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Network Connected Batteries

Alistair Steele. Network Connected Batteries. SSEPD Energy storage projects. 1 MW NaS Battery. 2 MW Lithium Battery. 2011. 2008. 2010. 2012. 3 x 25 kW Lithium Batteries. 100 kW Flow Battery. Shetland 1MW Battery. Installed 1 MW / 6 MWh NaS battery.

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Network Connected Batteries

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  1. Alistair Steele Network Connected Batteries

  2. SSEPD Energy storage projects 1 MW NaS Battery 2 MW Lithium Battery 2011 2008 2010 2012 3 x 25 kW Lithium Batteries 100 kW Flow Battery

  3. Shetland 1MW Battery

  4. Installed 1 MW / 6 MWh NaS battery • Significant safety incident in Japan has halted progress • Currently awaiting results of detailed investigation before making a decision on project status

  5. LV Connected Energy Storage

  6. Project drivers • The uptake of low carbon technologies is already having an impact on how we operate our LV networks: • Solar PV • Heat pumps • Electric vehicles • Traditional solution is to replace cable / associated plant • Can energy storage be used to mitigate these effects? • Is there an operational / economic case over existing solutions?

  7. Overview • Small array to prove functionality • 3x single phase, 25kVA batteries connected at 230V • Located towards the end of the circuit for SSE Zero Carbon Homes project • Determine operational issues and benefits: • Peak lopping demand & generation • Voltage support from real / reactive power • Aggregated reduction in peak demand and phase balancing

  8. Low voltage connected battery project Network location of the batteries

  9. Low voltage connected battery project Network location of the batteries

  10. Low voltage connected battery project • Site photographs

  11. Low voltage connected battery project • Installation photos – Chalvey, Slough

  12. Low voltage connected battery project • Installation photos – Chalvey, Slough

  13. Low voltage connected battery project Communications schematic

  14. Low voltage connected battery project G59/2 commissioning

  15. Low voltage connected battery project G59/2 commissioning

  16. Low voltage connected battery project Safety & comms testing

  17. Next steps • Presently have a comms fault internal to the battery in two of the units • Working with manufactured to resolve situation • Basic test programme started July 2012 – moving into detailed testing of the units to flatten demand and manipulate voltage • Learning will feed into the larger project rollout under Tier 2

  18. Summary • Project within timescales / budget • Safety case / risk assessment completed • All three battery units successfully installed • Manufacturer commissioning and G59 compliance completed • Radio communications working as intended • Enmac integration complete • Test programme to run for 2 years • Formal learning report released 2014

  19. Orkney Energy Storage Park

  20. Orkney battery - Technology

  21. Orkney battery - Service Based Contract • Battery not owned or operated by network business • Service procured – Constraint management • Battery owner free to trade across multiple markets

  22. Thank you very much for your attention

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