Powerstar Virtue Brochure
Transcription
Powerstar Virtue Brochure
Powerstar Virtue Brochure British Chambers of Commerce www.powerstar.com INTEGRATING ENERGY STORAGE WITH RENEWABLE ENERGY Power generators like power plants and wind farms make energy which is then passed to the national grid or power network. The grid transmits this through pylons before it reaches an electricity company, who divert power into buildings. If there is a surge in demand for electricity this has to be found by the national grid. Demand for electricity is increasing; globally consumption of electricity is expected to grow by over 60% by 2030. Powerstar Virtue allows companies to save and store electricity locally and switch to this stored supply at any time. On-site renewables can be integrated with the Powerstar Virtue solution to provide the maximum cost benefit from renewable generation, this includes: • Eliminating the need for inverters on renewables • Reducing the cost of initial renewable installation Consequently, by combining the unique design of Powerstar and renewable energy generation on a site, renewables can be made reliable and maximum cost benefits achieved. Powerstar Virtue is not limited to providing savings on sites with renewable installations, it is also capable of making significant cost savings for any commercial or industrial site which has a Powerstar installation. • Increasing return on investment levels of renewable installations • Storing energy generated by onsite renewable technologies UNIQUE VOLTAGE OPTIMISATION TECHNOLOGY Powerstar is the only voltage 70%-80% optimisation technology in the world with a patent on its design. The Powerstar system matches the incoming electrical supply to the needs of the on-site equipment and returns any excess energy back to the grid. It achieves this by generating real negative power which flows towards the grid and is subtracted from the incoming power. of the total savings from Powerstar come from the real negative power feedback 20%-30% come from the improvement of equipment efficiencies A report from the University of Warwick concluded: “Powerstar Voltage Optimisation can lead to energy savings. The overall power consumption is reduced because the negative power is induced as feedback power to the source. Virtually, this power can be considered as power “generated” from the load side.” Professor Jihong Wang THE UNIVERSITY OF WARWICK Powerstar Virtue harnesses the induced negative power generated by the Powerstar voltage optimisation technology to charge a storage medium and integrates it with renewable generation (if available). This ensures that users will always have optimal power during times of need because the induced negative power generated by the Powerstar voltage optimisation technology is based on the load of a building. This load is easy to predict; induced negative power is usually 10% of the total load, therefore the current available for charging remains consistent. MAKING RENEWABLE ENERGY RELIABLE REDUCE Energy grids around the world are struggling to cope with the surge in demand for electricity. Reduce electricity consumption through electronically regulated voltage optimisation technology from Powerstar The increase in demand requires more cabling and pylons to support usage, a cost which is ultimately passed onto electricity users bills. STORE Powerstar Virtue is a solution to address these problems, allowing energy generated during periods of low demand to be stored locally and used when required. Harness induced negative power feedback to store electricity locally SAVE Switch to stored power at any time to significantly reduce electricity costs. This, coupled with the volatile nature of renewable generation sources – solar and wind for example generate little amounts of power if the sun doesn’t shine or wind doesn’t blow – highlights the need for flexibility and greater control of electricity usage. By utilising the stored energy to disconnect from the grid companies can make renewable energy reliable as the batteries used will always have a certain amount of energy stored (above 40%) so that when supply from the grid is interrupted unexpectedly, the building can still be fully supported. Powerstar Virtue allows the users to become a virtual power station, reliably forecasting how much power will be available at all times. Therefore informed decisions can be made on when stored energy should be used which will allow companies to reduce electricity costs by significant amounts. MAXIMISE BENEFITS OF RENEWABLE INSTALLATIONS 3 POWERSTAR VIRTUE HOW IT WORKS NEGATIVE POWER POWERSTAR MAX / HVMAX MASTER CONTROLLER GRID SUPPLY STORED ENERGY LOAD CONTROLLER STORAGE RENEWABLE ENERGY (Solar, Wind) LOAD The red dotted line represents grid power supplied at 230V. The supplied electricity flows into the Powerstar transformer and is optimised before reaching the load. The load controller will dictate the amount of power required by the facility. The green dotted line represents the induced negative power that is siphoned into the master controller, which regulates the incoming current. The master controller contains an inverter/charge controller that controls the output of power to the storage medium, and communicates with the Powerstar MAX system to not only charge the batteries efficiently, but any excess current not accepted during charging will be diverted back to the grid, enabling reduced but continual VO savings during operation. Renewable generation shown by the yellow dotted line, will be directed to the same master controller that will optimise the voltage to either power the store directly or convert it to DC voltage in order charge the batteries. The incoming renewable power will be assessed by the controller, which will predict the amount of induced negative power needed to provide the optimal available energy for any facility requirements. The master controller can be manually set to discharge the storage medium and disconnect the grid supply at a pre-determined time, in such a way as to have no effect on the load. The master controller will communicate directly with the National Grid and to respond to any demands, this will ensure maximum cost benefit from DNO incentivised schemes. The stored energy (black dotted lines) will flow back into the master controller to be converted to AC, as well as smoothed out to provide a stable flow of power to the Powerstar VO system. Any further issues with the wave form will be resolved by the Powerstar VO system, before the load is supplied with power. FEATURES AND BENEFITS The Powerstar Virtue system is fully designed and manufactured in the UK, utilising the unique Powerstar voltage optimisation technology along with bi-directional inverters to provide an innovative energy storage system for businesses. FEATURES BENEFITS • Can be used with existing renewable infrastructure • • • • • • • Suitable for any commercial or industrial building where Powerstar is installed • Universal design, suitable for use globally • Durable design for most environments and climates • Integrated data logging • Outdoor enclosure • • • • • Emergency power mode • Full UPS site support capability up to 2 hours • Fully electronically regulated voltage output • Phase balancing • • Harmonic reduction • Power factor improvement • Maximise savings by storing electricity locally Reduce costs by coming off grid at times of high tariff Eliminate risk of network interruption Guarantee stable and reliable power at all times Make your facility grid independent at any time Integrate with onsite renewables to maximise cost benefits Eliminate use of inverters on renewables Reduce cost of renewable installations Reduce the need for diesel generators Become a virtual power station and participate in National Grid incentive schemes (STOR, EDR & FDR) Reduce maintenance costs of onsite electrical equipment 100% savings guarantee SOLAR ARRAY EXISTING INVERTERS Diagram 1. SOLAR ARRAY STORE LOAD STORAGE SOLAR ARRAY INVERTERS REMOVED SOLAR ARRAY LOAD Solar array with inverters, before the installation of Powerstar Virtue. Diagram 2. Solar array, after the installation of Powerstar Virtue. For existing solar arrays, Powerstar Virtue can be fitted utilising the existing inverters on site. For companies looking to install solar arrays in the future, Powerstar Virtue can remove the need to purchase solar inverters. 5 EXAMPLE OF VIRTUE EFFECTS ON ELECTRICITY PROFILE Commercial store load profile (HHD) with solar panels on a sunny day BEFORE POWERSTAR VIRTUE AFTER POWERSTAR VIRTUE 140 Store Load Solar Store Load Solar 120 100 kWh (HH) 80 60 40 20 00:30:00 01:00:00 01:30:00 02:00:00 02:30:00 03:00:00 03:30:00 04:00:00 04:30:00 05:00:00 05:30:00 06:00:00 06:30:00 07:00:00 07:30:00 08:00:00 08:30:00 09:00:00 09:30:00 10:00:00 10:30:00 11:00:00 11:30:00 12:00:00 12:30:00 13:00:00 13:30:00 14:00:00 14:30:00 15:00:00 15:30:00 16:00:00 16:30:00 17:00:00 17:30:00 18:00:00 18:30:00 19:00:00 19:30:00 20:00:00 20:30:00 21:00:00 21:30:00 22:00:00 22:30:00 23:00:00 23:30:00 00:00:00 0 Time Typical load profile (green-yellow-red) of a store fitted with 200 kW solar panels on a particularly sunny summers day. The direct effect of solar on the load profile is quite substantial, reducing the stores overall consumption of electricity by 32.6%. However, the majority of this load reduction occurs during non - peak hours, with solar only reducing the load requirement of the store during peak tariff times by 18%. The graph above shows Powerstar Virtue utilising both negative power and solar power in such a way as to prevent the store ever demanding more than 100kWh per half hour of energy from the grid, as well as removing the site completely from grid power during peak Tariff. HHD profile of a commercial store load without on-site renewable generation BEFORE POWERSTAR VIRTUE A typical load profile for a commercial store with no on site renewables. The green line indicates low tariff periods, the yellow line indicates medial tariff periods, and the red region indicating the high peak tariff periods. The dark shaded column illustrates the region that the facility needs to avoid incurring highest costs and inconsistent supply. AFTER POWERSTAR VIRTUE The same profile with Powerstar Virtue. The high peak tariff period has been completely avoided by powering the site entirely from the Virtue storage medium. The rest of the load profile has remained unaltered, because the storage medium was charged using the induced negative power, not power from the grid. Therefore not only is the consumer saving money, but they are also directly reducing kWh usage, both for themselves and the grid. POWERSTAR SPECIFICATIONS Powerstar Virtue is integrated with a Powerstar MAX or Powerstar HV MAX system. % British Engineered. 100% Guaranteed Results. The Powerstar MAX range of electronic-dynamic, variable voltage optimisation systems provide a stable voltage output by automatically adjusting and maintaining voltage at the optimum level. NUMBER OF PHASES 3 FREQUENCY 50/60Hz RATING 144 kVA 200 Amps per phase AMBIENT TEMP/ALTITUDE -10 °C to + 40 °C up to 1,000m above sea level conditions (outside these please contact us) SUPPLY VOLTAGE 400V nominal ENCLOSURE IP23 as standard OUTPUT Nominally 380V (or user defined) EFFICIENCY 99.94% - 99.99% MAX LOAD LOSSES 7278 watts (example 1500kVA) CORE MATERIAL Cold rolled Silcon steel MAX NO LOAD LOSSES 490 watts (example 1500kVA) WEIGHT Example 1500kVA - 1,200kgs Powerstar HV MAX provides a combined solution to two common problems, combining a super low-loss amorphous core HV/LV transformer with integrated variable voltage optimisation technology. The super-low loss amorphous core transformer used in Powerstar HV MAX will provide 3%-10% savings on traditional HV/LV transformers. NUMBER OF PHASES 1 Off per HV supply FREQUENCY 50/60 Hz RATING 350 - 2500 kVA AMBIENT TEMP/ALTITUDE -10 °C to + 40°C up to 1,000m above sea level conditions (outside these please contact us) PRIMARY VOLTAGE N/A ENCLOSED IP65 (ONAN) / IP23 Ventilated (Dry) SUPPLY VOLTAGE 4.16-33kV, 3ph nominal EFFICIENCY ONAN Class A, Dry type, Class F minimum SECONDARY VOLTAGE 433 Nominal with electronically regulated 380V (or user defined) VECTOR GROUP Dyn11 HV MAX LOAD LOSSES 11,700 watts (1500 kVA Dry) CORE MATERIAL Amorphous Steel - super low loss Powerstar design HV MAX NO LOAD LOSSES 700 watts (Example 1500 kVA dry) WEIGHT Example 1500 kVA - 7,500kgs ONAN / 5,300kgs Dry 7 www.twitter.com/powerstarvo www.linkedin.com/company/powerstar www.youtube.com/emspowerstar EMSc (UK) Limited EMS House, 4 Cowley Way, Ecclesfield, Sheffield, S35 1QP T: +44 (0)1142 576200 | F: +44 (0)1142 572699 E: [email protected] | www.powerstar.com | www.ems-uk.org Powerstar is a registered trademark of EMSc (UK) Ltd, company reg: 4209907. Registered in England and Wales. Registered with BERR MAS as a centre of expertise in manufacturing