CIGRE Belgium presentation on Actively Managing Distribution Connected Generation

1. v Brussels Conference 12-13 March 2014 - 1 - CIGREBELGIUM2014Conference ACTIVELY MANAGING DISTRIBUTION CONNECTED GENERATION FEEDING INTO DISTRIBUTION AND TRANSMISSION CONTRAINTS Session 1B / R Anderson & A Gooding / United Kingdom

2. v Brussels Conference 12-13 March 2014 - 2 - CIGREBELGIUM2014Conference Iberdrola at a Glance Presence in 40 countries worldwide

3. v Brussels Conference 12-13 March 2014 - 3 - CIGREBELGIUM2014Conference SP Energy Networks Overview • Distribution Assets - 3.5m connected customers - 16% of annual electricity bill - Host 28% of UK’s distributed renewable generation but only 14% of customer base • Transmission Assets (Scotland) - 4% of annual electricity bill - 56% of Scotland’s transmission connected renewable generation

4. v Brussels Conference 12-13 March 2014 - 4 - CIGREBELGIUM2014Conference Agenda • Background • The Problem • The Solution

5. v Brussels Conference 12-13 March 2014 - 5 - CIGREBELGIUM2014Conference Problem Trial Area

6. v Brussels Conference 12-13 March 2014 - 6 - CIGREBELGIUM2014Conference Problem

7. v Brussels Conference 12-13 March 2014 - 7 - CIGREBELGIUM2014Conference The Problem • Exporting Grid Supply Point • Multiple issues during N-1 Contingencies • High cost connection charges as a consequence of thermal constraints • High cost connection charges as a consequence of voltage rise constraints • The impact of Small Scale Generation on the Exporting GSP

8. v Brussels Conference 12-13 March 2014 - 8 - CIGREBELGIUM2014Conference 60 MVA Limit Firm Capacity Calculated based upon Maximum Generation / Minimum Demand Managing Constraints at GSP 120 MVA Limit 62 MW Unconstrained Grid Supply Point 132kV 33kV Transmission Network Distribution Network Demand Min 10 MW – Max 36 MW Max Generation Min Demand Network Capacity Available Capacity Fully Intact 110 MVA 10 MVA 120 MVA + 20 MVA N-1 110 MVA 10 MVA 60 MVA - 40 MVA 48 MW Constrained 9 MW ANM Controlled 27 MW ANM Controlled

9. v Brussels Conference 12-13 March 2014 - 9 - CIGREBELGIUM2014Conference Managing Constraints at GSP  Connection Transmission Reinforcement Cost Estimate - £20M  Connection Date beyond 2020  Both New Sites Have Planning! 62 MW Unconstrained Transmission Network Demand Min 10 MW – Max 36 MW 120 MVA Limit 90MVA90MVA 48 MW Constrained 9 MW ANM Controlled 27 MW ANM Controlled

10. v Brussels Conference 12-13 March 2014 - 10 - CIGREBELGIUM2014Conference The Solution • Accelerating Renewable Connections www.arc-project.com • £8.4M project funded through the Low Carbon Network Fund managed by OFGEM • Project Partners

11. v Brussels Conference 12-13 March 2014 - 11 - CIGREBELGIUM2014Conference The Solution

12. v Brussels Conference 12-13 March 2014 - 12 - CIGREBELGIUM2014Conference The Solution Requirements for an Actively Managed Network: • Operate autonomously • Hard real time • End to end determinism • State driven logic • Constant idling rather then event initiated • Predictable and repeatedly able to handle relationships between multiple devices and multiple constraints

13. v Brussels Conference 12-13 March 2014 - 13 - CIGREBELGIUM2014Conference The Solution – A New Layer

14. v Brussels Conference 12-13 March 2014 - 14 - CIGREBELGIUM2014Conference The Solution – Top Down ANM 132/33kV 60MVA 132/33kV 60MVA Wind Farm 1 62.5 MW 33/11kV 7.5MVA 33/11kV 7.5MVA 5 MW 22.5 MWWind Farm 2 48 MW 33/11kV33/11kV Wind Farm 3 9 MW Energy From Waste Plant 3 3 3 MP1 MP2 MP3 MP4 = MP1 + MP2 Existing Communications 8.5 MW

15. v Brussels Conference 12-13 March 2014 - 15 - CIGREBELGIUM2014Conference The Solution Commercial Arrangements: • Non-Firm connection agreements - Estimation of annual curtailment - No compensation for curtailment (Up front benefit banked!) • Managing constraints across boundaries - Agreement with the TNO and TSO to manage constraints created by distribution connected generation • Investigating new community connection to encourage local demand or storage interaction

16. v Brussels Conference 12-13 March 2014 - 16 - CIGREBELGIUM2014Conference The Solution

17. v Brussels Conference 12-13 March 2014 - 17 - CIGREBELGIUM2014Conference The Solution Thank You Alan Gooding Commercial Director, Smarter Grid Solutions www.smartergridsolutions.com Ross Anderson Senior Design Engineer, SP Energy Networks www.spenergynetworks.co.uk