPLAN
132.00 1
SINGLE 140
112.0
110.7
105.6
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 43
: OPEN LINE FROM BUS 4410 [CHINOIT ROAD132.00] TO BUS 4420 [AGR.UNIV
132.00] CKT 1
SINGLE 55
: OPEN LINE FROM BUS 4440 [JHANG.RD
132.00] TO BUS 4450 [FBD.FACT
132.00] CKT 1
SINGLE 62
: OPEN LINE FROM BUS 4450 [FBD.FACT
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 63
: OPEN LINE FROM BUS 4460 [SMNDRIRD
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 75
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4477 [TTSINGHN
132.00] CKT 1
SINGLE 76
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4477 [TTSINGHN
132.00] CKT 2
SINGLE 119
: OPEN LINE FROM BUS 5000 [DAUDKHLO
132.00] TO BUS 5001 [DAUDKHEL
132.00] CKT 1
SINGLE 120
: OPEN LINE FROM BUS 5000 [DAUDKHLO
132.00] TO BUS 5001 [DAUDKHEL
132.00] CKT 2
SINGLE 135
: OPEN LINE FROM BUS 5030 [WANBUCHN
132.00] TO BUS 5040 [PIPLAN
132.00] CKT 1
SINGLE 140
: OPEN LINE FROM BUS 5032 [CHASHM-L
132.00] TO BUS 5040 [PIPLAN
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Sr.No. Rinforcement Required
1
2
3
4
5
6
7
8
7
8
9
10
Conversion 66 KV Rukh Dagran G/S to 132 KV.
Conversion 66 KV Fazil G/S to 132 KV.
Conversion 66 KV Trug G/S to 132 KV.
Conversion 66 KV 18‐Hazari G/S to 132 KV.
Conversion 66 KV GM Raja G/S to 132 KV.
New Double Rail Cct. From 132 KV Daudkhel (Mari) to 132 KV Daudkhel
Reconducting Lynx with Greely from 132 KV Piplan‐Chashma
Reconducting Lynx with Greely from 132 KV Piplan‐Wan Bchran
New Double Cct. Rail From 500 KV Jhang Road to 132 KV Jhang Road
New Double Cct. Rail From 220 KV T.T Singh to 132 KV Mureedwala
New Double Cct. Rail From 220 KV T.T Singh to 132 KV Gojra
New Double Cct. Rail From 220 KV Chinoit to 132KV Chinot‐I with IN/OUT,132 KV Chenab Nagar and 132 KV Chinoit‐2
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed FESCO base case for Year2015 with the above mentioned system reinforcements are shown in Appendix-3 (spread
over 6 Sheets).
504760-01-A4
33
Disco Transmission Expansion Plan
National Power System Expansion Plan
7.1.6
“MEPCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of MEPCO by Year-2015 is 3,860 MW. The load flow single
line diagrams of the full MEPCO system are shown in Appendix-2 (spread over 7
Sheets) along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], many voltage problems were recorded
within the MEPCO system as given below. The upper voltage limit for MEPCO system
was set to 1.08 pu instead of 1.05 pu due to the radial nature of the system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
7200 KHANPUR
132.00
6 1.0875 143.55
7220 R.Y.KHAN
132.00
6 1.0920 144.15
7221 RYK-NEW
132.00
6 1.1065 146.05
7225 R.Y.KHN2
132.00
6 1.0935 144.35
7226 RYK-T
132.00
6 1.0970 144.81
7230 SADIQABD
132.00
6 1.0914 144.06
7235 NAWAZABD
132.00
6 1.0932 144.30
7240 J.D.WALI
132.00
6 1.0821 142.84
71501 SAMASATA T-111.000
6 1.1014 12.116
71702 AHMDPR.E T-211.000
6 1.0917 12.009
72001 KHANPUR T-1 11.000
6 1.1115 12.227
72201 R.Y.KHAN T-111.000
6 1.1904 13.094
72202 R.Y.KHAN T-211.000
6 1.1582 12.741
72203 R.Y.KHAN T-311.000
6 1.1526 12.679
72251 R.Y.KHN2 T-111.000
6 1.1425 12.568
72252 R.Y.KHN2 T-211.000
6 1.1544 12.699
72301 SADIQABD T-111.000
6 1.2308 13.539
72302 SADIQABD T-211.000
6 1.2499 13.749
72303 SADIQABD T-311.000
6 1.1772 12.950
72351 NAWAZ T-1
6 1.0830 11.913
72401 J.D.WALI T-111.000
6 1.1709 12.880
11.000
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6450 DHARNWLA
66.000
6 0.9412 62.117
6480 MNCHNBAD
66.000
6 0.8056 53.172
6481 T-MICHBD
66.000
6 0.8102 53.473
6490 MCLD.GNJ
66.000
6 0.7634 50.383
6500 HARONABD
66.000
6 0.9467 62.483
6510 FAQIRWLI
66.000
6 0.8069 53.256
6511 T-FQWALI
66.000
6 0.8610 56.826
6520 FORTABAS
66.000
6 0.8028 52.984
7006 HEAD SIDHNAI132.00
6 0.9128 120.49
7010 KACHAKHU
132.00
6 0.9391 123.96
7025 J.MARYLA
_1132.00
6 0.9468 124.98
7030 KABIRWLA
132.00
6 0.9403 124.12
7032 MP.PAHOR
132.00
6 0.9248 122.08
7141 B.W.P66
66.000
6 0.9462 62.449
7325 LAYYAH
132.00
6 0.9459 124.86
7340 MEHRKHAS
132.00
6 0.9000 118.80
7350 DMR WALA
132.00
6 0.8845 116.75
7360 JATOIJNB
132.00
6 0.8692 114.74
7370 KHRPRSDT
132.00
6 0.8692 114.74
7435 PARCO
132.00
6 0.9270 122.37
7436 T-PARCO
132.00
6 0.9268 122.34
7450 CHAUBARA
132.00
6 0.9231 121.85
7456 CHOKAZAM
132.00
6 0.9485 125.20
7459 KHANGARH
132.00
6 0.9474 125.05
7780 YAZMAN
66.000
6 0.6120 40.393
7790 MARROT
66.000
6 0.3700 24.422
7810 KOTSULTN
66.000
6 0.7718 50.939
7811 T-KOTSUL
66.000
6 0.7761 51.223
504760-01-A4
34
Disco Transmission Expansion Plan
National Power System Expansion Plan
7820 LAYYAH
66.000
6 0.6409 42.297
7825 KAROR.LH
66.000
6 0.5096 33.635
7880 CHAUBARA
66.000
6 0.9219 60.846
7890 NAWANKOT
66.000
6 0.9217 60.833
7891 T.NWANKOT
66.000
6 0.9219 60.846
7920 KOTCHOTA
66.000
6 0.8809 58.139
7921 JAMPUR
66.000
6 0.8135 53.688
7925 CHOTI
66.000
6 0.8496 56.077
7933 FAZALPUR
132.00
6 0.9279 122.48
7935 DAJAL
66.000
6 0.7932 52.353
7951 RAJANPUR
132.00
6 0.9046 119.40
7983 HEADRAJK
66.000
6 0.5450 35.967
60301 QADIRABD T-111.000
6 0.9118 10.030
60501 BNGAHYAT T-111.000
6 0.9258 10.184
61002 NOORPUR T-2 11.000
6 0.9138 10.052
61501 SH.FAZAL T-111.000
6 0.9337 10.271
62102 SAHUKA T-2
6 0.9496 10.445
64801 MNCHNBAD T-111.000
6 0.8212
9.033
64802 MNCHNBAD T-211.000
6 0.7728
8.501
64901 MCLD.GNJ T-111.000
6 0.6387
7.025
65101 FAQIRWLI T-111.000
6 0.8405
9.246
65102 FAQIRWLI T-211.000
6 0.8611
9.472
65201 FORTABAS T-111.000
6 0.8257
9.082
70061 H SIDNAI T-111.000
6 0.9330 10.263
70062 H SIDNAI T-211.000
6 0.7761
8.537
70082 M VIRK T-2
6 0.9241 10.165
70101 KACHAKHU T-111.000
6 0.8442
9.286
70102 KACHAKHU T-211.000
6 0.8708
70202 KHANEWAL T-211.000
6 0.9453 10.398
70203 KHANEWAL T-311.000
6 0.9454 10.399
70251 J.MARL T-1
6 0.9058
11.000
11.000
11.000
9.579
9.964
70252 J.MARYLA T-211.000
6 0.9060
70301 KABIRWLA T-111.000
6 0.9458 10.404
70302 KABIRWLA T-211.000
6 0.9313 10.244
70321 MP PAHOR T-111.000
6 0.8627
9.490
70322 MP PAHOR T-211.000
6 0.8614
70401 GARHMORE T-111.000
6 0.8859
9.745
70751 MUKHDM.R T-111.000
6 0.9262 10.188
70752 MUKHDM.R T-211.000
6 0.9355 10.291
71402 BHAWALPR T-211.000
6 0.9488 10.437
71851 KHANBELA T-111.000
6 0.9387 10.326
73281 KBGASHER T-111.000
6 0.9403 10.344
73303 MZFRGARH T-311.000
6 0.9496 10.445
73402 MEHRKHAS T-211.000
6 0.9269 10.195
73501 DMR WALA T-111.000
6 0.9293 10.222
73502 DMR WALA T-211.000
6 0.8744
9.618
73601 JATOIJNB T-111.000
6 0.8411
9.253
73602 JATOIJNB T-211.000
6 0.8592
9.451
73701 KHRPRSDT T-111.000
6 0.8952
9.848
74001 TAUNSA T-1
11.000
6 0.8937
9.831
74002 TAUNSA T-2
6 0.8944
9.839
74562 C AZAM T-2
11.000
6 0.8576
9.434
11.000
9.966
9.476
74591 KHANGARH T-111.000
6 0.9135 10.049
74651 KOTCHUTA T-111.000
6 0.9464 10.411
77801 YAZMAN T-1
11.000
6 0.4548
5.003
77901 MAROOT T-1
11.000
6 0.2968
3.265
77902 MAROOT T-2
11.000
6 0.3255
3.580
78101 KOTSULTN T-111.000
6 0.6447
7.091
78102 KOTSULTN T-211.000
6 0.7186
7.905
78251 KAROR.LH T-111.000
6 0.3729
4.102
78252 KAROR.LH T-211.000
6 0.3911
4.302
78312 FATEPUR T-2 11.000
6 0.7636
8.400
78901 NAWANKOT T-111.000
6 0.9145 10.060
79211 JAMPUR T-1
11.000
6 0.7649
8.414
79251 CHOTI T-1
11.000
6 0.7385
8.123
79301 JAMPUR T-1
11.000
6 0.9317 10.248
79302 JAMPUR T-2
11.000
6 0.8855
9.741
79331 FAZALPUR T-111.000
6 0.8426
9.268
79332 FAZALPUR T-211.000
6 0.7883
8.671
79351 DAJAL T-1
11.000
6 0.7259
7.985
79512 RAJANPUR T-211.000
6 0.9105 10.015
79811 ALI PUR T-1 11.000
6 0.8960
9.856
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
-------------------------------------------------------------------------------SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
520 PIRNGHAB
220.00*
15
7100 P.GAIB-1
132.00
6
1
504.6
254.0
198.7
540 KAPCO220
220.00*
15
7300 KAPCO
132.00
6
1
494.8
400.0
123.7
550 BAHWALPR
220.00*
15
7139 B.W.P-N
132.00
6
1
634.9
480.0
132.3
6030 QADIRABD
132.00*
6
60301 QADIRABD T-111.000
6
1
13.1
13.0
100.7
6150 SH.FAZAL
132.00*
6
61501 SH.FAZAL T-111.000
6
1
28.9
26.0
111.2
6150 SH.FAZAL
132.00*
6
61502 SH.FAZAL T-211.000
6
1
14.7
13.0
113.3
6178 KARAMPUR
132.00
6
61782 KARAMPUR T-211.000*
6
1
11.3
10.0
112.8
504760-01-A4
35
Disco Transmission Expansion Plan
National Power System Expansion Plan
6190 BWL.NAGR
132.00*
6
66.000
6
1
46.8
37.5
124.9
6421 K.P.T0MI
132.00*
6
64211 K.P.T0MI T-111.000
6
1
13.6
13.0
104.8
6450 DHARNWLA
66.000*
6
64501 DHARNWLA T-111.000
6
1
15.4
13.0
118.8
6451 DAMMARWALA
132.00*
6
64511 DAMRWALA T-111.000
6
1
11.0
10.0
109.8
6490 MCLD.GNJ
66.000*
6
64901 MCLD.GNJ T-111.000
6
1
16.1
13.0
123.8
6520 FORTABAS
66.000*
6
65201 FORTABAS T-111.000
6
1
13.8
13.0
106.5
7006 HEAD SIDHNAI132.00*
6
70061 H SIDNAI T-111.000
6
1
14.1
13.0
108.2
7008 M VIRK
132.00*
6
70081 M VIRK T-1
11.000
6
1
16.7
13.0
128.6
7020 KHANEWAL
132.00*
6
70202 KHANEWAL T-211.000
6
1
29.8
26.0
114.5
7020 KHANEWAL
132.00*
6
70203 KHANEWAL T-311.000
6
1
40.3
40.0
100.7
7030 KABIRWLA
132.00*
6
70301 KABIRWLA T-111.000
6
1
35.2
26.0
135.2
7030 KABIRWLA
132.00*
6
70302 KABIRWLA T-211.000
6
1
39.5
26.0
152.0
7040 GARHMORE
132.00*
6
70401 GARHMORE T-111.000
6
1
25.3
13.0
194.4
7070 MAILSI
132.00*
6
70701 MAILSI T-1
11.000
6
1
28.3
26.0
108.9
7075 MUKHDM.R
132.00*
6
70751 MUKHDM.R T-111.000
6
1
14.2
13.0
109.3
7100 P.GAIB-1
132.00
6
7280 MN.VR.RD
132.00*
6
1
153.3
112.0
136.9
7100 P.GAIB-1
132.00
6
7285 QASIMPUR
132.00*
6
1
115.9
112.0
103.5
7120 LODHRAN
132.00*
6
71201 LODHRAN T-1 11.000
6
1
29.0
26.0
111.6
7120 LODHRAN
132.00*
6
71202 LODHRAN T-2 11.000
6
1
30.6
26.0
117.9
7130 BU.JADID
132.00*
6
71301 BU.JADID T-111.000
6
1
25.2
13.0
193.8
7139 B.W.P-N
132.00
6
7140 BHAWALPR
132.00*
6
2
133.1
112.0
118.8
7139 B.W.P-N
132.00
6
7145 BPUR CANTT
112.00*
6
1
147.0
112.0
131.2
7140 BHAWALPR
132.00*
6
7141 B.W.P66
66.000
6
1
80.3
37.5
214.1
7140 BHAWALPR
132.00*
6
7145 BPUR CANTT
112.00
6
1
112.2
112.0
100.2
7141 B.W.P66
66.000
6
7780 YAZMAN
66.000*
6
1
75.6
39.0
193.9
7147 KARORPCA
132.00*
6
71471 KARORPCA T-111.000
6
1
33.4
26.0
128.4
7147 KARORPCA
132.00*
6
71472 KARORPCA T-211.000
6
1
29.1
26.0
111.9
7160 LIAQATPR
132.00*
6
71602 LIAQATPR T-211.000
6
1
27.2
26.0
104.6
7170 AHMDPR.E
132.00*
6
71703 AHMDPR.E T-311.000
6
1
27.5
26.0
105.9
7178 CHAK 139
132.00*
6
71781 CHAK 139 T-111.000
6
1
14.3
13.0
110.3
7180 FEROZA
132.00*
6
132.00
6
1
123.3
112.0
110.0
7180 FEROZA
132.00*
6
71801 FEROZA T-1
11.000
6
1
16.1
13.0
123.6
7185 KHANBELA
132.00*
6
71851 KHANBELA T-111.000
6
1
32.8
26.0
126.1
7200 KHANPUR
132.00*
6
72002 KHANPUR T-2 11.000
6
1
29.2
26.0
112.3
7210 MWQRSHIA
132.00*
6
72101 MWQRSHIA T-111.000
6
1
31.4
26.0
120.8
7220 R.Y.KHAN
132.00*
6
72201 R.Y.KHAN T-111.000
6
1
28.9
26.0
111.2
7220 R.Y.KHAN
132.00*
6
72202 R.Y.KHAN T-211.000
6
1
49.5
40.0
123.8
7220 R.Y.KHAN
132.00*
6
72203 R.Y.KHAN T-311.000
6
1
36.1
26.0
138.7
7225 R.Y.KHN2
132.00*
6
72251 R.Y.KHN2 T-111.000
6
1
22.1
13.0
170.2
7225 R.Y.KHN2
132.00*
6
72252 R.Y.KHN2 T-211.000
6
1
14.8
13.0
114.2
7250 MN.KH.RD
132.00*
6
72502 MN.KH.RD T-211.000
6
1
29.7
26.0
114.2
7265 QASIMBGH
132.00*
6
72651 Q BAGH T-1
11.000
6
1
28.5
26.0
109.6
7265 QASIMBGH
132.00*
6
72652 Q BAGH T-2
11.000
6
1
28.6
26.0
110.0
7285 QASIMPUR
132.00*
6
7955 QASIMPUR
66.000
6
2
43.8
37.0
118.3
7288 SHUJABAD
132.00*
6
72882 SHUJABAD T-211.000
6
1
28.1
26.0
108.0
7290 MESCO
132.00
6
72903 MESCO T-3
11.000*
6
1
26.2
26.0
100.7
7300 KAPCO
132.00
6
7331 KOTADU-O
132.00*
6
1
117.9
112.0
105.2
7300 KAPCO
132.00
6
7331 KOTADU-O
132.00*
6
2
117.9
112.0
105.2
7300 KAPCO
132.00*
6
7400 TAUNSA
132.00
6
1
151.5
112.0
135.3
7320 GUJRAT.S
132.00*
6
73202 GUJRAT.S T-211.000
6
1
11.5
6.3
182.5
7325 LAYYAH
132.00*
6
73252 LAYYAH T-2
11.000
6
1
27.1
26.0
104.1
7328 KBGASHER
132.00*
6
73281 KBGASHER T-111.000
6
1
29.9
26.0
114.9
7330 MZFRGARH
132.00
6
7459 KHANGARH
132.00*
6
1
114.1
112.0
101.9
7331 KOTADU-O
132.00*
6
7332 N.A.WALI
132.00
6
1
115.6
112.0
103.2
7340 MEHRKHAS
132.00*
6
73401 MEHRKHAS T-111.000
6
1
13.6
10.0
135.7
504760-01-A4
6470 BWL.NAGR
7200 KHANPUR
36
Disco Transmission Expansion Plan
National Power System Expansion Plan
7340 MEHRKHAS
132.00*
6
73402 MEHRKHAS T-211.000
6
1
28.8
26.0
110.8
7360 JATOIJNB
132.00*
6
73601 JATOIJNB T-111.000
6
1
11.5
10.0
114.9
7370 KHRPRSDT
132.00*
6
73701 KHRPRSDT T-111.000
6
1
11.4
10.0
113.9
7400 TAUNSA
132.00*
6
74001 TAUNSA T-1
11.000
6
1
13.7
13.0
105.7
7456 CHOKAZAM
132.00*
6
74562 C AZAM T-2
11.000
6
1
15.7
13.0
120.8
7460 D.G.KHAN
132.00*
6
7910 D.G.KHAN
66.000
6
1
36.0
31.5
114.2
7465 KOTCHUTA
132.00*
6
74651 KOTCHUTA T-111.000
6
1
31.1
26.0
119.5
7590 SKHISRWR
132.00*
6
75901 SKHISRWR T-111.000
6
1
8.5
6.3
135.1
7780 YAZMAN
66.000*
6
77801 YAZMAN T-1
11.000
6
1
15.5
14.0
111.0
7800 KOTADDU
66.000
6
7811 T-KOTSUL
66.000*
6
1
53.9
39.0
138.2
7810 KOTSULTN
66.000*
6
78101 KOTSULTN T-111.000
6
1
8.1
5.6
144.6
7810 KOTSULTN
66.000*
6
78102 KOTSULTN T-211.000
6
1
5.7
5.0
115.0
7825 KAROR.LH
66.000*
6
78252 KAROR.LH T-211.000
6
1
9.5
6.3
150.7
7831 FATEHPUR
132.00*
6
78311 FATEHPUR T-111.000
6
1
18.0
13.0
138.7
7831 FATEHPUR
132.00*
6
78312 FATEPUR T-2 11.000
6
1
18.4
13.0
141.8
7900 SSDIN
66.000*
6
79002 SSDIN T-2
11.000
6
1
6.6
2.5
265.9
7925 CHOTI
66.000*
6
79251 CHOTI T-1
11.000
6
1
15.2
12.5
121.3
7933 FAZALPUR
132.00*
6
79331 FAZALPUR T-111.000
6
1
13.9
13.0
107.3
7933 FAZALPUR
132.00*
6
79332 FAZALPUR T-211.000
6
1
19.3
13.0
148.2
7935 DAJAL
66.000*
6
79351 DAJAL T-1
11.000
6
1
6.5
6.3
103.0
7951 RAJANPUR
132.00*
6
79512 RAJANPUR T-211.000
6
1
17.1
13.0
131.9
7965 JLALPRPW
66.000*
6
79651 JLALPRPW T-111.000
6
1
15.7
13.0
120.5
7965 JLALPRPW
66.000*
6
79652 JLALPRPW T-211.000
6
1
13.9
13.0
107.2
7965 JLALPRPW
66.000*
6
79653 JLALPRPW T-311.000
6
1
5.9
5.0
117.4
7965 JLALPRPW
66.000*
6
79654 JLALPRW T-4 11.000
6
1
5.3
5.0
106.2
7974 UCH.SHRF
132.00*
6
79741 UCH.SHRF T-211.000
6
1
14.3
13.0
110.0
7974 UCH.SHRF
132.00*
6
79742 UCH.SHRF T-311.000
6
1
13.1
13.0
100.7
7981 ALI PUR
132.00*
6
79811 ALI PUR T-1 11.000
6
1
18.3
13.0
141.1
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
504760-01-A4
37
Disco Transmission Expansion Plan
National Power System Expansion Plan
Sub Station
Transformer
NO.
KV
Chishtian
Dunyapur
Garah More
Hasilpur
Jehanian
Khanewal
Karampur
Karoor Pacca
Mailsi
Noorpur
Sheikh Fazal
Sahuka
T-1
T-3
T-1
T-2
T-2
T-2
T-2
T-1
T-3
T-2
T-2
T-2
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
Chak 83/12.L.
T-1
Head Sidhnai
2015
Proposed
MVA
Associated
Transmission Lines
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Extension
Augmentation
Augmentation
Extension
26
40
26
26
40
40
13
40
26
26
26
26
66/11
Conversion
26
kv Mian Channu-Chak 83/12
L, 10 KM Lynx SDT
T-1
66/11
Conversion
13
Kabirwala - Head Sidhnai 35
km Lynx
K.P.Tamewali
T-1
66/11
Conversion
13
Lohanra - K.P.Tamewali D/C
25 km Rail
Noorsar
T-1
66/11
Conversion
13
Chishtian - Bahawalnagar S/C,
I/O at Noorsar 26 KM Lynx
Ahmad Pur East
Baghdad-ul-Jadid
Dammar Wala
Feroza
Gujrat South
Jamal Din Wali
Jalal Pur Pirwala
Jatoi
Kabirwala
Kabirwala
Khanewal Road
Khan Pur
Lodhran
Layyah
MESCO Multan
MESCO Multan
M.W.Qureshian
Mahra Khas
Rahim Yar Khan I
Rahim Yar Khan I
Rahim Yar Khan I
T-2
T-1
T-1
T-1
T-2
T-2
T-3
T-1
T-1
T-2
T-2
T-1
T-2
T-1
T-2
T-3
T-2
T-1
T-1
T-2
T-3
132/11
132/11
132/11
132/11
132/11
132/11
66/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
132/11
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Extension
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Extension
Augmentation
Augmentation
Augmentation
Extension
Augmentation
Augmentation
Augmentation
Augmentation
40
26
13
26
26
26
13
13
40
40
40
40
26
40
40
40
26
26
40
40
40
Reinforcements to overcome (N-0) violations; continue...
504760-01-A4
38
Disco Transmission Expansion Plan
National Power System Expansion Plan
Sub Station
Transformer
NO.
KV
Rahim Yar Khan II
Rojhan
Rajan Pur
Shujabad
Taunsa
Uch Sharif
T-1
T-1
T-2
T-2
T-1
T-1
132/11
132/11
132/11
132/11
132/11
132/11
Ali Pur
T-1
Dajal
2015
Proposed
MVA
Associated
Transmission Lines
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
40
26
26
40
26
26
66/11
Conversion
26
T-1
66/11
Augmentation
13
Fazil pur
T-1
66/11
Conversion
13
Jampur - Fazalpur 37 KM
Lynx S/C
Fateh Pur
T-1
66/11
Conversion
26
Chowk Azam - Fateh Pur 42
KM Lynx S/c
Head Rajkan
T-1
66/11
Conversion
26
Yazman - Head Rajkan 25
KM Lynx S/C
Kot Sultan
T-1
66/11
Conversion
26
Kot Addu -T Sul - Kot
Sultan43 + 2 km Lynx S/C
Karoor Lal Eason
T-1
66/11
Conversion
26
T-Kot Sultan - Karoor Lal
Eason 57 km Lynx S/c
Lal Sohanra
T-1
66/11
Conversion
13
D/C Bahawal Pur New - Lal
Sohanra 50 KM Rail
Marrot
Shah Sadar Din
T-1
T-2
66/11
66/11
Conversion
Augmentation
26
13
Uch Sharif (kot Khalifa)
T-1
66/11
Conversion
26
A.P.East - Uch Sharif - Alipur
20+30 KM Lynx
Yazman
T-1
66/11
Conversion
26
Bahawalpur New - Yazman
D/C 35 KM Rail
WAPDA Town
WAPDA Town
Qasim Bagh
Musavirk
T-1 132/11
T-2 132/11
T-1 132/11
T-1 132/11
Augmentation
Augmentation
Augmentation
Augmentation
60
60
40
26
Uch Shariff - Ali Pur 26 KM
Lynx S/C
Reinforcements to overcome (N-0) violations; continue...
504760-01-A4
39
Disco Transmission Expansion Plan
National Power System Expansion Plan
Transmission Line
Type
KM
Bahawalpur New - 132 kv Bahawal Pur
Reconductoring from lynx to rail
7
Bahawal Pur New- Yazman
D/C new line with Rail conductor
35
Yazman- Maroot
SDT new line with Greeley conductor
66
T-Kot Sultan- Karoor Lal Eason
SDT 57 km New line with Lynx Conductor
57
Kot Addu - T-Kot Sultan – Kot Sultan
SDT New line with Lynx Conductor
47
T Faqirwali-Fort Abbas
SDT New line with Lynx conductor
29
KAPCO – Shahdan Lund
SDT New line with rail.
38
KAPCO – Chowk Azam
SDT New line with rail
68
Shahdan Lund – Chowk Azam
SDT New line with rail.
30
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
One severe line outage would lead to area collapse was recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
SINGLE 212
EVENTS
: OPEN LINE FROM BUS 7460 [D.G.KHAN
132.00] TO BUS 7930 [JAMPUR
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
A few low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 92
7006 HEAD SIDHNAI132.00
0.89039
0.99242
1.10000
0.91000
SINGLE 92
7030 KABIRWLA
132.00
0.89039
0.99242
1.10000
0.91000
SINGLE 92
7032 MP.PAHOR
132.00
0.87851
0.98329
1.10000
0.91000
SINGLE 95
7055 T-C.211
132.00
0.88327
0.98928
1.10000
0.91000
SINGLE 95
7060 CHAK.211
132.00
0.88028
0.98680
1.10000
0.91000
SINGLE 95
7070 MAILSI
132.00
0.88851
0.98226
1.10000
0.91000
SINGLE 196
7436 T-PARCO
132.00
0.90912
0.97008
1.10000
0.91000
SINGLE 196
7951 RAJANPUR
132.00
0.88782
0.95116
1.10000
0.91000
SINGLE 197
7435 PARCO
132.00
0.90813
0.97044
1.10000
0.91000
SINGLE 197
7436 T-PARCO
132.00
0.90811
0.97008
1.10000
0.91000
504760-01-A4
40
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 197
7951 RAJANPUR
132.00
0.88675
0.95116
1.10000
0.91000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 92
: OPEN LINE FROM BUS 7030 [KABIRWLA
132.00] TO BUS 7109 [P.GAIB-2
132.00] CKT 1
SINGLE 95
: OPEN LINE FROM BUS 7050 [JEHANIAN
132.00] TO BUS 7055 [T-C.211
132.00] CKT 1
SINGLE 196
: OPEN LINE FROM BUS 7435 [PARCO
132.00] TO BUS 7436 [T-PARCO
132.00] CKT 1
SINGLE 197
: OPEN LINE FROM BUS 7435 [PARCO
132.00] TO BUS 7470 [ROJHAN
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
6666 MULTAN-N
132.00
7250*MN.KH.RD
132.00 2
SINGLE 74
202.0
248.9
118.8
%
6666 MULTAN-N
132.00
7250*MN.KH.RD
132.00 1
SINGLE 75
202.0
248.9
118.8
7030*KABIRWLA
132.00
7109 P.GAIB-2
132.00 1
SINGLE 89
112.0
107.3
100.2
7100 P.GAIB-1
132.00
7280*MN.VR.RD
132.00 2
SINGLE 104
89.0
94.9
103.4
7140*BHAWALPR
132.00
7145 BPUR CANTT
132.00 1
SINGLE 117
112.0
121.9
106.7
7139 B.W.P-N
132.00
7140*BHAWALPR
132.00 2
SINGLE 118
112.0
147.2
129.8
7139 B.W.P-N
132.00
7170*AHMDPR.E
132.00 2
SINGLE 120
112.0
132.3
117.5
7139 B.W.P-N
132.00
7140*BHAWALPR
132.00 2
SINGLE 124
112.0
122.9
107.8
7300*KAPCO
132.00
7330 MZFRGARH
132.00 1
SINGLE 171
112.0
121.4
103.3
7300*KAPCO
132.00
7400 TAUNSA
132.00 1
SINGLE 176
112.0
129.3
109.9
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 74
: OPEN LINE FROM BUS 6666 [MULTAN-N
132.00] TO BUS 7250 [MN.KH.RD
132.00] CKT 1
SINGLE 75
: OPEN LINE FROM BUS 6666 [MULTAN-N
132.00] TO BUS 7250 [MN.KH.RD
132.00] CKT 2
SINGLE 89
: OPEN LINE FROM BUS 7020 [KHANEWAL
132.00] TO BUS 7030 [KABIRWLA
132.00] CKT 1
SINGLE 104
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7280 [MN.VR.RD
132.00] CKT 1
SINGLE 117
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7140 [BHAWALPR
132.00] CKT 2
SINGLE 118
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 1
SINGLE 120
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7170 [AHMDPR.E
132.00] CKT 1
SINGLE 124
: OPEN LINE FROM BUS 7140 [BHAWALPR
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 1
SINGLE 171
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7321 [T-GUJRAT
132.00] CKT 1
SINGLE 176
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7395 [SHAD.LND
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
504760-01-A4
41
Disco Transmission Expansion Plan
National Power System Expansion Plan
No.
Transmission Line
Additions/Modification
KM
1
Multan New to Multan Khanewal
Double circuit Rail to twin bundle rail
1.7
2
Qasim Pur – Vehari Rd Multan 2nd circuit stringing 7 km with Lynx
7
4
132 kv Bahawalpur New‐ Bahawalpur Cantt D/C 7 km with rail conductor.
5
132 Bahawalpur Cantt – Bahawalpur D/C 6 km with Greeley conductor.
6
6
Piran Gaib – Qasim Pur
Reconductoring with Greeley 10 km.
10
7
KAPCO – Muzaffargarh Reconductoring 49 km Lynx to Greeley.
49
8
KAPCO – Taunsa Reconductoring 56 km Lynx to Greeley.
56
9
Pirangaib II – Khanewal Reconductoring 44 km Lynx to Greeley.
44
No.
Substation
Capacitors
1
132 Kv Rajanpur 12 MVAR
2
132 kv Mailsi 24 MVAR
3
132 kv Jampur
36 MVAR
7
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed MEPCO base case for Year2015 with the above mentioned system reinforcements are given in Appendix-3 (spread
over 7 Sheets).
7.1.7
“HESCO & SEPCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of HESCO and SEPCO by Year-2015 is 2,607 MW. The
load flow single line diagrams of the full HESCO and SEPCO systems are shown in
Appendix-2 (spread over 10 Sheets) along with the system additions from Year-2010 to
Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], many voltage problems were recorded
within the HESCO and SEPCO systems as given below.
504760-01-A4
42
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
7999 GUDDU-2
132.00
7 1.0600 139.92
8000 GUDDU-1
132.00
7 1.0550 139.26
8029 LIBERTY
132.00
7 1.0500 138.60
8089 ROHRI-NW
132.00
7 1.0595 139.85
8090 ROHRI
132.00
7 1.0509 138.72
8101 KANDRA-P
132.00
7 1.0562 139.41
8160 MORO
132.00
7 1.0583 139.69
8169 WAHI PANDHI 132.00
7 1.0973 144.84
8170 DADU NEW
132.00
7 1.1038 145.71
8172 JOHI
132.00
7 1.0995 145.14
8174 SEHWAN
132.00
7 1.0643 140.49
8175 BHAN SAEDABD132.00
7 1.0877 143.58
8176 SHALAMNI
132.00
7 1.0624 140.23
8177 PARCO
132.00
7 1.0809 142.68
8180 KHANOT
132.00
7 1.0730 141.64
8219 SHIKAR-N
132.00
7 1.0847 143.18
8220 SHIKARPR
132.00
7 1.0796 142.50
8222 GHARI YASIN 132.00
7 1.0537 139.08
8260 MEHAR
132.00
7 1.0520 138.87
8261 FAREEDABAD
132.00
7 1.0506 138.68
8270 KPN SHAH
132.00
7 1.0527 138.96
8280 DADU OLD
132.00
7 1.0975 144.87
8450 LARKANA
66.000
7 1.0956 72.310
8490 SHADADKT
66.000
7 1.0820 71.413
9040 SANGHAR
132.00
7 1.0524 138.91
9041 KANDARI
132.00
7 1.0611 140.07
9090 HALAROAD
132.00
7 1.0784 142.35
9095 GHANGHRA MOR132.00
7 1.0726 141.58
9100 TANDOJAM
132.00
7 1.0719 141.49
9119 T/CHAMBER
132.00
7 1.0706 141.32
9120 T.A.YAR
132.00
7 1.0705 141.30
9121 CHAMBER
132.00
7 1.0701 141.26
9125 SULTNABD
132.00
7 1.0675 140.91
9130 MIRPURKHAS
132.00
7 1.0675 140.91
9131 M.KHS.NW
132.00
7 1.0789 142.42
9150 PHULLELI
132.00
7 1.0741 141.79
9159 HYD-TMRD
132.00
7 1.0749 141.89
9160 HYDNTPS
132.00
7 1.0697 141.20
9163 KOHSAR
132.00
7 1.0628 140.28
9170 ZEALPAKC
132.00
7 1.0695 141.17
9180 LATIFABAD
132.00
7 1.0694 141.17
9190 KOTRI SITE
132.00
7 1.0671 140.85
9200 KOTRI
132.00
7 1.0700 141.24
9220 T.M.KHAN
132.00
7 1.0549 139.25
9225 JHIRK
132.00
7 1.0579 139.64
9230 JHAMPIR
132.00
7 1.0586 139.74
9235 SHAKH BHRKO 132.00
7 1.0531 139.01
9256 NTDC GHARO
220.00
7 1.0526 231.57
9270 MIRPURSK
132.00
7 1.0502 138.62
9390 LAKHRA
132.00
7 1.0789 142.41
9400 JAMSHORO NEW132.00
7 1.0836 143.03
9410 QASIMABAD-I 132.00
7 1.0590 139.78
9411 HILLTOP
132.00
7 1.0562 139.42
9415 QASIMABAD-II132.00
7 1.0782 142.32
9420 JAMSRO OLD
132.00
7 1.0798 142.54
9425 NOORIABAD
132.00
7 1.0543 139.17
9428 NTDC JHAMPIR132.00
7 1.0592 139.81
9430 GULSHN SHBZ 132.00
7 1.0724 141.55
9440 KALUKUHR
132.00
7 1.0527 138.96
9441 SONEX
132.00
7 1.0527 138.96
9442 SOUTH-CF
132.00
7 1.0528 138.96
9445 D.B.CMNT
132.00
7 1.0527 138.96
9446 ESA-CF
132.00
7 1.0501 138.62
9447 T.B KHAN
132.00
7 1.0506 138.68
9455 MATIARI
132.00
7 1.0559 139.38
9494 SAMARO
66.000
7 1.0799 71.276
9498 UMARKOT
66.000
7 1.0727 70.799
9502 CHACHRO
66.000
7 1.0646 70.267
9506 PITHORO
66.000
7 1.0711 70.693
9507 MITHI
66.000
7 1.0603 69.981
9526 DIPLO
66.000
7 1.0518 69.419
9534 SANGHAR
66.000
7 1.0670 70.419
9536 JAMRAOHD
66.000
7 1.0515 69.399
9542 MIRPURKH
66.000
7 1.0543 69.585
9595 KUNRI
66.000
7 1.0544 69.587
81601 1
11.000
7 1.0574 11.631
81691 1
11.000
7 1.0686 11.754
81801 1
11.000
7 1.0557 11.612
82201 1
11.000
7 1.0559 11.614
82202 2
11.000
7 1.0639 11.703
82401 1
11.000
7 1.0691 11.760
82621 1
11.000
7 1.0639 11.702
82802 2
11.000
7 1.0633 11.697
83602 2
11.000
7 1.0521 11.573
83603 3
11.000
7 1.0689 11.757
90402 2
11.000
7 1.0549 11.604
90602 2
11.000
7 1.0853 11.938
91001 1
11.000
7 1.0593 11.653
91201 1
11.000
7 1.0740 11.814
91202 2
11.000
7 1.0537 11.591
91211 1
11.000
7 1.0622 11.685
91501 1
11.000
7 1.0507 11.558
91502 2
11.000
7 1.0777 11.855
91902 2
11.000
7 1.0618 11.680
92202 2
11.000
7 1.0616 11.677
92301 1
11.000
7 1.0608 11.669
94201 1
11.000
7 1.0663 11.729
94202 2
11.000
7 1.0763 11.839
94301 1
11.000
7 1.0698 11.768
94401 1
11.000
7 1.0645 11.709
504760-01-A4
43
Disco Transmission Expansion Plan
National Power System Expansion Plan
95021 1
11.000
7 1.0511 11.562
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
8300 ROHRI
66.000
7 0.9137 60.302
8310 NARA C-1
66.000
7 0.4752 31.362
8320 NARA C-2
66.000
7 0.3440 22.706
8330 ROHRI CMT
66.000
7 0.9129 60.253
8340 RASULABD
66.000
7 0.4037 26.644
8345 THARI MIRWAH66.000
7 0.3456 22.810
81002 2
11.000
7 0.9486 10.435
81202 2
11.000
7 0.9493 10.442
83101 1
11.000
7 0.4671
5.138
83102 2
11.000
7 0.4560
5.016
83201 1
11.000
7 0.2895
3.185
83202 2
11.000
7 0.3224
3.547
83401 1
11.000
7 0.3703
4.074
83402 2
11.000
7 0.3160
3.476
83451 1
11.000
7 0.3211
3.532
83452 2
11.000
7 0.3171
3.488
83453 3
11.000
7 0.2910
3.200
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
8050 K.P.MEHR
132.00*
7
80501 1
11.000
7
1
20.9
13.0
160.5
8080 PANUAKIL
132.00*
7
80801 1
11.000
7
1
27.5
26.0
105.8
8089 ROHRI-NW
132.00
7
8090 ROHRI
132.00*
7
1
131.7
112.0
117.6
8089 ROHRI-NW
132.00
7
8090 ROHRI
132.00*
7
2
131.7
112.0
117.6
8090 ROHRI
132.00*
7
8300 ROHRI
66.000
7
1
109.5
37.5
292.1
8100 KHAIRPUR
132.00*
7
81001 1
11.000
7
1
28.7
26.0
110.4
8100 KHAIRPUR
132.00*
7
81002 2
11.000
7
1
30.2
26.0
116.1
8110 KOT DIJI
132.00*
7
81101 1
11.000
7
1
15.6
13.0
120.1
8140 KANDIARO
132.00*
7
81402 2
11.000
7
1
26.5
26.0
101.8
8160 MORO
132.00*
7
81601 1
11.000
7
1
31.1
26.0
119.8
8160 MORO
132.00*
7
81602 2
11.000
7
1
9.6
7.5
128.2
8172 JOHI
132.00*
7
81721 1
11.000
7
1
13.2
13.0
101.8
8175 BHAN SAEDABD132.00*
7
81751 1
11.000
7
1
16.7
13.0
128.5
8190 KANDH KOT
132.00*
7
81901 1
11.000
7
1
13.8
13.0
106.3
8190 KANDH KOT
132.00*
7
81902 2
11.000
7
1
27.7
26.0
106.4
8200 THULL
132.00*
7
82002 2
11.000
7
1
14.6
13.0
112.6
8210 KARAMPUR
132.00*
7
82101 1
11.000
7
1
17.9
13.0
137.8
8219 SHIKAR-N
132.00*
7
82191 1
11.000
7
1
17.8
13.0
136.9
8219 SHIKAR-N
132.00*
7
82192 2
11.000
7
1
17.8
13.0
136.9
8240 RATODERO
132.00
7
82401 1
11.000*
7
1
13.7
13.0
105.3
8240 RATODERO
132.00*
7
82402 2
11.000
7
1
15.4
13.0
118.7
8260 MEHAR
132.00*
7
82601 1
11.000
7
1
28.4
26.0
109.1
8270 KPN SHAH
132.00*
7
82702 2
11.000
7
1
14.0
13.0
107.9
8275 RHMNI NAGAR 132.00*
7
82751 1
11.000
7
1
18.2
13.0
140.0
8300 ROHRI
66.000
7
66.000*
7
1
54.0
39.0
138.3
8470 QAMBER
66.000*
7
84702 2
11.000
7
1
14.1
13.0
108.7
8480 WARAH
66.000*
7
84801 1
11.000
7
1
14.3
13.0
109.8
504760-01-A4
8340 RASULABD
44
Disco Transmission Expansion Plan
National Power System Expansion Plan
8500 GHARI KHAIRO66.000*
7
85001 1
11.000
7
1
9.1
7.5
121.4
8520 RADHAN
66.000*
7
85201 1
11.000
7
1
16.1
13.0
123.6
9090 HALAROAD
132.00*
7
90901 1
11.000
7
1
32.6
26.0
125.3
9090 HALAROAD
132.00*
7
90902 2
11.000
7
1
32.0
26.0
123.1
9095 GHANGHRA MOR132.00*
7
90951 1
11.000
7
1
31.6
26.0
121.7
9130 MIRPURKHAS
132.00*
7
91303 3
11.000
7
1
29.1
26.0
111.8
9140 SAMARO
132.00*
7
91401 1
11.000
7
1
14.3
13.0
110.3
9150 PHULLELI
132.00*
7
91501 1
11.000
7
1
30.4
26.0
116.8
9150 PHULLELI
132.00
7
91502 2
11.000*
7
1
29.7
26.0
114.1
9160 HYDNTPS
132.00*
7
91601 1
11.000
7
1
32.6
26.0
125.3
9160 HYDNTPS
132.00*
7
91602 2
11.000
7
1
30.6
26.0
117.8
9180 LATIFABAD
132.00*
7
91801 1
11.000
7
1
42.7
40.0
106.6
9180 LATIFABAD
132.00*
7
91802 2
11.000
7
1
43.1
40.0
107.6
9240 THATTA
132.00*
7
92402 2
11.000
7
1
13.4
13.0
103.3
9410 QASIMABAD-I 132.00*
7
94101 1
11.000
7
1
43.4
40.0
108.5
9410 QASIMABAD-I 132.00*
7
94102 2
11.000
7
1
26.6
26.0
102.4
9410 QASIMABAD-I 132.00*
7
94103 3
11.000
7
1
30.9
26.0
119.0
9410 QASIMABAD-I 132.00*
7
94104 4
11.000
7
1
30.9
26.0
119.0
9420 JAMSRO OLD
132.00*
7
94201 1
11.000
7
1
13.4
13.0
103.4
9420 JAMSRO OLD
132.00
7
94202 2
11.000*
7
1
13.3
13.0
102.6
9455 MATIARI
132.00*
7
94551 1
11.000
7
1
14.9
13.0
115.0
9479 DIGRI
132.00*
7
94791 1
11.000
7
1
14.3
13.0
110.3
9516 KALOI
66.000*
7
95161 1
11.000
7
1
7.8
5.0
155.9
9530 ISLAMKOT
66.000*
7
95301 1
11.000
7
1
2.9
2.5
117.8
9536 JAMRAOHD
66.000*
7
95361 1
11.000
7
1
3.8
2.5
150.8
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Under HESCO:
1. Construction of 132KV SDT Transmission Line from New Jamshoro (9400) to
132KV Grid Station Hala Road (9090) with Greeley Conductor (Express circuit).
2. Second Circuit from 132KV T.M Khan Grid Station (9220) to 132KV New Matli
Grid Station (9471) with Greeley Conductor.
3. Addition of another 1x10/13 MVA Power Transformers at 132Kv Grid Station
Digri (9479).
4. Installation of 4.8 MVAR Capacitor Bank instead of 1.2 MVAR at T-1 of 132KV
Grid Station Badin (9485) to boost the voltage for other connected Grid Stations.
5. Augmentation of T-1 Power Transformer with 40MVA at 132KV Grid Station
NTPS (9160), Hyderabad.
504760-01-A4
45
Disco Transmission Expansion Plan
National Power System Expansion Plan
6. Addition of 3rd 40 MVA Power Transformer, at 132KV Grid Station Latifabad
(9180), (after addition of this, all Power Transformers will be 40MVA).
7. Augmentation of 66KV Grid Station Kaloi (9516) with 10/13 MVA Power
Transformer.
8. Addition of 3rd 20/26 MVA Power Transformer Bay at 132KV Grid Station
Phuelleli (9150).
9. Addition of second 20/26 MVA Power Transformer Bay at 132KV Grid Station
Ghanghra Mori (9095).
10. Addition of second 10/13 MVA Power Transformer Bay at 132KV Grid Station
Noukot (9501).
11. Installation of Capacitor Bank (24 MVAR) at 132Kv Grid Station Noukot (9501).
12. Augmentation of Power Transformer at Islamkot Grid Station (9530) with 5 MVA
Transformer.
13. Installation of 3rd Power Transformer Bay with 20/26 MVA at 220/132 KV Grid
Station Hala Road (9090), or construct another Grid Station in the vicinity of said
Grid Station for shifting of load.
14. Augmentation of 2xPower Transformers with 40 MVA at 132 KV Grid Station
Qasimabad-I (9410).
15. Addition of second Power Transformer of 10/13 MVA at 132 KV Grid Station
Matiari (9455).
16. Augmentation of Power Transformer with 40 MVA at 132KV Mirpur Khas Grid
Station (9130).
17. Augmentation of 66KV Grid Station Jamro Head with 5 MVA Power Transformer
(9536).
18. Augmentation of both 10/13 MVA Power Transformers with 20/26 MVA at 132 KV
Grid Station (9420) Old Jamshoro.
504760-01-A4
46
Disco Transmission Expansion Plan
National Power System Expansion Plan
Under SEPCO:
1. Conversion of 66KV Grid Station Qamber (8251) with 2x20/26 MVA Power
Transformers & installation of 2.4 MVAR capacitor Banks.
2. Conversion of 66KV Grid Station Warah (8252) with 1x20/26 MVA Power
Transformer & installation of 6.0 MVAR capacitor Banks.
3. Conversion of 66KV Grid Station Dokri (8459) with 2x10/13 MVA Power
Transformers & installation of 3.0 MVAR capacitor Banks.
4. Conversion of 66KV Grid Station Radhan (8265) with 1x20/26 MVA Power
Transformer & installation of 4.8 MVAR capacitor Banks.
5. Addition of 1x20/26 MVA Power Transformer at 132KV Grid Station Mehar
(8260).
6. Construction of new 132 KV SDT Transmission Line from Qamber Grid Station
(8251) to Shahdadkot Grid Station (8485) with Lynx Conductor.
7. Augmentation of one Power Transformer at 132KV Grid Station Ratodero (8240).
8. Conversion of 66KV Grid Station Rasulabad (8341) with 2x10/13 MVA Power
Transformers & installation of one 132/66Kv Power Transformer (37.5 MVA) for
66KV Grid Station Thari Mir Wah (8345).
9. Installation of Capacitor Banks of 12 MVAR at 66KV Grid Station Nara-I (8310)
(Grid Station Side).
10. Installation of Capacitor Banks of 4.8 MVAR at 66KV Grid Station Nara-I (8310)
for both Power Transformers.
11. Installation of Capacitor Banks 3.6 MVAR at T-1 & 2.4 MVAR at T-2 of 66KV Grid
Station Nara-II (8320) Grid Station.
12. Augmentation of both Power Transformers of new 220/132KV Grid Station
Shikarpur (8219) with 20/26 MVA Power Transformers or construct another Grid
Station in the vicinity of said Grid Station for shifting of load.
13. Augmentation of T-2 Power Transformer of 132KV Grid Station Pano Akil (8080)
with 20/26 MVA.
504760-01-A4
47
Disco Transmission Expansion Plan
National Power System Expansion Plan
14. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station
Karmpur (8210).
15. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station
Khanpur Mehar (8050).
16. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station Thull
(8200).
17. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station
Khandkot (8190).
18. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station Bhan
Saeedabad (8175).
19. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station Johi
(8172).
20. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station
Rehmani Nagar (8275).
21. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station
K.P.N Shah (8270).
22. Augmentation of T-2 Power Transformer with 20/26 MVA at 132KV Grid Station
Moro (8160).
23. Addition of 3rd Power Transformer Bay with 20/26 MVA at 132 KV Grid Station
Kandario (8140).
24. Addition of 3rd Power Transformer Bay with 40 MVA at 132 KV Grid Station
Khairpur (8100).
25. Augmentation of Power Transformer with 20/26 MVA at 132KV Grid Station Kot
Diji (8110).
26. Construction of 2nd circuit from Dadu New (8170) to Dadu Old Grid Station
(8280) with Greeley Conductor.
27. Construction of 132KV D/C Transmission Line from New Rohri (8089) to Sukkur
Site (8237) Grid Station with Greeley Conductor.
504760-01-A4
48
Disco Transmission Expansion Plan
National Power System Expansion Plan
28. 132KV SDT Transmission Line feed for Qambar (8251) Grid Station with Lynx
Conductor.
29. 132KV SDT Transmission Line feed for Warah (8252) Grid Station with Lynx
Conductor.
30. 132KV SDT Transmission Line feed for Dokri (8459) Grid Station with Lynx
Conductor.
31. 132KV SDT Transmission Line feed for Radhan (8265) Grid Station with Lynx
Conductor.
32. 132KV D/C Transmission Line feed for Rasoolabad (8341) Grid Station with Lynx
Conductor.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
Two severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 228
: OPEN LINE FROM BUS 9471 [MATLI NEW
132.00] TO BUS 9483 [TALHAR
132.00] CKT 1
SINGLE 230
: OPEN LINE FROM BUS 9483 [TALHAR
132.00] TO BUS 9485 [BADIN
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
Many voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
BASE CASE
<-------- B U S -------->
8320 NARA C-2
66.000
0.88993
0.88993
1.10000
0.90000
SINGLE 25
8230 ARIAN RD
132.00
0.84769
1.01433
1.10000
0.90000
SINGLE 25
8231 SUKERCTY
132.00
0.84277
1.01057
1.10000
0.90000
SINGLE 25
8237 SUKURSTE
132.00
0.83388
1.02157
1.10000
0.90000
SINGLE 37
8345 THARI MIRWAH66.000
0.88777
0.94991
1.10000
0.90000
504760-01-A4
49
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 44
8310 NARA C-1
66.000
0.89386
0.93057
1.10000
0.90000
SINGLE 44
8360 PAD IDAN
66.000
0.87555
0.95706
1.10000
0.90000
SINGLE 46
8142 NEW JATOI
132.00
0.86846
0.99186
1.10000
0.90000
SINGLE 46
8160 MORO
132.00
0.85137
0.99578
1.10000
0.90000
SINGLE 46
8310 NARA C-1
66.000
0.88601
0.93057
1.10000
0.90000
SINGLE 49
8174 SEHWAN
132.00
0.87000
0.99903
1.10000
0.90000
SINGLE 49
8175 BHAN SAEDABD132.00
0.84631
1.01711
1.10000
0.90000
SINGLE 49
8177 PARCO
132.00
0.85191
1.01161
1.10000
0.90000
SINGLE 53
9002 DAULTPUR
132.00
0.89173
1.00676
1.10000
0.90000
SINGLE 70
8200 THULL
132.00
0.87464
0.97992
1.10000
0.90000
SINGLE 70
8205 JACOBABAD
132.00
0.86461
0.98773
1.10000
0.90000
SINGLE 70
8215 JACOBABAD-II132.00
0.86414
0.98557
1.10000
0.90000
SINGLE 76
8200 THULL
132.00
0.84044
0.97992
1.10000
0.90000
SINGLE 76
8205 JACOBABAD
132.00
0.82479
0.98773
1.10000
0.90000
SINGLE 76
8215 JACOBABAD-II132.00
0.82483
0.98557
1.10000
0.90000
SINGLE 76
8221 HAMAYOON
132.00
0.82010
1.00481
1.10000
0.90000
SINGLE 86
8241 MIROKHAN
132.00
0.84813
0.98358
1.10000
0.90000
SINGLE 86
8251 QAMBER
132.00
0.89374
0.96580
1.10000
0.90000
SINGLE 86
8252 WARAH
132.00
0.88359
0.95755
1.10000
0.90000
SINGLE 86
8485 SHADADKT
132.00
0.85183
0.97388
1.10000
0.90000
SINGLE 86
8490 SHADADKT
66.000
0.86566
1.00007
1.10000
0.90000
SINGLE 86
8500 GHARI KHAIRO66.000
0.81482
0.96248
1.10000
0.90000
SINGLE 90
8485 SHADADKT
132.00
0.88583
0.97388
1.10000
0.90000
SINGLE 90
8500 GHARI KHAIRO66.000
0.85678
0.96248
1.10000
0.90000
SINGLE 96
8251 QAMBER
132.00
0.89513
0.96580
1.10000
0.90000
SINGLE 96
8252 WARAH
132.00
0.88502
0.95755
1.10000
0.90000
SINGLE 127
9025 JAM SAHIB
132.00
0.89962
0.96326
1.10000
0.90000
SINGLE 127
9030 SHAHPURC
132.00
0.88399
0.97736
1.10000
0.90000
SINGLE 150
9080 TANDOADM
132.00
0.89612
0.95408
1.10000
0.90000
SINGLE 165
9501 NOUKOT
132.00
0.89820
0.96762
1.10000
0.90000
SINGLE 165
9505 MITHI
132.00
0.88401
0.95535
1.10000
0.90000
SINGLE 169
9494 SAMARO
66.000
0.81300
1.01682
1.10000
0.90000
SINGLE 169
9506 PITHORO
66.000
0.80043
1.00732
1.10000
0.90000
SINGLE 169
9510 NABISRRD
66.000
0.84541
0.99637
1.10000
0.90000
SINGLE 169
9595 KUNRI
66.000
0.82019
0.99950
1.10000
0.90000
SINGLE 171
9485 BADIN
132.00
0.88617
0.97295
1.10000
0.90000
SINGLE 171
9486 BADIN
66.000
0.83128
1.02546
1.10000
0.90000
SINGLE 171
9487 T/T.BAGO
66.000
0.74202
1.00370
1.10000
0.90000
SINGLE 171
9488 TANDO BAGO
66.000
0.73806
1.00094
1.10000
0.90000
SINGLE 171
9489 GOLARCHI
132.00
0.88021
0.96776
1.10000
0.90000
SINGLE 171
9490 KADHAN
66.000
0.82108
1.02112
1.10000
0.90000
SINGLE 171
9494 SAMARO
66.000
0.88672
1.01682
1.10000
0.90000
SINGLE 171
9501 NOUKOT
132.00
0.45901
0.96762
1.10000
0.90000
SINGLE 171
9505 MITHI
132.00
0.43318
0.95535
1.10000
0.90000
SINGLE 171
9506 PITHORO
66.000
0.87547
1.00732
1.10000
0.90000
SINGLE 171
9507 MITHI
66.000
0.44038
1.00206
1.10000
0.90000
SINGLE 171
9510 NABISRRD
66.000
0.73315
0.99637
1.10000
0.90000
SINGLE 171
9514 NOUKOT
66.000
0.55794
1.00791
1.10000
0.90000
SINGLE 171
9515 T-KALOI
66.000
0.58794
0.98849
1.10000
0.90000
SINGLE 171
9516 KALOI
66.000
0.57114
0.97979
1.10000
0.90000
SINGLE 171
9517 T/TJM
66.000
0.54633
1.00165
1.10000
0.90000
SINGLE 171
9518 PANGIRO
66.000
0.59689
0.98837
1.10000
0.90000
SINGLE 171
9519 TJM
66.000
0.54576
1.00131
1.10000
0.90000
SINGLE 171
9526 DIPLO
66.000
0.42390
0.99292
1.10000
0.90000
SINGLE 171
9530 ISLAMKOT
66.000
0.41245
0.98864
1.10000
0.90000
504760-01-A4
50
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 171
9532 NAGRPRKR
66.000
0.40538
0.98686
1.10000
0.90000
SINGLE 171
9595 KUNRI
66.000
0.80057
0.99950
1.10000
0.90000
SINGLE 231
9486 BADIN
66.000
0.83936
1.02546
1.10000
0.90000
SINGLE 231
9487 T/T.BAGO
66.000
0.84354
1.00370
1.10000
0.90000
SINGLE 231
9488 TANDO BAGO
66.000
0.84017
1.00094
1.10000
0.90000
SINGLE 231
9490 KADHAN
66.000
0.82952
1.02112
1.10000
0.90000
SINGLE 231
9515 T-KALOI
66.000
0.89254
0.98849
1.10000
0.90000
SINGLE 231
9516 KALOI
66.000
0.88258
0.97979
1.10000
0.90000
SINGLE 231
9518 PANGIRO
66.000
0.88764
0.98837
1.10000
0.90000
SINGLE 233
9487 T/T.BAGO
66.000
0.87556
1.00370
1.10000
0.90000
SINGLE 233
9488 TANDO BAGO
66.000
0.87233
1.00094
1.10000
0.90000
SINGLE 238
9510 NABISRRD
66.000
0.89542
0.99637
1.10000
0.90000
SINGLE 238
9595 KUNRI
66.000
0.87876
0.99950
1.10000
0.90000
SINGLE 242
9488 TANDO BAGO
66.000
0.89983
1.00094
1.10000
0.90000
SINGLE 242
9514 NOUKOT
66.000
0.83004
1.00791
1.10000
0.90000
SINGLE 242
9515 T-KALOI
66.000
0.83172
0.98849
1.10000
0.90000
SINGLE 242
9516 KALOI
66.000
0.82056
0.97979
1.10000
0.90000
SINGLE 242
9517 T/TJM
66.000
0.82186
1.00165
1.10000
0.90000
SINGLE 242
9518 PANGIRO
66.000
0.83529
0.98837
1.10000
0.90000
SINGLE 242
9519 TJM
66.000
0.82143
1.00131
1.10000
0.90000
SINGLE 248
9515 T-KALOI
66.000
0.83736
0.98849
1.10000
0.90000
SINGLE 248
9516 KALOI
66.000
0.82635
0.97979
1.10000
0.90000
SINGLE 248
9518 PANGIRO
66.000
0.84069
0.98837
1.10000
0.90000
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
Line/Transformer Overloads:
Many line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
8090 ROHRI
132.00
8237*SUKURSTE
132.00 1
BASE CASE
112.0
122.0
106.7
8089 ROHRI-NW
132.00
8090*ROHRI
132.00 1
SINGLE 9
112.0
116.7
100.5
8089 ROHRI-NW
132.00
8090*ROHRI
132.00 2
SINGLE 9
112.0
116.7
100.5
8029 LIBERTY
132.00
8040*MIRPUR M
132.00 1
SINGLE 10
112.0
114.6
100.4
8089 ROHRI-NW
132.00
8090*ROHRI
132.00 2
SINGLE 17
112.0
195.0
167.4
8089 ROHRI-NW
132.00
8090*ROHRI
132.00 1
SINGLE 18
112.0
195.0
167.4
8220 SHIKARPR
132.00
8230*ARIAN RD
132.00 1
SINGLE 25
112.0
154.8
163.1
8100*KHAIRPUR
132.00
8101 KANDRA-P
132.00 2
SINGLE 28
112.0
120.7
105.5
8100*KHAIRPUR
132.00
8101 KANDRA-P
132.00 1
SINGLE 29
112.0
120.7
105.5
8270*KPN SHAH
132.00
8280 DADU OLD
132.00 1
SINGLE 50
112.0
109.5
104.2
8170 DADU NEW
132.00
8280*DADU OLD
132.00 2
SINGLE 51
112.0
120.4
104.9
8170 DADU NEW
132.00
8280*DADU OLD
132.00 1
SINGLE 52
112.0
120.4
104.9
8170 DADU NEW
132.00
8260*MEHAR
132.00 1
SINGLE 106
112.0
116.3
111.0
9090 HALAROAD
132.00
9455*MATIARI
132.00 1
SINGLE 121
112.0
119.1
104.8
9090 HALAROAD
132.00
9455*MATIARI
132.00 1
SINGLE 127
112.0
118.9
105.3
9060*HALA
132.00
9455 MATIARI
132.00 1
SINGLE 139
112.0
119.6
112.3
9090 HALAROAD
132.00
9455*MATIARI
132.00 1
SINGLE 139
112.0
141.3
125.5
504760-01-A4
51
%
Disco Transmission Expansion Plan
National Power System Expansion Plan
9060*HALA
132.00 1
SINGLE 140
112.0
113.7
107.3
9400 JAMSHORO NEW132.00
132.00
9090 HALAROAD
9410*QASIMABAD-I 132.00 1
SINGLE 148
112.0
155.0
139.9
9060*HALA
132.00
9090 HALAROAD
132.00 1
SINGLE 150
112.0
119.6
114.3
9130*MIRPURKHAS
132.00
9131 M.KHS.NW
132.00 2
SINGLE 163
112.0
148.4
128.9
9130*MIRPURKHAS
132.00
9131 M.KHS.NW
132.00 1
SINGLE 164
112.0
148.4
128.9
9501*NOUKOT
132.00
9514 NOUKOT
66.000 1
SINGLE 169
40.0
40.9
102.4
9140*SAMARO
132.00
9494 SAMARO
66.000 1
SINGLE 171
40.0
54.8
137.0
9485*BADIN
132.00
9486 BADIN
66.000 1
SINGLE 171
37.5
40.6
108.2
9486 BADIN
66.000
9487*T/T.BAGO
66.000 1
SINGLE 171
39.0
30.3
104.8
9494 SAMARO
66.000
9595*KUNRI
66.000 1
SINGLE 171
39.0
40.4
129.4
9510*NABISRRD
66.000
9595 KUNRI
66.000 1
SINGLE 171
39.0
29.0
101.4
9095*GHANGHRA MOR132.00
9159 HYD-TMRD
132.00 1
SINGLE 173
112.0
121.3
103.3
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 187
112.0
117.5
100.1
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 188
112.0
125.5
106.9
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 189
112.0
125.5
106.9
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 200
112.0
121.5
103.4
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 206
112.0
118.3
100.8
9090 HALAROAD
132.00
9410*QASIMABAD-I 132.00 1
SINGLE 209
112.0
154.3
137.2
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 214
112.0
130.1
110.8
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 216
112.0
117.5
100.0
9200 KOTRI
132.00
9230*JHAMPIR
132.00 1
SINGLE 217
112.0
117.5
100.0
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
To overcome these (N-1) violations, more system additions were considered as follows.
Under HESCO:
1. Second Circuit from 132KV Matli New Grid Station (9471) to Talhar Grid Station
(9483) with Lynx Conductor.
2. Second Circuit from 132KV Talhar Grid Station (9483) to Badin Grid Station
(9485) with Lynx Conductor.
3. Reconductoring of 132KV New Jamshoro (9400) – Qasimabad (9410) – Hala
Road (9090) Circuit with Greeley Conductor.
4. Reconductoring both circuits of 132KV New Jamshoro (9400) – Old Jamshoro
(9420) with Greeley Conductor.
5. Reconductroing of Kotri (9200) to Jhimpir Circuit (9230) with Greeley Conductor.
6. 3rd circuit from New Mirpur Khas Grid Station (9131) to Mirpur Khas Grid Station
(9130) with Lynx Conductor.
7. Second circuit stringing from Samaro (9140) to Noukot (9501) with Lynx
Conductor.
504760-01-A4
52
Disco Transmission Expansion Plan
National Power System Expansion Plan
8. Reconductoring of 132KV Hala Road (9090) – Matiari (9455) – Hala (9060)
Circuit wit Greeley conductor.
9. Construction of new SDT 132KV Transmission Line from Hala Road (9090) –
Hala (9060) – Sakrand (9005) with Rail Conductor.
10. Reconductoring of 132KV T.M Khan Road (9159) – Ghanghra Mori (9095) –
Phuelleli (9150) Circuit with Greely Conductor.
11. Installation of 2nd 132/66KV Power Transformer at 132KV Noukot Grid Station
(9501).
12. Increase Capacitor from 1.2 to 3.6 MVAR of both Transformers of 132KV Grid
Station Sehwan (8174).
13. Add capacitor 2.4 MVAR at 66KV Grid Station Khipro (9546).
Under SEPCO:
1. Reconductoring of existing circuit from Dadu New (8170) to Dadu Old (8280) with
Greeley conductor & construct 2nd circuit with Greeley conductor.
2. Construction of new 132KV SDT Transmission Line from Dadu Old (8280) to
KPN Shah (8270) with Rail Conductor.
3. Construction of new 132KV SDT Transmission Line from Dadu New – (8170)
Mehar (8260) – Larkana-III (8256) Grid Station with Rail Conductor.
4. Construction of new SDT 132KV Transmission Line from Liberty (8029) – Mirpur
Mathelo (8040) – Ghotki (8070) with Greely Conductor.
5. Construction of D/C 132KV Transmission Line from New Rohri (8089) to Khairpur
Grid Station (8100) with Rail Conductor, and D/C Transmission Line from New
Rohri (8089) to Gamabt Grid Station (8130), instead of three circuits with Lynx
Conductor.
6. Increase capacitor from 4.2 to 6.0 MVAR at T-2 of 132KV Grid Station Noushro
Feroze (8150).
7. Add Capacitor 6.0 MVAR at T-1 of 132KV Grid Station New Jatoi (8142).
504760-01-A4
53
Disco Transmission Expansion Plan
National Power System Expansion Plan
8. Add Capacitor 6.0 MVAR at T-2 & increase capacitor from 4.8 to 7.2 MVAR at T1 of 132KV Grid Station Moro (8160).
9. Increase Capacitor at T-1 from 4.8 to 7.2 MVAR of 132KV Grid Station Bhan
Saeedabad (8175).
10. Increase Capacitor at T-1 from 4.8 to 6.02 MVAR & add 6.0 MVAR at T-2 of
132KV Grid Station Thull (8200).
11. Increase Capacitor up-to 4.8 MVAR at 132KV Grid Station Hamyoon (8221).
12. Increase Capacitor up-to 7.2 MVAR at T-1 & 6.0 at T-2 of 132KV Grid Station
Jacobabad-I (8205).
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed HESCO and SEPCO base
case for Year-2015 with the above mentioned system reinforcements are given in
Appendix-3 (spread over 11 Sheets).
7.1.8.
“QESCO” Distribution System for Year-2015
The Year-2015 base case was studied based on the planning criteria described in
Section 12.5. The total load of QESCO by Year-2015 is 1,738 MW. The load flow single
line diagrams of the full QESCO system are shown in Appendix-2 (spread over 4
Sheets) along with the system additions from Year-2010 to Year-2015.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], many voltage problems were recorded
within the QESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
9600 SIBBI
132.00
V(PU)
V(KV)
8 1.0680 140.98
BUS# X-- NAME --X BASKV AREA
96002
11.000
V(PU)
V(KV)
8 1.0838 11.922
BUSES WITH VOLTAGE LESS THAN 0.9500:
504760-01-A4
54
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
8445 ROJJAMAL
132.00
8 0.9477 125.09
8510 USTAMOHD
132.00
8 0.9407 124.18
8515 JHAL MGS
132.00
8 0.9317 122.98
9652 MARROW
33.000
8 0.9438 31.145
9653 SPLINGI
33.000
8 0.9387 30.979
9700 Q.S.MAND
132.00
8 0.8967 118.37
9701 HABIB-P
132.00
8 0.9030 119.19
9710 PISHIN
132.00
8 0.7790 102.83
9712 KUCLAK
132.00
8 0.8598 113.49
9713 HURAMZAI
132.00
8 0.6428 84.851
9715 YARU
132.00
8 0.7730 102.03
9716 DAB KHANOZAI132.00
8 0.7708 101.75
9717 ALIZAI
132.00
8 0.6244 82.418
9720 GULISTAN
132.00
8 0.6090 80.382
9725 HABIBZAI
132.00
8 0.5976 78.889
9730 Q.ABDULA
132.00
8 0.5932 78.301
9735 CHAMAN
132.00
8 0.5587 73.751
9740 KHANOZAI
132.00
8 0.7972 105.23
9741 ZIARAT
132.00
8 0.7768 102.54
9750 MUS.BAGH
132.00
8 0.8182 108.00
9755 K. MATHERZAI132.00
8 0.8043 106.17
9760 Q.S.ULLA
132.00
8 0.8932 117.90
9765 MUSAFRPR
132.00
8 0.8253 108.93
9768 G.H.ZAI
132.00
8 0.8446 111.49
9770 ZHOB
132.00
8 0.8066 106.47
9810 NOSHKI
132.00
8 0.9268 122.33
9813 MAL
132.00
8 0.9244 122.02
9840 SURAB
132.00
8 0.9477 125.10
9845 ZEHRI
132.00
8 0.9448 124.72
9850 GIDDER
132.00
8 0.9327 123.11
9855 KHARAN
132.00
8 0.8932 117.90
9857 DLBINDIN
132.00
8 0.9268 122.34
9858 CHAGAI
132.00
8 0.9282 122.52
9859 BASIMA
132.00
8 0.9218 121.68
9864 BAGHBANA
132.00
8 0.9498 125.38
9865 NAL
132.00
8 0.9468 124.98
80040 PANJGUR
132.00
8 0.8720 115.10
80041 T-1
11.000
8 0.7508
84401
11.000
8 0.9361 10.297
96802
11.000
8 0.9413 10.355
96901
11.000
8 0.9243 10.167
96902
11.000
8 0.9196 10.115
97001
11.000
8 0.8666
9.533
97002
11.000
8 0.9449 10.394
97101
11.000
8 0.8486
9.335
97102
11.000
8 0.8486
97104
11.000
8 0.8486
9.335
97121
11.000
8 0.9150 10.065
97131
11.000
8 0.6284
6.913
97151
11.000
8 0.8976
9.874
97152
11.000
8 0.8144
8.959
97161 T-1
11.000
8 0.8816
9.698
97171 T-1
11.000
8 0.4554
5.009
97201
11.000
8 0.5465
6.011
97202
11.000
8 0.5239
5.763
97203
11.000
8 0.5222
5.744
97251 T-1
11.000
8 0.5380
5.918
97301
11.000
8 0.4664
5.130
97302
11.000
8 0.4664
5.130
97303
11.000
8 0.5214
5.735
97351
11.000
8 0.4782
5.260
97352
11.000
8 0.5037
5.541
97401
11.000
8 0.9009
9.910
97402
11.000
8 0.9009
9.910
97411 T-1
11.000
8 0.8852
9.737
97501
11.000
8 0.9435 10.379
97502
33.000
8 0.9068 29.925
97503 T-3
11.000
8 0.9240 10.164
97551 T-1
11.000
8 0.9109 10.020
97601
11.000
8 0.9224 10.146
97602
11.000
8 0.9170 10.087
97603 T-3
11.000
8 0.8778
97651
11.000
8 0.9250 10.175
97652 T-2
11.000
8 0.9480 10.428
97681
11.000
8 0.9106 10.017
97691 T-1
11.000
8 0.9419 10.361
97701
11.000
8 0.8525
9.377
97702
11.000
8 0.9223 10.145
97871 T-1
11.000
8 0.9223 10.145
98001
11.000
8 0.9310 10.241
98002
11.000
8 0.9310 10.241
98101
11.000
8 0.9013
98102
11.000
8 0.9432 10.375
98131 T-1
11.000
8 0.9133 10.046
98201
11.000
8 0.9465 10.411
98301
11.000
8 0.9129 10.042
98302
11.000
8 0.9129 10.042
98303 T-3
11.000
8 0.9129 10.042
98403
11.000
8 0.9144 10.059
98501
11.000
8 0.9045
9.950
98502
11.000
8 0.9470 10.417
98551
11.000
8 0.8666
9.532
98553
11.000
8 0.9453 10.398
98581 T-1
11.000
8 0.9248 10.173
98591
11.000
8 0.9172 10.089
98641
11.000
8 0.9487 10.436
98651
11.000
8 0.9310 10.241
98901
11.000
8 0.9034
8.259
9.335
9.655
9.914
9.938
--------------------------------------------------------------------------------
504760-01-A4
55
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
645 MASTUNG
220.00*
15
9780 MASTUNG
132.00
8
1
409.6
320.0
128.0
970 QUETTA
220.00*
15
9660 QUETTAIN
132.00
8
1
661.5
480.0
137.8
9610 BHAG
132.00*
8
96101
11.000
8
1
20.7
13.0
159.0
9630 LORALAI
132.00*
8
96301
11.000
8
1
40.0
26.0
153.9
9630 LORALAI
132.00*
8
96302
11.000
8
1
20.0
13.0
153.9
9630 LORALAI
132.00*
8
96303
33.000
8
1
12.8
7.6
167.8
9650 MACH
132.00*
8
9651 MACH-33
33.000
8
1
22.0
13.0
169.0
9660 QUETTAIN
132.00
8
9690 MARIABAD
132.00*
8
1
130.4
112.0
116.4
9660 QUETTAIN
132.00
8
9690 MARIABAD
132.00*
8
2
130.4
112.0
116.4
9660 QUETTAIN
132.00
8
9700 Q.S.MAND
132.00*
8
1
200.7
112.0
179.2
9670 SARYAB
132.00*
8
96701
11.000
8
1
39.5
26.0
152.1
9670 SARYAB
132.00*
8
96702
11.000
8
1
63.8
40.0
159.5
9680 Q.CITY
132.00*
8
96801
11.000
8
1
45.6
40.0
114.0
9680 Q.CITY
132.00*
8
96802
11.000
8
1
29.6
26.0
114.0
9690 MARIABAD
132.00
8
132.00*
8
1
170.9
112.0
152.6
9690 MARIABAD
132.00*
8
96901
11.000
8
1
32.0
26.0
123.3
9690 MARIABAD
132.00*
8
96902
11.000
8
1
15.6
13.0
119.6
9700 Q.S.MAND
132.00
8
9712 KUCLAK
132.00*
8
1
168.9
112.0
150.8
9700 Q.S.MAND
132.00
8
9715 YARU
132.00*
8
1
225.6
112.0
201.4
9710 PISHIN
132.00*
8
9712 KUCLAK
132.00
8
1
130.8
112.0
116.8
9710 PISHIN
132.00
8
9720 GULISTAN
132.00*
8
1
169.9
112.0
151.7
9712 KUCLAK
132.00*
8
97121
11.000
8
1
33.2
26.0
127.7
9717 ALIZAI
132.00*
8
97171 T-1
11.000
8
1
45.1
26.0
173.6
9730 Q.ABDULA
132.00*
8
97301
11.000
8
1
26.5
26.0
101.8
9730 Q.ABDULA
132.00*
8
97302
11.000
8
1
26.5
26.0
101.8
9730 Q.ABDULA
132.00*
8
97303
11.000
8
1
28.5
26.0
109.8
9768 G.H.ZAI
132.00*
8
97681
11.000
8
1
14.3
13.0
109.7
9770 ZHOB
132.00*
8
97701
11.000
8
1
15.2
13.0
117.1
9780 MASTUNG
132.00
8
132.00*
8
1
124.2
112.0
110.9
9787 KANAK
132.00*
8
97871 T-1
11.000
8
1
36.9
26.0
142.1
9860 KHUZDAR
132.00*
8
98601
11.000
8
1
14.3
13.0
110.3
9860 KHUZDAR
132.00*
8
98603
11.000
8
1
34.3
26.0
132.1
80000 MAND
132.00*
8
80001 T-1
11.000
8
1
10.7
6.3
169.4
80010 TUMP
132.00*
8
80011 T-1
11.000
8
1
9.2
6.3
146.3
80040 PANJGUR
132.00*
8
80041 T-1
11.000
8
1
19.5
13.0
150.0
9700 Q.S.MAND
9787 KANAK
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
504760-01-A4
56
Disco Transmission Expansion Plan
National Power System Expansion Plan
A)
Augmentation/Additional Power Transformers:
1. 132 KV G/Haiderzai Grid Station(9768), augmentation of 13 with 26 MVA
2. 132 KV Alizai Grid Station (9717), 26 MVA additional T/F
3. 132 KV Q/Abdullah G/S (9730), augmentation of 3 x 26 MVA with 3 x 40 MVA
4. 132 KV Sariab G/S (9670), augmentation of 26 MVA with 40 MVA & an additional
40 MVA T/F
5. 132 KV Quetta City G/S (9680), augmentation of 26 MVA with 40 MVA T/F
6. 132 KV Kuchlack G/S (9712)), augmentation of 26 MVA with 40 MVA T/F
7. 132 KV Loralai G/S(9630), augmentation of 13 MVA with 40 MVA & 26 MVA with
40 MVA T/F
8. 132 KV Mach G/S (9650), augmentation of 6.5 MVA with 13 MVA & 15 MAV with
18 MVA T/F(132/33 KV T/F).
9. 132 KV Bhag G/S (9610), augmentation of 13 MVA with 26 MVA T/F.
10. 132 KV Kanak G/S (9787), additional 26 MVA T/F.
11. 132 KV Khuzdar G/S (9860), augmentation of 13 with 26 & 26 with 40 MVA T/F.
12. 132 KV Zhob G/S (9770), augmentation of 13 MVA with 26 MVA T/F.
B)
Reconductoring of branches:
1. Q.S.Manda (9700) to Yaru (9715) – replacement of Lynx with Rail conductor.
2. Q.S.Manda (9700) to Kuchlack (9712) – replacement of Lynx with Rail conductor.
3. Additional circuit from 132 KV Mastung (9780) to 132 KV Kanak (9787) G/S
(Lynx).
4. Quetta Mariabad – Q.S.Manda replacement of Lynx with Greeley conductor
C)
132 KV Fixed Shunt:
1. 24 MVAR at 132 KV Gulistan G/S (9720).
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D)
11 KV Fixed Shunt:
No. Grid Station
E)
Capacitor Bank
1
Dab Khanozai G/S (97161), T/F-1
7.2 MVAR
2
Musafirpur G/S (97651), T/F-1
1.2 MVAR
3
Zhob G/S (97171), T/F-1
2.4 MVAR
4
G/Haiderzai G/S (97681), T/F-1
2.4 MVAR
5
Alizai G/S (97171), T/F-1
7.2 MVAR & T/F-2 = 7.2 MVAR
6
Q/Abdullah G/S (97301,97302,97303)
T/F-1 = 2.8 MVAR, T/F-2 = 2.8 MVAR
T/F-3 = 2.8 MVAR
7
Q.S.Manda G/S,(97001)
T/F-1 = - 3.6 MVAR
8
Khuzdar G/S,(98601)
T/F-1 = 2.4 MVAR
QESCO-Mekran:
1. Augmentation of 6.3 with 13 MVA at Mand Grid Station
2.
Augmentation of 6.3 with 13 MVA at Tump Grid Station
3. Augmentation of 13 with 26 MVA at Panjgur Grid Station
4. Construction of New Grid Station 132 KV Ormara along with allied Transmission
Line
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
Ten severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 10
: OPEN LINE FROM BUS 8440 [D.M.JMLI
132.00] TO BUS 8445 [ROJJAMAL
132.00] CKT 1
SINGLE 35
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9700 [Q.S.MAND
132.00] CKT 1
SINGLE 47
: OPEN LINE FROM BUS 9700 [Q.S.MAND
132.00] TO BUS 9715 [YARU
132.00] CKT 1
SINGLE 52
: OPEN LINE FROM BUS 9710 [PISHIN
132.00] TO BUS 9720 [GULISTAN
132.00] CKT 1
SINGLE 56
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9715 [YARU
132.00] CKT 1
SINGLE 58
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9730 [Q.ABDULA
132.00] CKT 1
SINGLE 78
: OPEN LINE FROM BUS 9787 [KANAK
132.00] TO BUS 9790 [PANJPAI
132.00] CKT 1
SINGLE 79
: OPEN LINE FROM BUS 9790 [PANJPAI
132.00] TO BUS 9800 [KIRDGHEB
132.00] CKT 1
SINGLE 80
: OPEN LINE FROM BUS 9800 [KIRDGHEB
132.00] TO BUS 9810 [NOSHKI
132.00] CKT 1
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SINGLE 92
: OPEN LINE FROM BUS 9840 [SURAB
132.00] TO BUS 9850 [GIDDER
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
Many voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 13
<-------- B U S -------->
8203 HAIRDIN
132.00
1.10680
1.02427
1.10000
0.90000
SINGLE 13
8440 D.M.JMLI
132.00
1.10626
0.97997
1.10000
0.90000
SINGLE 13
8444 MANJOSHORI
132.00
1.10505
0.97789
1.10000
0.90000
SINGLE 13
8455 T-RJAMAL
66.000
1.10186
0.97116
1.10000
0.90000
SINGLE 26
9765 MUSAFRPR
132.00
0.89808
0.96549
1.10000
0.90000
SINGLE 26
9770 ZHOB
132.00
0.88494
0.95518
1.10000
0.90000
SINGLE 27
9765 MUSAFRPR
132.00
0.89808
0.96549
1.10000
0.90000
SINGLE 27
9770 ZHOB
132.00
0.88494
0.95518
1.10000
0.90000
SINGLE 46
9712 KUCLAK
132.00
0.89494
1.01053
1.10000
0.90000
SINGLE 46
9713 HURAMZAI
132.00
0.89870
0.97705
1.10000
0.90000
SINGLE 46
9717 ALIZAI
132.00
0.89076
0.97058
1.10000
0.90000
SINGLE 46
9720 GULISTAN
132.00
0.87626
0.96506
1.10000
0.90000
SINGLE 46
9725 HABIBZAI
132.00
0.87329
0.96258
1.10000
0.90000
SINGLE 46
9730 Q.ABDULA
132.00
0.87362
0.96262
1.10000
0.90000
SINGLE 46
9735 CHAMAN
132.00
0.85745
0.95080
1.10000
0.90000
SINGLE 46
9741 ZIARAT
132.00
0.89887
0.97128
1.10000
0.90000
SINGLE 46
9770 ZHOB
132.00
0.89043
0.95518
1.10000
0.90000
SINGLE 73
9855 KHARAN
132.00
0.87514
0.95683
1.10000
0.90000
SINGLE 73
9859 BASIMA
132.00
0.89717
0.98515
1.10000
0.90000
SINGLE 76
9855 KHARAN
132.00
0.88155
0.95683
1.10000
0.90000
SINGLE 95
9800 KIRDGHEB
132.00
0.89117
0.99673
1.10000
0.90000
SINGLE 95
9810 NOSHKI
132.00
0.78466
0.97228
1.10000
0.90000
SINGLE 95
9813 MAL
132.00
0.78098
0.97028
1.10000
0.90000
SINGLE 95
9855 KHARAN
132.00
0.57783
0.95683
1.10000
0.90000
SINGLE 95
9857 DLBINDIN
132.00
0.70708
0.98044
1.10000
0.90000
SINGLE 95
9858 CHAGAI
132.00
0.75177
0.97714
1.10000
0.90000
SINGLE 95
9859 BASIMA
132.00
0.57584
0.98515
1.10000
0.90000
SINGLE 96
9855 KHARAN
132.00
0.83426
0.95683
1.10000
0.90000
SINGLE 97
9800 KIRDGHEB
132.00
0.89293
0.99673
1.10000
0.90000
SINGLE 97
9810 NOSHKI
132.00
0.78740
0.97228
1.10000
0.90000
SINGLE 97
9813 MAL
132.00
0.78375
0.97028
1.10000
0.90000
SINGLE 97
9855 KHARAN
132.00
0.58037
0.95683
1.10000
0.90000
SINGLE 97
9857 DLBINDIN
132.00
0.71015
0.98044
1.10000
0.90000
SINGLE 97
9858 CHAGAI
132.00
0.75471
0.97714
1.10000
0.90000
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
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--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 17
112.0
116.9
101.5
%
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 18
112.0
116.9
101.5
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 21
112.0
115.4
100.1
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 22
112.0
115.4
100.1
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 23
112.0
115.6
100.3
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 26
112.0
126.2
110.0
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 27
112.0
126.2
110.0
9660 QUETTAIN
132.00
9670*SARYAB
132.00 2
SINGLE 31
112.0
113.8
100.6
9660 QUETTAIN
132.00
9670*SARYAB
132.00 1
SINGLE 32
112.0
113.8
100.6
9660*QUETTAIN
132.00
9690 MARIABAD
132.00 2
SINGLE 33
112.0
151.1
129.1
9660*QUETTAIN
132.00
9690 MARIABAD
132.00 1
SINGLE 34
112.0
151.1
129.1
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 41
202.0
220.9
107.6
9700*Q.S.MAND
132.00
9870 Q.S.MAND
66.000 1
SINGLE 41
75.0
79.0
105.3
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 42
112.0
136.5
118.7
9700 Q.S.MAND
132.00
9715*YARU
132.00 1
SINGLE 45
202.0
208.2
104.8
9710 PISHIN
132.00
9712*KUCLAK
132.00 1
SINGLE 45
112.0
138.3
123.6
9700 Q.S.MAND
132.00
9715*YARU
132.00 1
SINGLE 46
202.0
224.7
117.3
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 48
112.0
139.4
120.8
9700 Q.S.MAND
132.00
9715*YARU
132.00 1
SINGLE 49
202.0
210.8
106.4
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 65
112.0
116.2
101.1
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 66
112.0
116.2
101.1
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 68
112.0
117.8
102.5
9780 MASTUNG
132.00
9820*MANGOCHR
132.00 1
SINGLE 73
112.0
133.0
129.0
9780 MASTUNG
132.00
9787*KANAK
132.00 1
SINGLE 75
112.0
119.3
103.6
9780 MASTUNG
132.00
9781*K-KOCHA
132.00 1
SINGLE 76
112.0
135.0
125.5
9780*MASTUNG
132.00
9820 MANGOCHR
132.00 1
SINGLE 77
112.0
117.2
100.4
9787 KANAK
132.00
9790*PANJPAI
132.00 1
SINGLE 95
112.0
139.7
127.3
9790 PANJPAI
132.00
9800*KIRDGHEB
132.00 1
SINGLE 95
112.0
116.6
116.8
9787 KANAK
132.00
9790*PANJPAI
132.00 1
SINGLE 97
112.0
138.3
125.9
9790 PANJPAI
132.00
9800*KIRDGHEB
132.00 1
SINGLE 97
112.0
115.4
115.3
9690*MARIABAD
132.00
9700 Q.S.MAND
132.00 1
SINGLE 102
112.0
116.0
100.3
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
To overcome these (N-1) violations, more system additions were considered as follows.
A) 132/11 KV FIXED SHUNTS:
1. 132 KV Khanozai G/S (9740) – 36 MVAR
2. 132 KV Q.S.Manda G/S (9700) – 36 MVAR
3. 132 KV Jhal Magsi G/S (8515) – 2.4 MVAR
4. 132 KV Dab Khanozai G/S (97161) – 4.8 MVAR
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5. 132 KV Gulistan G/S (9720) – 24 MVAR
6. 132 KV Gidder G/S (9850) – 3.6 MVAR
B) 132 KV BRANCHES:
1. 2nd circuit from D.M.Jamali (8440) to Rojhan Jamali (8445)
2. Mall (9813) to Kharan (9855)
3. Kharan (9855) to Dalbandin (9857)
4. 2nd circuit from Panjpai (9790) to Kirdgab (9800)
5. 2nd circuit from Kirdgab (9800) to Noshki (9810)
6. Double Circuit from Quetta Industrial (9660) to Pishin (9710)
7. 2nd circuit from Q.S Manda (9700) to Yaru (9715)
8. Stringing of 2nd circuit from Huramzai (9713) to Yaru (9715)
9. 2nd circuit from Huramzai (9713) to Q/Abdullah (9730)
10. 2nd circuit from Rojhan Jamali (8445) to Usta Muhammad
11. 2nd Circuit from Kanak to Panjpai 25 Km with Greeley conductor
12. 2nd Circuit from Surab to Gidder 24 Km with Lynx conductor
C) RE-CONDUCTORING :
1. Replacement of Lynx with Greeley conductor
from Mastung (9780) to
Mangocher (9820)
2. Replacement of Lynx with Greeley conductor of 1st CKT from Mastung (9780) to
Kanak (9787)
3. Replacement of Lynx with Greeley conductor from Mastung (9780) to Kad Kucha
(9781)
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
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The updated load flow single line diagrams for developed QESCO base case for Year2015 with the above mentioned system reinforcements are given in Appendix-3 (spread
over 4 Sheets).
7.1.8
Year-2016 Study Base Cases
As mentioned in the methodology (Section 12.6), each DISCO has prepared the Year2016 case based on the following:
a) The final Year-2015 case with all reinforcements developed in Section 12.7.1
b) Load forecast of Year-2016
The load flow results are given for each DISCO independently in three main activities.
a) Analysing the developed case under both normal (N-0) and contingency (N-1)
conditions
b) Identifying system reinforcements as appropriate
c) Re-checking the system under (N-0) and (N-1) with system reinforcements
7.1.9
“PESCO & TESCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total loads of PESCO and TESCO by Year-2016 are 3,211 MW and
1,031 MW, respectively (combined: 4,242 MW).
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], some low voltage problems were
recorded within the PESCO and TESCO systems as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
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BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
1346 MIR ALI
132.00
10 0.9474 125.05
1351 DATAKHEL
132.00
10 0.9371 123.69
1355 RAZMAK
132.00
10 0.9488 125.24
1755 SADDA
132.00
10 0.9433 124.52
1775 PARACINA
132.00
10 0.9131 120.53
1870 KULACHI
66.000
1 0.9466 62.473
1880 DARABAN
66.000
1 0.9287 61.293
1890 BUNDKURI
66.000
1 0.9424 62.200
1900 ABBOTABD
66.000
1 0.8216 54.223
1920 T-HAVLAN
66.000
1 0.8655 57.125
1930 HARIPUR
66.000
1 0.9357 61.758
12501 T1
11.000
10 0.9494 10.444
12502 T2
11.000
10 0.9494 10.444
12503 T3
11.000
1 0.9494 10.444
12551 T1
11.000
10 0.9255 10.181
12552 T2
11.000
10 0.9255 10.181
13171 T1
11.000
10 0.9258 10.184
13503 T2
11.000
10 0.9372 10.309
13601 T1
11.000
1 0.9495 10.445
13602 T2
11.000
1 0.9464 10.411
13651 T1
11.000
1 0.9364 10.301
13652 T2
11.000
1 0.9315 10.247
13701 T1
11.000
1 0.9494 10.443
13751 T1
11.000
1 0.9359 10.295
14251 T1
11.000
1 0.9477 10.424
14451 T1
11.000
1 0.9410 10.351
14452 T2
11.000
1 0.9479 10.427
14551 T1
11.000
1 0.9368 10.305
16021 T1
11.000
1 0.9420 10.362
16022 T2
11.000
1 0.9420 10.362
17551 T1
11.000
10 0.9313 10.244
17552 T2
11.000
10 0.9313 10.244
17751 T1
11.000
10 0.9440 10.384
17752 T2
11.000
10 0.9440 10.384
17753 T3
11.000
10 0.9440 10.384
17901 T1
11.000
1 0.9449 10.394
17902 T2
11.000
1 0.9221 10.143
18902 T2
11.000
1 0.9432 10.375
19001 T1
11.000
1 0.7857
20151 T1
11.000
1 0.9478 10.426
20153 T4
11.000
1 0.9475 10.423
8.643
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
PESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
1071 MARDAN III
132.00*
1
10711 T1
11.000
1
1
26.1
26.0
100.3
1071 MARDAN III
132.00*
1
10712 T2
11.000
1
1
26.1
26.0
100.3
1196 PESHFORT
132.00*
1
11961 T1
11.000
1
1
44.8
40.0
112.1
1196 PESHFORT
132.00*
1
11962 T2
11.000
1
1
44.3
40.0
110.8
1240 JAMRUD-I
132.00*
1
12404 T4
11.000
1
1
26.4
26.0
101.7
1270 PESH UNI
132.00*
1
12702 T2
11.000
1
1
40.4
40.0
101.0
1270 PESH UNI
132.00*
1
12703 T3
11.000
1
1
26.8
26.0
103.0
1360 ABBOTABD
132.00*
1
13603 T3
11.000
1
1
26.7
26.0
102.6
1380 MANSEHRA
132.00*
1
13801 T1
11.000
1
1
26.0
26.0
100.1
1380 MANSEHRA
132.00*
1
13802 T2
11.000
1
1
26.6
26.0
102.5
1890 BUNDKURI
66.000*
1
18901 T1
11.000
1
1
13.1
13.0
100.7
1890 BUNDKURI
66.000*
1
18902 T2
11.000
1
1
13.3
13.0
102.3
1900 ABBOTABD
66.000*
1
19001 T1
11.000
1
1
17.6
13.0
135.1
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TESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
1275 BARA
132.00*
10
12751 T1
11.000
10
1
27.9
26.0
107.4
1275 BARA
132.00*
10
12752 T2
11.000
10
1
27.9
26.0
107.4
1275 BARA
132.00*
10
12753 T3
11.000
10
1
27.9
26.0
107.4
1295 D.A.KHEL
132.00*
10
12951 T1
11.000
10
1
26.2
26.0
100.9
1295 D.A.KHEL
132.00*
10
12952 T2
11.000
10
1
26.2
26.0
100.9
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
PESCO Reinforcements
Augmentations:
1. 10/13 by 20/26 MVA at 132 kV Shangla G/S.
2. 20/26 by 40 MVA at 132 kV Jamrud G/S.
3. 20/26 by 40 MVA at 132 kV Peshawar University G/S.
4. 20/26 by 40 MVA at 132 kV Mansehra G/S.
Extensions:
1. Extension of 10/13 MVA Transformer at 66 kV Abbottabad G/S.
2. Extension with 4 MVA at 33 kV Darosh G/S.
3. Extension with 4 MVA at 33 kV Pattan G/S.
132 kV Capacitors:
1. Additional 12 MVAR at 132 kV Tall.
11 kV Capacitors:
1. 7.2 MVAR at T-4, 132 kV Jamrud G/S.
2. 7.2 MVAR at T-3, 132 kV Abbottabad G/S.
3. 4.2 MVAR at T- 2, 66 kV Abbottabad G/S.
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4. 4.8 MVAR at T-1, 132 kV Noseri G/S.
5. 7.2 MVAR each at T-1 and T-4, 132 kV Gadoon Amazai G/S.
Up-Grading of G/S:
1. Conversion of 66 kV Bandkori to 132 kV with 1x10/13 MVA and 1x20/26 MVA
Power T/Fs.
New T/ Lines:
1. 29 KM Line from 132 kV D.I Khan to 132 kV Bandkori with Lynx Conductor.
TESCO Reinforcements
11 kV Capacitors:
1. 7.2 MVAR at T-1, 132 kV Datakhel G/S
2. 7.2 MVAR each at T-1 and T-2, 132 kV Darra Adam Khel G/S.
3. 7.2 MVAR each at T-1, T-2 and T-3, 132 kV Bara.
4. 7.2 MVAR Each at T-1 and T-2, 132 kV Wana G/S.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Some low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
BASE CASE
<-------- B U S -------->
1900 ABBOTABD
66.000
0.83150
0.83150
1.10000
0.90000
BASE CASE
1920 T-HAVLAN
66.000
0.87452
0.87452
1.10000
0.90000
SINGLE 102
1850 JANDOLA
66.000
0.87744
0.96498
1.10000
0.90000
SINGLE 102
1865 SARAROGA
66.000
0.87761
0.96516
1.10000
0.90000
504760-01-A4
65
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 140
1750 ALIZAI
66.000
0.88607
1.02331
1.10000
0.90000
SINGLE 144
1335 KARAK
132.00
0.87463
1.00385
1.10000
0.90000
SINGLE 144
1336 SABIR ABAD
132.00
0.86759
0.99910
1.10000
0.90000
SINGLE 144
1338 SIRAJ BABA
132.00
0.87025
1.00015
1.10000
0.90000
SINGLE 148
1345 S.NURANG
132.00
0.88181
1.00209
1.10000
0.90000
SINGLE 156
1344 T-MIRALI
132.00
0.85218
0.99026
1.10000
0.90000
SINGLE 156
1346 MIR ALI
132.00
0.83683
0.97952
1.10000
0.90000
SINGLE 156
1351 DATAKHEL
132.00
0.89271
0.98627
1.10000
0.90000
SINGLE 156
1355 RAZMAK
132.00
0.89185
0.98461
1.10000
0.90000
CONTINGENCY LEGEND:
SINGLE 102
: OPEN LINE FROM BUS 1261 [DI.KHN-N
132.00] TO BUS 1460 [TANK
132.00] CKT 1
SINGLE 140
: OPEN LINE FROM BUS 1315 [TALL
132.00] TO BUS 1316 [TALL
66.000] CKT 1
SINGLE 144
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1335 [KARAK
132.00] CKT 1
SINGLE 148
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1345 [S.NURANG
132.00] CKT 1
SINGLE 156
: OPEN LINE FROM BUS 1342 [BANNU-II
132.00] TO BUS 1344 [T-MIRALI
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
FLOW
%
1440*TARBELA-R
132.00
1442 GHAZI-IS
132.00 1
SINGLE 3
RATING
112.0
108.4
103.7
1069*DOBIAN
132.00
1070 MARDAN
132.00 1
SINGLE 5
112.0
113.3
101.6
1379 MANSHR-N
132.00
1380*MANSEHRA
132.00 2
SINGLE 173
112.0
116.4
104.2
1379 MANSHR-N
132.00
1380*MANSEHRA
132.00 1
SINGLE 174
112.0
116.4
104.2
CONTINGENCY LEGEND:
SINGLE 3
: OPEN LINE FROM BUS 1069 [DOBIAN
132.00] TO BUS 1080 [SWABI
132.00] CKT 1
SINGLE 5
: OPEN LINE FROM BUS 1070 [MARDAN
132.00] TO BUS 1074 [MARDANII
132.00] CKT 1
SINGLE 173
: OPEN LINE FROM BUS 1379 [MANSHR-N
132.00] TO BUS 1380 [MANSEHRA
132.00] CKT 1
SINGLE 174
: OPEN LINE FROM BUS 1379 [MANSHR-N
132.00] TO BUS 1380 [MANSEHRA
132.00] CKT 2
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
PESCO Reinforcements
132 kV Capacitors:
1. 24 MVAR at 132 kV Dobian.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
11 kV Capacitors:
1. Additional 3.2 MVAR at T-2, 132 kV Swabi G/S.
2. 7.2 MVAR at T- 1, 132 kV Gadoon G/S.
3. 7.2 MVAR at T-1 & T-2, 132 kV Mardan-III
T/ Lines:
1. 8 KM Additional Circuit from 220/132 kV Mansehra to 132 kV Mansehra with
Lynx Conductor.
TESCO Reinforcements
132 kV Capacitors:
1. 24 MVAR at 132 kV Mir Ali.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed PESCO and TESCO base
case for Year-2016 with the above mentioned system reinforcements are given in
Appendix-4 (spread over 7 Sheets).
7.1.10 “IESCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of IESCO by Year-2016 is 3,148 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the IESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
504760-01-A4
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
67
V(PU)
V(KV)
Disco Transmission Expansion Plan
National Power System Expansion Plan
2755 AEL
66.000
2 1.0500 69.300
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few overloading problems was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
215 IBD.P.RD
220.00*
15
2025 SANGJANI
132.00
2
1
533.8
480.0
111.2
220 REWAT-N
220.00*
15
2300 REWAT NEW
132.00
2
1
481.7
480.0
100.3
2169 BT PH-8
132.00*
2
21691 T-3
11.000
2
1
17.8
13.0
137.1
2266 GOLFCITY BT 132.00*
2
22661 T-1
11.000
2
1
14.0
13.0
108.0
2266 GOLFCITY BT 132.00*
2
22662 T-2
11.000
2
1
14.0
13.0
108.0
2850 FATEH JANG
2
28501 T-3
11.000
2
1
37.7
26.0
144.9
132.00*
Note: 220/132KV Power Transformers at Ibd. P.Rd and Rewat New relate to NTDC
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), a few transformer augmentations
were added as follows.
Bus #
Name of 132 kV Grid Station
Existing Capacity (MVA)
13
Proposed Capacity Remark
(MVA)
26
Consumer GS
21691
Bahria Town Ph‐8
22661
Bahia Town Golf City
13
26
Consumer GS
22662
Bahia Town Golf City
13
26
Consumer GS
27821
Gharibwal CF
13
26
Consumer GS
28501
Fatehjang
26
40
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
504760-01-A4
68
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Some voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 89
<-------- B U S -------->
28531 T-1
11.000
0.88569
0.95960
1.10000
0.90000
SINGLE 89
28532 T-2
11.000
0.88574
0.95964
1.10000
0.90000
SINGLE 102
28531 T-1
11.000
0.89705
0.95960
1.10000
0.90000
SINGLE 102
28532 T-2
11.000
0.89710
0.95964
1.10000
0.90000
SINGLE 164
2166 CHAINTBATIAN132.00
0.81743
0.98586
1.10000
0.90000
SINGLE 164
2170 KHUTACTY
132.00
0.81743
0.98586
1.10000
0.90000
SINGLE 164
2180 AZADPATN
132.00
0.84535
0.97861
1.10000
0.90000
SINGLE 164
2519 MANG
33.000
0.82004
0.98622
1.10000
0.90000
SINGLE 164
2925 AZADPATN
33.000
0.83677
0.99967
1.10000
0.90000
SINGLE 164
2930 PALANDRI
132.00
0.86521
0.97641
1.10000
0.90000
SINGLE 164
2940 HAJEERA
132.00
0.89427
0.96820
1.10000
0.90000
SINGLE 164
21661 T-1
11.000
0.77865
0.95154
1.10000
0.90000
SINGLE 164
21662 T-2
11.000
0.77865
0.95154
1.10000
0.90000
SINGLE 164
21701 T-1
11.000
0.81687
1.03262
1.10000
0.90000
SINGLE 164
21702 T-2
11.000
0.77557
0.97170
1.10000
0.90000
SINGLE 164
25191 T-1
11.000
0.78438
0.95739
1.10000
0.90000
SINGLE 164
25192 T-2
11.000
0.78674
0.95926
1.10000
0.90000
SINGLE 182
21721 T-2
11.000
0.89690
0.96647
1.10000
0.90000
SINGLE 182
21722 T-3
11.000
0.89690
0.96647
1.10000
0.90000
SINGLE 182
21761 T-1
11.000
0.86976
0.96159
1.10000
0.90000
SINGLE 182
21762 T-2
11.000
0.86976
0.96159
1.10000
0.90000
SINGLE 182
21763 T-3
11.000
0.87562
0.96675
1.10000
0.90000
66.000
1.11728
1.02850
1.10000
0.90000
SINGLE 440
2782 GARIBWAL
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
504760-01-A4
69
RATING
FLOW
%
Disco Transmission Expansion Plan
National Power System Expansion Plan
2270 CHAKLALA
132.00
2280*CANTT RWP
132.00 1
SINGLE 123
112.0
112.5
100.7
2400 MANGLA
132.00
2500*MIRPUR
132.00 1
SINGLE 144
112.0
119.9
106.5
2195 ISD. H-11
132.00
2200*IBD. I-10
132.00 1
SINGLE 202
114.0
111.8
102.4
2400 MANGLA
132.00 1
SINGLE 384
112.0
113.7
100.7
2142*CHITAR PARI 132.00
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 144
: OPEN LINE FROM BUS 2142 [CHITAR PARI 132.00] TO BUS 2400 [MANGLA
132.00] CKT 1
SINGLE 194
: OPEN LINE FROM BUS 2195 [ISD. H-11
132.00] TO BUS 2200 [IBD. I-10
132.00] CKT 1
SINGLE 299
: OPEN LINE FROM BUS 2270 [CHAKLALA
132.00] TO BUS 2280 [CANTT RWP
132.00] CKT 1
SINGLE 384
: OPEN LINE FROM BUS 2400 [MANGLA
132.00] TO BUS 2500 [MIRPUR
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
1. Reconductoring of 132kV Transmission Lines
a) Chaklala – Cantt Rwp from Lynx to Greely (5 KM)
b) Mangla – Mirpur from Lynx to Greely ( 10.9 KM)
c) H-11 – I-10 Isb from Zigolo to Greely (2.7 KM)
d) Chattar Pari – Mangla from Lynx to Greely ( 10 KM)
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed IESCO base case for Year2016 with the above mentioned system reinforcements are shown in Appendix-4 (spread
over 9 Sheets).
7.1.11 “GEPCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of GEPCO by Year-2016 is 2,641 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the GEPCO system.
504760-01-A4
70
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
No overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
* NONE *
--------------------------------------------------------------------------------
No network reinforcements were added to the GEPCO system by Year-2016 to meet the
planning criteria under (N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
One marginal voltage problem was recorded (outside: 0.90 – 1.10 pu).
504760-01-A4
71
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
SINGLE 103
3230 DASKA
66.000
V-CONT
V-INIT
V-MAX
V-MIN
0.89818
0.97207
1.10000
0.90000
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Three line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
%
3013*GUJRAT-1
132.00
3316 NEW GUJRAT
132.00 2
SINGLE 45
90.0
103.0
112.6
3013*GUJRAT-1
132.00
3316 NEW GUJRAT
132.00 1
SINGLE 46
90.0
103.0
112.6
3018*G.T.ROAD
132.00
3316 NEW GUJRAT
132.00 1
SINGLE 48
90.0
102.0
112.5
3016*GUJRAT-2
132.00
3316 NEW GUJRAT
132.00 1
SINGLE 49
90.0
101.8
111.0
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 45
: OPEN LINE FROM BUS 3013 [GUJRAT-1
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 1
SINGLE 46
: OPEN LINE FROM BUS 3013 [GUJRAT-1
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 2
SINGLE 48
: OPEN LINE FROM BUS 3016 [GUJRAT-2
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 1
SINGLE 49
: OPEN LINE FROM BUS 3018 [G.T.ROAD
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, a few system additions were considered as follows.
1. In & Out of the existing 132 kV Gujrat 1 – Gujrat 2 T/Line at 132 kV bus bar of
proposed 220 kV Gujrat grid station with Greely conductor and re-conductoring
the existing line from Tiger to Greely conductor.
2. In & Out of the existing 132 kV Gakhar – Gujrat 1 T/Line at 132 kV bus bar of
proposed 220 kV Gujrat grid station with Greely conductor and re-conductoring
the existing line segment towards Gujrat 1 grid station from Tiger to Greely
conductor.
3. In & Out of the existing 132 kV Wazirabad – Gujrat 2 T/Line at 132 kV bus bar of
proposed 220 kV Gujrat grid station with Greely conductor and re-conductoring
the existing line segment towards Gujrat 2 grid station from Tiger to Greely
conductor.
504760-01-A4
72
Disco Transmission Expansion Plan
National Power System Expansion Plan
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed GEPCO base case for Year2016 with the above mentioned system reinforcements are shown in Appendix-4 (spread
over 5 Sheets).
7.1.12 “LESCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of LESCO by Year-2016 is 5,302 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the LESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
504760-01-A4
AREA
BUS# X-- NAME --X BASKV
73
AREA CKT LOADING
RATING PERCENT
Disco Transmission Expansion Plan
National Power System Expansion Plan
4023 K.S.KAKU
132.00*
4
40231 KSK T-1
4023 K.S.KAKU
132.00*
4
40232 KSK T-2
11.000
4
1
27.6
26.0
106.0
4
1
32.1
26.0
123.5
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), one some system reinforcement was
added to solve the (N-0) violations as given below.
•
Augmentation of 2x132/11 kV, 26MVA Transformers with 40MVA capacity at
220kV Kala Shah Kaku grid station.
With the above addition, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
4076 RAVI-I
132.00
4465*KHOKAR RD
132.00 1
SINGLE 113
202.0
209.3
105.5
4076 RAVI-I
132.00
4081*CHAHMIRN
132.00 2
SINGLE 116
202.0
204.3
103.0
4085 SHALAMAR
132.00
4411*T SMR STL
132.00 1
SINGLE 116
202.0
220.4
114.7
4087*T-B.GOLD
132.00
4411 T SMR STL
132.00 1
SINGLE 116
202.0
211.5
111.2
4087 T-B.GOLD
132.00
132.00 1
SINGLE 116
202.0
195.2
103.7
4076 RAVI-I
132.00
4465*KHOKAR RD
132.00 1
SINGLE 133
202.0
213.3
108.1
4076 RAVI-I
132.00
4465*KHOKAR RD
132.00 1
SINGLE 135
202.0
206.4
104.5
40871*T-LATIF
%
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 113
: OPEN LINE FROM BUS 4076 [RAVI-I
132.00] TO BUS 4081 [CHAHMIRN
132.00] CKT 2
SINGLE 116
: OPEN LINE FROM BUS 4076 [RAVI-I
132.00] TO BUS 4465 [KHOKAR RD
132.00] CKT 1
SINGLE 133
: OPEN LINE FROM BUS 4085 [SHALAMAR
132.00] TO BUS 4411 [T SMR STL
132.00] CKT 1
SINGLE 135
: OPEN LINE FROM BUS 4087 [T-B.GOLD
132.00] TO BUS 4411 [T SMR STL
132.00] CKT 1
--------------------------------------------------------------------------------
504760-01-A4
74
Disco Transmission Expansion Plan
National Power System Expansion Plan
To overcome these (N-1) violations, one line was added as follows.
•
A new 132kV D/C Kala Shah Kaku – Bhogiwal Transmission Line approximately
30Km on Rail Conductor.
With this additional line, no voltage or line overloading problems were recorded under
both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed LESCO base case for Year2016 with the above mentioned system reinforcements are shown in Appendix-4 (spread
over 9 Sheets).
7.1.13 “FESCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of FESCO by Year-2016 is 3,493 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the FESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
504760-01-A4
75
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
A few overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
360 LUDEWALA
220.00*
15
5419 LUDWLA-N
132.00
5
1
554.7
480.0
115.6
420 NISATABD
220.00*
15
4330 NSHTBD-1
132.00
5
1
356.5
320.0
111.4
4380 FBD-TH-O
132.00*
5
43801 T1
11.000
5
1
40.5
40.0
101.2
4414 STIANA RD
132.00*
5
44141 T1
11.000
5
1
26.7
26.0
102.7
5200 BHAKKAR
66.000
5
132.00*
5
1
40.6
40.0
101.5
5440 BHAMB
132.00*
5
54402 T2
11.000
5
1
40.7
40.0
101.6
5475 BHALWAL
132.00*
5
54751 T1
11.000
5
1
26.6
26.0
102.1
5475 BHALWAL
132.00*
5
54752 T2
11.000
5
1
26.6
26.0
102.1
7455 BHAKKAR
132.00
5
132.00*
6
1
170.2
112.0
152.0
7455 BHAKKAR
7456 CHOKAZAM
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Sr.No.
Grid Station
KV
PSS/E Bus Rinforcement Required
No.
1
Bhalwal
132
5475
2
Bhamb
132
5440
Augmentation 20/26 MVA T/F with 40 MVA
Augmentation 20/26 MVA T/F with 40 MVA
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Many low voltage problems were recorded (outside: 0.90 – 1.10 pu).
504760-01-A4
76
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 140
<-------- B U S -------->
5220 MANKERA
66.000
0.89412
0.97254
1.10000
0.90000
SINGLE 140
5230 HYD.THAL
66.000
0.88095
0.96160
1.10000
0.90000
SINGLE 158
5240 ADHIKOT
66.000
0.89154
0.98560
1.10000
0.90000
SINGLE 162
5220 MANKERA
66.000
0.87821
0.97254
1.10000
0.90000
SINGLE 162
5230 HYD.THAL
66.000
0.86454
0.96160
1.10000
0.90000
SINGLE 163
5042 FAZAL
132.00
0.69882
0.99695
1.10000
0.90000
SINGLE 163
5043 RAKH DAGRAN 132.00
0.70541
0.99010
1.10000
0.90000
SINGLE 163
5044 DERYA KHAN R132.00
0.69828
0.98655
1.10000
0.90000
SINGLE 163
5045 KALOOR KOT
132.00
0.80979
0.99359
1.10000
0.90000
SINGLE 163
5200 BHAKKAR
66.000
0.69132
1.03825
1.10000
0.90000
SINGLE 163
5210 BEHAL
66.000
0.64261
1.01233
1.10000
0.90000
SINGLE 163
5220 MANKERA
66.000
0.53916
0.97254
1.10000
0.90000
SINGLE 163
5230 HYD.THAL
66.000
0.51433
0.96160
1.10000
0.90000
SINGLE 163
7455 BHAKKAR
132.00
0.72331
0.98100
1.10000
0.90000
SINGLE 164
5042 FAZAL
132.00
0.85915
0.99695
1.10000
0.90000
SINGLE 164
5043 RAKH DAGRAN 132.00
0.80989
0.99010
1.10000
0.90000
SINGLE 164
5044 DERYA KHAN R132.00
0.80435
0.98655
1.10000
0.90000
SINGLE 164
5045 KALOOR KOT
132.00
0.75685
0.99359
1.10000
0.90000
SINGLE 164
5200 BHAKKAR
66.000
0.73658
1.03825
1.10000
0.90000
SINGLE 164
5210 BEHAL
66.000
0.69072
1.01233
1.10000
0.90000
SINGLE 164
5220 MANKERA
66.000
0.58495
0.97254
1.10000
0.90000
SINGLE 164
5230 HYD.THAL
66.000
0.56057
0.96160
1.10000
0.90000
SINGLE 164
7455 BHAKKAR
132.00
0.76094
0.98100
1.10000
0.90000
SINGLE 166
5043 RAKH DAGRAN 132.00
0.81812
0.99010
1.10000
0.90000
SINGLE 166
5044 DERYA KHAN R132.00
0.81270
0.98655
1.10000
0.90000
SINGLE 166
5045 KALOOR KOT
132.00
0.88048
0.99359
1.10000
0.90000
SINGLE 166
5200 BHAKKAR
66.000
0.81753
1.03825
1.10000
0.90000
SINGLE 166
5210 BEHAL
66.000
0.77879
1.01233
1.10000
0.90000
SINGLE 166
5220 MANKERA
66.000
0.67609
0.97254
1.10000
0.90000
SINGLE 166
5230 HYD.THAL
66.000
0.65404
0.96160
1.10000
0.90000
SINGLE 166
7455 BHAKKAR
132.00
0.82317
0.98100
1.10000
0.90000
SINGLE 168
5220 MANKERA
66.000
0.87419
0.97254
1.10000
0.90000
SINGLE 168
5230 HYD.THAL
66.000
0.86035
0.96160
1.10000
0.90000
SINGLE 169
5042 FAZAL
132.00
0.88488
0.99695
1.10000
0.90000
SINGLE 169
5043 RAKH DAGRAN 132.00
0.84336
0.99010
1.10000
0.90000
SINGLE 169
5044 DERYA KHAN R132.00
0.83826
0.98655
1.10000
0.90000
SINGLE 169
5200 BHAKKAR
66.000
0.78828
1.03825
1.10000
0.90000
SINGLE 169
5210 BEHAL
66.000
0.74698
1.01233
1.10000
0.90000
SINGLE 169
5220 MANKERA
66.000
0.64131
0.97254
1.10000
0.90000
SINGLE 169
5230 HYD.THAL
66.000
0.61813
0.96160
1.10000
0.90000
SINGLE 169
7455 BHAKKAR
132.00
0.80147
0.98100
1.10000
0.90000
SINGLE 171
5120 MAKARWAL
66.000
0.88729
1.01808
1.10000
0.90000
SINGLE 196
5476 T-BHERA
132.00
0.59564
1.02169
1.10000
0.90000
SINGLE 196
5478 BHERA.IN
132.00
0.58336
1.01705
1.10000
0.90000
SINGLE 196
5480 H.FAQIRN
132.00
0.60249
1.01643
1.10000
0.90000
SINGLE 196
5700 PATANKOT
66.000
0.83558
1.00408
1.10000
0.90000
SINGLE 196
5705 T-PATHAN
66.000
0.85780
1.00915
1.10000
0.90000
SINGLE 196
5710 BHALWAL
66.000
0.83558
1.00408
1.10000
0.90000
SINGLE 196
5720 H.FAQIRN
66.000
0.66391
1.00819
1.10000
0.90000
SINGLE 196
5770 BHABRA
66.000
0.59083
0.97160
1.10000
0.90000
504760-01-A4
77
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 226
5480 H.FAQIRN
132.00
0.83874
1.01643
1.10000
0.90000
SINGLE 226
5720 H.FAQIRN
66.000
0.85330
1.00819
1.10000
0.90000
SINGLE 226
5770 BHABRA
66.000
0.80262
0.97160
1.10000
0.90000
SINGLE 239
7860 GARMHRJA
66.000
1.11054
1.04346
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 140
: OPEN LINE FROM BUS 5000 [DAUDKHLO
132.00] TO BUS 5020 [MIANWALI
132.00] CKT 1
SINGLE 158
: OPEN LINE FROM BUS 5030 [WANBUCHN
132.00] TO BUS 5410 [QUAIDABD
132.00] CKT 1
SINGLE 162
: OPEN LINE FROM BUS 5032 [CHASHM-L
132.00] TO BUS 5040 [PIPLAN
132.00] CKT 1
SINGLE 163
: OPEN LINE FROM BUS 5040 [PIPLAN
132.00] TO BUS 5042 [FAZAL
132.00] CKT 1
SINGLE 164
: OPEN LINE FROM BUS 5040 [PIPLAN
132.00] TO BUS 5045 [KALOOR KOT
132.00] CKT 2
SINGLE 166
: OPEN LINE FROM BUS 5042 [FAZAL
132.00] TO BUS 5043 [RAKH DAGRAN 132.00] CKT 1
SINGLE 168
: OPEN LINE FROM BUS 5043 [RAKH DAGRAN 132.00] TO BUS 7455 [BHAKKAR
132.00] CKT 1
SINGLE 169
: OPEN LINE FROM BUS 5045 [KALOOR KOT
132.00] TO BUS 7455 [BHAKKAR
132.00] CKT 2
SINGLE 171
: OPEN LINE FROM BUS 5100 [DAUDKHEL
66.000] TO BUS 5120 [MAKARWAL
66.000] CKT 1
SINGLE 196
: OPEN LINE FROM BUS 5419 [LUDWLA-N
132.00] TO BUS 5476 [T-BHERA
132.00] CKT 1
SINGLE 226
: OPEN LINE FROM BUS 5476 [T-BHERA
132.00] TO BUS 5480 [H.FAQIRN
132.00] CKT 1
SINGLE 239
: OPEN LINE FROM BUS 7850 [AHMDPRSL
66.000] TO BUS 7860 [GARMHRJA
66.000] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
4477 TTSINGHN
132.00
4490*JHANG
132.00 1
SINGLE 85
112.0
117.3
109.1
%
4470 GOJRA
132.00
4471*T-HBSHAH
132.00 1
SINGLE 91
112.0
112.1
102.3
4477 TTSINGHN
132.00
4490*JHANG
132.00 1
SINGLE 91
112.0
110.3
101.4
4470 GOJRA
132.00
4471*T-HBSHAH
132.00 1
SINGLE 108
112.0
118.4
109.0
5040 PIPLAN
132.00
5045*KALOOR KOT
132.00 2
SINGLE 163
112.0
119.5
131.8
5045 KALOOR KOT
132.00
7455*BHAKKAR
132.00 2
SINGLE 163
112.0
101.9
125.7
5040 PIPLAN
132.00
5042*FAZAL
132.00 1
SINGLE 164
112.0
115.5
120.0
5042 FAZAL
132.00
5043*RAKH DAGRAN 132.00 1
SINGLE 164
112.0
99.5
109.7
5040 PIPLAN
132.00
5045*KALOOR KOT
132.00 2
SINGLE 166
112.0
101.5
102.9
5040 PIPLAN
132.00
5042*FAZAL
132.00 1
SINGLE 169
112.0
106.8
107.8
5200 BHAKKAR
66.000
7455*BHAKKAR
132.00 1
SINGLE 169
40.0
40.0
100.1
5480 H.FAQIRN
132.00
5720*H.FAQIRN
66.000 1
SINGLE 196
32.0
36.7
114.6
5600 LUDEWALA
66.000
5710*BHALWAL
66.000 1
SINGLE 196
39.0
42.3
129.7
5710 BHALWAL
66.000
5720*H.FAQIRN
66.000 1
SINGLE 196
39.0
36.4
140.8
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 85
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4471 [T-HBSHAH
132.00] CKT 1
SINGLE 91
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4490 [JHANG
132.00] CKT 1
SINGLE 108
: OPEN LINE FROM BUS 4477 [TTSINGHN
132.00] TO BUS 4490 [JHANG
132.00] CKT 1
SINGLE 163
: OPEN LINE FROM BUS 5040 [PIPLAN
132.00] TO BUS 5042 [FAZAL
132.00] CKT 1
SINGLE 164
: OPEN LINE FROM BUS 5040 [PIPLAN
132.00] TO BUS 5045 [KALOOR KOT
132.00] CKT 2
504760-01-A4
78
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 166
: OPEN LINE FROM BUS 5042 [FAZAL
132.00] TO BUS 5043 [RAKH DAGRAN 132.00] CKT 1
SINGLE 169
: OPEN LINE FROM BUS 5045 [KALOOR KOT
132.00] TO BUS 7455 [BHAKKAR
132.00] CKT 2
SINGLE 196
: OPEN LINE FROM BUS 5419 [LUDWLA-N
132.00] TO BUS 5476 [T-BHERA
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Sr.No. Rinforcement Required
1
2
3
4
5
New single cct. On Rail From 132 KV T.T.Singh New to 132 KV Jhang city.
Conversion from 66 KV Bhabra to 132 KV Bhabra
Conversion from 66 KV Pathan Kot to 132 KV Pathan kot
Conversion from 66 KV Noshara Skaser to 132 KVNoshara Skaser
New Double cct. On Rail From 132 KV T.T.Singh New to 132 KV H.B Shah
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed FESCO base case for Year2016 with the above mentioned system reinforcements are shown in Appendix-4 (spread
over 6 Sheets).
7.1.14 “MEPCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of MEPCO by Year-2016 is 4,045 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], some low voltage problems were
recorded within the MEPCO system as given below. As mentioned in the MEPCO-2015
analysis, the upper voltage limit for MEPCO system was set to 1.08 pu instead of 1.05
pu due to the radial nature of the system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
504760-01-A4
79
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6415 CHISTIAN
66.000
6 0.9041 59.673
6480 MNCHNBAD
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6450 DHARNWLA
66.000
6 0.8191 54.061
6490 MCLD.GNJ
66.000
6 0.8581 56.634
66.000
6 0.8874 58.567
61621 BREWLA-O T-111.000
6 0.9407 10.348
64501 DHARNWLA T-111.000
6 0.8061
8.867
64801 MNCHNBAD T-111.000
6 0.8763
9.640
64802 MNCHNBAD T-211.000
6 0.9085
9.994
64901 MCLD.GNJ T-111.000
6 0.8840
9.724
65201 FORT ABB T-111.000
6 0.9417 10.359
70021 KASSOWAL T-111.000
6 0.8945
9.839
70041 CHAK-83 T-1 11.000
6 0.9408 10.349
70101 KACHAKHU T-111.000
6 0.9460 10.406
74561 CHOKAZAM T1 11.000
6 0.8613
79651 JLALPRPW T-111.000
6 0.9361 10.297
79652 JLALPRPW T-211.000
6 0.9220 10.142
9.475
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some overloading problems were recorded based on 100% of rating A.
-------------------------------------------------------------------------------SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
6175 LUDDEN
132.00*
6
61752 LUDDEN T-2
11.000
6
1
13.7
13.0
105.6
6178 KARAMPUR
132.00*
6
61781 KARAMPUR T-111.000
6
1
13.2
13.0
101.2
6450 DHARNWLA
66.000*
6
64501 DHARNWLA T-111.000
6
1
17.9
13.0
137.5
6490 MCLD.GNJ
66.000*
6
64901 MCLD.GNJ T-111.000
6
1
15.0
13.0
115.3
7002 KASSOWAL
132.00*
6
70021 KASSOWAL T-111.000
6
1
28.3
26.0
109.0
7030 KABIRWLA
132.00*
6
70302 KABIRWLA T-211.000
6
1
29.8
26.0
114.6
7075 MUKHDM.R
132.00*
6
70752 MUKHDM.R T-211.000
6
1
19.6
13.0
151.1
7145 BPUR CANTT
132.00*
6
71452 BPCANTT T-2 11.000
6
1
35.1
26.0
135.0
7147 KARORPCA
132.00*
6
71472 KARORPCA T-211.000
6
1
27.6
26.0
106.3
7178 CHAK 139
132.00*
6
71781 CHAK 139 T-111.000
6
1
31.1
26.0
119.6
7225 R.Y.KHN2
132.00*
6
72251 R.Y.KHN2 T-111.000
6
1
35.1
26.0
134.9
7285 QASIMPUR
132.00*
6
66.000
6
2
55.6
37.0
150.4
7332 N.A.WALI
132.00*
6
73321 N.A.WALI T-111.000
6
1
26.3
26.0
101.1
7456 CHOKAZAM
132.00*
6
74561 CHOKAZAM T1 11.000
6
1
27.0
13.0
207.7
7460 D.G.KHAN
132.00*
6
66.000
6
1
34.5
31.5
109.4
7590 SKHISRWR
132.00*
6
75901 SKHISRWR T-111.000
6
1
8.4
6.3
133.1
7965 JLALPRPW
66.000*
6
79651 JLALPRPW T-111.000
6
1
19.6
13.0
150.9
7965 JLALPRPW
66.000*
6
79652 JLALPRPW T-211.000
6
1
20.2
13.0
155.1
7955 QASIMPUR
7910 D.G.KHAN
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
504760-01-A4
80
Disco Transmission Expansion Plan
National Power System Expansion Plan
Sub Station
Transformer
2016
Associated
Transmission Lines
NO.
KV
Proposed
MVA
Karampur
Khanewal
Ludden
Sahuka
T-2
T-4
T-2
T-3
132/11
132/11
132/11
132/11
Augmentation
Extension
Augmentation
Extension
26
40
26
26
Chistian
T-2
66/11
Conversion
13
2016-220 kv Chishtian Chishtian .56 KM Lynx
Dahranwala
T-1
66/11
Conversion
13
2016 - Chishtian - Dahranwala
S/C 35 km Rail
Dahranwala
T-2
66/11
Conversion
13
Faqirwali
T-1
66/11
Conversion
26
Fort Abbas
T-1
66/11
Conversion
26
Minchinabad
T-1
66/11
Conversion
26
2016 - Bahawal Nagar Minchinabad S/C 43 KM Lynx
Mwcleod Gunj
T-1
66/11
Conversion
26
2016 - Minchinabad - Mclod
Gunj S/C 21 KM Lynx
Chowk Azam
T-2
132/11
Augmentation
26
Jalal Pur Pirwala
T-1
66/11
Conversion
26
Jalal Pur Pirwala
Jam Pur
Jam Pur
Kabirwala
Khan Pur
Khair pur Sadat
Noor Ahmad Wali
Rahim Yar Khan II
Sakhi Sarwar
Taunsa
T-1
T-1
T-2
T-3
T-2
T-1
T-1
T-2
T-1
T-2
66/11
132
132/11
132/11
132/11
132/11
132/11
132/11
132/11
Augmentation
Extension
Extension
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
Augmentation
26
26
26
26
40
26
40
40
13
26
Chotti
T-1
66/11
Conversion
13
Dajal
Nawan Kot
Shah Sadar Din
Shadun Lund
K.P.Baga Sher
Chak 139 / 15 L
R.Y.Khan 3
R.Y.Khan 4
T-1
T-1
T-1
T-1
66/11
66/11
66/11
66/11
T-1
T-2
132/11
132/11
Conversion
Conversion
Conversion
Conversion
Extension
Extension
New
New
26
13
26
26
26
26
26
26
2016-132 kv Haroonabad - T
Faqirwali 22 km, lynx T
Faqirwali Faqirwali 2 km
2016- T Faqirwali - Fort Abbas
29 km, lynx
2016 - Shujabad - Jalal Pur
Pirwala S/C 45 KM Lynx
2016 - Kot Chutta - Chotti 18
KM Lynx S/C
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
504760-01-A4
81
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse was recorded.
Out-of-Limits Bus Voltages:
A few voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 90
<-------- B U S -------->
7006 HEAD SIDHNAI132.00
0.80649
0.97886
1.10000
0.90000
SINGLE 90
7030 KABIRWLA
132.00
0.83136
0.99479
1.10000
0.90000
SINGLE 90
7032 MP.PAHOR
132.00
0.81913
0.98687
1.10000
0.90000
SINGLE 164
7289 JALALPWL
132.00
0.87038
0.95144
1.10000
0.90000
SINGLE 206
7435 PARCO
132.00
0.74090
0.99292
1.10000
0.90000
SINGLE 206
7436 T-PARCO
132.00
0.74118
0.99313
1.10000
0.90000
SINGLE 206
7470 ROJHAN
132.00
0.87890
0.99613
1.10000
0.90000
SINGLE 206
7930 JAMPUR
132.00
0.61257
1.01422
1.10000
0.90000
SINGLE 206
7933 FAZALPUR
132.00
0.57387
0.99681
1.10000
0.90000
SINGLE 206
7951 RAJANPUR
132.00
0.80750
0.98970
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 90
: OPEN LINE FROM BUS 7030 [KABIRWLA
132.00] TO BUS 7109 [P.GAIB-2
132.00] CKT 1
SINGLE 167
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7321 [T-GUJRAT
132.00] CKT 1
SINGLE 206
: OPEN LINE FROM BUS 7460 [D.G.KHAN
132.00] TO BUS 7930 [JAMPUR
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
7075 MUKHDM.R
132.00
7100*P.GAIB-1
132.00 1
SINGLE 91
112.0
117.0
100.3
7100 P.GAIB-1
132.00
7280*MN.VR.RD
132.00 2
SINGLE 98
112.0
125.4
109.2
7100 P.GAIB-1
132.00
7280*MN.VR.RD
132.00 1
SINGLE 99
112.0
125.4
109.2
7100 P.GAIB-1
132.00
7280*MN.VR.RD
132.00 1
SINGLE 100
112.0
118.6
103.2
7100 P.GAIB-1
132.00
7280*MN.VR.RD
132.00 2
SINGLE 100
112.0
118.6
103.2
7300 KAPCO
132.00
7321*T-GUJRAT
132.00 1
SINGLE 169
112.0
119.0
105.3
7300 KAPCO
132.00
7331*KOTADU-O
132.00 2
SINGLE 170
202.0
295.1
139.9
7300 KAPCO
132.00
7331*KOTADU-O
132.00 1
SINGLE 171
202.0
295.1
139.9
7470 ROJHAN
132.00
7951*RAJANPUR
132.00 1
SINGLE 206
112.0
109.8
121.5
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Disco Transmission Expansion Plan
National Power System Expansion Plan
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 91
: OPEN LINE FROM BUS 7050 [JEHANIAN
132.00] TO BUS 7100 [P.GAIB-1
132.00] CKT 2
SINGLE 98
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7280 [MN.VR.RD
132.00] CKT 1
SINGLE 99
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7280 [MN.VR.RD
132.00] CKT 2
SINGLE 100
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7285 [QASIMPUR
132.00] CKT 1
SINGLE 169
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7330 [MZFRGARH
132.00] CKT 1
SINGLE 170
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7331 [KOTADU-O
132.00] CKT 1
SINGLE 171
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7331 [KOTADU-O
132.00] CKT 2
SINGLE 206
: OPEN LINE FROM BUS 7460 [D.G.KHAN
132.00] TO BUS 7930 [JAMPUR
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
No.
Transmission Line
Additions/Modification
KM
1
Reconducting KAPCO to Kot Addu 2/C
Rail to 2-B Rail
1.9
2
Reconducting KAPCO to T‐ Gujarat
Lynex to Greelay
32
4
Reconducting P‐Gaib‐1 to M Rashid
Lynex to Greelay
27
5
Reconducting P‐Gaib‐1 to Vehari Road
Lynex to Greelay
7
6
Wapda Town ‐1 to Bosan Road
Lynex to Greelay
10
No.
Substation
Capacitors
1
132 Kv Shujabad
48 MVAR
2
132 Kv Khan Pur
36 MVAR
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed MEPCO base case for Year2016 with the above mentioned system reinforcements are given in Appendix-4 (spread
over 8 Sheets).
7.1.15 “HESCO & SEPCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of HESCO and SEPCO by Year-2016 is 2,773 MW.
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National Power System Expansion Plan
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], a few voltage problems were recorded
within the HESCO and SEPCO systems as given below. The upper voltage limit for was
set to 1.08 pu instead of 1.05 pu due to the coverage and radial nature of the system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
83101 1
11.000
V(PU)
V(KV)
7 1.0902 11.992
BUS# X-- NAME --X BASKV AREA
83102 2
11.000
V(PU)
V(KV)
7 1.0902 11.992
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
8345 THARI MIRWAH66.000
V(PU)
V(KV)
7 0.9313 61.463
BUS# X-- NAME --X BASKV AREA
9546 KHIPRO
V(PU)
V(KV)
66.000
7 0.9487 62.617
80701 1
11.000
7 0.9495 10.445
80702 2
11.000
7 0.9495 10.445
81003 3
11.000
7 0.9451 10.396
81202 2
11.000
7 0.9160 10.076
81302 2
11.000
7 0.9278 10.206
81403 3
11.000
7 0.9310 10.241
81411 1
11.000
7 0.9183 10.102
83411 1
11.000
7 0.9201 10.121
83412 2
11.000
7 0.9187 10.106
83611 1
11.000
7 0.9079
83612 2
11.000
7 0.9079
95461 1
11.000
7 0.9417 10.359
9.987
9.987
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few marginal overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
8141 MAHRABPR
132.00*
7
81411 1
11.000
7
1
15.1
13.0
116.5
8150 N.FEROZE
132.00*
7
81501 1
11.000
7
1
27.0
26.0
103.8
8150 N.FEROZE
132.00*
7
81502 2
11.000
7
1
26.7
26.0
102.5
8185 KASHMORE
132.00*
7
81851 1
11.000
7
1
13.3
13.0
102.1
8185 KASHMORE
132.00*
7
81852 2
11.000
7
1
13.3
13.0
102.1
8250 LARKAN-2
132.00*
7
82501 1
11.000
7
1
41.6
40.0
104.0
8250 LARKAN-2
132.00*
7
82502 2
11.000
7
1
42.6
40.0
106.6
9020 N.S.SNGR
132.00*
7
90202 2
11.000
7
1
13.1
13.0
100.6
9100 TANDOJAM
132.00*
7
91002 2
11.000
7
1
13.5
13.0
103.9
9150 PHULLELI
132.00*
7
91503 3
11.000
7
1
26.1
26.0
100.4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
9160 HYDNTPS
132.00*
7
91601 1
11.000
7
1
41.4
40.0
103.5
9163 KOHSAR
132.00*
7
91632 2
11.000
7
1
26.3
26.0
101.0
9290 SUJAWAL
132.00*
7
92902 2
11.000
7
1
13.3
13.0
102.0
9546 KHIPRO
66.000*
7
95461 1
11.000
7
1
13.1
13.0
100.5
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Under HESCO:
1. Addition of 4.8 MVAR Capacitor Bank at T-2 of 132KV Grid Station N.S SNGR
(9020).
2. Addition of 4.8 MVAR Capacitor Bank at T-2 of 132KV Grid Station Tando Jam
(9100).
3. Augmentation of T-3 20/26MVA Power Transformer, with 40 MVA at 132KV Grid
Station Phulleli (9150).
4. Augmentation of T-1 20/26 MVA Power Transformer, with 40 MVA at 132KV Grid
Station N.T.P.S (9160), after this all Power Transformers will be 40 MVA.
5. Augmentation of T-1 10/13 MVA Power Transformer, with 40 MVA at 132KV Grid
Station Kohsar (9163).
6. Addition of 4.8 MVAR Capacitor Bank at T-2 of 132KV Grid Station Sujawal
(9290).
7. Addition of another 66/11KV, 10/13 MVA Power Transformer at 66KV Grid
Station Khipro (9546).
Under SEPCO:
1. Addition of another 132/11KV, 10/13 MVA Power Transformer at 132KV Grid
Station Mahrabpur (8141).
2. Addition of 3rd 132/11KV, 20/26 MVA Power Transformer at 132KV Grid Station
N. Feroze (8150).
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National Power System Expansion Plan
3. Augmentation of T-1 & T-2 Power Transformers, with 20/26 MVA at 132KV Grid
Station Kashmore (8185).
4. Shifting of 20 MW Load from 132KV Grid Station Larkana-2 (8250) to 132KV
Larkana Old (8255) & 132KV Larkana-3 Grid Stations (8256). 10 MW has been
added / shifted to each Grid Station.
5. Augmentation of both 10/13 MVA Power Transformers with 20/26MVA at 132KV
Grid Station Larkana-3 (8256).
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded
Out-of-Limits Bus Voltages:
Many voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 48
<-------- B U S -------->
8145 THARU SHAH
132.00
0.84477
0.96526
1.10000
0.90000
SINGLE 48
8150 N.FEROZE
132.00
0.84686
0.96703
1.10000
0.90000
SINGLE 48
8361 PADIDAN
132.00
0.83735
0.95901
1.10000
0.90000
SINGLE 50
8142 NEW JATOI
132.00
0.83867
1.00134
1.10000
0.90000
SINGLE 50
8160 MORO
132.00
0.82229
1.01055
1.10000
0.90000
SINGLE 53
8174 SEHWAN
132.00
0.89365
1.02148
1.10000
0.90000
SINGLE 53
8175 BHAN SAEDABD132.00
0.87261
1.03844
1.10000
0.90000
SINGLE 53
8177 PARCO
132.00
0.87753
1.03334
1.10000
0.90000
SINGLE 73
8200 THULL
132.00
0.86409
0.99922
1.10000
0.90000
SINGLE 73
8205 JACOBABAD
132.00
0.85288
1.00760
1.10000
0.90000
SINGLE 73
8215 JACOBABAD-II132.00
0.85242
1.00534
1.10000
0.90000
SINGLE 78
8200 THULL
132.00
0.81851
0.99922
1.10000
0.90000
SINGLE 78
8205 JACOBABAD
132.00
0.80133
1.00760
1.10000
0.90000
SINGLE 78
8215 JACOBABAD-II132.00
0.80138
1.00534
1.10000
0.90000
SINGLE 78
8221 HAMAYOON
132.00
0.79754
1.02538
1.10000
0.90000
SINGLE 90
8241 MIROKHAN
132.00
0.87475
1.00678
1.10000
0.90000
SINGLE 90
8485 SHADADKT
132.00
0.87852
0.99771
1.10000
0.90000
SINGLE 90
8500 GHARI KHAIRO66.000
0.85607
1.00107
1.10000
0.90000
SINGLE 94
8500 GHARI KHAIRO66.000
0.89707
1.00107
1.10000
0.90000
SINGLE 100
8252 WARAH
132.00
0.89753
0.98321
1.10000
0.90000
SINGLE 174
9494 SAMARO
66.000
0.89027
1.02272
1.10000
0.90000
SINGLE 174
9506 PITHORO
66.000
0.88129
1.01602
1.10000
0.90000
SINGLE 174
9595 KUNRI
66.000
0.89530
1.00807
1.10000
0.90000
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Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 240
9486 BADIN
66.000
0.89131
1.05017
1.10000
0.90000
SINGLE 240
9487 T/T.BAGO
66.000
0.89558
1.02694
1.10000
0.90000
SINGLE 240
9488 TANDO BAGO
66.000
0.89224
1.02410
1.10000
0.90000
SINGLE 240
9490 KADHAN
66.000
0.88124
1.04485
1.10000
0.90000
SINGLE 260
9515 T-KALOI
66.000
0.87540
1.00776
1.10000
0.90000
SINGLE 260
9516 KALOI
66.000
0.86223
0.99703
1.10000
0.90000
SINGLE 260
9518 PANGIRO
66.000
0.87931
1.00792
1.10000
0.90000
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
Line/Transformer Overloads:
Three marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
9220 T.M.KHAN
132.00
9471*MATLI NEW
132.00 2
SINGLE 196
112.0
113.9
102.0
%
9220 T.M.KHAN
132.00
9471*MATLI NEW
132.00 1
SINGLE 197
112.0
113.9
102.0
9514*NOUKOT
66.000
9515 T-KALOI
66.000 1
SINGLE 240
39.0
39.4
100.8
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 196
: OPEN LINE FROM BUS 9220 [T.M.KHAN
132.00] TO BUS 9471 [MATLI NEW
132.00] CKT 1
SINGLE 197
: OPEN LINE FROM BUS 9220 [T.M.KHAN
132.00] TO BUS 9471 [MATLI NEW
132.00] CKT 2
SINGLE 240
: OPEN LINE FROM BUS 9485 [BADIN
132.00] TO BUS 9486 [BADIN
66.000] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Under HESCO:
1. Second Circuit from 132KV Grid Station T.M Khan (9220) to Matli New Grid
Station (9471) with Greeley Conductor & Reconductoring of existing circuit from
(9471) to New Matli (at this time this circuit is express from T.M Khan, and
feeding to 132KV Grid Station Badin, (9485).
2. Add 1.2 MVAR capacitor Bank at T-1 of 66KV Grid Station Kaloi (9516).
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Disco Transmission Expansion Plan
National Power System Expansion Plan
Under SEPCO:
1. New 132KV SDT Transmission Line from Dadu New (8170) – Moro (8160)
Nausheroferoze (8150) with Greeley Conductor.
2. Second circuit from New Shikarpur (8219) – Hamyoon (8221) – Jacobabad-I Grid
Station (8205) with Lynx Conductor.
3. Second circuit from 132KV Grid Station Ratodero (8240) – Miro Khan Grid
Station (8241) with Greeley Conductor.
4. Second circuit from 132KV Dadu New (8170) – Bhan Saeedabad Grid Station
(8175) with Lynx Conductor.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed HESCO and SEPCO base
case for Year-2016 with the above mentioned system reinforcements are given in
Appendix-4 (spread over 11 Sheets).
7.1.16 “QESCO” Distribution System for Year-2016
The Year-2016 base case was studied based on the planning criteria described in
Section 12.5. The total load of QESCO by Year-2016 is 1,827 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], two marginal low voltage problems
were recorded within the QESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
BUS# X-- NAME --X BASKV AREA
8510 USTAMOHD
132.00
V(PU)
V(KV)
8 0.9467 124.97
BUS# X-- NAME --X BASKV AREA
8515 JHAL MGS
132.00
V(PU)
V(KV)
8 0.9414 124.27
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Three overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
645 MASTUNG
220.00*
15
9780 MASTUNG
132.00
8
1
382.9
320.0
119.7
970 QUETTA
220.00*
15
9660 QUETTAIN
132.00
8
1
607.8
480.0
126.6
8510 USTAMOHD
132.00*
8
11.000
8
1
26.1
26.0
100.3
85102
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), one line was added to solve the (N-0)
violations, as follows.
1. 132 KV Usta Muhammad (85102) = fixed shunt of 7.2 MVAR
With the above line addition, no voltage or line overloading problems were recorded
under (N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outage would lead to area collapse was recorded.
Out-of-Limits Bus Voltages:
Only one contingency would lead to a few low voltage problems was recorded (outside:
0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 101
<-------- B U S -------->
9810 NOSHKI
132.00
0.89666
0.99000
1.10000
0.90000
SINGLE 101
9813 MAL
132.00
0.86275
0.98112
1.10000
0.90000
SINGLE 101
9850 GIDDER
132.00
0.72286
0.98991
1.10000
0.90000
SINGLE 101
9855 KHARAN
132.00
0.81230
0.98217
1.10000
0.90000
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Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 101
9857 DLBINDIN
132.00
0.84793
0.99402
1.10000
0.90000
SINGLE 101
9858 CHAGAI
132.00
0.87626
0.99297
1.10000
0.90000
SINGLE 101
9859 BASIMA
132.00
0.74876
0.98872
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 101
: OPEN LINE FROM BUS 9840 [SURAB
132.00] TO BUS 9850 [GIDDER
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
9660 QUETTAIN
132.00
9670*SARYAB
132.00 2
SINGLE 32
112.0
118.7
106.6
%
9660 QUETTAIN
132.00
9670*SARYAB
132.00 1
SINGLE 33
112.0
118.7
106.6
9660*QUETTAIN
132.00
9700 Q.S.MAND
132.00 1
SINGLE 44
112.0
117.9
101.9
9713 HURAMZAI
132.00
9715*YARU
132.00 2
SINGLE 59
112.0
115.4
101.3
9713 HURAMZAI
132.00
9715*YARU
132.00 1
SINGLE 60
112.0
115.4
101.3
9781 K-KOCHA
132.00
9820*MANGOCHR
132.00 1
SINGLE 81
112.0
119.2
111.4
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 32
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9670 [SARYAB
132.00] CKT 1
SINGLE 33
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9670 [SARYAB
132.00] CKT 2
SINGLE 44
: OPEN LINE FROM BUS 9690 [MARIABAD
132.00] TO BUS 9700 [Q.S.MAND
132.00] CKT 1
SINGLE 59
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9715 [YARU
132.00] CKT 1
SINGLE 60
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9715 [YARU
132.00] CKT 2
SINGLE 81
: OPEN LINE FROM BUS 9780 [MASTUNG
132.00] TO BUS 9820 [MANGOCHR
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
1. Line bay (In/out) at 132 KV Kad Kucha Grid Station (9781)
2. Additional SDT circuit with Rail conductor from Kad Kucha (9781) to Mangocher
(9820)
3. Re-conducting of 1st CKT Huramzai (9713) to Yaru (9715) from Lynx to Greeley
4. Installation of additional fixed shunt at T-1 & T-2 (9850) = 1.2 MVAR each
5. Installation of 132 KV Capacitor Bank of 24 MVAR at Kharan (9855)
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Disco Transmission Expansion Plan
National Power System Expansion Plan
6. Reconductoring of 1st circuit from Quetta Industrial to Q.S.Manda with Greeley
conductor
7. Stringing of 3rd circuit from Quetta Industrial – Sariab with Lynx conductor
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed QESCO base case for Year2016 with the above mentioned system reinforcements are given in Appendix-4 (spread
over 5 Sheets).
7.1.17 Year-2018 Study Base Cases
As mentioned in the methodology (Section 12.6), each DISCO has prepared the Year2018 case based of the following:
a) The final Year-2016 case with all reinforcements developed in Section 12.7.2
b) Load forecast of Year-2018
The load flow results are given for each DISCO independently in three main activities.
a) Analyzing the developed case under both normal (N-0) and contingency (N-1)
conditions
b) Identifying system reinforcements as appropriate
c) Re-checking the system under (N-0) and (N-1) with system reinforcements
7.1.18 “PESCO & TESCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total loads of PESCO and TESCO by Year-2018 are 3,452 MW and
1,166 MW, respectively (combined: 4,618 MW).
504760-01-A4
91
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], many low voltage problems were
recorded within the PESCO and TESCO systems as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
1128 DIR
132.00
1144 MADYAN
1250 LANDIKOT
1260 PESHCANT
132.00
1 0.9494 125.32
1302 GURGURI
132.00
1 0.9320 123.02
1309 GHILJO
66.000
10 0.9361 61.786
1312 HANGU
132.00
1 0.9373 123.73
1315 TALL
132.00
1 0.9075 119.79
1316 TALL
66.000
1 0.9367 61.821
1317 KORAIZ
132.00
10 0.9304 122.81
1344 T-MIRALI
132.00
1 0.9234 121.89
1345 S.NURANG
132.00
1 0.9438 124.58
1346 MIR ALI
132.00
10 0.9126 120.46
1350 MIRANSHA
132.00
10 0.9183 121.22
1351 DATAKHEL
132.00
10 0.9080 119.86
1352 GHALANAI
132.00
10 0.9442 124.64
1355 RAZMAK
132.00
10 0.9072 119.74
1390 BATAL
132.00
1 0.9429 124.46
1394 THAKOT
132.00
1 0.9271 122.38
1395 PATTAN
33.000
1 0.9385 30.970
1535 LAKARAI
132.00
10 0.9223 121.75
1601 T-SSPS
66.000
1 0.9113 60.145
1602 WARSAK-D
66.000
1 0.8960 59.133
1605 SSPS
66.000
10 0.9105 60.096
1675 WARAI
66.000
1 0.9379 61.899
1686 KHAR BAJAWAR132.00
10 0.9209 121.56
1690 DIR
66.000
1 0.9301 61.389
1720 KALAYA
132.00
10 0.9417 124.31
1750 ALIZAI
66.000
10 0.9084 59.956
1755 SADDA
132.00
10 0.8356 110.30
1775 PARACINA
132.00
10 0.7849 103.61
1780 BANNU
66.000
1 0.9048 59.720
1790 KRM.GRHI
66.000
1 0.8606 56.800
1830 PEZU
132.00
1 0.9356 123.50
1870 KULACHI
66.000
1 0.9337 61.625
1872 T-KULCHI
66.000
1 0.9487 62.614
1880 DARABAN
66.000
1 0.9134 60.286
1900 ABBOTABD
66.000
1 0.7682 50.701
1920 T-HAVLAN
66.000
1 0.8194 54.079
1930 HARIPUR
66.000
1 0.9021 59.539
2015 MUZAFBAD
132.00
1 0.9403 124.11
5015 TAJAZAI
132.00
1 0.9382 123.84
10691 T1
11.000
1 0.9296 10.226
10692 T2
11.000
1 0.9296 10.226
10752 T2
11.000
1 0.9497 10.446
10781 T1
11.000
1 0.9390 10.329
10782 T2
11.000
1 0.9390 10.329
10803 T3
11.000
1 0.9385 10.324
11251 T2
11.000
1 0.9496 10.446
11253 T4
11.000
1 0.9496 10.446
11261 T1
11.000
1 0.9387 10.326
11301 T2
11.000
1 0.9172 10.090
11302 T3
11.000
1 0.9426 10.368
11402 T2
11.000
1 0.9333 10.266
11403 T3
11.000
1 0.9472 10.419
11404 T4
11.000
1 0.9354 10.290
11405 T5
11.000
1 0.9419 10.361
11421 T1
11.000
1 0.9251 10.176
11442 T2
11.000
1 0.9121 10.033
11601 T1
11.000
1 0.9490 10.439
11731 T1
11.000
1 0.9392 10.331
11732 T2
11.000
1 0.9392 10.331
11803 T3
11.000
1 0.9262 10.189
11821 T1
11.000
1 0.9478 10.426
11852 T2
11.000
1 0.9291 10.220
12452 T2
11.000
1 0.9340 10.274
12501 T1
11.000
10 0.9105 10.016
504760-01-A4
1 0.9226 121.78
1142 K.KHELA
132.00
132.00
1 0.9172 121.07
1146 SHANGLAP
132.00
1 0.9190 121.31
132.00
10 0.9299 122.75
1255 KHYBER AGENC132.00
10 0.9362 123.58
92
1 0.9260 122.23
Disco Transmission Expansion Plan
National Power System Expansion Plan
12502 T2
11.000
10 0.9105 10.016
12503 T3
11.000
1 0.9105 10.016
12551 T1
11.000
10 0.9418 10.360
12552 T2
11.000
10 0.9418 10.360
12573 T3
11.000
1 0.9347 10.281
12602 T2
11.000
1 0.9484 10.432
12604 T4
11.000
1 0.9185 10.103
12701 T1
11.000
1 0.9424 10.367
12702 T2
11.000
1 0.9313 10.244
13021 T1
11.000
1 0.9227 10.150
13061 T1
11.000
1 0.9184 10.103
13062 T2
11.000
1 0.9184 10.102
13072 T2
11.000
1 0.9497 10.447
13091 T1
11.000
10 0.9223 10.146
13121 T1
11.000
1 0.9264 10.190
13122 T2
11.000
1 0.9264 10.190
13151 T2
11.000
1 0.9060
9.967
13152 T3
11.000
1 0.9060
13171 T1
11.000
10 0.9314 10.246
13321 T1
11.000
1 0.9359 10.295
13322 T2
11.000
1 0.9359 10.295
13351 T1
11.000
1 0.9397 10.337
13352 T2
11.000
1 0.9227 10.150
13361 T1
11.000
1 0.9399 10.338
13401 T3
11.000
1 0.9331 10.264
13402 T4
11.000
1 0.9206 10.127
13403 T5
11.000
1 0.9268 10.195
13451 T1
11.000
13452 T2
11.000
1 0.9220 10.143
13461 T1
11.000
10 0.8594
9.453
13462 T2
11.000
10 0.8471
9.318
13463 T3
11.000
10 0.8471
9.318
13502 T1
11.000
10 0.9117 10.028
13503 T2
11.000
10 0.8853
9.738
13504 T3
11.000
10 0.9117 10.028
13511 T1
11.000
10 0.9258 10.184
13512 T2
11.000
10 0.9277 10.205
13551 T3
11.000
10 0.8995
13601 T1
11.000
1 0.9425 10.368
13602 T2
11.000
1 0.9400 10.340
13651 T1
11.000
1 0.9373 10.311
13652 T2
11.000
1 0.9318 10.249
13702 T2
11.000
1 0.9341 10.275
13751 T1
11.000
1 0.9274 10.201
13801 T1
11.000
1 0.9428 10.371
13802 T2
11.000
1 0.9475 10.422
13851 T1
11.000
1 0.9400 10.340
13852 T2
11.000
1 0.9400 10.340
13901 T1
11.000
1 0.9265 10.192
13902 T2
11.000
1 0.9341 10.275
13941 T1
11.000
1 0.9271 10.198
13942 T2
11.000
1 0.9271 10.198
13952 T2
11.000
1 0.9133 10.047
14001 T1
11.000
1 0.9285 10.213
14102 T4
11.000
1 0.9341 10.276
14103 T3
11.000
1 0.9465 10.411
14151 T1
11.000
1 0.9384 10.323
14152 T2
11.000
1 0.9384 10.322
14201 T1
11.000
1 0.9420 10.362
14202 T2
11.000
1 0.9455 10.401
14203 T3
11.000
1 0.9352 10.287
14204 T4
11.000
1 0.9300 10.230
14251 T1
11.000
1 0.9302 10.232
14252 T2
11.000
1 0.9244 10.169
14502 T2
11.000
1 0.9409 10.350
14551 T1
11.000
1 0.9488 10.437
14601 T4
11.000
1 0.9491 10.440
14602 T6
11.000
15351 T1
11.000
10 0.9051
9.956
15352 T2
11.000
10 0.9051
9.956
16021 T1
11.000
1 0.9080
9.988
16022 T2
11.000
1 0.9080
9.988
16051 T1
11.000
10 0.9327 10.259
16702 T2
11.000
1 0.9306 10.237
16751 T1
11.000
1 0.9259 10.185
16861 T1
11.000
10 0.9313 10.244
16862 T2
11.000
10 0.9072
9.979
17501 T1
11.000
10 0.9003
9.904
17551 T1
11.000
10 0.7928
8.720
17552 T2
11.000
10 0.7928
8.720
17751 T1
11.000
10 0.7881
8.670
17752 T2
11.000
10 0.7881
8.670
17753 T3
11.000
10 0.7881
8.670
17901 T1
11.000
1 0.8529
9.382
17902 T2
11.000
1 0.8630
9.493
18301 T1
11.000
1 0.9101 10.011
18701 T1
11.000
1 0.9339 10.273
18901 T1
11.000
1 0.9331 10.265
19001 T1
11.000
1 0.7660
8.426
19002 T2
11.000
1 0.7445
20151 T1
11.000
1 0.9150 10.065
20152 T2
11.000
1 0.9299 10.229
20153 T4
11.000
1 0.9132 10.045
50151 T1
11.000
1 0.9050
50152 T2
11.000
1 0.9234 10.157
74203 T3
11.000
1 0.9472 10.419
9.967
1 0.9107 10.018
9.894
1 0.9491 10.440
8.190
9.955
--------------------------------------------------------------------------------
504760-01-A4
93
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Some overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
PESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
1080 SWABI
132.00*
1
10803 T3
11.000
1
1
26.5
26.0
101.8
1090 CHARSADA
132.00*
1
10902 T2
11.000
1
1
27.3
26.0
104.9
1130 CHAKDARA
132.00*
1
11301 T2
11.000
1
1
27.3
26.0
104.8
1130 CHAKDARA
132.00*
1
11302 T3
11.000
1
1
27.5
26.0
105.6
1185 PESH CTY
132.00*
1
11851 T1
11.000
1
1
40.1
40.0
100.2
1185 PESH CTY
132.00*
1
11852 T2
11.000
1
1
42.0
40.0
105.1
1185 PESH CTY
132.00*
1
11853 T3
11.000
1
1
41.5
40.0
103.8
1196 PESHFORT
132.00*
1
11961 T1
11.000
1
1
41.9
40.0
104.8
1196 PESHFORT
132.00*
1
11962 T2
11.000
1
1
41.4
40.0
103.5
1240 JAMRUD-I
132.00*
1
12401 T1
11.000
1
1
27.7
26.0
106.4
1240 JAMRUD-I
132.00*
1
12403 T3
11.000
1
1
26.9
26.0
103.6
1240 JAMRUD-I
132.00*
1
12404 T4
11.000
1
1
26.9
26.0
103.6
1257 R-BABA
132.00*
1
12571 T1
11.000
1
1
13.5
13.0
104.2
1257 R-BABA
132.00*
1
12572 T2
11.000
1
1
13.0
13.0
100.1
1257 R-BABA
132.00*
1
12573 T3
11.000
1
1
27.3
26.0
104.9
1270 PESH UNI
132.00*
1
12701 T1
11.000
1
1
43.4
40.0
108.5
1270 PESH UNI
132.00*
1
12702 T2
11.000
1
1
44.1
40.0
110.2
1280 PESH.IND
132.00*
1
12801 T1
11.000
1
1
42.1
40.0
105.2
1280 PESH.IND
132.00*
1
12802 T2
11.000
1
1
27.0
26.0
103.9
1280 PESH.IND
132.00*
1
12803 T3
11.000
1
1
42.8
40.0
107.1
1315 TALL
132.00
1
132.00*
10
1
118.4
112.0
105.7
1360 ABBOTABD
132.00*
1
13601 T1
11.000
1
1
29.9
26.0
114.8
1360 ABBOTABD
132.00*
1
13602 T2
11.000
1
1
30.2
26.0
116.0
1360 ABBOTABD
132.00*
1
13603 T3
11.000
1
1
27.4
26.0
105.3
1375 NATIAGLI
132.00*
1
13751 T1
11.000
1
1
27.7
26.0
106.6
1400 BALAKOT
132.00*
1
14001 T1
11.000
1
1
13.2
13.0
101.3
1418 T-HATTAR
132.00
1
1420 HATTAR
132.00*
1
1
115.5
112.0
103.2
1418 T-HATTAR
132.00*
1
2060 WAH NEW
132.00
2
1
112.9
112.0
100.8
1425 HATTAR-II
132.00*
1
14251 T1
11.000
1
1
28.2
26.0
108.6
1425 HATTAR-II
132.00*
1
14252 T2
11.000
1
1
26.3
26.0
101.0
1445 G.AMAZAI
132.00*
1
14452 T2
11.000
1
1
26.5
26.0
102.0
1675 WARAI
66.000*
1
16751 T1
11.000
1
1
13.1
13.0
101.1
2015 MUZAFBAD
132.00*
1
20152 T2
11.000
1
1
26.0
26.0
100.2
1755 SADDA
TESCO
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
504760-01-A4
AREA
BUS# X-- NAME --X BASKV
94
AREA CKT LOADING
RATING PERCENT
Disco Transmission Expansion Plan
National Power System Expansion Plan
1255 KHYBER AGENC132.00*
10
12551 T1
11.000
10
1
28.1
26.0
108.0
1255 KHYBER AGENC132.00*
10
12552 T2
11.000
10
1
28.1
26.0
108.0
1275 BARA
132.00*
10
12751 T1
11.000
10
1
27.3
26.0
104.8
1275 BARA
132.00*
10
12752 T2
11.000
10
1
27.3
26.0
104.8
1275 BARA
132.00*
10
12753 T3
11.000
10
1
27.1
26.0
104.4
1315 TALL
132.00
1
132.00*
10
1
118.4
112.0
105.7
1346 MIR ALI
132.00*
10
13461 T1
11.000
10
1
14.3
13.0
110.1
1346 MIR ALI
132.00*
10
13462 T2
11.000
10
1
29.6
26.0
113.9
1346 MIR ALI
132.00*
10
13463 T3
11.000
10
1
29.6
26.0
113.9
1755 SADDA
132.00*
10
17551 T1
11.000
10
1
26.9
26.0
103.3
1755 SADDA
132.00*
10
17552 T2
11.000
10
2
26.9
26.0
103.3
1755 SADDA
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
PESCO Reinforcements
New Grid Stations:
1. 132 KV Muzafar Abad G/S with 2x20/26 MVA T/Fs, from 132 KV Muzafar Abad
G/S length of line 2 KM.
2. 132 KV Jahgra G/S with 2x20/26 MVA T/Fs, In/Out from Peshawar City – Pabbi
line Length 6 KM.
3. 132 KV Shergarh G/S with 2x20/26 MVA T/Fs, In/Out form Mardan-II – Chakdara
line Length 2 KM.
4. 132 KV Khanpur G/S with 2x10/13 MVA T/Fs, SDT line form Haripur length 23
KM.
5. 132 KV Kabal G/S with 2x10/13 MVA T/Fs, In/Out from Barikot-Swat length 5
KM.
6. 132 KV Rustam G/S with 2x10/13 MVA T/Fs, In/Out form Hussai-Daggar.
7. 132 KV Shakardara with 1x10/13 MVA T/F, 24 KM SDT line from Lachi.
8. 132 KV Doaba with 2x10/13 MVA T/Fs, 35 KM SDT line form Hangu.
9. 132 KV Bara Road with 1x40 and 1x20/26 MVA T/Fs, 7 KM In/Out form
S.Muhammadi-Hayat Abad.
504760-01-A4
95
Disco Transmission Expansion Plan
National Power System Expansion Plan
10. 132 KV Kurram Garhi with 2x10/13 MVA T/Fs, 7 KM SDT line from Bannu.
Augmentations:
1. 20/26 MVA T/F T-1 by 40 MVA at 132 KV Charsadda G/S.
2. 20/26 MVA T/F T-1 by 40 MVA at 132 KV Peshawar Cant G/S.
3. 20/26 MVA T/F T-2 by 40 MVA at 132 KV Peshawar Industrial G/S.
4. 20/26 MVA T/F T-3 by 40 MVA at 132 KV Jamrud G/S.
5. 13 MVA T/F T-1 by 40 MVA at 132 KV Rahman Baba G/S.
6. 10/13 MVA T/F T-1 by 20/26 MVA at 132 KV Balakot G/S.
7. 20/26 MVA T/F T-1 by 40 MVA at 132 KV Hattar-II G/S.
8. 20/26 MVA T/F T-1 by 40 MVA at 132 KV Gadoon Amazai G/S.
Extensions:
1. Extension with 20/26 MVA T/F at 132 KV Chakdara G/S.
2. Extension with 40 MVA at 132 KV Abbottabad G/S.
132 kV Capacitors:
1. 24 MVAR Caps at 132 KV Hangu G/S.
11 kV Capacitors:
1. Additional Caps 3.6 MVAR at T-3, 132 KV Swabi G/S.
2. Additional Caps 2.4 MVAR at T-1, 132 KV Shangla G/S.
3. 7.2 MVAR Caps at T-1, 132 KV Nathiagali G/S.
4. 7.2 MVAR Caps at T-1, 132 KV Wari G/S.
5. 2.8 MVAR Caps at T-3, 132 K Peshawar University G/S.
504760-01-A4
96
Disco Transmission Expansion Plan
National Power System Expansion Plan
Up-Grading of G/S:
1. Up-gradating of 66 KV Wari to 132 KV with 1x20/26 MVA T/F, In/Out line from
Timergar-Dir line.
2. Up-gradating of 33 KV Hattian to 132 KV with 1x10/13 MVA T/F, 35 KM SDT line
from Muzafarabad.
New T/ Lines:
1. New Wah – Hattar 15 KM SDT line with Rail conductor
TESCO Reinforcements
Augmentations:
1. Aug: of 10/13 MVA T/F T-1 by 20/26 MVA at 132 KV Mir Ali G/S.
2. Aug: of 20/26 MVA T/F T-1 by 40 MVA at 132 KV Bara G/S.
3. Aug: of 20/26 MVA T/F T-1 by 40 MVA at 132 KV Landi Kotal G/S.
Extensions:
1. Extension with 20/26 MVA T/F at 132 KV Sadda G/S.
2. Extension with 20/26 MVA T/F at 132 KV Ghalanai G/S.
3. Extension with 20/26 MVA T/F at 132 KV Khyber Agency G/S.
11 kV Capacitors:
1. 7.2 MVAR Caps at T-3, 132 KV Sadda G/S.
2. 7.2 MVAR Caps at T-5, 132 KV Ghalanai G/S.
3. 7.2 MVAR Caps at T-3, 132 KV Khyber Agency G/S.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Some low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 3
<-------- B U S -------->
1080 SWABI
132.00
0.89091
0.97751
1.10000
0.90000
SINGLE 108
1460 TANK
132.00
0.72427
0.98076
1.10000
0.90000
SINGLE 108
1461 GOMAL-ZM
132.00
0.70705
0.97792
1.10000
0.90000
SINGLE 108
1465 WANA
132.00
0.66525
0.95640
1.10000
0.90000
SINGLE 108
1840 TANK-1
66.000
0.72972
1.01376
1.10000
0.90000
SINGLE 108
1850 JANDOLA
66.000
0.64173
0.96561
1.10000
0.90000
SINGLE 108
1870 KULACHI
66.000
0.86816
0.96508
1.10000
0.90000
SINGLE 108
1872 T-KULCHI
66.000
0.88464
0.97924
1.10000
0.90000
SINGLE 108
1880 DARABAN
66.000
0.84664
0.95029
1.10000
0.90000
SINGLE 147
1309 GHILJO
66.000
0.89602
1.03553
1.10000
0.90000
SINGLE 147
1316 TALL
66.000
0.88645
1.04561
1.10000
0.90000
SINGLE 147
1750 ALIZAI
66.000
0.85280
1.02524
1.10000
0.90000
SINGLE 156
1345 S.NURANG
132.00
0.88450
1.01515
1.10000
0.90000
SINGLE 165
1344 T-MIRALI
132.00
0.86420
1.01155
1.10000
0.90000
SINGLE 165
1346 MIR ALI
132.00
0.85168
1.00497
1.10000
0.90000
SINGLE 165
1351 DATAKHEL
132.00
0.89417
0.99984
1.10000
0.90000
SINGLE 165
1355 RAZMAK
132.00
0.89342
0.99828
1.10000
0.90000
SINGLE 214
1465 WANA
132.00
0.87523
0.95640
1.10000
0.90000
SINGLE 225
1755 SADDA TESCO 132.00
1.10910
1.01015
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 3
: OPEN LINE FROM BUS 1069 [DOBIAN
132.00] TO BUS 1080 [SWABI
132.00] CKT 1
SINGLE 108
: OPEN LINE FROM BUS 1261 [DI.KHN-N
132.00] TO BUS 1460 [TANK
132.00] CKT 1
SINGLE 147
: OPEN LINE FROM BUS 1315 [TALL
132.00] TO BUS 1316 [TALL
66.000] CKT 1
SINGLE 156
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1345 [S.NURANG
132.00] CKT 1
SINGLE 165
: OPEN LINE FROM BUS 1342 [BANNU-II
132.00] TO BUS 1344 [T-MIRALI
132.00] CKT 1
SINGLE 214
: OPEN LINE FROM BUS 1461 [GOMAL-ZM
132.00] TO BUS 1465 [WANA
132.00] CKT 1
SINGLE 225
: OPEN LINE FROM BUS 1755 [SADDA TESCO 132.00] TO BUS 1775 [PARACINA
132.00] CKT 1
--------------------------------------------------------------------------------
504760-01-A4
98
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
A few marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
1440*TARBELA-R
132.00
1442 GHAZI-IS
132.00 1
SINGLE 3
112.0
119.5
116.3
%
1069*DOBIAN
132.00
1070 MARDAN
132.00 1
SINGLE 5
112.0
132.9
119.0
1069 DOBIAN
132.00
1072*HUSSAI
132.00 1
SINGLE 5
112.0
117.2
108.0
1291*SHMUHDI-1
132.00
1294 MATANI
132.00 3
SINGLE 107
112.0
128.1
109.6
1460*TANK
132.00
7430 D.I.KHAN
132.00 1
SINGLE 108
112.0
96.7
119.2
1332*BANNU-N
132.00
1340 BANNU
132.00 2
SINGLE 153
112.0
120.4
103.2
1332*BANNU-N
132.00
1340 BANNU
132.00 3
SINGLE 153
112.0
120.4
103.2
1332*BANNU-N
132.00
1340 BANNU
132.00 1
SINGLE 154
112.0
120.4
103.2
1332*BANNU-N
132.00
1340 BANNU
132.00 3
SINGLE 154
112.0
120.4
103.2
1332*BANNU-N
132.00
1340 BANNU
132.00 1
SINGLE 155
112.0
120.4
103.2
1332*BANNU-N
132.00
1340 BANNU
132.00 2
SINGLE 155
112.0
120.4
103.2
1440*TARBELA-R
132.00
1442 GHAZI-IS
132.00 1
SINGLE 204
112.0
116.7
106.9
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 3
: OPEN LINE FROM BUS 1069 [DOBIAN
132.00] TO BUS 1080 [SWABI
132.00] CKT 1
SINGLE 5
: OPEN LINE FROM BUS 1070 [MARDAN
132.00] TO BUS 1074 [MARDANII
132.00] CKT 1
SINGLE 107
: OPEN LINE FROM BUS 1257 [R-BABA
132.00] TO BUS 1291 [SHMUHDI-1
132.00] CKT 1
SINGLE 108
: OPEN LINE FROM BUS 1261 [DI.KHN-N
132.00] TO BUS 1460 [TANK
132.00] CKT 1
SINGLE 153
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1340 [BANNU
132.00] CKT 1
SINGLE 154
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1340 [BANNU
132.00] CKT 2
SINGLE 155
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1340 [BANNU
132.00] CKT 3
SINGLE 204
: OPEN LINE FROM BUS 1442 [GHAZI-IS
132.00] TO BUS 1450 [TARBELA-N
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
PESCO Reinforcements
11 kV Capacitors:
1. Additional 6.6 MVAR Caps at T-1, 132 KV Rahman Baba.
T/ Lines:
1. Re-conducting of Mardan-Dobian line with Greeley conductor length 13.6 KM.
2. New SDT line Dobian-Hussai with Lynx length 12 KM.
504760-01-A4
99
Disco Transmission Expansion Plan
National Power System Expansion Plan
3. New SDT line Chohta Lahor-Swabi with Lynx length 12 KM.
4. New D/C line D.I.Khan-Pezu with Rail length 40 KM.
5. New D/C line Pezu-Tank with Rail length 30 KM.
6. Re-Conducting of 220/132 KV Bannu – Bannu Ckt-1 & 3 with Greeley length 16
KM each.
TESCO Reinforcements
Up-Grading of G/S:
1. Up Gradation of 66 KV Ghiljo to 132 KV with 1x10/13 MVA T/F, feed from 132
KV Tall with lynx length 24 KM.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed PESCO and TESCO base
case for Year-2018 with the above mentioned system reinforcements are given in
Appendix-5 (spread over 9 Sheets).
7.1.19 “IESCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of IESCO by Year-2018 is 3,738 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the IESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
504760-01-A4
100
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few overloading problems was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
210 BURHAN
220.00*
15
2020 BURHAN
132.00
2
1
491.0
480.0
102.3
212 TAXILA
220.00*
15
2100 TAXILA
132.00
2
1
525.0
500.0
105.0
215 IBD.P.RD
220.00*
15
2025 SANGJANI
132.00
2
1
531.9
480.0
110.8
220 REWAT-N
220.00*
15
2300 REWAT NEW
132.00
2
2
240.6
160.0
150.4
Note: 220/132kv Power Transformers relate to NTDC.
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), system reinforcements including new
grid stations and augmentations were added as follows.
List of New 132KV Grid Station (2018) added
504760-01-A4
Name of 132 kV GS
Sr No.
Bus #
1
2136
Chakri Road
2x 20/26
2
2037
GHQ E‐10
2x 20/26
3
2259
Blue Area G‐9
2x 20/26
4
5
6
7
8
9
2028
2252
2137
2261
2036
2038
F‐16/G‐15
Blue Area G‐8
F.J. W.University
Simly Road
F‐12
I‐11
2x 20/26
2x 20/26
2x 20/26
2x 20/26
2x 20/26
2x 20/26
101
Scope
Disco Transmission Expansion Plan
National Power System Expansion Plan
Reinforcement required for 2018 N-0 Case
Name of 132 kV Grid Station
Bus #
Existing Capacity (MVA)
13
Proposed Capacity (MVA)
26
21702
Kahuta City T‐2
23201
Jatli T‐1
13
26
23202
Jatli T‐2
13
26
21691
Bahria Town Ph‐8
26
40
Remark
Consumer GS
Also, 11 kV capacitor banks of different ratings were added at 95 grid stations.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Some voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 185
2166 CHAINTBATIAN132.00
0.83628
1.00977
1.10000
0.90000
SINGLE 185
2170 KHUTACTY
132.00
0.83628
1.00977
1.10000
0.90000
SINGLE 185
2180 AZADPATN
132.00
0.87089
1.00830
1.10000
0.90000
SINGLE 185
2519 MANG
33.000
0.83519
1.00604
1.10000
0.90000
SINGLE 185
2925 AZADPATN
33.000
0.84774
1.01420
1.10000
0.90000
SINGLE 185
2930 PALANDRI
132.00
0.89400
1.00856
1.10000
0.90000
SINGLE 185
21661 T-1
11.000
0.82605
1.01809
1.10000
0.90000
SINGLE 185
21662 T-2
11.000
0.82605
1.01809
1.10000
0.90000
SINGLE 185
21701 T-1
11.000
0.76092
0.96055
1.10000
0.90000
SINGLE 185
21702 T-2
11.000
0.80158
0.99109
1.10000
0.90000
SINGLE 185
25191 T-1
11.000
0.81505
0.99655
1.10000
0.90000
SINGLE 185
25192 T-2
11.000
0.81737
0.99838
1.10000
0.90000
SINGLE 185
29301 T-1
11.000
0.87777
0.99912
1.10000
0.90000
SINGLE 185
29302 T-2
11.000
0.87777
0.99912
1.10000
0.90000
66.000
1.12907
1.04181
1.10000
0.90000
SINGLE 467
2782 GARIBWAL
CONTINGENCY LEGEND:
--------------------------------------------------------------------------------
504760-01-A4
102
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
2060*WAH NEW
132.00
2100 TAXILA
132.00 1
SINGLE 102
112.0
115.6
100.3
%
2060*WAH NEW
132.00
2100 TAXILA
132.00 1
SINGLE 103
112.0
115.6
100.3
CONTINGENCY LEGEND:
SINGLE 102
: OPEN LINE FROM BUS 2060 [WAH NEW
132.00] TO BUS 2100 [TAXILA
132.00] CKT 2
SINGLE 103
: OPEN LINE FROM BUS 2060 [WAH NEW
132.00] TO BUS 2100 [TAXILA
132.00] CKT 3
--------------------------------------------------------------------------------
To overcome these (N-1) violations, one transmission line was reconfigured as follows.
1. Reconductoring of132kV Transmission Lines From New Wah – Taxila (Circuit-1)
Lynx to Greely (9 KM)
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed IESCO base case for Year2018 with the above mentioned system reinforcements are shown in Appendix-5 (spread
over 9 Sheets).
7.1.20 “GEPCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of GEPCO by Year-2018 is 2,945 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the GEPCO system.
504760-01-A4
103
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few marginal overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
3004 KHARIAN
132.00*
3
30041 T1
11.000
3
1
28.0
26.0
107.6
3004 KHARIAN
132.00*
3
30042 T2
11.000
3
1
27.0
26.0
103.7
3004 KHARIAN
132.00*
3
30043 T3
11.000
3
1
13.3
13.0
102.4
3016 GUJRAT-2
132.00*
3
30161 T1
11.000
3
1
26.5
26.0
102.0
3016 GUJRAT-2
132.00*
3
30162 T2
11.000
3
1
26.7
26.0
102.6
3016 GUJRAT-2
132.00*
3
30163 T3
11.000
3
1
26.7
26.0
102.7
--------------------------------------------------------------------------------
Two network reinforcements were added to the GEPCO system by Year-2018 to meet
the planning criteria under (N-0) conditions.
1. Augmentation of one 13 MVA power transformer with 26 MVA at 132 kV Kharian
grid station
2. Augmentation of one 26 MVA power transformer with 40 MVA at 132 kV Gurat-2
grid station
504760-01-A4
104
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
No line overloading problems were recorded based on 100% of rating A.
The updated load flow single line diagrams for developed GEPCO base case for Year2018 with the above mentioned system reinforcements are shown in Appendix-5 (spread
over 5 Sheets).
7.1.21 “LESCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of LESCO by Year-2018 is 5,905 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the LESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
* NONE *
--------------------------------------------------------------------------------
504760-01-A4
105
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Two overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
4162 SRFZNGR
132.00*
4
41621 S.NGR T-1
11.000
4
1
30.9
26.0
119.0
4162 SRFZNGR
132.00*
4
41622 S.NGR T-2
11.000
4
1
28.0
26.0
107.5
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), one some system reinforcement was
added to solve the (N-0) violations as given below.
•
Augmentation of 2x132kV, 26 MVA Transformers with 40 MVA capacity at
Sarfraz Nager grid station.
With the above addition, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
No line overloading problems were recorded based on 100% of rating A.
The updated load flow single line diagrams for developed LESCO base case for Year2018 with the above mentioned system reinforcements are shown in Appendix-5 (spread
over 9 Sheets).
504760-01-A4
106
Disco Transmission Expansion Plan
National Power System Expansion Plan
7.1.22 “FESCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of FESCO by Year-2018 is 3,974 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], some voltage problems were recorded
within the FESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
4475 GOJRA-2
66.000
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
5 1.0553 69.647
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
5220 MANKERA
V(PU)
V(KV)
66.000
5 0.9064 59.821
42901 T1
11.000
5 0.9443 10.387
44721 T1
11.000
5 0.9469 10.416
50441 T1
11.000
51101 T1
66.000
5 0.8896 58.712
42902 T2
11.000
5 0.9443 10.387
50203 T3
11.000
5 0.9483 10.432
5 0.9309 10.240
50442 T2
11.000
5 0.9309 10.240
11.000
5 0.9201 10.121
52201 T1
11.000
5 0.8740
52301 T1
11.000
5 0.8896
54401 T1
11.000
5 0.9431 10.374
56302 T2
11.000
5 0.9430 10.373
9.786
5230 HYD.THAL
9.614
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
360 LUDEWALA
AREA
220.00*
15
4290 BHOWANA
132.00*
5
4290 BHOWANA
132.00*
4380 FBD-TH-O
4460 SMNDRIRD
504760-01-A4
BUS# X-- NAME --X BASKV
5419 LUDWLA-N
AREA CKT LOADING
RATING PERCENT
132.00
5
1
565.4
480.0
117.8
42901 T1
11.000
5
1
27.2
26.0
104.8
5
42902 T2
11.000
5
1
27.2
26.0
104.8
132.00*
5
43803 T3
11.000
5
1
26.1
26.0
100.3
132.00*
5
44601 T1
11.000
5
1
42.1
40.0
105.2
107
Disco Transmission Expansion Plan
National Power System Expansion Plan
4470 GOJRA
132.00*
5
44701 T1
11.000
5
1
40.1
40.0
100.3
4472 SAMMDRI
132.00*
5
44721 T1
11.000
5
1
41.5
40.0
103.8
4478 T.T.SING
132.00*
5
44781 T3
11.000
5
1
26.5
26.0
102.0
4478 T.T.SING
132.00*
5
44782 T4
11.000
5
1
29.0
26.0
111.7
4482 PIRMEHL
132.00*
5
44821 T1
11.000
5
1
29.8
26.0
114.7
4490 JHANG
132.00*
5
44901 T1
11.000
5
1
42.9
40.0
107.3
4490 JHANG
132.00*
5
44902 T2
11.000
5
1
40.1
40.0
100.2
4490 JHANG
132.00*
5
44903 T3
11.000
5
1
42.2
40.0
105.5
4498 SHORK-RD
132.00*
5
44981 T1
11.000
5
1
22.5
13.0
173.0
4555 C.RAJANA
132.00*
5
45551 T1
11.000
5
1
13.8
13.0
105.9
4555 C.RAJANA
132.00*
5
45552 T2
11.000
5
1
13.8
13.0
105.9
5220 MANKERA
66.000*
5
52201 T1
11.000
5
1
14.1
13.0
108.8
5420 LUDEWALA
132.00*
5
54201 T3
11.000
5
1
14.1
13.0
108.6
5440 BHAMB
132.00*
5
54402 T2
11.000
5
1
40.6
40.0
101.5
5445 SARGODAC
132.00*
5
54452 T2
11.000
5
1
40.2
40.0
100.5
7005 SHORKCTY
132.00*
5
70051 T1
11.000
5
1
27.4
26.0
105.2
7455 BHAKKAR
132.00
5
132.00*
6
1
172.6
112.0
154.1
7456 CHOKAZAM
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Sr.No.
KV
Grid Station
1
132
Shorkot City
2
132
3
4
5
6
7
8
9
10
11
132
132
132
132
132
66
66
66
66
12
66
13
14
66
132
15
132
Rinforcement Required
Augmentation 10/13 MVA T/F with 20/26 MVA
Augmentation 20/26 MVA T/F with 31.5/40 MVA to shift Samandri
total load of 66 KV Samandri
Jhang City
Extension of 31.5/40 MVA T/F.
Pir Mehal
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Bhowana
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Chowk Rajana Augmentation 10/13 MVA T/F with 20/26 MVA
Barana
Augmentation 10/13 MVA T/F with 20/26 MVA
Mankera
Conversion from 66 KV Mankera to 132 KV Mankera
Hyd. abad Thal Conversion from 66 KV Hyd. Thal to 132 KV Hyd.Thal
Kalabag
Conversion from 66 KV Kalabag to 132 KV Kalabag
Makerwal
Conversion from 66 KV Makerwal to 132 KV Makerwal
Conversion from 66 KV Ahmed Pur Sial to 132 KV Ahmed Ahmed pur Sial
Pur Sail
Nia Lahore
Conversion from 66 KV Nia Lahore to 132 KV Nia Lahore
Old Thermal
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Extension of 20/26 MVA T/F to shift total load of 66 KV Shorkot Road
Chutiana
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
504760-01-A4
108
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-1) Results
Severe Outage Cases:
Two severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 197
: OPEN LINE FROM BUS 5419 [LUDWLA-N
132.00] TO BUS 5476 [T-BHERA
132.00] CKT 1
SINGLE 226
: OPEN LINE FROM BUS 5476 [T-BHERA
132.00] TO BUS 5480 [H.FAQIRN
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
Some low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 6
<-------- B U S -------->
4306 SCARP
132.00
0.89895
1.02448
1.10000
0.90000
SINGLE 161
5240 ADHIKOT
66.000
0.89559
0.99189
1.10000
0.90000
SINGLE 188
5402 T-SHAHPUR
132.00
0.87730
1.02324
1.10000
0.90000
SINGLE 188
5403 SHAHPUR
132.00
0.86381
1.01235
1.10000
0.90000
SINGLE 188
5423 T-FLYING CEM132.00
0.88993
1.01338
1.10000
0.90000
SINGLE 188
5424 FLYING CEM
132.00
0.88993
1.01338
1.10000
0.90000
SINGLE 198
5630 BARANA
132.00
0.89993
0.95587
1.10000
0.90000
SINGLE 204
5440 BHAMB
132.00
0.89598
0.99019
1.10000
0.90000
SINGLE 204
5443 KOTSHAKR
132.00
0.89002
0.98562
1.10000
0.90000
SINGLE 204
5444 JAMALI BALOO132.00
0.88488
0.98163
1.10000
0.90000
SINGLE 207
5450 SGD2
132.00
0.89967
1.00278
1.10000
0.90000
SINGLE 207
5452 SIAL.IND
132.00
0.89691
1.00086
1.10000
0.90000
SINGLE 207
5453 PATHAN KOT
132.00
0.87819
0.98587
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 6
: OPEN LINE FROM BUS 4305 [T-SCARP
132.00] TO BUS 4330 [NSHTBD-1
132.00] CKT 1
SINGLE 188
: OPEN LINE FROM BUS 5402 [T-SHAHPUR
132.00] TO BUS 5419 [LUDWLA-N
132.00] CKT 1
SINGLE 198
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5425 [KIRANAHL
132.00] CKT 1
SINGLE 204
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5440 [BHAMB
132.00] CKT 1
SINGLE 207
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5450 [SGD2
132.00] CKT 1
--------------------------------------------------------------------------------
504760-01-A4
109
Disco Transmission Expansion Plan
National Power System Expansion Plan
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
5420 LUDEWALA
132.00
5450*SGD2
132.00 1
SINGLE 12
114.0
113.4
103.2
%
5420 LUDEWALA
132.00
5425*KIRANAHL
132.00 1
SINGLE 19
112.0
120.4
110.0
4305*T-SCARP
132.00
4330 NSHTBD-1
132.00 1
SINGLE 22
114.0
122.1
104.2
4330 NSHTBD-1
132.00
4410*CHINOIT ROAD132.00 1
SINGLE 35
184.0
262.1
141.2
4330 NSHTBD-1
132.00
4395*T-CHKJMR
132.00 1
SINGLE 36
184.0
256.0
135.7
4395 T-CHKJMR
132.00
4396*FDC-1 CITY
132.00 1
SINGLE 36
184.0
206.8
111.7
4396 FDC-1 CITY
132.00
4410*CHINOIT ROAD132.00 1
SINGLE 36
184.0
200.2
108.5
4330 NSHTBD-1
132.00
4410*CHINOIT ROAD132.00 1
SINGLE 56
184.0
222.4
119.2
4330 NSHTBD-1
132.00
4410*CHINOIT ROAD132.00 1
SINGLE 58
184.0
217.3
116.4
4471 T-HBSHAH
132.00
4490*JHANG
132.00 1
SINGLE 109
112.0
118.6
107.1
4324 HUSTKHWA
132.00
5451*126-SBPL
132.00 1
SINGLE 207
114.0
113.7
107.1
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 6
: OPEN LINE FROM BUS 4305 [T-SCARP
132.00] TO BUS 4330 [NSHTBD-1
132.00] CKT 1
SINGLE 19
: OPEN LINE FROM BUS 4320 [CHNIOT-I
132.00] TO BUS 5425 [KIRANAHL
132.00] CKT 1
SINGLE 22
: OPEN LINE FROM BUS 4325 [C.103RB
132.00] TO BUS 4330 [NSHTBD-1
132.00] CKT 1
SINGLE 35
: OPEN LINE FROM BUS 4330 [NSHTBD-1
132.00] TO BUS 4395 [T-CHKJMR
132.00] CKT 1
SINGLE 36
: OPEN LINE FROM BUS 4330 [NSHTBD-1
132.00] TO BUS 4410 [CHINOIT ROAD132.00] CKT 1
SINGLE 56
: OPEN LINE FROM BUS 4395 [T-CHKJMR
132.00] TO BUS 4396 [FDC-1 CITY
132.00] CKT 1
SINGLE 109
: OPEN LINE FROM BUS 4477 [TTSINGHN
132.00] TO BUS 4490 [JHANG
132.00] CKT 1
SINGLE 207
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5450 [SGD2
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, two system additions were considered as follows.
Sr.No. Rinforcement Required
1
2
In/out arrangement for 132 KV Sargodha‐2 from double cct. Rail proposed Ludewala to 132 KVChinoit Industrial
New Double Cct on Rail from 220 KV Nishatabad to 132 Chinoit Road
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
504760-01-A4
110
Disco Transmission Expansion Plan
National Power System Expansion Plan
The updated load flow single line diagrams for developed FESCO base case for Year2018 with the above mentioned system reinforcements are shown in Appendix-5 (spread
over 6 Sheets).
7.1.23 “MEPCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of MEPCO by Year-2018 is 4,432 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], many low voltage problems were
recorded within the MEPCO system as given below.
As mentioned in the MEPCO-2015 and 2016 analyses, the upper voltage limit for
MEPCO system was set to 1.08 pu instead of 1.05 pu due to the radial nature of the
system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
70321 MP PAHOR T-111.000
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6 1.0896 11.986
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6120 PAKPATAN
132.00
6 0.9343 123.33
6121 MALK-TRU
_1132.00
6 0.9360 123.55
6210 SAHUKA
132.00
6 0.9421 124.35
6500 HAROON ABAD 132.00
6 0.9349 123.40
6512 FAQIRWLI
132.00
6 0.9179 121.16
6513 T FAQ WALI
132.00
6 0.9186 121.26
6521 FORTABAS
132.00
6 0.9072 119.75
7055 T-C.211
132.00
6 0.9423 124.39
7060 CHAK.211
132.00
6 0.9393 123.99
7070 MAILSI
132.00
6 0.9349 123.41
7115 MIRAN PUR
132.00
6 0.9428 124.45
7120 LODHRAN
132.00
6 0.9444 124.66
7147 KARORPCA
132.00
6 0.9366 123.64
7149 DUNYAPUR
_1132.00
6 0.9366 123.64
7170 AHMDPR.E
132.00
6 0.9232 121.86
7180 FEROZA
132.00
6 0.8334 110.00
7185 KHANBELA
132.00
6 0.8148 107.55
7288 SHUJABAD
132.00
6 0.8840 116.69
7289 JALALPWL
132.00
6 0.8241 108.79
7340 MEHRKHAS
132.00
6 0.9304 122.81
7350 DMR WALA
132.00
6 0.9176 121.12
7360 JATOIJNB
132.00
6 0.9029 119.19
7370 KHRPRSDT
132.00
6 0.9029 119.19
7784 H RAJKAN
132.00
6 0.9080 119.86
7792 MAROOT
132.00
6 0.9385 123.88
7974 UCH.SHRF
132.00
6 0.8967 118.36
7981 ALI PUR
132.00
6 0.8883 117.26
60901 SAHWAL-O T-111.000
6 0.9493 10.442
61002 NOORPUR T-2 11.000
6 0.9480 10.428
61201 PAKPATAN T-111.000
6 0.9436 10.380
61202 PAKPATAN T-211.000
6 0.9446 10.390
61302 HARAPPA T-2 11.000
6 0.9269 10.196
504760-01-A4
111
Disco Transmission Expansion Plan
National Power System Expansion Plan
61621 BREWLA-O T-111.000
6 0.8840
61622 BREWLA-O T-211.000
6 0.9409 10.350
61652 BURW III T-211.000
6 0.9362 10.298
9.723
61752 LUDDEN T-2
11.000
6 0.9290 10.220
61781 KARAMPUR T-111.000
6 0.9260 10.186
61782 KARAMPUR T-211.000
6 0.9409 10.350
61822 KAMIR W T-2 11.000
6 0.9448 10.393
62001 QABULA T-1
11.000
6 0.9436 10.380
62002 QABULA T-2
11.000
6 0.9290 10.219
62101
SAHUKA T-1 11.000
6 0.9277 10.204
62102 SAHUKA T-2
11.000
6 0.9072
62202 HASILPUR T-211.000
6 0.9160 10.076
9.979
62203 HASILPUR T-311.000
6 0.9349 10.284
62211 CHUNAW T-1
11.000
6 0.9164 10.080
64511 DAHRWALA T-111.000
6 0.9413 10.354
64512 DAHRAWLA T-211.000
6 0.9310 10.241
64622 NOORSAR T-2 11.000
6 0.9401 10.341
65013 HARONABD T-311.000
6 0.9128 10.041
65122 FAQIR W T-1 11.000
6 0.9226 10.149
65211 FORT ABB T-111.000
6 0.9085
70002 MIANCHNU T-211.000
6 0.9235 10.159
70003 MIANCHNU T-311.000
6 0.9099 10.009
70021 KASSOWAL T-111.000
6 0.9483 10.432
70022 KASOWAL T-2 11.000
6 0.9229 10.152
70101 KACHAKHU T-111.000
6 0.9070
9.977
70102 KACHAKHU T-211.000
6 0.9142 10.056
70303 KABIRWLA T-311.000
6 0.9052
9.957
70502 JEHANIAN T-211.000
6 0.9378 10.316
70503 JEHANIAN T-311.000
6 0.9372 10.309
70701 MAILSI T-1
11.000
6 0.9408 10.349
70702 MAILSI T-2
11.000
6 0.9251 10.176
70703 MAILSI T-3
11.000
6 0.9341 10.275
71101 BASTIMLK T-111.000
6 0.9450 10.395
71201 LODHRAN T-1 11.000
6 0.9218 10.140
71251 LART-1
11.000
6 0.9219 10.140
71401 BHAWALPR T-111.000
6 0.9370 10.307
71403 BHAWALPR T-311.000
6 0.9444 10.388
71471 KARORPCA T-111.000
6 0.9118 10.030
71472 KARORPCA T-211.000
6 0.9448 10.393
71491 DUNYAPUR T-311.000
6 0.9396 10.335
71492 DUNYAPUR T-411.000
6 0.9397 10.337
71501 SAMASATA T-111.000
6 0.8988
9.887
71702 AHMDPR.E T-211.000
6 0.9074
9.981
71703 AHMDPR.E T-311.000
6 0.9003
9.903
71801 FEROZA T-1
11.000
6 0.8554
9.410
71851 KHANBELA T-111.000
6 0.8481
9.329
71852 KHANBELA T-211.000
6 0.8509
9.360
72252 R.Y.KHN2 T-211.000
6 0.9478 10.425
72551 WAP TO T-1
6 0.8951
9.846
11.000
9.994
72552 WAPDA TO T-211.000
6 0.8945
72603 MN.BS.RD T-311.000
6 0.9486 10.435
72681 SRJ.M T-1
6 0.9485 10.433
72871 M.J RD T-1
11.000
11.000
9.840
6 0.9362 10.298
72881 SHUJABAD T-111.000
6 0.8680
9.548
72882 SHUJABAD T-211.000
6 0.8572
9.429
72891 JALALPWL T-111.000
6 0.8435
9.278
72892 JALALPWL T-211.000
6 0.8474
9.322
73281 KBGASHER T-111.000
6 0.9088
9.997
73601 JATOIJNB T-111.000
6 0.9336 10.270
73602 JATOIJNB T-211.000
6 0.9281 10.209
75901 SKHISRWR T-111.000
6 0.9469 10.416
77821 YAZMN T-1
11.000
6 0.9094 10.003
77842 H RAJKAN T-211.000
6 0.9089
9.998
77921 MAROOT T-1
11.000
6 0.9418 10.360
79423 UCH.SHRF T-111.000
6 0.8745
9.619
79741 UCH.SHRF T-211.000
6 0.8293
9.122
79742 UCH.SHRF T-311.000
6 0.8360
9.196
79811 ALI PUR T-1 11.000
6 0.8778
9.656
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
500 MULTAN
220.00*
15
6666 MULTAN-N
132.00
6
1
553.8
500.0
110.8
520 PIRNGHAB
220.00*
15
7100 P.GAIB-1
132.00
6
1
512.4
254.0
201.7
540 KAPCO220
220.00
15
7300 KAPCO
132.00*
6
1
508.4
400.0
127.1
6050 BNGAHYAT
132.00*
6
60501 BNGAHYAT T-111.000
6
1
14.1
13.0
108.5
6178 KARAMPUR
132.00*
6
61781 KARAMPUR T-111.000
6
1
14.8
13.0
113.8
504760-01-A4
112
Disco Transmission Expansion Plan
National Power System Expansion Plan
6178 KARAMPUR
132.00*
6
61782 KARAMPUR T-211.000
6
1
13.4
13.0
103.0
6190 BWL.NAGR
132.00*
6
61903 BWL.NAGR T-311.000
6
1
28.1
26.0
108.2
6221 CHUNAWALA
132.00*
6
62211 CHUNAW T-1
11.000
6
1
14.1
13.0
108.3
6451 DAHRANWALA
132.00*
6
64511 DAHRWALA T-111.000
6
1
13.5
13.0
103.7
6500 HAROON ABAD 132.00*
6
65012 HARONABD T-211.000
6
1
13.8
13.0
105.8
7000 MIANCHNU
132.00*
6
70002 MIANCHNU T-211.000
6
1
43.7
40.0
109.2
7000 MIANCHNU
132.00*
6
70003 MIANCHNU T-311.000
6
1
46.4
40.0
116.0
7002 KASSOWAL
132.00*
6
70022 KASOWAL T-2 11.000
6
1
27.6
26.0
106.0
7006 HEAD SIDHNAI132.00*
6
70061 H SIDNAI T-111.000
6
1
13.3
13.0
102.1
7010 KACHAKHU
132.00*
6
70101 KACHAKHU T-111.000
6
1
28.5
26.0
109.7
7010 KACHAKHU
132.00*
6
70102 KACHAKHU T-211.000
6
1
27.8
26.0
106.9
7020 KHANEWAL
132.00*
6
70202 KHANEWAL T-211.000
6
1
29.0
26.0
111.5
7040 GARHMORE
132.00*
6
70401 GARHMORE T-111.000
6
1
26.3
26.0
101.1
7050 JEHANIAN
132.00*
6
70502 JEHANIAN T-211.000
6
1
44.5
40.0
111.3
7075 MUKHDM.R
132.00*
6
70751 MUKHDM.R T-111.000
6
1
15.4
13.0
118.1
7075 MUKHDM.R
132.00*
6
70752 MUKHDM.R T-211.000
6
1
14.1
13.0
108.3
7130 BU.JADID
132.00*
6
71301 BU.JADID T-111.000
6
1
26.6
26.0
102.4
7130 BU.JADID
132.00*
6
71302 BU.JADID T-211.000
6
1
26.7
26.0
102.8
7147 KARORPCA
132.00*
6
71471 KARORPCA T-111.000
6
1
44.6
40.0
111.6
7149 DUNYAPUR
_1132.00*
6
71491 DUNYAPUR T-311.000
6
1
13.3
13.0
102.0
7170 AHMDPR.E
132.00*
6
71702 AHMDPR.E T-211.000
6
1
42.4
40.0
106.1
7170 AHMDPR.E
132.00*
6
71703 AHMDPR.E T-311.000
6
1
27.7
26.0
106.5
7200 KHANPUR
132.00*
6
72001 KHANPUR T-1 11.000
6
1
42.6
40.0
106.4
7210 MWQRSHIA
132.00*
6
72101 MWQRSHIA T-111.000
6
1
27.7
26.0
106.5
7220 R.Y.KHAN
132.00*
6
72201 R.Y.KHAN T-111.000
6
1
45.4
40.0
113.6
7255 WAPDATWN
132.00*
6
72551 WAP TO T-1
11.000
6
1
49.2
40.0
123.0
7255 WAPDATWN
132.00*
6
72552 WAPDA TO T-211.000
6
1
48.2
40.0
120.5
7265 QASIMBGH
132.00*
6
72652 Q BAGH T-2
11.000
6
1
27.0
26.0
104.0
7270 MLN-IND
132.00*
6
72702 MLN-IND T-2 11.000
6
1
27.8
26.0
107.1
7280 MN.VR.RD
132.00*
6
72803 MN.VR.RD T-311.000
6
1
28.3
26.0
108.7
7328 KBGASHER
132.00*
6
73281 KBGASHER T-111.000
6
1
33.8
26.0
130.1
7330 MZFRGARH
132.00
6
6
1
112.2
112.0
100.2
7331 KOTADU-O
132.00*
6
73314 KOTADU-O T-411.000
6
1
29.2
26.0
112.1
7456 CHOKAZAM
132.00*
6
74562 C AZAM T-2
11.000
6
1
28.1
26.0
108.2
7459 KHANGARH
132.00*
6
74591 KHANGARH T-111.000
6
1
13.6
13.0
104.9
7831 FATEHPUR
132.00*
6
78312 FATEPUR T-2 11.000
6
1
13.0
13.0
100.1
7974 UCH.SHRF
132.00*
6
79741 UCH.SHRF T-211.000
6
1
15.5
13.0
118.9
7974 UCH.SHRF
132.00*
6
79742 UCH.SHRF T-311.000
6
1
16.4
13.0
126.2
7459 KHANGARH
132.00*
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
504760-01-A4
113
Disco Transmission Expansion Plan
National Power System Expansion Plan
Sub Station
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
132 KV
B Hayat
Karam Pur
Daharanwala
Haroonabad
Dunyhiapur
MWQ
Fatepur
Jatoi
B Nager
K Khu
Khanewal
M Rashid
Ind. State
Vehari Road
Chk Azam
Kot Addu
Wapda Town
Chunawala
Kassowal
H Sidnai
Garmore
Khanghar
Jaheniani
B U Jadid
K Pacca
A P East
Khanpur
Qasimbagh
Shujabad
R.Y. Khan
Mian channu
Burewala
Uch Sharif
Transformer
NO.
2018
KV
T-1
T-1 & T-2
T-1 & T-2
T-2
T-3
T-3
T-2
T-1 & T-2
T-3
T-1 & T-2
T-2
T-1 & T-2
T-3
T-3
T-2
T4
T-1 & T-2
T-2
T-3
T-3
T-2
T-2
T-3
T-3
T-3
T-4
T-3
T-3
T-3
T-3
T-4
T-1
T-1 & T-2
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
132 /
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
Proposed
MVA
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Augmantation
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Extension
Augmantation
Augmantation
26
26
26
26
26
26
26
26
40
40
40
40
40
40
40
40
40
13
13
13
13
13
26
26
26
26
26
26
26
40
40
40
26
Transmission Line
Additions/Modification
132 Kv Muzafarghar ‐ Khanghar
Lynex to Greely
KM
17 Km
Reinforcements to overcome (N-0) violations; continue...
504760-01-A4
114
Disco Transmission Expansion Plan
National Power System Expansion Plan
No.
Substation
Capacitors
1
132Kv Capacitor Haroon abad
36 MVAR
2
132Kv Feroza
36 MVAR
3
132Kv J P Pirwala
36 MVAR
4
132Kv Burewala
36 MVAR
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse was recorded.
Out-of-Limits Bus Voltages:
One voltage problem was recorded (outside: 0.90 – 1.10 pu).
-------------------------------------------------------------------------------MONITORED VOLTAGE REPORT:
CONTINGENCY
<-------- B U S -------->
SINGLE 109
7120 LODHRAN
132.00
V-CONT
V-INIT
V-MAX
V-MIN
0.86791
1.00125
1.10000
0.90000
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
7120*LODHRAN
132.00
7140 BHAWALPR
132.00 1
SINGLE 96
112.0
113.7
103.5
%
7120*LODHRAN
132.00
7140 BHAWALPR
132.00 1
SINGLE 97
112.0
118.1
108.2
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 96
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7110 [BASTIMLK
132.00] CKT 1
SINGLE 97
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7125 [LAR
132.00] CKT 1
--------------------------------------------------------------------------------
504760-01-A4
115
Disco Transmission Expansion Plan
National Power System Expansion Plan
To overcome these (N-1) violations, more system additions were considered as follows.
No.
Transmission Line
Additions/Modification
KM
1
Bahawalpur ‐ Lodharan
Lynx to Greelay
17 Km
2
Wapda Town ‐ Khanewal Road
Lynx to Greelay
7 Km
3
Feroza ‐ Khanbela
Lynx (New Line)
22 Km
Reinforcements to overcome (N-1) violations; continue...
Substation
Capacitors
132 Kv Capacitor Lodharan
36 MVAR
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed MEPCO base case for Year2018 with the above mentioned system reinforcements are given in Appendix-5 (spread
over 8 Sheets).
7.1.24 “HESCO & SEPCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of HESCO and SEPCO by Year-2018 is 3,143 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], many low voltage problems were
recorded within the HESCO and SEPCO systems as given below. As mentioned in the
HESCO and SEPCO 2016 analysis, the upper voltage limit for was set to 1.08 pu
instead of 1.05 pu due to the coverage and radial nature of the system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
* NONE *
504760-01-A4
116
Disco Transmission Expansion Plan
National Power System Expansion Plan
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
8252 WARAH
132.00
7 0.9467 124.97
8300 ROHRI
66.000
7 0.9397 62.017
8310 NARA C-1
66.000
7 0.5603 36.981
8320 NARA C-2
66.000
7 0.4986 32.910
8330 ROHRI CMT
66.000
7 0.9389 61.970
9505 MITHI
132.00
7 0.9489 125.26
80401 1
11.000
7 0.9396 10.336
80701 1
11.000
7 0.9322 10.254
80702 2
11.000
7 0.9322 10.254
80802 2
11.000
7 0.9495 10.445
80901 1
11.000
7 0.9481 10.429
81002 2
11.000
7 0.9424 10.367
81003 3
11.000
7 0.9382 10.320
81201 1
11.000
7 0.9388 10.327
81202 2
11.000
7 0.9315 10.246
81251 1
11.000
7 0.9367 10.304
81302 2
11.000
7 0.9449 10.394
82301 1
11.000
7 0.9235 10.158
82302 2
11.000
7 0.9424 10.366
82311 1
11.000
7 0.9281 10.209
82312 2
11.000
7 0.9408 10.349
82371 1
11.000
7 0.9431 10.374
82372 2
11.000
7 0.9463 10.409
82373 3
11.000
7 0.9405 10.346
82402 2
11.000
7 0.9421 10.363
82511 1
11.000
7 0.9365 10.302
82512 2
11.000
7 0.9485 10.434
82521 1
11.000
7 0.9448 10.393
82552 2
11.000
7 0.9466 10.413
83101 1
11.000
7 0.5256
5.781
83102 2
11.000
7 0.5256
5.781
83201 1
11.000
7 0.4710
5.181
83202 2
11.000
7 0.4877
5.364
83421 1
11.000
7 0.9196 10.115
83422 2
11.000
7 0.9196 10.115
84591 1
11.000
7 0.9297 10.226
84592 2
11.000
7 0.9402 10.342
84861 1
11.000
7 0.8844
90301 1
11.000
7 0.9444 10.389
90302 2
11.000
7 0.9444 10.389
90411 1
11.000
7 0.9321 10.253
91351 1
11.000
7 0.9313 10.244
91402 2
11.000
7 0.9321 10.254
94792 2
11.000
7 0.9390 10.328
95011 1
11.000
7 0.9499 10.449
95201 1
11.000
7 0.9239 10.163
95251 1
11.000
7 0.9483 10.431
9.728
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
700 DADU
AREA
220.00*
15
8020 GUDDULEF
132.00*
7
8040 MIRPUR M
132.00*
8040 MIRPUR M
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
132.00
7
1
492.7
480.0
102.6
80201 1
11.000
7
1
13.4
13.0
102.9
7
80401 1
11.000
7
1
29.5
26.0
113.5
132.00*
7
80402 2
11.000
7
1
13.2
13.0
101.8
8070 GHOTKI
132.00*
7
80701 1
11.000
7
1
27.8
26.0
107.0
8070 GHOTKI
132.00*
7
80702 2
11.000
7
1
27.8
26.0
107.0
8120 PIRJOGOTH
132.00*
7
81202 2
11.000
7
1
29.4
26.0
112.9
8130 GAMBAT
132.00*
7
81302 2
11.000
7
1
28.1
26.0
108.1
8174 SEHWAN
132.00*
7
81741 1
11.000
7
1
13.1
13.0
101.1
8174 SEHWAN
132.00*
7
81742 2
11.000
7
1
13.1
13.0
101.1
8180 KHANOT
132.00*
7
81801 1
11.000
7
1
6.6
6.5
101.0
504760-01-A4
8170 DADU NEW
117
Disco Transmission Expansion Plan
National Power System Expansion Plan
8230 ARIAN RD
132.00*
7
82301 1
11.000
7
1
27.6
26.0
106.2
8231 SUKERCTY
132.00*
7
82312 2
11.000
7
1
26.8
26.0
103.2
8257 NAUDERO
132.00*
7
82571 2
11.000
7
1
14.4
13.0
111.0
8257 NAUDERO
132.00*
7
82572 1
11.000
7
1
14.4
13.0
111.0
9020 N.S.SNGR
132.00*
7
90201 1
11.000
7
1
26.9
26.0
103.5
9030 SHAHPURC
132.00*
7
90301 1
11.000
7
1
14.0
13.0
107.9
9030 SHAHPURC
132.00*
7
90302 2
11.000
7
1
14.0
13.0
107.9
9041 KANDARI
132.00*
7
90411 1
11.000
7
1
14.8
13.0
113.8
9090 HALAROAD
132.00*
7
90903 3
11.000
7
1
29.7
26.0
114.4
9135 MIR WAHG
132.00*
7
91351 1
11.000
7
1
13.3
13.0
102.1
9410 QASIMABAD-I 132.00*
7
94103 3
11.000
7
1
43.9
40.0
109.7
9410 QASIMABAD-I 132.00*
7
94104 4
11.000
7
1
43.9
40.0
109.7
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Under HESCO:
1. Addition of 3rd 20/26 MVA Power Transformer at 132KV Grid Station N.S SNGR
(9020).
2. Augmentation of T-1 & T-2 Power Transformers, with 20/26 MVA at 132KV Grid
Station Shahpur Chakar (9030).
3. Addition of second 10/13 MVA Power Transformer at 132KV Grid Station Kandari
(9041).
4. Augmentation of T-1 Power Transformer (20/26 MVA), with 40 MVA at 132KV
Grid Station Hala Road (9090).
5. Addition of second 10/13 MVA Power Transformer at 132KV Grid Station Mir
Wah Gorchani (9135).
6. Augmentation of T-1 & T-2 Power Transformers, with 20/26 MVA at 132KV Grid
Station Sehwan (8174).
7. Augmentation of T-1 6.3 MVA Power Transformer, with 10/13 MVA at 132KV
Grid Station Khanot (8180).
8. Augmentation of T-1 6.3 MVA Power Transformer with 10/13 at 132KV Grid
Station Shalmani (8176).
504760-01-A4
118
Disco Transmission Expansion Plan
National Power System Expansion Plan
9. 25 MW Load shifted from 132KV Grid Station Qasimabad-I (9410) to 132KV Grid
Station Hill Top (9411) and addition of 3rd Power Transformer Bay with 40 MVA
at Hill Top Grid Station (9411).
10. Reduce capacitor T-2 of 132KV Hala Grid Station and set the same up-to 4.8
MVAR (9060).
Under SEPCO:
1. Addition of second 32/11KV, 10/13 MVA Power Transformer at 132KV Grid
Station Guddu Left (8020).
2. Augmentation of T-2 Power Transformer from 10/13MVA to 40 MVA at 132KV
Grid Station Mirpur Mathelo (8040).
3. Addition of 3rd 132/11KV 40MVA Power Transformer Bay at 132KV Grid Station
Ghotki (8070).
4. Augmentation of T-1 10/13 MVA Power Transformer, with 40 MVA at 132KV Grid
Station Pir Jo Goth (8120).
5. Addition of 3rd 132/11KV 40MVA Power Transformer Bay at 132KV Grid Station
Gambat (8130).
6. Augmentation of T-2 10/13 MVA Power Transformer, with 40 MVA at 132KV Grid
Station Arain Road (8230).
7. Addition of 3rd 132/11KV 40MVA Power Transformer Bay at 132KV Grid Station
Sukkur City (8231).
8. Augmentation of T-1 & T-2 Power Transformers, with 20/26 MVA at 132KV Grid
Station Naudero (8257).
9. Increase capacitor from 1.2 MVAR to 2.4 MVAR at 132KV Grid Station
Rasoolabad (8341).
10. Installation of 2.4 MVAR capacitor bank, at T-1 of 132KV Grid Station Ghari
Khairo (8486).
504760-01-A4
119
Disco Transmission Expansion Plan
National Power System Expansion Plan
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
One severe line outage would lead to area collapse was recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
SINGLE 204
EVENTS
: OPEN LINE FROM BUS 9190 [KOTRI SITE
132.00] TO BUS 9200 [KOTRI
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
Many voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 92
<-------- B U S -------->
8310 NARA C-1
66.000
0.89635
0.95294
1.10000
0.90000
SINGLE 92
8320 NARA C-2
66.000
0.89655
0.96185
1.10000
0.90000
SINGLE 105
8252 WARAH
132.00
0.89270
0.96011
1.10000
0.90000
SINGLE 105
8485 SHADADKT
132.00
0.86714
0.98024
1.10000
0.90000
SINGLE 105
8486 GHARI KHAIRO132.00
0.85944
0.97425
1.10000
0.90000
SINGLE 111
8251 QAMBER
132.00
0.88464
0.97096
1.10000
0.90000
SINGLE 111
8252 WARAH
132.00
0.87108
0.96011
1.10000
0.90000
SINGLE 138
9025 JAM SAHIB
132.00
0.89901
0.97804
1.10000
0.90000
SINGLE 190
9494 SAMARO
66.000
0.85171
1.00292
1.10000
0.90000
SINGLE 190
9506 PITHORO
66.000
0.83967
0.99411
1.10000
0.90000
SINGLE 190
9510 NABISRRD
66.000
0.88517
0.99033
1.10000
0.90000
SINGLE 190
9595 KUNRI
66.000
0.85860
0.98842
1.10000
0.90000
SINGLE 249
9475 T.G ALI
132.00
0.85580
0.99102
1.10000
0.90000
SINGLE 249
9479 DIGRI
132.00
0.86600
0.97834
1.10000
0.90000
SINGLE 249
9505 MITHI
132.00
0.89039
0.96432
1.10000
0.90000
SINGLE 249
9520 T.JAN MO
132.00
0.88102
0.97728
1.10000
0.90000
SINGLE 256
9486 BADIN
66.000
0.82603
1.04380
1.10000
0.90000
SINGLE 256
9487 T/T.BAGO
66.000
0.83283
1.01629
1.10000
0.90000
SINGLE 256
9488 TANDO BAGO
66.000
0.82862
1.01297
1.10000
0.90000
SINGLE 256
9490 KADHAN
66.000
0.81086
1.03630
1.10000
0.90000
SINGLE 256
9515 T-KALOI
66.000
0.89774
0.99251
1.10000
0.90000
SINGLE 256
9516 KALOI
66.000
0.88069
0.97856
1.10000
0.90000
SINGLE 256
9518 PANGIRO
66.000
0.89145
0.99282
1.10000
0.90000
SINGLE 258
9487 T/T.BAGO
66.000
0.87194
1.01629
1.10000
0.90000
SINGLE 258
9488 TANDO BAGO
66.000
0.86794
1.01297
1.10000
0.90000
SINGLE 276
9487 T/T.BAGO
66.000
0.87414
1.01629
1.10000
0.90000
504760-01-A4
120
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 276
9488 TANDO BAGO
66.000
0.87020
1.01297
1.10000
0.90000
SINGLE 276
9515 T-KALOI
66.000
0.74951
0.99251
1.10000
0.90000
SINGLE 276
9516 KALOI
66.000
0.72468
0.97856
1.10000
0.90000
SINGLE 276
9518 PANGIRO
66.000
0.75645
0.99282
1.10000
0.90000
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
Line/Transformer Overloads:
Four marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
8260*MEHAR
132.00
8270 KPN SHAH
132.00 1
SINGLE 61
112.0
121.5
113.0
%
8260*MEHAR
132.00
8270 KPN SHAH
132.00 1
SINGLE 74
112.0
112.2
103.4
9400 JAMSHORO NEW132.00
9410*QASIMABAD-I 132.00 1
SINGLE 167
184.0
192.5
104.9
9090 HALAROAD
9410*QASIMABAD-I 132.00 1
SINGLE 231
184.0
192.4
104.7
132.00
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 61
: OPEN LINE FROM BUS 8170 [DADU NEW
132.00] TO BUS 8187 [DADU-2
132.00] CKT 1
SINGLE 74
: OPEN LINE FROM BUS 8187 [DADU-2
132.00] TO BUS 8260 [MEHAR
132.00] CKT 1
SINGLE 167
: OPEN LINE FROM BUS 9090 [HALAROAD
132.00] TO BUS 9410 [QASIMABAD-I 132.00] CKT 1
SINGLE 231
: OPEN LINE FROM BUS 9400 [JAMSHORO NEW132.00] TO BUS 9410 [QASIMABAD-I 132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Under HESCO:
1. Second Circuit from Kotri Power House (9200) to 132KV Grid Station Kotri Site
(9190) with Greeley Conductor.
2. Second circuit from New Jamshoro (9400) – Qasimabad-I (9410) – Hala Road
(9090) Grid Station with Rail Conductor.
3. Increase capacitor from 2.4 MVAR to 3.6 MVAR at T-1 of 66KV Grid Station
Kadhan (9490).
4. Add 1.2 MVAR capacitor Bank, at T-1 of 66KV Grid Station Tando Bago (9488).
504760-01-A4
121
Disco Transmission Expansion Plan
National Power System Expansion Plan
5. Increase capacitor Bank from 20.22 to 30.33 MVAR at 132KV Grid Station
Noukot (9501).
6. Add 1.2 MVAR capacitor Bank, at T-1 of 66KV Grid Station Kunri (9595).
7. Add 1.2 MVAR capacitor Bank, at T-2 of 132KV Grid Station Digri (9479).
8. Add 2.4 MVAR capacitor Bank, at T-1 of 132KV Grid Station T.G Ali (9475).
9. Add 2.4 MVAR capacitor Bank, at T-1 of 66KV Grid Station Pangrio (9518).
10. Increase Capacitor from 1.2 MVAR to 4.8 MVAR at T-1 of 66KV Grid Station
Kaloi (9516).
Under SEPCO:
1. Second circuit from 132KV Grid Station Mehar (8260) to 132KV Grid Station KPN
Shah (8270) with Greeley Conductor.
2. Install 12MVAR capacitor Bank at 132KV Grid Station Shdadkot (8485).
3. Increase capacitor Bank from 4.8 to 7.2 MVAR at T-2 of 132KV Grid Station
Shdadkot (8485).
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed HESCO and SEPCO base
case for Year-2018 with the above mentioned system reinforcements are given in
Appendix-5 (spread over 12 Sheets).
7.1.25 “QESCO” Distribution System for Year-2018
The Year-2018 base case was studied based on the planning criteria described in
Section 12.5. The total load of QESCO by Year-2018 is 2,020 MW.
504760-01-A4
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Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], two marginal low voltage problems
were recorded within the QESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
9770 ZHOB
132.00
V(PU)
V(KV)
8 0.9475 125.07
BUS# X-- NAME --X BASKV AREA
80040 PANJGUR
132.00
8 0.9390 123.95
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
645 MASTUNG
220.00*
15
9780 MASTUNG
132.00
8
1
435.8
320.0
136.2
970 QUETTA
220.00*
15
9660 QUETTAIN
132.00
8
1
744.1
480.0
155.0
9600 SIBBI
132.00*
8
96001
11.000
8
1
26.1
26.0
100.5
9600 SIBBI
132.00*
8
96002
11.000
8
1
26.1
26.0
100.5
9655 DARWAZA
132.00*
8
96551
11.000
8
1
28.4
26.0
109.3
9670 SARYAB
132.00*
8
96703 T-3
11.000
8
1
40.7
40.0
101.9
9680 Q.CITY
132.00*
8
96801
11.000
8
1
42.5
40.0
106.1
9680 Q.CITY
132.00*
8
96802
11.000
8
1
42.5
40.0
106.1
9710 PISHIN
132.00*
8
97101
11.000
8
1
29.2
26.0
112.1
9710 PISHIN
132.00*
8
97102
11.000
8
1
29.6
26.0
114.0
9710 PISHIN
132.00*
8
97104
11.000
8
1
29.2
26.0
112.1
9780 MASTUNG
132.00*
8
97801
11.000
8
1
30.3
26.0
116.5
9810 NOSHKI
132.00*
8
98101
11.000
8
1
34.2
26.0
131.4
9810 NOSHKI
132.00*
8
98102
11.000
8
1
16.8
13.0
129.2
80020 TURBAT
132.00*
8
80022 T-2
11.000
8
1
15.4
13.0
118.1
--------------------------------------------------------------------------------
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Before performing the contingency analysis (N-1), one line was added to solve the (N-0)
violations, as follows.
New Grid Stations:
1. 132 KV PCSIR Hazarganji In/Out from Quetta Industrial to Pishin circuit to give
relieve to Quetta Industrial and Sariab Grid Station
2. 132 KV Nohsar Grid Station In/Out from Quetta Industrial to Pishin circuit to give
relieve to Q.S.Manda and Sariab Grid Station
3. Conversion of 33 KV to 132 KV Isplenji Grid Station with allied T/L
4. Conversion of 66 KV Gandakha Grid Station to 132 KV with allied T/L
5. Conversion of 66 KV Sorrange Grid Station to 132 KV with allied T/L
Augmentation/Extension of Power Transformers:
1. Additional 26 MVA T/F at Sibi Grid Station
2. Augmentation of 13 with 40 MVA T/F at Noshki Grid Station
3. Additional 40 MVA T/F at Quetta City Grid Station
4. Augmentation of 26 with 40 MVA at 132 KV Mastung Grid Station
5. Augmentation of T-1 & T-2 26 with 40 MVA T/Fs at 132 KV Pishin Grid Station
6. Augmentation of 26 with 40 MVA T/F at 132 KV Darwaza Grid Station
7. Augmentation of 13 with 26 MVA T/F at 132 KV Turbat Grid Station
Installation of Fixed Shunts:
1. Installation of 12 MVAR (132 KV side) at M/Pur Grid Station
2. Installation of 3.6 MVAR for T-2 at Turbat Grid Station
504760-01-A4
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National Power System Expansion Plan
Lines:
1. 2nd circuit from Quetta Industrial to Q.S.Manda 30 Km with Rail conductor.
With the above line addition, no voltage or line overloading problems were recorded
under (N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Only one contingency would lead to three low voltage problems was recorded (outside:
0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 108
<-------- B U S -------->
9850 GIDDER
132.00
0.82666
0.99962
1.10000
0.90000
SINGLE 108
9855 KHARAN
132.00
0.89564
1.01565
1.10000
0.90000
SINGLE 108
9859 BASIMA
132.00
0.84642
1.00462
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
SINGLE 108
EVENTS
: OPEN LINE FROM BUS 9840 [SURAB
132.00] TO BUS 9850 [GIDDER
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
One very marginal overloading problem was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
9787 KANAK
132.00
9790*PANJPAI
132.00 2
SINGLE 90
112.0
115.0
100.2
%
9787 KANAK
132.00
9790*PANJPAI
132.00 1
SINGLE 91
112.0
115.0
100.2
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 90
: OPEN LINE FROM BUS 9787 [KANAK
132.00] TO BUS 9790 [PANJPAI
132.00] CKT 1
SINGLE 91
: OPEN LINE FROM BUS 9787 [KANAK
132.00] TO BUS 9790 [PANJPAI
132.00] CKT 2
504760-01-A4
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National Power System Expansion Plan
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Re-Conductoring:
1. 1st Kanak (9787) to Panjpai (9790) – Lynx with Greeley
Fixed Shunt:
1. 132 KV Kharan T-3 – 7.2 MVAR
2. Noshki 132 KV side – 24 MVAR new capacitor bank
3. 7.2 MVAR on 132 KV side at Hoshab G/S
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed QESCO base case for Year2018 with the above mentioned system reinforcements are given in Appendix-5 (spread
over 5 Sheets).
7.1.26 Year-2020 Study Base Cases
As mentioned in the methodology (Section 12.6), each DISCO has prepared the Year2020 case based of the following:
a) The final Year-2018 case with all reinforcements developed in Section 12.7.3
b) Load forecast of Year-2020
The load flow results are given for each DISCO independently in three main activities.
a) Analysing the developed case under both normal (N-0) and contingency (N-1)
conditions
b) Identifying system reinforcements as appropriate
c) Re-checking the system under (N-0) and (N-1) with system reinforcements
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7.1.27 “PESCO & TESCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total loads of PESCO and TESCO by Year-2020 are 3,674 MW and
1,278 MW, respectively (combined: 4,953 MW).
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], some voltage problems were recorded
within the PESCO and TESCO systems as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
1691 DIR
33.000
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
1 1.0504 34.663
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
1351 DATAKHEL
132.00
1601 T-SSPS
66.000
1605 SSPS
66.000
1880 DARABAN
V(PU)
V(KV)
10 0.9368 123.65
1355 RAZMAK
132.00
10 0.9421 124.36
1 0.9099 60.057
1602 WARSAK-D
66.000
1 0.8927 58.917
10 0.9092 60.007
1775 PARACINA
132.00
10 0.9479 125.13
1 0.9457 10.403
66.000
1 0.9428 62.227
11421 T1
11.000
13381 T1
11.000
1 0.9460 10.406
13382 T2
11.000
1 0.9460 10.406
13502 T1
11.000
10 0.9350 10.285
13503 T2
11.000
10 0.9194 10.113
13504 T3
11.000
10 0.9235 10.159
13511 T1
11.000
10 0.9153 10.068
13512 T2
11.000
10 0.9152 10.067
13551 T3
11.000
10 0.9339 10.273
16021 T1
11.000
1 0.8646
9.510
16022 T2
11.000
16051 T1
11.000
10 0.8818
9.700
1 0.8646
9.510
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
504760-01-A4
AREA
BUS# X-- NAME --X BASKV
127
AREA CKT LOADING
RATING PERCENT
Disco Transmission Expansion Plan
National Power System Expansion Plan
1080 SWABI
132.00*
1
10801 T1
11.000
1
1
41.3
40.0
103.2
1080 SWABI
132.00*
1
10802 T2
11.000
1
1
26.6
26.0
102.3
1142 K.KHELA
132.00*
1
11421 T1
11.000
1
1
29.1
26.0
111.9
1170 NOWSHR-I
132.00*
1
11701 T1
11.000
1
1
26.2
26.0
100.7
1270 PESH UNI
132.00*
1
12701 T1
11.000
1
1
41.1
40.0
102.8
1270 PESH UNI
132.00*
1
12702 T2
11.000
1
1
41.6
40.0
104.1
1270 PESH UNI
132.00*
1
12703 T3
11.000
1
1
41.6
40.0
104.1
1306 K.T SHIP
132.00*
1
13061 T1
11.000
1
1
27.1
26.0
104.1
1306 K.T SHIP
132.00*
1
13062 T2
11.000
1
1
13.5
13.0
104.1
1336 SABIR ABAD
132.00*
1
13361 T1
11.000
1
1
14.9
13.0
114.5
1375 NATIAGLI
132.00*
1
13751 T1
11.000
1
1
27.0
26.0
103.7
1380 MANSEHRA
132.00*
1
13801 T1
11.000
1
1
40.1
40.0
100.3
1380 MANSEHRA
132.00*
1
13802 T2
11.000
1
1
26.2
26.0
100.9
1460 TANK
132.00*
1
14602 T6
11.000
1
1
27.2
26.0
104.8
1670 TIMRGARH
66.000*
1
16702 T2
11.000
1
1
13.4
13.0
103.3
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
PESCO Reinforcements
New Grid Stations:
1. New 132 KV Dargai Charsadda with 2*20/26 MVA & In-Out feed from MardanNaguman 6 KM with Lynx.
2. New 132 KV Baja Bam Khel with 2*20/26 MVA & feed from Gadoon-Swabi 4km
with Lynx.
3. New 132 KV Ring Road with 2*20/26 MVA and 1*40 MVA feed from
S/Muhammadi-HayatAbad with In/Out.
4. New 132 KV Shinkyari with 2*10/13 MVA In/Out from Oghi-Battal length 4 KM
with Lynx.
5. New 132 KV Salarzai (Bunir) with 2*20/26 MVA feed from 132 KV Daggar, 15 KM
SDT line with Lynx.
6. New 132 KV Akora Khattak with 2*26 MVA feed from Nawshehra-AkoraJahangira 35km SDT with Rail.
504760-01-A4
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National Power System Expansion Plan
7. New 132 KV Kot Mortaza D.I Khan with 2*10/13 MVA In-Out from Tank-Gomal
Zam length 5 km with Lynx.
8. New 132 KV Tajori with 2*10/13 MVA feed from Tajazai, 15 km SDT line with
Lynx.
Augmentations:
1. 20/26 by 40 MVA at T-2, 132 KV Swabi.
2. 10/13 by 20/26 MVA atT-2, 132 KV Kotal Town Ship.
3. 20/26 by 40 MVA at T-1, 132 KV Charsadda.
4.
10/13 by 20/26 MVA at T-2, 132 KV Nawshehra Industrial.
Extensions:
1. Extension with 20/26 MVA at 132 KV Mardan.
2. Extension with 20/26 at 132 KV Khwaza Khela.
3. Extension with 10/13 MVA at 132 KV Sabir Abad.
4. Extension with 10/13 MVA at 132 KV Nathiagali.
Conversion of 66 kV Grid Station:
1. 132 KV Timergiera with 1*10/13 MVA and 1*20/26 MVA feed from 132 KV
Timergera 5 km SDT line with Lynx.
2. 132 KV Kulachi with 2*10/13 MVA, 45 KM SDT line with Lynx feed form D.I.Khan.
3. 132 KV Daraband with 2*10/13 MVA, 25 KM SDT line with lynx feed from
Kulachi.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
TESCO Reinforcements
New Grid Stations:
1. 132 KV Mohmand Marble City with 2*20/26 MVA feed from Warsak 9 KM SDT
line with Lynx.
11 kV Capacitors:
1. 2.4 MVAR at T-1, 66 KV Sper Sang G/S.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse was recorded.
Out-of-Limits Bus Voltages:
Some low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 144
<-------- B U S -------->
1775 PARACINA
132.00
0.88903
0.97201
1.10000
0.90000
SINGLE 152
1775 PARACINA
132.00
0.86748
0.97201
1.10000
0.90000
SINGLE 156
1335 KARAK
132.00
0.86803
1.01626
1.10000
0.90000
SINGLE 156
1336 SABIR ABAD
132.00
0.85800
1.00861
1.10000
0.90000
SINGLE 156
1338 SIRAJ BABA
132.00
0.86256
1.01178
1.10000
0.90000
SINGLE 169
1346 MIR ALI
132.00
0.87489
1.01092
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 144
: OPEN LINE FROM BUS 1302 [GURGURI
132.00] TO BUS 1332 [BANNU-N
SINGLE 152
: OPEN LINE FROM BUS 1315 [TALL
132.00] TO BUS 1755 [SADDA TESCO 132.00] CKT 1
132.00] CKT 1
SINGLE 156
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1335 [KARAK
132.00] CKT 1
SINGLE 169
: OPEN LINE FROM BUS 1342 [BANNU-II
132.00] TO BUS 1346 [MIR ALI
132.00] CKT 1
--------------------------------------------------------------------------------
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130
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National Power System Expansion Plan
Line/Transformer Overloads:
A few marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
132.00
1760*ALIZAI
132.00 2
SINGLE 152
112.0
115.7
112.0
1755 SADDA TESCO 132.00
1760*ALIZAI
132.00 1
SINGLE 152
112.0
106.6
103.2
1315*TALL
132.00
1755 SADDA TESCO 132.00 1
SINGLE 153
112.0
119.4
108.8
1300 KOHAT
132.00
1320*LACHI
132.00 1
SINGLE 156
112.0
113.4
105.0
1332*BANNU-N
132.00
1340 BANNU
132.00 2
SINGLE 157
112.0
122.8
105.6
1332*BANNU-N
132.00
1340 BANNU
132.00 2
SINGLE 159
112.0
122.8
105.6
1315 TALL
%
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 152
: OPEN LINE FROM BUS 1315 [TALL
132.00] TO BUS 1755 [SADDA TESCO 132.00] CKT 1
SINGLE 153
: OPEN LINE FROM BUS 1315 [TALL
132.00] TO BUS 1760 [ALIZAI
132.00] CKT 2
SINGLE 156
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1335 [KARAK
132.00] CKT 1
SINGLE 157
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1340 [BANNU
132.00] CKT 1
SINGLE 159
: OPEN LINE FROM BUS 1332 [BANNU-N
132.00] TO BUS 1340 [BANNU
132.00] CKT 3
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
PESCO Reinforcements
11 kV Capacitors:
1. 4.8 MVAR Caps at T-1, 132 KV Shakardara G/S.
2. 4.8 MVAR Caps each at T-1 & T-2, 132 KV Siraj Baba G/S.
3. 4.8 MVAR Caps at T-2, 132 KV Sabir Abad G/S.
4. 7.2 MVAR Caps at T-2, 132 KV Battal G/S.
T/ Lines:
1. Reconductoring of 2nd Ckt 132 KV Domel -Bannu line with Greeley conductor
length 16 KM.
504760-01-A4
131
Disco Transmission Expansion Plan
National Power System Expansion Plan
TESCO Reinforcements
132 kV Capacitors:
1. 48 MVAR Caps at 132 KV Miranshah G/S.
2. 24 MVAR Caps at 132 KV Parachinar G/S.
T/ Lines:
1. Additional Ckt Tall-Sadda 39.3 KM with Lynx.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed PESCO and TESCO base
case for Year-2020 with the above mentioned system reinforcements are given in
Appendix-6 (spread over 9 Sheets).
7.1.28 “IESCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of IESCO by Year-2020 is 4,273 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], no voltage problems were recorded
within the IESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
504760-01-A4
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
132
Disco Transmission Expansion Plan
National Power System Expansion Plan
* NONE *
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few overloading problems was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
210 BURHAN
220.00*
15
2020 BURHAN
132.00
2
1
540.3
480.0
112.6
212 TAXILA
220.00*
15
2100 TAXILA
132.00
2
1
594.4
500.0
118.9
215 IBD.P.RD
220.00*
15
2025 SANGJANI
132.00
2
1
570.5
480.0
118.9
216 ISLMBD-U
220.00*
15
2240 ISB-UNIVERTY132.00
2
1
612.4
500.0
122.5
220 REWAT-N
220.00*
15
2300 REWAT NEW
132.00
2
1
561.7
480.0
117.0
220 REWAT-N
220.00*
15
2300 REWAT NEW
132.00
2
2
254.8
160.0
159.2
230 MANGLA
220.00
15
2400 MANGLA
132.00*
2
1
429.6
414.0
103.8
Note: 220/132kv Power Transformers relate to NTDC.
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), system reinforcements including new
grid stations and augmentations were added as follows.
Augmentation of Power Transformers:
Bus #
20603
Name of 132kV Grid Station
New Wah
Existing
Capacity (MVA)
3x26
Proposed
Capacity (MVA)
2x26, 1x40
Addition of Power Transformers:
Bus #
21053
22713
504760-01-A4
Name of 132kV Grid Station
Margala
Sowan
Existing
Capacity (MVA)
2x26
2x26
133
Proposed addional Capacity (MVA)
1x40
1x40
Disco Transmission Expansion Plan
National Power System Expansion Plan
Installation of New 11KV Switch-Shunt Capacitor Banks:
Sr. No.
1
2
3
4
5
6
7
8
9
10
11
Bus No.
22661
22662
22671
22672
22673
21761
21762
21053
22713
21551
20603
Name of Grid Station
Bahria Town Golf City
Bahria Town Golf City
NPF
NPF
NPF
Bagh
Bagh
Margala
Sowan
Bahria Town Ph‐4
New Wah
Capacitor (MVAR)
9.6
9.6
7.2
7.2
7.2
2.4
2.4
7.2
7.2
12
9.6
Reconductoring of 132 kv Transmission Lines:
1. Rewat to Adyala Lynx to Greely 28 KM
2. Adyala to Chakri Lynx to Greely 33 KM
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
No line overloading problems were recorded based on 100% of rating A.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
System additions were considered as follows.
Reconductoring of 132 kv Transmission Lines:
1. Rewat to Adyala Lynx to Greely 28 KM
2.
Adyala to Chakri Lynx to Greely 33 KM
3. Kahuta City to Azad Pattan Lynx to Greely 25.8 KM
4. Azad Pattan to Plandri Lynx to Greely 15 KM
5. Plandri to Tara Khel Lynx to Greely 25 KM
6. Hayatt Hotel to University Lynx to Greely 3KM
7. Rawal to University Lynx to Greely 10km
New 132 kv Transmission Lines:
1. Rewat New to Kamalabad SDT with Rail conductor 23KM
2. GHQ to H-11 SDT with Rail Conductor 6 KM
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed IESCO base case for Year2020 with the above mentioned system reinforcements are shown in Appendix-6 (spread
over 9 Sheets).
7.1.29 “GEPCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of GEPCO by Year-2020 is 3,279 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria- [0.95-1.05 pu], one marginal voltage problem was
recorded within the GEPCO system.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
3522 SHAKARGR
132.00
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
3 0.9328 123.14
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few marginal overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
3004 KHARIAN
132.00*
3
30041 T1
11.000
3
1
28.4
26.0
109.4
3004 KHARIAN
132.00*
3
30042 T2
11.000
3
1
27.3
26.0
104.8
3007 BHIMBER
132.00*
3
30071 T1
11.000
3
1
26.1
26.0
100.5
3009 LALAMUSA
132.00*
3
30092 T2
11.000
3
1
26.1
26.0
100.2
3009 LALAMUSA
132.00*
3
30093 T3
11.000
3
1
26.0
26.0
100.0
3013 GUJRAT-1
132.00*
3
30131 T1
11.000
3
1
42.4
40.0
106.1
3013 GUJRAT-1
132.00*
3
30132 T2
11.000
3
1
26.7
26.0
102.8
3013 GUJRAT-1
132.00*
3
30133 T3
11.000
3
1
26.7
26.0
102.6
3016 GUJRAT-2
132.00*
3
30161 T1
11.000
3
1
30.3
26.0
116.6
3016 GUJRAT-2
132.00*
3
30162 T2
11.000
3
1
30.0
26.0
115.3
3016 GUJRAT-2
132.00*
3
30163 T3
11.000
3
1
29.9
26.0
115.1
3053 KOT AGHA
132.00*
3
30531 T1
11.000
3
1
14.0
13.0
107.7
3060 SLK.CANT
132.00*
3
30601 T1
11.000
3
1
42.8
40.0
107.1
3060 SLK.CANT
132.00*
3
30602 T2
11.000
3
1
26.3
26.0
101.1
3060 SLK.CANT
132.00*
3
30603 T3
11.000
3
1
26.7
26.0
102.5
3135 S.W.BAGH
132.00*
3
31351 T1
11.000
3
1
40.3
40.0
100.8
3135 S.W.BAGH
132.00*
3
31352 T2
11.000
3
1
40.3
40.0
100.8
3150 EMINABAD
132.00*
3
31501 T-1
11.000
3
1
26.7
26.0
102.8
3170 KAMOKI
132.00*
3
31703 T-3
11.000
3
1
27.0
26.0
104.0
3200 GJRNWALA
66.000*
3
31101 T-6
11.000
3
1
15.1
13.0
115.8
3520 NAROWAL
132.00
3
132.00*
3
1
113.8
112.0
101.6
3521 ESSA
--------------------------------------------------------------------------------
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
Before performing the contingency analysis (N-1), four system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
1. Augmentation of 13 MVA power transformer (T3) with 26 MVA power transformer
at 132 kV Bhimber grid station
2. Augmentation of 26 MVA power transformer (T1) with 40 MVA power transformer
at 132 kV Gujrat-2 grid station
3. Augmentation of 26 MVA power transformer (T2) with 40 MVA power transformer
at 132 kV Cantt Sailkot grid station
4. Augmentation of 13 MVA power transformer (T1) with 26 MVA power transformer
at 132 kV Kot Agha grid station
Summary for (N-1) Results
Severe Outage Cases:
Two severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 75
: OPEN LINE FROM BUS 3080 [SLK.NEW
132.00] TO BUS 3105 [SAHUWALA
132.00] CKT 2
SINGLE 96
: OPEN LINE FROM BUS 3135 [S.W.BAGH
132.00] TO BUS 3140 [G.P.ROAD
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
%
3001 NANDPR-G
132.00
3140*G.P.ROAD
132.00 1
SINGLE 18
182.0
248.0
136.3
3001 NANDPR-G
132.00
3136*C BANK GRW
132.00 2
SINGLE 19
182.0
252.2
136.0
3136 C BANK GRW
132.00
3140*G.P.ROAD
132.00 1
SINGLE 19
182.0
208.1
113.8
504760-01-A4
137
Disco Transmission Expansion Plan
National Power System Expansion Plan
3009*LALAMUSA
132.00
3013 GUJRAT-1
132.00 2
SINGLE 34
90.0
146.4
168.1
3009*LALAMUSA
132.00
3013 GUJRAT-1
132.00 1
SINGLE 35
90.0
146.4
168.1
3013*GUJRAT-1
132.00
3316 NEW GUJRAT
132.00 4
SINGLE 43
182.0
267.9
144.7
3013*GUJRAT-1
132.00
3316 NEW GUJRAT
132.00 3
SINGLE 44
182.0
267.9
144.7
3080*SLK.NEW
132.00
3105 SAHUWALA
132.00 2
SINGLE 63
182.0
180.4
101.4
3135*S.W.BAGH
132.00
3140 G.P.ROAD
132.00 1
SINGLE 95
182.0
198.1
111.7
3001 NANDPR-G
132.00
3140*G.P.ROAD
132.00 1
SINGLE 97
182.0
209.7
114.1
3080*SLK.NEW
132.00
3105 SAHUWALA
132.00 2
SINGLE 103
182.0
180.5
105.8
3080*SLK.NEW
132.00
3240 SKT.NEW
66.000 1
SINGLE 103
37.5
55.6
148.2
3230*DASKA
66.000
3240 SKT.NEW
66.000 1
SINGLE 103
39.0
36.3
143.4
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 18
: OPEN LINE FROM BUS 3001 [NANDPR-G
132.00] TO BUS 3136 [C BANK GRW
132.00] CKT 2
SINGLE 19
: OPEN LINE FROM BUS 3001 [NANDPR-G
132.00] TO BUS 3140 [G.P.ROAD
132.00] CKT 1
SINGLE 34
: OPEN LINE FROM BUS 3009 [LALAMUSA
132.00] TO BUS 3013 [GUJRAT-1
132.00] CKT 1
SINGLE 35
: OPEN LINE FROM BUS 3009 [LALAMUSA
132.00] TO BUS 3013 [GUJRAT-1
132.00] CKT 2
SINGLE 43
: OPEN LINE FROM BUS 3013 [GUJRAT-1
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 3
SINGLE 44
: OPEN LINE FROM BUS 3013 [GUJRAT-1
132.00] TO BUS 3316 [NEW GUJRAT
132.00] CKT 4
SINGLE 63
: OPEN LINE FROM BUS 3050 [S.P.ROAD
132.00] TO BUS 3090 [SLK-CITY
132.00] CKT 1
SINGLE 95
: OPEN LINE FROM BUS 3130 [TH.SANSI
132.00] TO BUS 3151 [CHEANWLI
132.00] CKT 1
SINGLE 97
: OPEN LINE FROM BUS 3136 [C BANK GRW
132.00] TO BUS 3140 [G.P.ROAD
132.00] CKT 1
SINGLE 103
: OPEN LINE FROM BUS 3220 [NANDIPUR
66.000] TO BUS 3230 [DASKA
66.000] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
1. Proposed double circuit new line (25 km) on Rail conductor from Sahuwala to
Pasrup Road Sialkot.
2. Additions of many capacitor banks at the 11 kV voltage level.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed GEPCO base case for Year2020 with the above mentioned system reinforcements are shown in Appendix-6 (spread
over 5 Sheets).
7.1.30 “LESCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of LESCO by Year-2020 is 6,538 MW.
504760-01-A4
138
Disco Transmission Expansion Plan
National Power System Expansion Plan
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], one marginal voltage problem was
recorded within the LESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
271 WAPDATWN
220.00
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
4 0.9348 205.66
--------------------------------------------------------------------------------
Line/Transformer Overloads:
No overloading problems were recorded based on 100% of rating A.
No system reinforcements were added.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
No voltage problems were recorded (outside: 0.90 – 1.10 pu).
Line/Transformer Overloads:
Many line overloading problems were recorded based on 100% of rating A.
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 6
112.0
112.2
100.7
%
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 21
112.0
112.1
100.5
4012 LAHORE
132.00
4029*ATTABAD
132.00 2
SINGLE 25
202.0
229.4
112.3
4012 LAHORE
132.00
4029*ATTABAD
132.00 1
SINGLE 26
202.0
229.4
112.3
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 44
112.0
112.0
100.3
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 45
112.0
112.0
100.3
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 48
112.0
112.1
100.4
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 49
112.0
112.1
100.4
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 50
112.0
112.5
100.9
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 51
112.0
116.5
104.8
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 52
112.0
116.5
104.8
4144 NKLP-1
132.00
4596*DFNCE YK
132.00 1
SINGLE 158
202.0
213.6
108.1
4096 GHAZI
132.00
4104*AIRPORT
132.00 1
SINGLE 238
202.0
213.5
110.7
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 268
112.0
113.4
101.8
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 273
112.0
112.2
100.7
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 279
112.0
112.0
100.4
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 293
112.0
113.0
101.4
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 294
112.0
112.8
101.1
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 296
112.0
112.1
100.5
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 297
112.0
112.4
100.7
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 299
112.0
111.9
100.2
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 305
112.0
111.9
100.2
4210 OKARA-C1
132.00
4876*OKARA-N
132.00 1
SINGLE 307
112.0
127.0
109.2
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 307
112.0
118.0
105.7
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 310
112.0
112.8
101.0
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 311
112.0
112.8
101.0
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 315
112.0
111.9
100.1
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 316
112.0
128.6
115.1
4217*DEPALPUR
132.00
4876 OKARA-N
132.00 1
SINGLE 322
112.0
132.6
119.2
4210*OKARA-C1
132.00
4876 OKARA-N
132.00 1
SINGLE 325
112.0
134.5
118.0
-------------------------------------------------------------------------------Due to the volume of the output, contingency list was omitted.
To overcome these (N-1) violations, more system additions were considered as follows.
1. Re-conductoring of loop line between KEL-IPP and Sarfraz nagar – Kasur T/Line
on rail conductor.
2. Re-conductoring of 132kV Lahore – Attabad 6Km T/Line on rail conductor with
Twin Bundled Rail Conductor.
3. Re-conductoring of 132kV NKLP-Defence-Ghazi approx.20 Km T/Line on rail
conductor with Twin Bundled Rail Conductor.
504760-01-A4
140
Disco Transmission Expansion Plan
National Power System Expansion Plan
4. A new D/C underground 1200mm2 XLPE cable from 132kV
Shadman
– Sunny View.
5. In/Out of 2nd Circuit of 132kV Saidpur-Iqbal Town Transmission Line at Iqbal
Town grid station for making Double In/Out at Iqbal Town grid station.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed LESCO base case for Year2020 with the above mentioned system reinforcements are shown in Appendix-6 (spread
over 9 Sheets).
7.1.31 “FESCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of FESCO by Year-2020 is 4,604 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], some voltage problems were recorded
within the FESCO system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
4356 BANDALN
132.00
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
5 1.0544 139.19
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
4290 BHOWANA
132.00
5 0.9316 122.97
5200 BHAKKAR
4485 AHMED PUR SI132.00
5 0.9430 124.48
5210 BEHAL
66.000
5 0.9405 62.071
66.000
5 0.9013 59.487
42901 T1
11.000
5 0.9196 10.116
42902 T2
11.000
5 0.9096 10.005
44521 T1
11.000
5 0.9403 10.344
44522 T2
11.000
5 0.9403 10.344
44841 T1
11.000
5 0.9328 10.261
44842 T2
11.000
5 0.9328 10.261
44851 T1
11.000
5 0.9186 10.105
44852 T2
11.000
5 0.9186 10.105
44904 T4
11.000
5 0.9350 10.285
45001 T1
11.000
5 0.9332 10.265
45002 T2
11.000
5 0.9179 10.097
45011 T1
11.000
5 0.9464 10.411
45502 T2
11.000
5 0.9346 10.281
45503 T3
11.000
5 0.9394 10.333
50461 T1
11.000
5 0.9205 10.126
50462 T2
11.000
5 0.9278 10.205
504760-01-A4
141
Disco Transmission Expansion Plan
National Power System Expansion Plan
50471 T1
11.000
5 0.9274 10.201
52001 T1
11.000
5 0.8191
9.010
52101 T1
11.000
5 0.8814
9.695
52102 T2
11.000
5 0.8928
9.821
54401 T1
11.000
5 0.9433 10.376
56902 T2
11.000
5 0.9331 10.265
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
401 M3-IND
220.00*
15
4290 BHOWANA
132.00*
5
4320 CHNIOT-I
132.00*
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
132.00
5
1
528.8
500.0
105.8
42901 T1
11.000
5
1
44.7
40.0
111.7
5
43201 T1
11.000
5
1
45.0
40.0
112.6
4323 CHNAB NAGAR 132.00*
5
43231 T1
11.000
5
1
26.4
26.0
101.4
4323 CHNAB NAGAR 132.00*
5
43232 T2
11.000
5
1
13.2
13.0
101.4
4338 KHURNWLA
132.00*
5
43383 T3
11.000
5
1
13.7
13.0
105.3
4339 MILLATRD
132.00*
5
43391 T1
11.000
5
1
29.5
26.0
113.3
4339 MILLATRD
132.00*
5
43392 T2
11.000
5
1
14.7
13.0
113.3
4380 FBD-TH-O
132.00*
5
43801 T1
11.000
5
1
44.4
40.0
111.1
4400 CHK.JMRA
132.00*
5
44001 T1
11.000
5
1
26.5
26.0
101.9
4400 CHK.JMRA
132.00*
5
44002 T2
11.000
5
1
26.5
26.0
101.9
4414 STIANA RD
132.00*
5
44141 T1
11.000
5
1
28.7
26.0
110.5
4420 AGR.UNIV
132.00*
5
44203 T3
11.000
5
1
29.2
26.0
112.4
4421 USMAN GANI
132.00*
5
44211 T1
11.000
5
1
33.3
26.0
127.9
4430 NAR.W.RD
132.00*
5
44303 T3
11.000
5
1
42.1
40.0
105.3
4440 JHANG.RD
132.00*
5
44402 T2
11.000
5
1
54.9
40.0
137.3
4440 JHANG.RD
132.00*
5
44403 T3
11.000
5
1
53.1
40.0
132.8
4452 AMIN PUR R
132.00*
5
44521 T1
11.000
5
1
15.2
13.0
117.2
4452 AMIN PUR R
132.00*
5
44522 T2
11.000
5
1
15.2
13.0
117.2
4478 T.T.SING
132.00*
5
44781 T3
11.000
5
1
40.8
40.0
102.1
4482 PIRMEHL
132.00*
5
44822 T2
11.000
5
1
41.4
40.0
103.4
4484 GM RAJA
132.00*
5
44841 T1
11.000
5
1
15.2
13.0
117.1
4484 GM RAJA
132.00*
5
44842 T2
11.000
5
1
15.2
13.0
117.1
4520 TNDLWALA
132.00*
5
45203 T3
11.000
5
1
40.1
40.0
100.1
4776 THERML-O
66.000*
5
47761 T1
11.000
5
1
14.3
13.0
110.3
5200 BHAKKAR
66.000
5
132.00*
5
1
41.1
40.0
102.6
5200 BHAKKAR
66.000*
5
52001 T1
11.000
5
1
24.5
13.0
188.3
5425 KIRANAHL
132.00*
5
54251 T1
11.000
5
1
29.0
26.0
111.5
5425 KIRANAHL
132.00
5
54252 T2
11.000*
5
1
28.9
26.0
111.1
5440 BHAMB
132.00*
5
54401 T1
11.000
5
1
42.5
40.0
106.3
5440 BHAMB
132.00*
5
54402 T2
11.000
5
1
41.2
40.0
103.0
5445 SARGODAC
132.00*
5
54451 T1
11.000
5
1
45.2
40.0
113.0
5445 SARGODAC
132.00*
5
54452 T2
11.000
5
1
45.1
40.0
112.6
5450 SGD2
132.00*
5
54502 T2
11.000
5
1
29.3
26.0
112.6
504760-01-A4
4317 M-3
7455 BHAKKAR
142
Disco Transmission Expansion Plan
National Power System Expansion Plan
5480 H.FAQIRN
132.00*
5
5720 H.FAQIRN
66.000
5
1
109.1
32.0
341.1
7455 BHAKKAR
132.00
5
7456 CHOKAZAM
132.00*
6
1
117.3
112.0
104.7
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), many system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Sr.No.
KV
Grid Station
Rinforcement Required
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
132
66
66
66
66
66
G.M Raja
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Satiana RD (KhanAugmentation of 20/26 MVA with 31.5/40 MVA T/F.
Kamlia
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Narwala Rd
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
T.T Sing
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Jhang City
11 KV 7.8 Mvar Capacitors
Thikri Wala
Augmentation 10/13 MVA T/F with 20/26 MVA
Jhang RD
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Ahmad Pur
Augmentation 10/13 MVA T/F with 20/26 MVA
Bhowana
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Bhamb
132 KV 40 Mvar capcitors
Bhamb
Extension of 20/26 MVA T/F with 2.4 Mvar Capacitors
Srg Second
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Kirana Hill
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Khurrian Wala Augmentation 10/13 MVA T/F with 20/26 MVA
Millat RD
Augmentation 10/13 MVA T/F with 20/26 MVA
Chenab Nagar Augmentation 10/13 MVA T/F with 20/26 MVA
Chiniot Ind.
Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Chak Jhumra Augmentation of 20/26 MVA with 31.5/40 MVA T/F.
Srg City
Extension of 20/26 MVA T/F 4.8 mvar capcitors
Usman‐i‐Ghani Augmentation 10/13 MVA T/F with 20/26 MVA
New Jhang Rd New Grid Station to Share the load of 132 KV Jhang Rd.
Bhakkar
Conversion from 66 KV Bhakkart to 132 KV Bhakkart Behal
Conversion from 66 KV Behal to 132 KV Behal
Jehanian Shah Conversion from 66 KV Jehanian Shah to 132 KVJehanian Shah
AdhiKot
Conversion from 66 KV A dhaiKot to 132 KV A dhaiKot
Chashma
Conversion from 66 KV Chashmatto 132 KV Chashma
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
504760-01-A4
143
Disco Transmission Expansion Plan
National Power System Expansion Plan
Out-of-Limits Bus Voltages:
Some low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 6
<-------- B U S -------->
4305 T-SCARP
132.00
0.86813
1.03628
1.10000
0.90000
SINGLE 6
4306 SCARP
132.00
0.86417
1.03343
1.10000
0.90000
SINGLE 6
4310 JRN.WALA
132.00
0.88794
1.00791
1.10000
0.90000
SINGLE 122
4492 JHANG-II
132.00
0.86478
1.01155
1.10000
0.90000
SINGLE 122
4500 KHEWA
132.00
0.88644
0.99973
1.10000
0.90000
SINGLE 199
5630 BARANA
132.00
0.89464
0.96159
1.10000
0.90000
SINGLE 204
5432 JAHANIAN SHA132.00
0.86622
0.99158
1.10000
0.90000
SINGLE 204
5440 BHAMB
132.00
0.80076
0.98022
1.10000
0.90000
SINGLE 204
5443 KOTSHAKR
132.00
0.79270
0.97613
1.10000
0.90000
SINGLE 204
5444 JAMALI BALOO132.00
0.78536
0.97217
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 6
: OPEN LINE FROM BUS 4305 [T-SCARP
132.00] TO BUS 4330 [NSHTBD-1
132.00] CKT 1
SINGLE 81
: OPEN LINE FROM BUS 4460 [SMNDRIRD
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 95
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4479 [TTSING.N
132.00] CKT 1
SINGLE 96
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4479 [TTSING.N
132.00] CKT 2
SINGLE 122
: OPEN LINE FROM BUS 4490 [JHANG
132.00] TO BUS 4492 [JHANG-II
132.00] CKT 1
SINGLE 199
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5425 [KIRANAHL
132.00] CKT 1
SINGLE 204
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5440 [BHAMB
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Some line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
4430*NAR.W.RD
132.00
4460 SMNDRIRD
132.00 1
SINGLE 81
112.0
116.7
104.7
4470 GOJRA
132.00
4479*TTSING.N
132.00 2
SINGLE 95
112.0
144.0
121.9
4470 GOJRA
132.00
4479*TTSING.N
132.00 1
SINGLE 96
112.0
144.0
121.9
5431 T-KOTLTH
132.00
5432*JAHANIAN SHA132.00 1
SINGLE 204
114.0
124.4
126.0
5440*BHAMB
SINGLE 204
114.0
103.3
113.1
5432 JAHANIAN SHA132.00
132.00 1
%
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 6
: OPEN LINE FROM BUS 4305 [T-SCARP
132.00] TO BUS 4330 [NSHTBD-1
132.00] CKT 1
SINGLE 81
: OPEN LINE FROM BUS 4460 [SMNDRIRD
132.00] TO BUS 4462 [FSD CITY
132.00] CKT 1
SINGLE 95
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4479 [TTSING.N
132.00] CKT 1
504760-01-A4
144
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 96
: OPEN LINE FROM BUS 4470 [GOJRA
132.00] TO BUS 4479 [TTSING.N
132.00] CKT 2
SINGLE 122
: OPEN LINE FROM BUS 4490 [JHANG
132.00] TO BUS 4492 [JHANG-II
132.00] CKT 1
SINGLE 199
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5425 [KIRANAHL
132.00] CKT 1
SINGLE 204
: OPEN LINE FROM BUS 5420 [LUDEWALA
132.00] TO BUS 5440 [BHAMB
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, three system additions were considered as follows.
Sr.No. Rinforcement Required
1
2
3
Re‐Conductring Double Cct from Lynx to Greely from 132 KV Ludewal ‐
Kudlathi ‐Jhanian shah‐ Bhamb.
24 Mvar Capacitors at 132 Kv J/wala Rd New single Circuit on Rail from UAE Gen.‐Nishatabad
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed FESCO base case for Year2020 with the above mentioned system reinforcements are shown in Appendix-6 (spread
over 5 Sheets).
7.1.32 “MEPCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of MEPCO by Year-2020 is 4,902 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], some low voltage problems were
recorded within the MEPCO system as given below.
As mentioned in the MEPCO-2015 and 2016 analyses, the upper voltage limit for
MEPCO system was set to 1.08 pu instead of 1.05 pu due to the radial nature of the
system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
504760-01-A4
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
145
V(PU)
V(KV)
Disco Transmission Expansion Plan
National Power System Expansion Plan
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
6120 PAKPATAN
132.00
6 0.9422 124.37
6150 SH.FAZAL
132.00
6 0.9499 125.39
6162 BREWLA-O
132.00
6 0.9419 124.33
6164
132.00
6 0.9435 124.54
6191 HOTA
132.00
6 0.9487 125.23
6200 QABULA
132.00
6 0.9437 124.57
6210 SAHUKA
132.00
6 0.9250 122.10
6512 FAQIRWLI
132.00
6 0.9393 123.98
6513 T FAQ WALI
132.00
6 0.9401 124.09
6521 FORTABAS
132.00
6 0.9277 122.46
7010 KACHAKHU
132.00
6 0.9487 125.22
7055 T-C.211
132.00
6 0.9339 123.28
7060 CHAK.211
132.00
6 0.9303 122.80
7070 MAILSI
132.00
6 0.9275 122.43
7147 KARORPCA
132.00
6 0.9411 124.22
7149 DUNYAPUR
_1132.00
6 0.9411 124.22
7185 KHANBELA
132.00
6 0.9444 124.66
7288 SHUJABAD
132.00
6 0.9314 122.95
7289 JALALPWL
132.00
6 0.9054 119.51
7290 MESCO
132.00
6 0.9445 124.68
7360 JATOIJNB
132.00
6 0.9447 124.70
7370 KHRPRSDT
132.00
6 0.9447 124.70
7784 H RAJKAN
132.00
6 0.9272 122.39
T.BREWALA
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
500 MULTAN
220.00*
15
6666 MULTAN-N
132.00
6
1
604.6
500.0
120.9
520 PIRNGHAB
220.00*
15
7100 P.GAIB-1
132.00
6
1
550.1
254.0
216.6
520 PIRNGHAB
220.00*
15
7109 P.GAIB-2
132.00
6
2
164.2
160.0
102.6
540 KAPCO220
220.00
15
7300 KAPCO
132.00*
6
1
559.4
400.0
139.8
6150 SH.FAZAL
132.00*
6
61501 SH.FAZAL T-111.000
6
1
28.3
26.0
108.8
6150 SH.FAZAL
132.00*
6
61502 SH.FAZAL T-211.000
6
1
28.4
26.0
109.2
6175 LUDDEN
132.00*
6
61751 LUDDEN T-1
11.000
6
1
14.3
13.0
109.6
6200 QABULA
132.00*
6
62002 QABULA T-2
11.000
6
1
26.0
26.0
100.2
6210 SAHUKA
132.00*
6
62101
SAHUKA T-1 11.000
6
1
27.5
26.0
105.7
6220 HASILPUR
132.00*
6
62202 HASILPUR T-211.000
6
1
29.0
26.0
111.4
6220 HASILPUR
132.00*
6
62203 HASILPUR T-311.000
6
1
29.1
26.0
111.8
6230 CHISTIAN
132.00*
6
62301 CHISTIAN T-111.000
6
1
28.5
26.0
109.8
6230 CHISTIAN
132.00*
6
62302 CHISTIAN T-211.000
6
1
28.2
26.0
108.5
7006 HEAD SIDHNAI132.00*
6
70061 H SIDNAI T-111.000
6
1
15.0
13.0
115.8
7050 JEHANIAN
132.00*
6
70502 JEHANIAN T-211.000
6
1
50.7
40.0
126.7
7110 BASTIMLK
132.00*
6
71102 BASTIMLK T-211.000
6
1
41.0
40.0
102.5
7120 LODHRAN
132.00*
6
71202 LODHRAN T-2 11.000
6
1
26.4
26.0
101.7
7120 LODHRAN
132.00*
6
71203 LODHRAN T-3 11.000
6
1
26.4
26.0
101.7
7150 SAMASATA
132.00*
6
71501 SAMASATA T-111.000
6
1
13.8
13.0
106.2
7210 MWQRSHIA
132.00*
6
72101 MWQRSHIA T-111.000
6
1
31.0
26.0
119.3
504760-01-A4
146
Disco Transmission Expansion Plan
National Power System Expansion Plan
7230 SADIQABD
132.00*
6
72303 SADIQABD T-311.000
6
1
27.1
26.0
104.0
7235 NAWAZABD
132.00*
6
72352 NAWAZAB T-2 11.000
6
1
27.5
26.0
105.9
7250 MN.KH.RD
132.00*
6
72501 MN.KH.RD T-111.000
6
1
26.2
26.0
100.8
7250 MN.KH.RD
132.00*
6
72503 MN.KH.RD T-311.000
6
1
28.0
26.0
107.6
7270 MLN-IND
132.00
6
6
1
114.6
112.0
102.3
7280 MN.VR.RD
132.00*
6
72802 MN.VR.RD T-211.000
6
1
40.5
40.0
101.2
7285 QASIMPUR
132.00*
6
72852 QASIMPUR T-211.000
6
1
26.9
26.0
103.3
7285 QASIMPUR
132.00*
6
72853 QASIMPUR T-311.000
6
1
28.3
26.0
108.7
7287 M.JAILRD
132.00*
6
72871 M.J RD T-1
11.000
6
1
27.7
26.0
106.6
7287 M.JAILRD
132.00*
6
72872 M.J.RD T-2
11.000
6
1
26.5
26.0
101.8
7288 SHUJABAD
132.00*
6
72881 SHUJABAD T-111.000
6
1
20.0
13.0
153.9
7289 JALALPWL
132.00*
6
72891 JALALPWL T-111.000
6
1
27.4
26.0
105.5
7289 JALALPWL
132.00*
6
72892 JALALPWL T-211.000
6
1
26.8
26.0
103.1
7290 MESCO
132.00*
6
72902 MESCO T-2
11.000
6
1
40.2
40.0
100.6
7328 KBGASHER
132.00*
6
73281 KBGASHER T-111.000
6
1
37.2
26.0
143.2
7590 SKHISRWR
132.00*
6
75901 SKHISRWR T-111.000
6
1
13.0
13.0
100.0
7925 CHOTI
132.00*
6
79251 CHOTI T-1
6
1
14.7
13.0
112.7
7290 MESCO
132.00*
11.000
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Sub Station /
Transformer
132 Kv H Sidnai T1
2020
Proposed
MVA
Augmentation
13 to 26
132 Kv Sakhi Sarwar T1
Augmentation
13 to 26
132 Kv Choti T1
Augmentation
13 to 26
132 Kv Noor Pur T2
Augmentation
13 to 26
132 Kv Sh. Fazal T1
Augmentation
26 to 40
132 Kv Qabula T1
Augmentation
26 to 40
132 Kv Sahuka T1
Augmentation
26 to 40
132 Kv Hasilpur T1
Augmentation
26 to 40
132 Kv Chistian T1
Augmentation
26 to 40
132 Kv Chistian T2
Augmentation
26 to 40
132 Kv Nawazabad T1
132 Kv Khanewal Road
Augmentation
26 to 40
Augmentation
26 to 40
132 Kv Jail Road T1
Augmentation
26 to 40
132 Kv MESCO T2
Augmentation
40 to 60
132 Kv J. P. Wala
Extension
26
Transmission Line
Additions/Modification
132 Kv MESCO to 132 Kv Ind. State
Lynex to Greely
504760-01-A4
147
KM
20 Km
Disco Transmission Expansion Plan
National Power System Expansion Plan
No.
Capacitors
(11 kV)
Substation
132 Kv J. P. Wala
132 Kv Fort Abbas
132 Kv Jehanian
132 Kv H Rajkan
1
2
3
4
Capacitors
(132 kV)
4.8 MVAR
-
2.4 MVAR
-
-
36 MVAR
4.2 MVAR
-
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse was recorded.
Out-of-Limits Bus Voltages:
One voltage problem was recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 6
<-------- B U S -------->
6182 KAMIRWALA
132.00
0.87973
0.97465
1.10000
0.90000
SINGLE 85
7006 HEAD SIDHNAI132.00
0.79948
0.97259
1.10000
0.90000
SINGLE 85
7008 M VIRK
132.00
0.89763
0.98540
1.10000
0.90000
SINGLE 85
7010 KACHAKHU
132.00
0.86724
0.95877
1.10000
0.90000
SINGLE 85
7020 KHANEWAL
132.00
0.89763
0.98540
1.10000
0.90000
SINGLE 85
7025 J.MARYLA
_1132.00
0.89779
0.98558
1.10000
0.90000
SINGLE 85
7030 KABIRWLA
132.00
0.79948
0.97259
1.10000
0.90000
SINGLE 85
7032 MP.PAHOR
132.00
0.80338
0.97733
1.10000
0.90000
SINGLE 90
7006 HEAD SIDHNAI132.00
0.83705
0.97758
1.10000
0.90000
SINGLE 90
7030 KABIRWLA
132.00
0.87404
1.00543
1.10000
0.90000
SINGLE 90
7032 MP.PAHOR
132.00
0.87180
1.00422
1.10000
0.90000
SINGLE 97
7289 JALALPWL
132.00
0.89213
0.97670
1.10000
0.90000
SINGLE 110
7130 BU.JADID
132.00
0.87850
1.00350
1.10000
0.90000
SINGLE 114
7170 AHMDPR.E
132.00
0.89107
1.00369
1.10000
0.90000
SINGLE 114
7180 FEROZA
132.00
0.83083
0.98139
1.10000
0.90000
SINGLE 114
7185 KHANBELA
132.00
0.82008
0.97368
1.10000
0.90000
SINGLE 114
7974 UCH.SHRF
132.00
0.86940
0.98830
1.10000
0.90000
SINGLE 114
7981 ALI PUR
132.00
0.85833
0.98086
1.10000
0.90000
SINGLE 115
7170 AHMDPR.E
132.00
0.89107
1.00369
1.10000
0.90000
SINGLE 115
7180 FEROZA
132.00
0.83083
0.98139
1.10000
0.90000
SINGLE 115
7185 KHANBELA
132.00
0.82008
0.97368
1.10000
0.90000
SINGLE 115
7974 UCH.SHRF
132.00
0.86940
0.98830
1.10000
0.90000
SINGLE 115
7981 ALI PUR
132.00
0.85833
0.98086
1.10000
0.90000
SINGLE 161
7360 JATOIJNB
132.00
0.89583
0.95422
1.10000
0.90000
504760-01-A4
148
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 161
7370 KHRPRSDT
132.00
0.89583
0.95422
1.10000
0.90000
SINGLE 208
7462 MDC-DGK
132.00
0.87824
1.01013
1.10000
0.90000
SINGLE 210
7463 CPC-DGK
132.00
0.87906
1.00971
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 6
: OPEN LINE FROM BUS 6070 [YOUSFWLA
132.00] TO BUS 6182 [KAMIRWALA
132.00] CKT 1
SINGLE 85
: OPEN LINE FROM BUS 7030 [KABIRWLA
132.00] TO BUS 7109 [P.GAIB-2
132.00] CKT 1
SINGLE 90
: OPEN LINE FROM BUS 7030 [KABIRWLA
132.00] TO BUS 7109 [P.GAIB-2
132.00] CKT 2
SINGLE 97
: OPEN LINE FROM BUS 7100 [P.GAIB-1
132.00] TO BUS 7125 [LAR
132.00] CKT 1
SINGLE 110
: OPEN LINE FROM BUS 7130 [BU.JADID
132.00] TO BUS 7140 [BHAWALPR
132.00] CKT 1
SINGLE 114
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7170 [AHMDPR.E
132.00] CKT 1
SINGLE 115
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7170 [AHMDPR.E
132.00] CKT 2
SINGLE 161
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7330 [MZFRGARH
132.00] CKT 1
SINGLE 208
: OPEN LINE FROM BUS 7462 [MDC-DGK
132.00] TO BUS 7909 [D.G.KHAN II 132.00] CKT 1
SINGLE 210
: OPEN LINE FROM BUS 7463 [CPC-DGK
132.00] TO BUS 7909 [D.G.KHAN II 132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two marginal line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
6070 YOUSFWLA
132.00
6182*KAMIRWALA
132.00 1
SINGLE 5
112.0
110.2
105.4
%
6070 YOUSFWLA
132.00
6180*ARIFWALA
132.00 2
SINGLE 6
112.0
110.6
109.1
6169 VEHARI-N
132.00
6170*VEHARI-O
132.00 4
SINGLE 34
112.0
121.3
107.8
6169 VEHARI-N
132.00
6170*VEHARI-O
132.00 3
SINGLE 35
112.0
121.3
107.8
6419 L.SOHANRA
132.00
7147*KARORPCA
132.00 2
SINGLE 64
112.0
112.0
106.4
6419 L.SOHANRA
132.00
7147*KARORPCA
132.00 1
SINGLE 65
112.0
112.0
106.4
6666 MULTAN-N
132.00
7250*MN.KH.RD
132.00 1
SINGLE 69
404.0
411.9
100.3
7050 JEHANIAN
132.00
7075*MUKHDM.R
132.00 1
SINGLE 96
112.0
122.9
109.8
7139 B.W.P-N
132.00
7145*BPUR CANTT
132.00 2
SINGLE 116
202.0
220.2
107.0
7139 B.W.P-N
132.00
7145*BPUR CANTT
132.00 1
SINGLE 117
202.0
220.2
107.0
7140*BHAWALPR
132.00
7145 BPUR CANTT
132.00 2
SINGLE 118
184.0
196.0
105.2
7140*BHAWALPR
132.00
7145 BPUR CANTT
132.00 1
SINGLE 119
184.0
196.0
105.2
7250 MN.KH.RD
132.00
7260*MN.BS.RD
132.00 1
SINGLE 141
112.0
116.1
105.1
7250 MN.KH.RD
132.00
7260*MN.BS.RD
132.00 2
SINGLE 141
112.0
116.1
105.1
7321 T-GUJRAT
132.00
7330*MZFRGARH
132.00 1
SINGLE 161
112.0
111.1
103.9
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 5
: OPEN LINE FROM BUS 6070 [YOUSFWLA
132.00] TO BUS 6180 [ARIFWALA
132.00] CKT 2
SINGLE 6
: OPEN LINE FROM BUS 6070 [YOUSFWLA
132.00] TO BUS 6182 [KAMIRWALA
132.00] CKT 1
SINGLE 34
: OPEN LINE FROM BUS 6169 [VEHARI-N
132.00] TO BUS 6170 [VEHARI-O
132.00] CKT 3
SINGLE 35
: OPEN LINE FROM BUS 6169 [VEHARI-N
132.00] TO BUS 6170 [VEHARI-O
132.00] CKT 4
SINGLE 64
: OPEN LINE FROM BUS 6419 [L.SOHANRA
132.00] TO BUS 7147 [KARORPCA
132.00] CKT 1
SINGLE 65
: OPEN LINE FROM BUS 6419 [L.SOHANRA
132.00] TO BUS 7147 [KARORPCA
132.00] CKT 2
SINGLE 69
: OPEN LINE FROM BUS 6666 [MULTAN-N
132.00] TO BUS 7250 [MN.KH.RD
132.00] CKT 2
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149
Disco Transmission Expansion Plan
National Power System Expansion Plan
SINGLE 96
: OPEN LINE FROM BUS 7050 [JEHANIAN
132.00] TO BUS 7100 [P.GAIB-1
132.00] CKT 2
SINGLE 116
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 1
SINGLE 117
: OPEN LINE FROM BUS 7139 [B.W.P-N
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 2
SINGLE 118
: OPEN LINE FROM BUS 7140 [BHAWALPR
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 1
SINGLE 119
: OPEN LINE FROM BUS 7140 [BHAWALPR
132.00] TO BUS 7145 [BPUR CANTT
132.00] CKT 2
SINGLE 141
: OPEN LINE FROM BUS 7250 [MN.KH.RD
132.00] TO BUS 7255 [WAPDATWN
132.00] CKT 1
SINGLE 161
: OPEN LINE FROM BUS 7300 [KAPCO
132.00] TO BUS 7330 [MZFRGARH
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
No.
Transmission Line
Additions/Modification
KM
1
Yousafwala to Kamirwala
Lynx to Greelay
51
2
Yousafwala to Arifwala
Lynx to Greelay
41
3
Multan New to Kh. Road
Rail (New Line)
1.7
4
Bahawalpur to B Pur Cantt
Greelay to Rail
6
5
Muzafarghar to T‐Gujrat
Lynx to Greelay
28
6
Bahawalpur New to A P East
Rail (3rd Circuit)
50
7
Kabirwala to P Gaib‐2
Lynx to Greelay
36
No.
Substation
Capacitors
1
132 kv Capacitor Khanewal
48 MVAR
2
132 kv Capacitor Kabirwala
48 MVAR
3
132 kv Capacitor J P Wala
48 MVAR
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed MEPCO base case for Year2020 with the above mentioned system reinforcements are given in Appendix-6 (spread
over 8 Sheets).
7.1.33 “HESCO & SEPCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of HESCO and SEPCO by Year-2020 is 3,596 MW.
504760-01-A4
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National Power System Expansion Plan
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.08 pu], a few low voltage problems were
recorded within the HESCO and SEPCO systems as given below. As mentioned in the
HESCO and SEPCO 2016 and 2018 analyses, the upper voltage limit for was set to 1.08
pu instead of 1.05 pu due to the coverage and radial nature of the system.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0800:
BUS# X-- NAME --X BASKV AREA
95161 1
11.000
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
7 1.0874 11.962
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
8110 KOT DIJI
132.00
7 0.9445 124.68
8120 PIRJOGOTH
132.00
7 0.9428 124.45
8125 KUNB
132.00
7 0.9411 124.22
8135 CHONDKO
132.00
7 0.9389 123.93
8310 NARA C-1
66.000
7 0.5168 34.111
8320 NARA C-2
66.000
7 0.4431 29.245
8342 THARI MIR WA132.00
7 0.9449 124.72
80802 2
11.000
7 0.9376 10.314
80901 1
11.000
7 0.9242 10.166
80902 2
11.000
7 0.9430 10.373
81001 1
11.000
7 0.9083
9.992
81002 2
11.000
7 0.9098 10.008
81003 3
11.000
7 0.9043
9.947
81101 1
11.000
7 0.9080
81201 1
11.000
7 0.9080
9.988
81202 2
11.000
7 0.9237 10.161
81251 1
11.000
7 0.9072
9.979
81303 3
11.000
7 0.9145 10.060
81351 1
11.000
7 0.9168 10.085
81411 1
11.000
7 0.9276 10.204
81412 2
11.000
7 0.9155 10.070
81901 1
11.000
7 0.9215 10.137
81902 2
11.000
7 0.9215 10.137
82221 1
11.000
7 0.9445 10.390
82251 1
11.000
7 0.9268 10.195
82301 1
11.000
7 0.9352 10.287
82302 2
11.000
7 0.9285 10.214
82311 1
11.000
7 0.9364 10.301
82312 2
11.000
7 0.9480 10.428
82313 3
11.000
7 0.9194 10.114
82371 1
11.000
7 0.9164 10.080
82372 2
11.000
7 0.9213 10.135
82373 3
11.000
7 0.9291 10.220
82401 1
11.000
7 0.9431 10.374
82402 2
11.000
7 0.9381 10.319
82451 1
11.000
7 0.9280 10.208
82452 2
11.000
7 0.9280 10.208
82511 1
11.000
7 0.9425 10.368
82521 1
11.000
7 0.9482 10.430
83101 1
11.000
7 0.4600
5.060
83102 2
11.000
7 0.4837
5.321
83201 1
11.000
7 0.4257
4.683
83202 2
11.000
7 0.4327
4.760
83421 1
11.000
7 0.9261 10.188
83422 2
11.000
7 0.9261 10.188
84592 2
11.000
7 0.9496 10.445
9.988
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
504760-01-A4
151
Disco Transmission Expansion Plan
National Power System Expansion Plan
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
700 DADU
AREA
220.00*
15
8050 K.P.MEHR
132.00*
7
8080 PANUAKIL
132.00*
8080 PANUAKIL
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
132.00
7
1
562.0
480.0
117.1
80501 1
11.000
7
1
27.1
26.0
104.4
7
80801 1
11.000
7
1
28.4
26.0
109.0
132.00*
7
80802 2
11.000
7
1
27.0
26.0
103.7
8090 ROHRI
132.00*
7
66.000
7
1
45.6
37.5
121.7
8090 ROHRI
132.00*
7
80901 1
11.000
7
1
26.7
26.0
102.8
8140 KANDIARO
132.00*
7
81403 3
11.000
7
1
26.7
26.0
102.6
8141 MAHRABPR
132.00*
7
81412 2
11.000
7
1
13.1
13.0
100.5
8150 N.FEROZE
132.00*
7
81503 3
11.000
7
1
26.3
26.0
101.3
8190 KANDH KOT
132.00*
7
81901 1
11.000
7
1
28.3
26.0
108.8
8190 KANDH KOT
132.00*
7
81902 2
11.000
7
1
28.3
26.0
108.8
8205 JACOBABAD
132.00*
7
82051 1
11.000
7
1
28.9
26.0
111.3
8205 JACOBABAD
132.00*
7
82052 2
11.000
7
1
29.6
26.0
113.7
8225 LAKHI
132.00*
7
82251 1
11.000
7
1
14.1
13.0
108.2
8237 SUKURSTE
132.00*
7
82373 3
11.000
7
1
26.2
26.0
100.9
8240 RATODERO
132.00*
7
82401 1
11.000
7
1
27.0
26.0
103.7
8240 RATODERO
132.00*
7
82402 2
11.000
7
1
14.2
13.0
109.4
8241 MIROKHAN
132.00*
7
82411 1
11.000
7
1
14.3
13.0
110.0
8250 LARKANA-2
132.00*
7
82501 1
11.000
7
1
44.8
40.0
112.0
8250 LARKANA-2
132.00*
7
82502 2
11.000
7
1
45.9
40.0
114.7
8280 DADU OLD
132.00*
7
82801 1
11.000
7
1
41.9
40.0
104.7
8341 RASULABD
132.00*
7
83411 1
11.000
7
1
14.4
13.0
111.0
8341 RASULABD
132.00*
7
83412 2
11.000
7
1
14.4
13.0
111.0
9002 DAULTPUR
132.00*
7
90022 2
11.000
7
1
13.1
13.0
100.8
9040 SANGHAR
132.00*
7
90401 1
11.000
7
1
26.8
26.0
103.2
9090 HALAROAD
132.00*
7
90901 1
11.000
7
1
40.3
40.0
100.8
9090 HALAROAD
132.00*
7
90903 3
11.000
7
1
28.7
26.0
110.6
9100 TANDOJAM
132.00*
7
91001 1
11.000
7
1
15.2
13.0
117.0
9100 TANDOJAM
132.00*
7
91002 2
11.000
7
1
15.2
13.0
117.0
9130 MIRPURKHAS-1132.00*
7
66.000
7
1
17.2
16.0
107.2
9150 PHULLELI
132.00*
7
91503 3
11.000
7
1
44.7
40.0
111.8
9160 HYDNTPS
132.00*
7
91601 1
11.000
7
1
42.7
40.0
106.8
9160 HYDNTPS
132.00*
7
91602 2
11.000
7
1
40.7
40.0
101.8
9180 LATIFABAD
132.00*
7
91801 1
11.000
7
1
42.0
40.0
105.1
9180 LATIFABAD
132.00*
7
91802 2
11.000
7
1
42.0
40.0
105.1
9180 LATIFABAD
132.00*
7
91803 3
11.000
7
1
46.1
40.0
115.2
9190 KOTRI SITE
132.00*
7
91901 1
11.000
7
1
28.0
26.0
107.8
9220 T.M.KHAN
132.00*
7
92201 1
11.000
7
1
27.6
26.0
106.0
9290 SUJAWAL
132.00*
7
92901 1
11.000
7
1
14.2
13.0
109.5
9290 SUJAWAL
132.00*
7
92902 2
11.000
7
1
14.1
13.0
108.4
9300 LADIUN
132.00*
7
93001 1
11.000
7
1
6.6
6.3
105.3
9410 QASIMABAD-I 132.00*
7
94103 3
11.000
7
1
42.2
40.0
105.5
9410 QASIMABAD-I 132.00*
7
94104 4
11.000
7
1
42.2
40.0
105.5
9415 QASIMABAD-II132.00*
7
94151 1
11.000
7
1
32.1
26.0
123.3
9415 QASIMABAD-II132.00*
7
94152 2
11.000
7
1
32.1
26.0
123.3
9430 GULSHN SHBZ 132.00*
7
94302 2
11.000
7
1
14.1
13.0
108.1
9471 MATLI NEW
132.00*
7
94711 1
11.000
7
1
13.4
13.0
103.1
9526 DIPLO
66.000*
7
95261 1
11.000
7
1
2.7
2.5
109.3
504760-01-A4
8170 DADU NEW
8300 ROHRI
9542 MIRPURKH
152
Disco Transmission Expansion Plan
National Power System Expansion Plan
9536 JAMRAOHD
66.000*
7
95361 1
11.000
7
1
5.4
5.0
108.2
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), some system reinforcements were
added as system expansions and to solve the (N-0) violations, as follows.
Under HESCO:
1. Augmentation of T-2 Power Transformer from 13 to 20/26 MVA at 132KV Grid
Station Sanghar (9040).
2. Add 2.4 MVAR at T-3 of 220/132KV Grid Station Hala Road (9090).
3. Augmentation of T-1 Power Transformer from 13 to 20/26 MVA at 132KV Grid
Station Tando Jam (9100).
4. Augmentation of 132/66KV Power Transformer from 16 to 37.5 MVA Power
Transformer at 132KV Grid Station MirpurKhas-1 (9130), this Transformer will be
turned spare from 132KV Grid Station Larkana-2.
5. Augmentation of T-1 Power Transformer from 26 to 40 MVA at 132KV Grid
Station Phuelleli (9150).
6. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station NTPS (9160).
7. Shifting of 12 MW Load (05 MW at 132KV Grid Stations Ghanghra Mori 9095 &
07 MW at NTPS, 9160) + addition of 1.2 MVAR capacitor bank at Latifabad Grid
Station, 9180).
8. Augmentation of T-2 Power Transformer from 13 to 26 MVA at 132KV Grid
Station Kotri Site (9190).
9. Augmentation of T-2 Power Transformer from 13 to 26 MVA at 132KV Grid
Station T.M Khan (9220).
10. Augmentation of both Power Transformers from 13 to 26 MVA at 132KV Sujawal
Grid Station (9290).
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
11. Augmentation of T-1 6.3 MVA Power Transformer with 10/13 at 132KV Grid
Station Ladiun (9300).
12. 10 MW load shifted from 132KV Grid Station Qasimabad (9410) to 132KV Grid
Station Hill Top (9411).
13. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station Qasimabad-II
(9415).
14. Augmentation of T-1 13 MVA Power Transformer with 20/26 at 132KV Grid
Station Gulishan-e-Shahbaz (9430).
15. Addition of 2.4 MVAR capacitor Bank at T-1 of 132KV Grid Station Matli New
(9471).
16. Augmentation of T-1 2.5 MVA Power Transformer with 5 MVA at 66Kv Grid
Station Diplo (9526), this Transformer will be turned spare from 66KV Grid
Station Jamaro Head (9536).
17. Augmentation of T-1 5 MVA Power Transformer with 10/13 MVA at 66KV Grid
Station Jamaro Head (9536).
Under SEPCO:
1. Conversion of 66KV Grid Station Nara-2, into 132KV voltage level with 1x10/13
MVA Power Transformer (8320 to 8321).
2. Addition of Second 20/26 MVA Power Transformer at 132KV Grid Station K.P
Meher (8050).
3. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station Pano Akil
(8080).
4. Increase capacitor from 1.2 MVAR to 2.4 MVAR at T-1 of 132KV Grid Station
Rohri (8090).
5. Add 2.4 MVAR capacitor bank at T-3 of 132KV Grid Station Kandario (8140).
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Disco Transmission Expansion Plan
National Power System Expansion Plan
6. Add 3.6 MVAR capacitor bank at T-3 of 132KV Grid Station Naushro Feroze
(8150).
7. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station Kandh Kot
(8190).
8. Addition of 3rd 20/26 MVA Power Transformer at 132KV Grid Station JacobabadI (8205).
9. Add 2.4 MVAR capacitor bank at T-1 of 132KV Grid Station Lakhi (8225).
10. Add 2.4 MVAR capacitor bank at T-3 of 132KV Grid Station Sukkur Site (8237).
11. Augmentation of T-2 Power Transformer from 10/13 MVA to 20/26 MVA at
132KV Grid Station Ratodero (8240).
12. Addition of Second 10/13 MVA Power Transformer at 132KV Grid Station Miro
khan (8241).
13. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station Larkana-2
(8250).
14. Addition of 3rd 40 MVA Power Transformer at 132KV Grid Station Dadu Old
(8280).
15. Augmentation of T-1 Power Transformer from 10/13 MVA to 20/26 MVA at
132KV Grid Station Rasoolabad (8341).
16. Add 2.4 MVAR capacitor bank at T-2 of 132KV Grid Station Doultpur (9002).
17. Addition of 12 MVAR capacitor bank at 66KV Nara-I Grid Station (8310). This has
already been proposed in year, 2015.
18. Add 3.00 MVAR capacitor bank at T-2 of 132KV Grid Station Mahrabpur.
19. Add 3.6 MVAR at T-1 of 132KV Grid Station Nara-2.
20. Increase Capacitor from 1.8 to 3.6 MVAR at Chondko Grid Station.
21. Add 2.4 MVAR at T-1 of 132KV Grid Station Kunb.
22. Increase capacitor from 2.4 to 4.8 MVAR at T-2 of 132KV Grid Station Khairpur.
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23. Increase capacitor from 1.2 to 3 MVAR at T-1 of 132KV Grid Station Mahrabpur.
24. Increase capacitor from 2.4 to 6 MVAR at T-1 of 132KV Grid Station Khairpur.
25. Increase capacitor from 1.2 to 7.2 MVAR at T-2 of 132KV Grid Station Khairpur.
26. Add 9.0 MVRA capacitor at 132VK Grid Station at T-3 of 132KV Khairpur Grid
Station.
27. Increase capacitor from 4.8 to 9.0 MVAR at T-1 of 132Kv Grid Station Pir Jo
Goth.
28. Increase capacitor from 2.4 to 9.0 MVAR at T-1 of 132Kv Grid Station Sukkur
Site.
29. Increase capacitor from 1.2 to 3.6 at 1t T-1 of 132KV Grid Station Karampur.
With the above additions, no voltage or line overloading problems were recorded under
(N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
No severe line outages would lead to area collapse were recorded.
Out-of-Limits Bus Voltages:
Some voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 77
<-------- B U S -------->
8210 KARAMPUR
132.00
0.88918
1.01899
1.10000
0.90000
SINGLE 109
8251 QAMBER
132.00
0.87821
0.98301
1.10000
0.90000
SINGLE 109
8252 WARAH
132.00
0.86155
0.97014
1.10000
0.90000
SINGLE 136
9020 N.S.SNGR
132.00
0.89192
0.98772
1.10000
0.90000
SINGLE 136
9025 JAM SAHIB
132.00
0.88821
0.98449
1.10000
0.90000
SINGLE 187
9494 SAMARO
66.000
0.88115
1.03775
1.10000
0.90000
SINGLE 187
9506 PITHORO
66.000
0.86492
1.02458
1.10000
0.90000
SINGLE 187
9595 KUNRI
66.000
0.89046
1.02516
1.10000
0.90000
SINGLE 273
9515 T-KALOI
66.000
0.85451
1.04389
1.10000
0.90000
SINGLE 273
9516 KALOI
66.000
0.84117
1.03818
1.10000
0.90000
SINGLE 273
9518 PANGIRO
66.000
0.85929
1.04351
1.10000
0.90000
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CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 77
: OPEN LINE FROM BUS 8210 [KARAMPUR
132.00] TO BUS 8220 [SHIKARPR
132.00] CKT 1
SINGLE 109
: OPEN LINE FROM BUS 8251 [QAMBER
132.00] TO BUS 8256 [LARKANA-3
132.00] CKT 1
SINGLE 136
: OPEN LINE FROM BUS 9010 [NAWABSHAH
132.00] TO BUS 9020 [N.S.SNGR
132.00] CKT 1
SINGLE 187
: OPEN LINE FROM BUS 9140 [SAMARO
132.00] TO BUS 9494 [SAMARO
66.000] CKT 1
SINGLE 273
: OPEN LINE FROM BUS 9514 [NOUKOT
66.000] TO BUS 9515 [T-KALOI
66.000] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
A few line overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
8000 GUDDU-1
132.00
8185*KASHMORE
132.00 2
SINGLE 2
112.0
130.2
111.8
%
8000 GUDDU-1
132.00
8185*KASHMORE
132.00 1
SINGLE 3
112.0
130.1
111.7
8029 LIBERTY
132.00
8040*MIRPUR M
132.00 1
SINGLE 9
112.0
129.2
113.3
8089 ROHRI-NW
132.00
8095*SHAH LUDHANI132.00 1
SINGLE 21
112.0
113.9
104.1
8241 MIROKHAN
132.00
8485*SHADADKT
132.00 1
SINGLE 109
112.0
107.8
103.6
9090 HALAROAD
132.00
9150*PHULLELI
132.00 1
SINGLE 170
112.0
133.7
114.6
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 2
: OPEN LINE FROM BUS 8000 [GUDDU-1
132.00] TO BUS 8185 [KASHMORE
132.00] CKT 1
SINGLE 3
: OPEN LINE FROM BUS 8000 [GUDDU-1
132.00] TO BUS 8185 [KASHMORE
132.00] CKT 2
SINGLE 9
: OPEN LINE FROM BUS 8029 [LIBERTY
132.00] TO BUS 8040 [MIRPUR M
132.00] CKT 2
SINGLE 21
: OPEN LINE FROM BUS 8089 [ROHRI-NW
132.00] TO BUS 8100 [KHAIRPUR
132.00] CKT 2
SINGLE 109
: OPEN LINE FROM BUS 8251 [QAMBER
132.00] TO BUS 8256 [LARKANA-3
132.00] CKT 1
SINGLE 170
: OPEN LINE FROM BUS 9095 [GHANGHRA MOR132.00] TO BUS 9159 [HYD-TMRD
132.00] CKT 1
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
Under HESCO:
1. Second circuit from 220/132KV Grid Station New Hala (9090) to 132KV Grid
Station Phuelleli (9150).
2. Install 12 MVAR capacitor bank at 132Kv Grid Station N.S Sanghar Road (9020),
Grid Station side.
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3. Install second 132/66KV Power Transformer (40MVA) at Samaro Grid Station
(9140), this Transformer will be turned spared from 132KV Grid Station Larkana2.
4. Install 20.22 MVAR (equal to 24 MVAR) capacitor Bank, at 132KV Grid Station
Tando Ghulam Ali (9475), Grid Station side.
5. Install 6.00 MVAR switched shunt at T-1 of 66KV Grid Station Kaloi (9516).
6. Install 3.60 MVAR switched shunt at T-1 of 66KV Grid Station Pangrio (9518).
Under SEPCO:
1. Second Circuit stringing from Liberty Power House (8029) to 132KV Grid Station
Mirpur Mathelo (8040).
2. Reconductroing of both circuits from 132KV Grid Station New Rohri (8089) to
132KV Grid Station Rohri (8090) with Greeley Conductor.
3. Construction of 3rd 132KV SDT Transmission Line from Guddu (8000) to
Kashmore Grid Station with Greeley Conductor.
4. Construction of Second 132KV SDT Transmission Line from Miro Khan to
Shadadkot Grid Station with Greeley Conductor.
5. Increase capacitor from 6.0 to 7.0 MVAR at 132KV Grid Station Warah.
6. Add Capacitor 4.8 at T-1 of 132KV Grid Station Qambar.
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
The updated load flow single line diagrams for developed HESCO and SEPCO base
case for Year-2020 with the above mentioned system reinforcements are given in
Appendix-6 (spread over 12 Sheets).
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7.1.34 “QESCO” Distribution System for Year-2020
The Year-2020 base case was studied based on the planning criteria described in
Section 12.5. The total load of QESCO by Year-2020 is 2,246 MW.
Summary for (N-0) Results
Out-of-Limits Bus Voltages:
As per the system voltage criteria [0.95-1.05 pu], some low voltage problems were
recorded within the QESCO system as given below.
--------------------------------------------------------------------------------
BUSES WITH VOLTAGE GREATER THAN 1.0500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
V(PU)
V(KV)
* NONE *
BUSES WITH VOLTAGE LESS THAN 0.9500:
BUS# X-- NAME --X BASKV AREA
V(PU)
V(KV)
BUS# X-- NAME --X BASKV AREA
9720 GULISTAN
132.00
8 0.9492 125.29
9725 HABIBZAI
132.00
8 0.9470 125.01
9730 Q.ABDULA
132.00
8 0.9492 125.30
9735 CHAMAN
132.00
8 0.9282 122.53
9770 ZHOB
132.00
8 0.9498 125.37
9810 NOSHKI
132.00
8 0.9485 125.20
9813 MAL
132.00
8 0.9396 124.03
80040 PANJGUR
132.00
8 0.9157 120.87
80041 T-1
11.000
8 0.9235 10.159
97351
11.000
8 0.9414 10.355
98101
11.000
8 0.9370 10.307
98131 T-1
11.000
8 0.9217 10.138
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Many overloading problems were recorded based on 100% of rating A.
--------------------------------------------------------------------------------
SUBSYSTEM LOADING CHECK (INCLUDED: LINES; BREAKERS AND SWITCHES; TRANSFORMERS) (EXCLUDED: NONE)
LOADINGS ABOVE 100.0 % OF RATING SET A
X--------- FROM BUS ----------X X---------- TO BUS -----------X
BUS# X-- NAME --X BASKV
AREA
BUS# X-- NAME --X BASKV
AREA CKT LOADING
RATING PERCENT
645 MASTUNG
220.00*
15
9780 MASTUNG
132.00
8
1
464.3
320.0
145.1
970 QUETTA
220.00*
15
9660 QUETTAIN
132.00
8
1
863.8
480.0
180.0
8510 USTAMOHD
132.00*
8
85102
11.000
8
1
27.3
26.0
105.0
9630 LORALAI
132.00*
8
96301
11.000
8
1
42.2
40.0
105.6
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9630 LORALAI
132.00*
8
96302
11.000
8
1
44.5
40.0
111.1
9690 MARIABAD
132.00*
8
96902
11.000
8
1
26.9
26.0
103.3
9712 KUCLAK
132.00*
8
97121
11.000
8
1
41.6
40.0
103.9
9735 CHAMAN
132.00*
8
97351
11.000
8
1
15.2
13.0
117.0
9781 K-KOCHA
132.00*
8
97811
11.000
8
1
26.6
26.0
102.1
9800 KIRDGHEB
132.00*
8
98001
11.000
8
1
13.9
13.0
107.1
9830 KALAT
132.00*
8
98303 T-3
11.000
8
1
28.8
26.0
110.8
--------------------------------------------------------------------------------
Before performing the contingency analysis (N-1), one line was added to solve the (N-0)
violations, as follows.
New Grid Stations:
1. 132 KV Pasandzai with allied T/L
2. 132 KV Musa Khail with allied T/L
3. 132 KV Jiwa with allied T/L
4. 132 KV Mashkey with allied T/L
5. 132 KV Awaran with allied T/L
6. 132 KV Jiwani with allied T/L
7. 132 KV Buleda with allied T/L
Augmentation/Extension of Power Transformers:
1. 13 with 26 MVA at Usta Muhammad
2. 13 with 26 MVA at Khad Kucha
3. 26 with 40 MVA at Kalat
4. 13 with 26 MVA at Kirdgab
5. 26 with 40 MVA at Mariabad
6. 13 with 26 MVA at Chaman
7. Additional 26 MVA at Loralai
8. Additional 26 MVA at Kuchlak
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Installation of Fixed Shunts:
1. New Fixed Shunt of 4.8 MVAR at T-1 at Bhag G/S
2. Addition of 4.8 MVAR Fixed Shunt on 132 KV side at Hoshab G/S
3. New Fixed Shunt of 7.2 MVAR at T-1 at PCSIR Hazarganji G/S
4. New Fixed Shunt of 7.2 MVAR at T-1 at Nosar G/S
5. Addition of 0.8 MVAR Fixed Shunt on T-1 at Zhob G/S
6. New 132 KV Fixed Shunt of 12 MVAR at Chaman G/S
With the above line addition, no voltage or line overloading problems were recorded
under (N-0) conditions.
Summary for (N-1) Results
Severe Outage Cases:
Four severe line outages would lead to area collapse were recorded.
--------------------------------------------------------------------------------
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 33
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9663 [PCSIR H.GANJ132.00] CKT 1
SINGLE 39
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9700 [Q.S.MAND
132.00] CKT 1
SINGLE 59
: OPEN LINE FROM BUS 9710 [PISHIN
132.00] TO BUS 9720 [GULISTAN
132.00] CKT 1
SINGLE 86
: OPEN LINE FROM BUS 9780 [MASTUNG
132.00] TO BUS 9820 [MANGOCHR
132.00] CKT 1
--------------------------------------------------------------------------------
Out-of-Limits Bus Voltages:
A few low voltage problems were recorded (outside: 0.90 – 1.10 pu).
--------------------------------------------------------------------------------
MONITORED VOLTAGE REPORT:
CONTINGENCY
V-CONT
V-INIT
V-MAX
V-MIN
SINGLE 27
<-------- B U S -------->
9765 MUSAFRPR
132.00
0.89779
0.96859
1.10000
0.90000
SINGLE 27
9770 ZHOB
132.00
0.88054
0.95525
1.10000
0.90000
SINGLE 28
9765 MUSAFRPR
132.00
0.89779
0.96859
1.10000
0.90000
SINGLE 28
9770 ZHOB
132.00
0.88054
0.95525
1.10000
0.90000
SINGLE 40
9735 CHAMAN
132.00
0.89985
0.95125
1.10000
0.90000
SINGLE 73
9750 MUS.BAGH
132.00
0.88999
0.97038
1.10000
0.90000
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SINGLE 73
9755 K. MATHERZAI132.00
0.88602
0.98257
1.10000
0.90000
SINGLE 95
9813 MAL
132.00
0.68667
0.95883
1.10000
0.90000
SINGLE 95
9855 KHARAN
132.00
0.79092
0.97960
1.10000
0.90000
SINGLE 95
9857 DLBINDIN
132.00
0.84559
0.99002
1.10000
0.90000
SINGLE 95
9858 CHAGAI
132.00
0.84516
0.99033
1.10000
0.90000
SINGLE 95
9859 BASIMA
132.00
0.87729
0.99523
1.10000
0.90000
SINGLE 111
9810 NOSHKI
132.00
0.88653
0.96684
1.10000
0.90000
SINGLE 111
9813 MAL
132.00
0.85027
0.95883
1.10000
0.90000
SINGLE 111
9855 KHARAN
132.00
0.81681
0.97960
1.10000
0.90000
SINGLE 111
9857 DLBINDIN
132.00
0.84952
0.99002
1.10000
0.90000
SINGLE 111
9858 CHAGAI
132.00
0.84912
0.99033
1.10000
0.90000
SINGLE 111
9859 BASIMA
132.00
0.81460
0.99523
1.10000
0.90000
SINGLE 113
9810 NOSHKI
132.00
0.88530
0.96684
1.10000
0.90000
SINGLE 113
9813 MAL
132.00
0.84822
0.95883
1.10000
0.90000
SINGLE 113
9855 KHARAN
132.00
0.81190
0.97960
1.10000
0.90000
SINGLE 113
9857 DLBINDIN
132.00
0.84612
0.99002
1.10000
0.90000
SINGLE 113
9858 CHAGAI
132.00
0.84569
0.99033
1.10000
0.90000
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 27
: OPEN LINE FROM BUS 9630 [LORALAI
132.00] TO BUS 9760 [Q.S.ULLA
132.00] CKT 2
SINGLE 28
: OPEN LINE FROM BUS 9630 [LORALAI
132.00] TO BUS 9760 [Q.S.ULLA
132.00] CKT 3
SINGLE 37
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9690 [MARIABAD
132.00] CKT 1
SINGLE 73
: OPEN LINE FROM BUS 9740 [KHANOZAI
132.00] TO BUS 9755 [K. MATHERZAI132.00] CKT 1
SINGLE 95
: OPEN LINE FROM BUS 9810 [NOSHKI
132.00] TO BUS 9813 [MAL
132.00] CKT 1
SINGLE 111
: OPEN LINE FROM BUS 9850 [GIDDER
132.00] TO BUS 9859 [BASIMA
132.00] CKT 1
SINGLE 113
: OPEN LINE FROM BUS 9855 [KHARAN
132.00] TO BUS 9859 [BASIMA
132.00] CKT 1
--------------------------------------------------------------------------------
Line/Transformer Overloads:
Two overloading problems was recorded based on 100% of rating A.
--------------------------------------------------------------------------------
ACCC OVERLOAD REPORT: MONITORED BRANCHES AND INTERFACES LOADED ABOVE 100.0 % OF RATING SET A
% LOADING VALUES ARE % MVA FOR TRANSFORMERS AND % CURRENT FOR NON-TRANSFORMER BRANCHES
<----------------- MONITORED BRANCH -----------------> CONTINGENCY
RATING
FLOW
9630 LORALAI
132.00
9760*Q.S.ULLA
132.00 3
SINGLE 27
112.0
126.9
120.2
9630 LORALAI
132.00
9760*Q.S.ULLA
132.00 2
SINGLE 28
112.0
126.9
120.2
9660 QUETTAIN
132.00
9690*MARIABAD
132.00 2
SINGLE 37
112.0
127.9
113.2
9660 QUETTAIN
132.00
9690*MARIABAD
132.00 1
SINGLE 38
112.0
127.9
113.2
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 40
184.0
197.0
107.8
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 44
184.0
195.0
106.6
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 45
184.0
185.2
100.3
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 48
184.0
192.0
102.5
9660 QUETTAIN
132.00
9700*Q.S.MAND
132.00 1
SINGLE 49
184.0
188.0
100.2
9710 PISHIN
132.00
9720*GULISTAN
132.00 1
SINGLE 63
112.0
108.6
104.1
9710 PISHIN
132.00
9720*GULISTAN
132.00 1
SINGLE 64
112.0
108.6
104.1
9713 HURAMZAI
132.00
9730*Q.ABDULA
132.00 2
SINGLE 66
112.0
112.5
106.4
9713 HURAMZAI
132.00
9730*Q.ABDULA
132.00 1
SINGLE 67
112.0
112.5
106.4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
9787 KANAK
132.00
9790*PANJPAI
132.00 2
SINGLE 89
112.0
120.0
109.2
9787 KANAK
132.00
9790*PANJPAI
132.00 1
SINGLE 90
112.0
120.0
109.2
CONTINGENCY LEGEND:
LABEL
EVENTS
SINGLE 27
: OPEN LINE FROM BUS 9630 [LORALAI
132.00] TO BUS 9760 [Q.S.ULLA
132.00] CKT 2
SINGLE 28
: OPEN LINE FROM BUS 9630 [LORALAI
132.00] TO BUS 9760 [Q.S.ULLA
132.00] CKT 3
SINGLE 37
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9690 [MARIABAD
132.00] CKT 1
SINGLE 38
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9690 [MARIABAD
132.00] CKT 2
SINGLE 40
: OPEN LINE FROM BUS 9660 [QUETTAIN
132.00] TO BUS 9710 [PISHIN
132.00] CKT 1
SINGLE 44
: OPEN LINE FROM BUS 9663 [PCSIR H.GANJ132.00] TO BUS 9664 [NOHSAR
132.00] CKT 1
SINGLE 45
: OPEN LINE FROM BUS 9664 [NOHSAR
132.00] TO BUS 9710 [PISHIN
132.00] CKT 1
SINGLE 48
: OPEN LINE FROM BUS 9690 [MARIABAD
132.00] TO BUS 9693 [SORRANGE
132.00] CKT 1
SINGLE 49
: OPEN LINE FROM BUS 9693 [SORRANGE
132.00] TO BUS 9700 [Q.S.MAND
132.00] CKT 1
SINGLE 63
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9715 [YARU
132.00] CKT 1
SINGLE 64
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9715 [YARU
132.00] CKT 2
SINGLE 66
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9730 [Q.ABDULA
132.00] CKT 1
SINGLE 67
: OPEN LINE FROM BUS 9713 [HURAMZAI
132.00] TO BUS 9730 [Q.ABDULA
132.00] CKT 2
SINGLE 89
: OPEN LINE FROM BUS 9787 [KANAK
132.00] TO BUS 9790 [PANJPAI
132.00] CKT 1
SINGLE 90
: OPEN LINE FROM BUS 9787 [KANAK
132.00] TO BUS 9790 [PANJPAI
132.00] CKT 2
--------------------------------------------------------------------------------
To overcome these (N-1) violations, more system additions were considered as follows.
132 kV Lines:
1. New 132 KV SDT Line from Mastung to Khad Kucha – 36 KM with Rail conductor
2. New 132 KV SDT Line from Loralai to Qilla Saifullah – 60 KM with Rail conductor
3. Reconductoring of D/C Huramzai – Qilla Abdullah from Lynx to Greeley
conductor 18 Km
4. New Ckt Quetta Industrial – Q.S.Manda with Rail 30 Km
5. Reconductoring of D/C Kank – Panjpai from Lynx to Greeley conductor 25 Km
6. Additional 12 MVAR Capacitor at 132 KV side at Kharan G/S
7. New 7.2 MVAR Shunt Capacitor at T-3, 132 KV Kharan G/S
With these additional system reinforcements, no voltage or line overloading problems
were recorded under both (N-0) and (N-1) conditions.
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The updated load flow single line diagrams for developed QESCO base case for Year2020 with the above mentioned system reinforcements are given in Appendix-6 (spread
over 5 Sheets).
7.2
Short Circuit Study for Year-2020 Base Case
The three-phase and single-phase-to-ground symmetrical fault currents were calculated
based on IEC 909 Standards for each DISCO. An updated Year-2020 load flow case
including all DISCO networks was used in the calculations. The calculations considered
the maximum thermal generation in South and the maximum hydro generation in North.
7.2.1
Assumptions
For the Short circuit calculations, the following Assumptions were made:
a) Bus voltages are set at 1.1+j0.0 pu.
b) Generator outputs are set at zero (internal voltage = terminal voltage).
c) Pre-fault loading conditions are neglected.
d) Transformer turns ratios are set at 1.0 and phase shifts are not modelled.
e) Line charging and positive sequence shunt admittances are neglected.
7.2.2
Short Circuit Study Results
Due to the volume of the short circuit results, the highest ten (10) short circuit currents at
132 kV (or 66 kV) buses were presented in this section. The complete short circuit for
grid stations of DISCOs are given in Appendix-7.
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7.2.3
“PESCO & TESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
PESCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
1170
NOWSHR-I
132
30.2
22.3
1070
MARDAN
132
30.7
28.7
1169
NOWSHR-N
132
29.8
23.4
1189
SHAIBG-N
132
29.6
28.9
1185
Peshwar City
132
24.4
18.3
1240
JAMRUD-I
132
27.6
25.2
1191
SHAHI BAG SP
132
26.6
22.4
1193
WARSAK ROAD
132
25.9
22.7
1420
HATTAR
132
25.2
17.7
1290
SHMUHDI-2
132
25.0
25.5
Based on 40 kA switchgear rating, no short circuit problems were recorded in the 132 kV
network
Short Circuit Calculations of Year-2020
TESCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
1275
BARA
132
16.1
15.2
1295
D.A.KHEL
132
11.0
7.1
1215
MARBLE CITY
132
9.7
7.4
1760
ALIZAI
132
9.5
6.3
1755
SADDA TESCO
132
6.8
4.4
1352
GHALANAI
132
5.4
3.6
1350
MIRANSHA
132
5.1
3.8
1317
KORAIZ
132
5.0
2.8
1346
MIR ALI
132
4.8
3.5
1250
LANDIKOT
132
4.7
3.3
Based on 40 kA switchgear rating, no short circuit problems were recorded in the 132 kV
network.
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7.2.4
“IESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
IESCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
2020
BURHAN-1
132
48.1
38.5
2022
BURHAN-2
132
38.4
30.7
2025
SANGJANI
132
47.1
38.1
2045
BURHAN-N
132
44.7
34.9
2060
WAH NEW
132
48.8
39.1
2065
AWC
132
38.3
28.6
2100
TAXILA
132
44.6
37.4
2220
ZEROPOINT
132
37.1
26.0
2240
ISB-UNIVERTY
132
36.7
27.2
2258
UNIVRSTY OLD
132
36.1
26.7
Based on 40 kA switchgear rating, there are many high short circuit values in the 132 kV
network. These problems can be solved by either reconfiguring the network or splitting
the 132 kV bus and redistributing the lines/transformers.
7.2.5
“GEPCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
Short Circuit Current,
Bus
Number
504760-01-A4
GEPCO
kA
Name
kV
3-PH
1-PH
3000
GAKKHAR
132
41.7
34.5
3001
NANDPR-G
132
34.9
35.8
3003
NOKHAR
132
36.3
27.5
3005
AROOP
132
30.9
26.3
3120
G.C.ROAD
132
29.8
22.3
3130
TH.SANSI
132
33.0
26.8
3316
NEW GUJRAT
132
32.4
32.0
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Disco Transmission Expansion Plan
National Power System Expansion Plan
Short Circuit Calculations of Year-2020
GEPCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
3105
SAHUWALA
132
28.7
24.2
3146
G.LHR RD
132
28.7
22.6
3140
G.P.ROAD
132
28.3
22.9
Based on 40 kA switchgear rating, one high short circuit value was recorded in the 132
kV network which can be solved by either reconfiguring the network or splitting the 132
kV bus and redistributing the lines/transformers.
7.2.6
“LESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
LESCO
Bus
Number
Short Circuit Current, kA
Name
kV
3-PH
1-PH
4012
LAHORE
132
50.4
47.0
4029
ATTABAD
132
48.7
40.6
4076
RAVI-I
132
49.8
38.4
4113
MCLEODRD
132
48.5
34.0
4114
SUNYVIEW
132
48.9
34.0
4137
QARTABA
132
48.7
36.7
4138
SHADMAN
132
49.5
37.9
4140
REHMNPRK
132
49.5
37.9
4155
WAPDATWN
132
47.9
38.6
4643
JAIL RD
132
49.5
37.9
Based on 40 kA switchgear rating, there are many high short circuit values in the 132 kV
network. These problems can be solved by either reconfiguring the network or splitting
the 132 kV bus and redistributing the lines/transformers.
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7.2.7
“FESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
FESCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
4330
NSHTBD-1
132
50.9
49.6
4333
NEWNSHT
132
40.0
36.8
4335
SPS
132
41.6
37.4
4336
SPS COLONY
132
45.1
40.6
4369
UAE-GEN
132
53.1
53.5
4370
GTPS-CC
132
50.4
48.2
4380
FBD-TH-O
132
37.5
30.1
4460
SMNDRIRD
132
42.3
37.5
4495
S.RD NEW
132
38.0
34.8
4510
J.W.RD
132
49.1
45.9
Based on 40 kA switchgear rating, there are many high short circuit values in the 132 kV
network. These problems can be solved by either reconfiguring the network or splitting
the 132 kV bus and redistributing the lines/transformers. For example, there are 14 lines
and two transformers at NSHTBD-1 (No. 4330) where the short circuit current is about
50.9 kA. This bus can be split and lines be distributed, which would considerably reduce
the short circuit current.
7.2.8
“MEPCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
MEPCO
Bus
Number
6666
504760-01-A4
Short Circuit Current, kA
Name
MULTAN-N
kV
3-PH
1-PH
132
42.4
37.6
7250
MN.KH.RD
132
41.2
36.2
7100
P.GAIB-1
132
37.6
34.4
7300
KAPCO
132
39.2
45.3
7331
KOTADU-O
132
36.5
37.1
7285
QASIMPUR
132
33.6
27.1
168
Disco Transmission Expansion Plan
National Power System Expansion Plan
Short Circuit Calculations of Year-2020
MEPCO
Bus
Number
Short Circuit Current, kA
Name
kV
3-PH
1-PH
7109
P.GAIB-2
132
33.5
28.9
6070
YOUSFWLA
132
30.0
29.8
6090
SAHWAL-O
132
26.8
23.5
6140
CHCHWTNI
132
26.8
23.5
Based on 40 kA switchgear rating, there are two marginal high short circuit value
recorded in the 132 kV network which can be solved by either reconfiguring the network
or splitting the 132 kV bus and redistributing the lines/transformers.
7.2.9
“HESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
HESCO
Short Circuit Current,
Bus
Number
kA
Name
kV
3-PH
1-PH
8170
DADU NEW
132
24.6
24.6
8219
SHIKAR-N
132
25.5
26.2
9090
HALAROAD
132
36.4
36.3
9150
PHULLELI
132
29.5
26.1
9159
HYD-TMRD
132
28.1
28.6
9200
KOTRI
132
25.7
26.5
9400
JAMSHORO NEW
132
31.7
32.7
9410
QASIMABAD-I
132
24.8
20.7
9415
QASIMABAD-II
132
24.2
21.6
9420
JAMSRO OLD
132
29.0
28.3
Based on 40 kA switchgear rating, no short circuit problems were recorded in the 132 kV
network.
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7.2.10 “QESCO” Short Circuit Calculations for Year-2020
Short Circuit Calculations of Year-2020
QESCO
Bus
Number
Short Circuit Current, kA
Name
kV
3-PH
1-PH
9660
QUETTAIN
132
15.5
15.2
9700
Q.S.MAND
132
14.8
15.9
9780
MASTUNG
132
13.4
11.9
9701
HABIB-P
132
13.3
14.2
9670
SARYAB
132
13.3
14.2
9710
PISHIN
132
10.8
9.1
9690
MARIABAD
132
10.5
10.0
9787
KANAK
132
10.3
7.6
9663
PCSIR H.GANJ
132
10.2
8.0
9715
YARU
132
10.0
8.6
Based on 40 kA switchgear rating, no short circuit problems were recorded in the 132 kV
network.
7.3
Cost Estimate
The cost estimate for each DISCO’s future projects was prepared on the following
bases:
a) The same unit cost (with a little mismatch) was used for all DISCOs.
b) The cost estimate was prepared for each study year; 2015, 2016, 2018 and 2020
c) The cost estimate was first prepared in PKR, and then converted to USD at a
rate of 1.0 USD is equal to 85.5 PKR (rate prevailing in May 2011).
7.3.1
Unit Cost
A general unit cost sheet was prepared for all DISCOs, as given in Table 3. A slight
modification was made in some cases for more accurate cost estimate based on the
prices at each DISCO. The following grid station notations were used in Table 3:
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
a) Augmentation: replacement of an existing power transformer 132/11 kV in a grid
station with a larger one; including the switchgear, if needed.
b) Extension: addition of a power transformer 132/11 kV to an existing grid station,
including the switchgear if needed.
c) New Substations: Two types of new substations of 132/11 kV were considered
each with two or three power transformer sizes of 26 and 40 MVA respectively.
d) New D/C Line: All new lines of 132 kV have been considered as D/C using either
Rail or Greely conductor
e) Fixed Capacitors: the capacitor banks would be switched manually.
f)
Switched Capacitors: the capacitor banks would be switched automatically based
on the voltage settings.
7.3.2
Cost of Reinforcements
The cost of the proposed system reinforcements was estimated to be 116,092 MPKR
which is equal to US$ 1,451 million for all the DISCOs combined. While this costing
information is not directly used in the NPSEP, it does indicate the level of investment
that the DISCOs must make so NTDC can strengthen, reinforce and expand the existing
transmission plan as per the NPSEP.
The unit costs for DISCO Transmission Expansion are given in Table 3. A summary of
the cost estimates of all DISCOs is given in Table 4 in MPKR and in Table-5 in MUSD.
Table 3
Sr.
No
1
Unit Cost for DISCO Systems Expansion
Estimated
Cost in
Million Rs
Estimated
Cost in
Million US $
26 MVA
49.200
0.615
40 MVA
62.730
0.784
13 MVA
42.560
0.532
26 MVA
53.200
0.665
40 MVA
67.830
0.848
Type of Investment
Augmentations
60 MVA*
2
Extensions
60 MVA*
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Sr.
No
3
4
Estimated
Cost in
Million Rs
Estimated
Cost in
Million US $
GIS
520.000
6.500
AIS Turnkey
260.000
3.250
AIS Departmentally
173.333
2.167
GIS
480.000
6.000
AIS Turnkey
220.000
2.750
AIS Departmentally
146.667
1.833
On Poles, D/C per Km
14.500
0.181
One Towers, D/C per
Km
9.000
0.113
D/C 800mm2
200.000
2.500
New (7.2 MVAR)
4.430
0.055
Addition (1.2 MVAR)
0.250
0.003
Addition (2.4 MVAR)
0.837
0.010
Addition (3.6 MVAR)
3.160
0.040
New (12 MVAR)
8.433
0.105
New (24 MVAR)
16.866
0.211
New (36 MVAR)
25.300
0.316
New (48 MVAR)
33.733
0.422
New (7.2 MVAR)
6.645
0.083
Addition (1.2 MVAR)
0.375
0.005
Addition (2.4 MVAR)
1.256
0.016
Addition (3.6 MVAR)
4.740
0.059
New (12 MVAR)
12.650
0.158
New (24 MVAR)
25.299
0.316
New (36 MVAR)
37.950
0.474
New (48 MVAR)
50.600
0.633
Type of Investment
New Sub-Station
with 2x40 MVA
PTRFs
New Sub-Station
with 2x26 MVA
PTRFs
5
New D/C T/Line
with Rail
Conductor per
Km
6
New D/C Cable
per Km
Fixed Capacitors
(11 kV)
Fixed Capacitors
(132 kV)
7
Switched
Capacitors (11 kV)
Switched
Capacitors (132
kV)
*Assumed 125 % of the cost of 40 MVA transformers
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Table 4
No.
DISCO
1
DISCOs Cost Estimate 2015-2020 in MPKR
Year-2015
Year-2016
Year-2018
Year-2020
FESCO
3,968.7
1,571.9
3,711.9
3,052.3
12,305
2
GEPCO
1,996.3
872.9
62.7
696.5
3,628
3
HESCO
14,944.4
5,540.6
3,970.0
2,296.0
26,751
4
IESCO
893.7
2,096.7
1,880.2
428.8
5,299
5
LESCO
8,952.7
938.5
1,197.1
5,346.4
16,435
6
MEPCO
11,201.6
5,556.1
2,583.2
3,071.7
22,413
7
PESCO
3,135.0
788.8
4,088.7
3,490.1
11,503
8
QESCO
6,614.3
940.3
2,209.6
5,239.2
15,003
9
TESCO
1,761.6
52.3
694.0
248.0
2,756
53,468
18,358
20,397
23,869
116,092
Total
Table 5
Total
DISCOs Cost Estimate 2015-2020 in MUSD
No.
DISCO
Year-2015
Year-2016
Year-2018
Year-2020
Total
1
FESCO
49.6
19.6
46.4
38.2
154
2
GEPCO
25.0
10.9
0.8
8.7
45
3
HESCO
186.8
69.3
49.6
28.7
334
4
IESCO
11.2
26.2
23.5
5.4
66
5
LESCO
111.9
11.7
15.0
66.8
205
6
MEPCO
140.0
69.5
32.3
38.4
280
7
PESCO
39.2
9.9
51.1
43.6
144
8
QESCO
82.7
11.8
27.6
65.5
188
9
TESCO
22.0
0.7
8.7
3.1
34
668
229
255
298
1,451
Total
7.4
Conclusions
a) The objective of this study was to evaluate the performance of the DISCO
Secondary Transmission System expansion plans in four study years; 2015,
2016, 2018 and 2020.
b) The load flow analysis was performed for each DISCO network based on the
load forecast at each study year and the local expansion plans. The load flow
results were assessed based on the agreed upon planning criteria. The required
504760-01-A4
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Disco Transmission Expansion Plan
National Power System Expansion Plan
system reinforcements were then proposed to alleviate the bus voltage and/or
line overloading problems.
c) The short circuit calculations were performed for each DISCO only for the last
developed year (Year-2020) to check the value of the fault current at each bus. A
few short circuit problems were recorded and these problems would be solved by
reconfiguring the system at these specific locations.
d) The cost of the proposed system reinforcements was estimated and was found to
be 116,092 MPKR which is equal to 1,451 MUSD at a conversion rate of 1 USD
= 80.0 PKR
7.5
Recommendations
a) Following uprating of equipment should be considered in medium to long term
perspective:
i.
132/11 kV transformers of 31.5/40 MVA should at least be used for urban
centres. The next factory standard higher size of 60/67 MVA size may be
also be considered to be used in thickly populated urban centre grid
stations.
ii.
For 132 kV lines the twin bundled circuits using Rail or Greely conductors
may be considered especially in big urban centres.
iii.
For 132 kV switchgear, the symmetrical short circuit rating should be 40
kA or higher.
b) The capacitor banks should always be specified as follows:
i.
Switched shunt instead of fixed
ii.
Switching of the steps of capacitor banks should be controlled by
Programmable Logic Controller (PLC) to regulate voltage within
permissible range during high and low load conditions
iii.
The current limiting reactors should be used in series with the capacitor
banks to limit the in-rush current at the time of switching of the capacitor
banks.
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iv.
The detuning capacitors may also be used in series with the capacitor
banks if parallel-resonance of odd harmonics is found to occur at any
substation
c) All T-Off connections of substations should be changed to proper in-out looping
of the circuit. The present practice of connecting the substations through T-Off
may be abandoned in future, only proper in-out looping should be used.
d) The present expansion plan has applied N-1 criteria on lines only and not at
132/11 kV transformers due to huge investment anticipated. However policy
should be laid down to achieve N-1 criteria at 132/11 kV transformers in long
term perspective.
e) The updating of DISCO Transmission Expansion Plan should be an ongoing
activity. The present structure of Planning sections in DISCOs is flawed in terms
of the fact that planning and studies is not considered as an ongoing continuous
activity. The engineers supposed to be busy on this continuous activity are
assigned on many other field related tasks such as project monitoring etc. and
they are not dedicated for the activity of planning and studies. A dedicated
Planning and Studies Section must be restructured for this purpose.
f)
Capacity building of Planning and Studies engineers of DISCOs should also be
carried out on regular basis in terms of updating of software such as PSS/E
including the modules of load flow, short circuit analysis and dynamic stability
analysis. Also they should be equipped with modern load forecasting techniques
and respective software.
504760-01-A4
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Disco Transmission Expansion Plan
SNC-LAVALIN
1801 McGill College Avenue
Montreal, Québec
Canada H3A 2N4
Tel.: (514) 393-1000
Fax: (514) 334-1446
www.snclavalin.com
Issued September 15, 2011

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