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Security of Supply from the Power System

Security of Supply from the Power System. Dr. Graham Ault Institute for Energy & Environment. Outline. Current arrangements for electricity security Risks to current security position Outcomes of the Ofgem LENS project Trends, targets, policies, threats and opportunities.

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Security of Supply from the Power System

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  1. Security of Supply from the Power System Dr. Graham Ault Institute for Energy & Environment

  2. Outline • Current arrangements for electricity security • Risks to current security position • Outcomes of the Ofgem LENS project • Trends, targets, policies, threats and opportunities

  3. Security from Generation • Adequacy • Reliability • Generation • Demand

  4. Security from the Power Network • Transmission planning • Transmission operations • Distribution • Angular stability • Voltage stability • Thermal limits

  5. Security from the Power Network

  6. Risks to current security position • Changes in plant margin (consenting/planning, LCPD) • Different generation technologies (‘capacity value’ of plant margin) • Desire for cheaper and quicker generation connections • Evolving demands for electrical energy • Regional (‘transmission group’) differences • Development of offshore grids • Inter-connectors to EU mainland • Growing commercial value of electricity transport • Ageing network assets

  7. Ofgem LENS project • Commissioned to inform various debates about the future of networks in GB • Scenarios chosen to provide a mechanism to bring together all issues, drivers and concerns

  8. Outcomes of the LENS project • Broad range of plausible outcomes for networks in the longer term • relatively large amount of uncertainty • status quo does not look likely • stranding of assets might be more tangible in future • Information and communications infrastructure plays an important role across the scenarios supporting generation (all scales), network and demand side activities - and often a mix of all three • Interaction and interdependence of different networks grows over time (transport, gas, electricity, heat, communications) – this adds complexity • Closer operational and planning relationship between transmission and distribution entities likely under several scenarios

  9. Implications of trends, targets and policies • Architecture of Scottish power system is already changing but is likely to change at significant rate over the coming years • Transmission: new EHV routes developed, existing EHV circuits upgraded, HVDC interconnection, power electronics compensation, offshore connections, EU interconnection • Distribution: more activity in generation and consumer demand response, penetration of new technologies (communications, control, smart meters, energy storage • Security will be central to energy policy choices and network development paths • Balancing need for efficient connection of new energy sources without compromising network security • Work to be done to revise and adapt security standards to keep pace with change

  10. Rising to the Security Challenge • Network companies: • Transmission and distribution owners • GB system operator • Industry governance groups: • GB SQSS • Grid Code • CUSC • ENSG • Research: • EPSRC SuperGen programmes • ‘UK Centre for Wind Energy Research’ (ETI and DTC) • DECC Centre for Sustainable Electricity and Distributed Generation • Industrial funded network research partnerships (SSE, SP, BE)

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