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Reference Number NIA_NGET0193
Title Project DESERT (hybrid battery and solar enhanced frequency control)
Status Completed
Energy Categories Renewable Energy Sources(Solar Energy, Photovoltaics) 75%;
Other Power and Storage Technologies(Energy storage) 25%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
National Grid Electricity Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 September 2016
End Date 01 January 2018
Duration 18 months
Total Grant Value £500,000
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
Web Site
Objectives Innovative command and control schemes will be implemented that enable the battery to respond to external control signals. Demonstrate how battery storage can best be coordinated to provide an optimised response across a range of resource providers. Optimise the capability of battery storage and solar PV power plants in delivering grid services on different levels. Support the development of performance requirements in parallel with EFCC (NIC) project for roll out of a new balancing The project is successful if we improve understanding of Availability of batteries for enhanced frequency response with solar PV including impact on OPEX costs Potential market share of battery storage and solar PV in ancillary service market Site specific benefits and limitations of enhanced frequency response at as well as for voltage stabilisation Potential contribution of battery storage combined with renewables towards the availability and volume of frequency response, reactive power support
Abstract In Great Britain the transmission system frequency is nominally 50Hz and the System Operator caters for various imbalances caused by changes in demand or generation to maintain the frequency in accordance with the National Electricity Transmission System Security and Quality of Supply Standard (NETS SQSS). However, the lower the system inertia (due to the increased connection of more converter based technologies and reduction in large thermal generation plant), the more susceptible a transmission system is to a higher rate of change of frequency (RoCoF) following the loss of a significant volume of generation or demand. An increase in the speed and volume of frequency response available would mitigate against this susceptibility. At the end of 2015 it was anticipated that solar PV would contribute 9. 6GW of installed capacity by 2020. National Grid’s Gone Green energy scenario indicates solar will reach approximately 20GW by 2020 As the volume of intermittent generation sources grows, the demand seen by the transmission system will become increasingly volatile and pose challenges in predicting demand and therefore operation of the transmission system. In addition to managing the system with increasingly volatile periods of transmission demand, solar PV is connected to the system via power electronics and therefore does not provide inertia. This contributes to reducing system inertia necessitating increased frequency response to be held by the System Operator. Historically to operate the system in low demand periods, generation is constrained and interconnector imports restricted. However, as a greater proportion of generation is supplied from intermittent sources, more frequency response will be required from alternatives to conventional generation An alternative approach is to combine solar PV with battery storage. This will allow storage to be used to better regulate or smooth the transmission demand profile or be used to provide response during periods of rebalancing as other conventional plant ramps up to provide a sustained response to maintain frequency within limits. Use of batteries would offer the flexibility either to reduce the effective generation contribution to the distribution system, or to provide additional fast response to support frequency containment under high RoCof events, offsetting the reliance upon the natural inertia of (slower responding) conventional generation Belectric are planning to install a 1MW/1MWh battery storage unit at the Rainbows solar PV site (3. 8MWp, near the village of WIllersey) in Gloucestershire. They have agreed to permit National Grid to undertake an agreed set of trials to investigate frequency and voltage provision from hybrid solar PV and battery storage. Belectric are a partner in the EFCC project, and the trials being undertaken within the scope of this NIA project will make use of the monitoring and control system being developed by GE Grid Solutions offering efficient leverage of work already underway. This monitoring and control system detects a specific Rate of Change of Frequency (RoCoF) and utilises local and wide area measurement to initiate a proportionate frequency response. For optimum efficiency this project will be managed alongside existing EFCC work streams.Note : Project Documents may be available via the ENA Smarter Networks Portal using the Website link above
Publications (none)
Final Report (none)
Added to Database 26/10/18