《present and future of gb t d network for csg training centre》培训课件.pptxVIP

Past, Present Future of the British Transmission and Distribution Network Lecture for China State Grid Training Centre Wednesday 19 August 2015 Professor Peter Crossley Director of the EPSRC Centre for Doctoral Training in Power Networks Professor of Power Systems at The University of Manchester Guest Professor of State Grid of China Technology College Does temperature rises affect TD networks ? Yes, mainly due to extreme weather events and resulting political, environmental and societal pressure Great Britain electricity transmission network Legacy Transmission Network built around centralised coal stations in “Midlands of England” in 1950’s and 60’s’ Incremental growth since late 60’s. peak demand relatively stable at 50 – 55GW generation available 75 – 80GW Generation closures planned due to age, climate change/renewables legislation closure of 12GW coal 7GW nuclear by 2020 Require to connect 32GW of wind by 2020. Expect significant new non-renewable build 3GW of nuclear, 3GW of new supercritical coal (with CCS), 11GW of gas In 2013, UK networks delivered 305TWh of energy per year Generation on GB electricity network Near Future:- Strengthening of GB network Cost of replacing transmission networks = £30.6 billion Offshore Wind Scotland = 5GW North West = 6GW Bristol Channel = 3GW South Coast = 1.6GW East Anglia = 6 GW East Coast = 18GW Total Capacity = 40GW Breakdown of UK domestic dual fuel bill: Britain’s energy supplies undergone a profound change over the last 15 years. Moved from era where energy prices were falling (late 1990s to around 2003) to a period when cost of gas and electricity has risen. Moved from being self-sufficient in gas to a country dependent on gas imports. This, together with environmental targets and the need to invest in ageing power stations and energy networks, has increased pressure on prices. Problem: UK energy sector requires £200 billion of investment Projected new UK generation (2013 – 2030) So