Apr 2014
Electricity Transmission
Granular Voltage Control (GVC)
NIA_NGET0134
Complete
Apr 2014
Dec 2014
National Grid Electricity System Operator and National Grid Electricity Transmission
Nikola Gargov
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Network Innovation Allowance
None
Low Carbon Generation
£396,050.00
Phase 1 – develop a working prototype of the GVC with the following deliverables;

  • GVC concept proved and tested.

  • Working prototype available.

  • Report delivered on this phase (Report).

Phase 2 – small scale trial of the GVC to determine whether dynamic voltage control is a viable primary frequency response solution, dependent upon the successful completion of Phase 1 and with the following deliverables;

  • Communications and frequency algorithms proved and tested in the field (Report).

  • Testing and field trials completed (Report).

  • Analysis report delivered (Report).

  • Project completed (Full Report).

Phase 1  (develop a working prototype of the GVC with the following deliverables) objectives;

Enhance the automatic voltage control functionality to provide fast response (within 500ms) to frequency trigger with appropriate communications and aggregation solutions to provide real-time data on the aggregate capacity.

Phase 2 (small scale trial of the GVC to determine whether dynamic voltage control is a viable primary frequency response solution, dependent upon the successful completion of Phase 1 and with the following deliverables) objectives;

Demonstrate the GVC across 6 sites to evaluate the level of response provided (expected to be 2 - 20kW per site) and to allow testing and analysis of the GVC in response to NGET requirements.

Prove the capability of GVC units in a small scale trial and identify areas for enhancement of the GVC / communications.

Develop a plan to harness the existing voltage control installed base and functionality of the new automatic voltage control to provide larger scale frequency response and RoCoF services in the future.

To judge the success of the project the following success criteria are proposed:

  • Demonstrate the feasibility of 500ms response to provide Rapid Frequency Response and/or primary/secondary response from dynamic voltage control on demands.

  • Aggregation of remote voltage control unit output to provide a virtual power plant; and

  • Deliver a final report at the end of the project that demonstrates the technical merits of GVC and the validity of the CBA.