rITM-4 craves4 211" K POWER SYSTEM OPERATION

rITM-4 craves4 211" K POWER SYSTEM OPERATION

craves4 211"
rITM-4
(Ernrefira att qof azeRrre wee artrruze eirr41)
,111114
K
POWER SYSTEM OPERATION CORPORATION LIMITED
(A wholly owned subsidiary company of POWERGRID)
119
NORTHERN REGIONAL LOAD DESPATCH CENTRE
1989 20/ d i
18/A, Shaheed Jeet Singh Sansanwal Marg, Katwaria Sarai, New Delhi - 110 016
Tel: 2685 4015, 2685 3082, Tele Fax: 011- 2685 2747 e-mail: nrldcAvsnl.com
fitFt- :19 74 2015 /20:00hrs
NRLDC\TS-11\
Th0-1-
A
1330Hrs # .3ccllf
ra6171: 19 4 2015 tY 4
Oft PO gt 36/1
l TiOr 31tIMV
%IOC
a-1-Itzr 14-4-31a. fi
6cci
17-4--FaT
er
19
4
2015 *I 4146i 1330Hrs
. foia *1 LH iul
3T9-
ell$o1
aft f
I
fd-4:51a" azriar a1 3rYtft
}-1Gall 1 1 1
311cr
RTm4
ti
71-611T411W
Mu]:
1.
2.
3.
4.
5.
Head of SLDC-Punjab/Haryana/HP/Rajasthan/UP/Delhi/JEtK/Uttrakhand/UT Chandigarh
Head of STUs- Punjab/Haryana/HP/Rajasthan/UP/Delhi/JEtK/Uttrakhand/UT Chandigarh
Head of NLDC/WRLDC/NERLDC/SRLDC/ERLDC
Head of NTPC-Singrauli/Rihand/Unchahar/Dadri/Anta/Auraiya/NTPC NR Lucknow/NTPC-NCR Noida,Head
of NHPC-Bairasuil/Chamera-1,11,111/Dulhasti/Dautiganaga/Salat/Sewa/Tanakpur/Uri/NHPC Faridabad,
Head of THDC- Tehri/Koteshwar, Head of SJVNL-Nathpa Jhakri, BBMB Chandigarh, Head of NAPS/RAPSB/RAPS-C, Head of Karcham Wangtoo, Head of shriCement TPS, Head of Budhil
ED(NR-I)/ED(NR-II)/ED(OS),POWERGRID
ity•i :
gferaik
1. Director(Operation),POWERGRID/CEO,POSOCO
2.
3.
Member Secretary NRPC/Member (GoEtD), CEA
Director (OM), Ministry of Power, Govt. of India
Report on Load Crash in Northern Grid during from 13.30hrs to 20:00hrs of 19 th
May'2015
Incident Summary:
On 19th May'2015 Northern Grid experienced heavy demand crash due to thunder storm. The NR
demand started decreasing from the afternoon (13:30hrs). The demand of Haryana started decreasing
after 13:30hrs, Rajasthan after 14:00hrs and that of UP after 16:45hrs. The Regional demand touched a
minimum of 27966 MW at around 18.06 Hrs. This demand reduction resulted in high frequency and
widespread high voltages throughout the system. The system frequency touched a high of 50.59 Hz at
18:03 hrs. 12 no. of EHV (400kV & above) lines were opened to control high voltages and 23 no. of EHV
(400kV & above) lines also tripped on fault/over voltage.
Incident Information:
The demand reduction (as per SCADA data) at 18.06 hrs on 19 th May 2015 in comparison to that at 18.06
hrs on 18th May 2015 was of the order of 9450 MW, as given below:
Demand Met
(MW) at 18.06 hrs
of 18th May,15
Demand Met (MW) at
18.06hrs of 19th May,
15
Demand Reduction in
MW on 19th May with
respect to previous
day (18th May) at
18.06Hrs
Punjab
5763
5718
-45
Haryana
5110
3017
-
Rajasthan
7767
3910
-
Uttar Pradesh
10934
8189
-2745
Delhi
4434
3536
-898
Chandigarh
252
63
-189
J&K
1222
1392
170
Uttarakhand
1190
1436
246
Himachal Pradesh
745
705
-40
Northern Region
37416
27966
-9450
State Control
Areas
2093
3857
Demand of Rajasthan, Haryana, UP, & Delhi were much lower than the normal demand. (SCADA plots of
demand attached as Annexure-II). Rajasthan, Haryana, UP & Delhi state control areas were continuously
under drawing from the grid. This demand reduction resulted in high frequency and high voltage in the
system. Twelve lines of 400 kV and above were manually opened to control high voltage and twenty
three lines also tripped on fault/over voltage. (List enclosed as Annexure-I).
The Northern Region exported 400MW to other regions (underdrawal of NR was of the order of
4500MW). Thus, other regionsalso helped in absorbing the surplus of NR. The State of Haryana, UP,
Rajasthan underdrawn from the grid to the line of 1500-1700MW while Delhi underdrawn to the line of
500-600MW.
Actions taken:
The weather warnings and messages were issued by NRLDC to make necessary arrangements as well as
to remain alert, since morning hours of 19 th May 2015. Alert SMS/E-mail messages were issued to all
concerned during the period to reduce under-drawl and for backing/shutting down of generation in
order to control high frequency operation besides containing over-voltages. Generation to the tune of
2620 MW was stopped (closed down). 2120 MW backing down was carried out at ISGS stations
(Singrauli, Rihand, Dadri-Th, Dadri-Gas, Auraiya-Gas, Anta-Gas). Backing down of generation was also
carried out at state generators. List of the generating Stations where unit closing were carried is given
below:
SI No
Description
Installed Capacity
1.
Panipat-7
250 MW
2.
Panipat-8
250 MW
3
Kota unit-4
210MW
4
Kota unit-5
210MW
5
Suratgarh-3
250 MW
6
Tehri 2units
500 MW
7
Chamera-1
450 MW
8
Jhakri-Karcham Complex
500 MW
Total
2620 MW
Annexure-I
Lines opened on High Voltage after 1330 Hrs of 19.05.2015 due to inclement weather
(12 Nos)
1
Agra-Fatehpur ckt-2
Line
Voltage
Level
765 kV
2
Meerut-Moga
Line
765 kV
PGCIL
3
Meerut-Bhiwani
Line
765 kV
PGCIL
4
Agra-Sikar 1
Line
400 kV
PGCIL
5
Agra-Sikar 2
Line
400 kV
PGCIL
6
Agra-Bhiwadi ckt-2
Line
400 kV
PGCIL
7
Bhiwadi-Neemrana 1
Line
400 kV
PGCIL
8
Sikar-Neemrana 1
Line
400 kV
PGCIL
9
Bassi-Bhiwadi 1
Line
400 kV
PGCIL
10
Bhiwadi-Moga2
Line
400 kV
PGCIL
11
Kanpur-Ballabgarh ckt-1
Line
400 kV
PGCIL
12
Mainpuri-Ballabgarh ckt-1
Line
400 kV
PGCIL
Type
Element Name
SI.No
Owner
PGCIL
Power System Elements tripped earlier in the day (09 Nos)
SI.No
Element Name
Type
VLoeltvaegle
Owner
Outage
Time
1
Anta-RAPPC
Line
220kV
PGCIL
19-05-2015
11:45
2
RAPPB-Chittorgarh ckt-1
Line
220kV
PGCIL
19-05-2015
11:45
3
RAPPB-Chittorgarh ckt-2
Line
220kV
PGCIL
19-05-2015
11:45
4
RAPPB-Udaipur ckt
Line
220kV
PGCIL
19-05-2015
11:45
5
RAPPB-RAPPC
Line
220kV
PGCIL
19-05-2015
11:45
6
Kankroli-Debari
Line
220kV
RRVPNL
19-05-2015
11:47
7
220kV Bus-II
Bus
12:10
315MVA ICT-1 Gurgaon
ICT
POWERGRID
POWERGRID
19-05-2015
8
19-05-2015
12:10
9
315MVA ICT-2 Gurgaon
ICT
220 kV
40 0/220
kV
400/220
kV
POWERGRID
19-05-2015
12:10
C u.sourt%
Tripping of elements after 1330 Hrs of 19.05.2015 due to inclement weather
Sl.No
Element Name
Type
Voltage
Level
Owner
Outage
Time
1
Daultabad-Dhanonda ckt-1
Line
400 kV
HVPNL
19-05-2015
13:39
2
Daultabad-Dhanonda ckt-1
Line
400 kV
HVPNL
19-05-2015
13:39
3
Ratangarh-Sikar ckt-1
Line
400 kV
RRVPNL
19-05-2015
13:31
4
Ratangarh-Sikar ckt-2
Line
400 kV
RRVPNL
19-05-2015
13:47
5
Ratangarh-Merta
Line
400 kV
RRVPNL
19-05-2015
13:47
6
Ratangarh 315 MVA ICT 2
ICT
RRVPNL
19-05-2015
13:47
7
Ratangarh 315 MVA ICT 1
ICT
RRVPNL
19-05-2015
13:47
Balia-Bhiwadi Pole 1
Line
PGCIL
19-05-2015
14:12
Balia-Bhiwadi Pole 2
Line
500 kV
HVDC
PGCIL
19-05-2015
14:12
10
Gurgaon-Manesar
Line
400 kV
PGCIL
19-05-2015
14:12
11
Agra-Sikar ckt-2
Line
400 kV
PGCIL
19-05-2015
14:29
12
Agra-Jhatikara ckt
Line
765kV
PGCIL
19-05-2015
13
Agra-Gwalior ckt-1
Line
400 kV
PGCIL
19-05-2015
16:18
14
Agra-Gwalior ckt-2
Line
400 kV
PGCIL
19-05-2015
16:19
15
Agra 1500MVA ICT-2
ICT
765/
400 kV
PGCIL
19-05-2015
16:22
Balia-Bhiwadi Pole 1
Line
500kV
HVDC
PGCIL
19-05-2015
16:30
Balia-Bhiwadi Pole 2
Line
500 kV
HVDC
PGCIL
19-05-2015
16:30
Gurgaon-Manesar
Line
400 kV
PGCIL
19-05-2015
16:30
Neemrana-Sikar ckt-2
Line
400kV
PGCIL
19-05-2015
16:32
Fatehpur-Mainpuri 2
Line
400 kV
PGCIL
19-05-2015
17:33
Bhiwani -Meerut
Line
765 kV
PGCIL
19-05-2015
17:43
Manesar-Neemrana 2
Line
400 kV
PGCIL
19-05-2015
17:49
Dadri(NTPC)-G.Noida(UP)
Line
400 kV
PGCIL
19-05-2015
17:54
8
9
16
17
18
19
20
21
22
23
400/
220 kV
400/
220 kV
500kV
HVDC
Load of NR for 18th & 19th May'15
45000
50.4
43000
41000
49.9
39000
Hz
37000
49.4
35000
33000
M e_ L».0( ci 9 . ors
31000
I )
48.9
29000
—18_Load_NR
—19_Load_NR
18_Freq
—19_Freq
27000
48.4
F.0 EREEEEEF,.?,EEEREEEEEP.F.F.EEEEEEEEEE
0
0000000000000000000000000000000
e390000000999090000000000000000
Cd
N
O
N
IS
a «I eq
" en
CI
; 00
.'2;
;
8 74
NNOci2 •,.E622222222g3gg88888888eii
Load of Rajasthan for 18th & 19th May'15
9000
8000
7000
6000
rq.A.SAr
5000
4000
—18_Load_Rai —19_Load_Rej
3000
„p „p .cP
34. .34' 3#
RP. ft.° .
4,.."
•Pt
,p351.stz'
4>
.cP"
34' .34' 34' 3
4'
I; NI' '," ON," is.
eeeee oc>
44e
c§:'
,1) cc> ocl
10. c§5 ' •§5 '
01;. 64. V . .64.
c§s'
•56.
44- 4e e 4-42.414o°
Oz.
4
cO n55 eV' dzi* •O' tS5'
iV.
Load of UP for 18th & 19th May'15
13000
12000
11000
10000
9000
8000
7000
e e e e
q4s 4 44s 14s eeeee 44' q‘is eeeee
.cP
.43 RP 43 RP RP .43 RP 43 sP .43 RP o° o°
.c§3 .43 .cP
.cP RP
.153 ' .43 ' 43 ' A53' 43' RP' -IP' tSs' RP'
o°.43' 43 ' AP'
43' ..eizr .0 RP' n$3"
ck' RA' 4> 43' 4.6' 43' 46' 46* Ov'
o'*'
Ov* Or Or Or
4,1> <..1"
Load of Haryana for 18th & 19th May'15
6500
6000
5500
5000
4500
4000
3500
3000
2500
—18_Load_Hary — 19_Load_Hary
2000
' IQQQQQ1QQQQQQQQ
4' 4 4 4' 4. 4 4 4' `a" 4' .4" 4 4 4"
.CP SP SP CP SP SP CP SP cP 43 s:P cP .63 RP
si5.
b° O°
.0"
.1.55.
f0 .
.153. .eP . s5°. :ets' JP .
cYr clo 43' cl‘ •
43' cir
CP . 0. cp .
.1'.
.9".
0
4. 4' 4 •R•2
4 4'
Qqqg
SP SP .CP SiZ' SP SP S)c''
RP AP .43 '
Load of Delhi for 18th & 19th May'15
5500
5000
4500
4000
I9
1000MW
t
3500
—113_Load_Delhi —19_Load_Delhi
3000
ee
es es e e e e e e
eeee
*es eeetitts
d) o•
.o° o- o4)o•
.4)o•
o° ol) o• o•.o° o° o•
.4) oc) .4)
.4)o•
c:1)
. o • o•
o°o•
o° .5? .•4)
• ci•
o• o•
'cl/ N.1./
01/ 0.1:. 01./ 01/ 01;. 05;. 011. CV. ot'''
o°'
4°' 43 ' 6) •