The Electric Power System - Republic of Korea - Republic of Korea Power System 1 2 Basic facts ❑ Area : 49,720㎢ ❑ Population : 51,465,228(2014) ❑ Number of electricity consumers : 21,209 thousand ❑ Number of TO(Transmission Owner) : 1(KEPCO) ❑ Number of ISO : 1(KPX) ❑ Number of DSO : 1(KEPCO) ❑ Peak load : 77,295(2014) ❑ Average interruption of electricity : 10.9 min(2014) Republic of Korea Power System 2 3 Global map of the grid and of its interconnections Sin-Dukheun Sin-Gapyung Yangyang P/P Uijeongbu Seo-Incheon C/C Yangju Sungdong Migum ❑ Interconnectors with: Chungbu Seo-Incheon Youngdeungpo Sin-YangjeDong-Seoul Donghae Incheon T/P, C/C Sin-BupyungYoungseo Sin-Sungnam ➢ No interconnection between Sin-Incheon Seo-seoul Gonjiam Sin-Taebaek Sin-Sihung Sin-Youngin other countrys Sin-Ansan Pyungtaek T/P, C/C HwasungSin-suwon Uljin N/P Dangjin T/P Sin-Ansung Ansan Sin-Jecheon Sin-Youngju Taean T/P Sin-Jincheon Sin-DangjinSin-seosan Chungwon Sunsan Cheongsong P/P Sin-onyang Sin-Youngil Boryeong T/P, C/C Seo-Daegu Chungyang Sin-Okcheon Buk-Daegu Sinkaedong ShinPohang Gunsan Wolseong N/P Sin-KyeongsanUlju Daegu Ulsan TP, C/C Sin-Ulsan Muju P/P Goryeong Sin-Onsan Sin-Gimje Sincheong P/P Sin-Namwon Bukbusan Kori N/P Sin-Yangsan Nam-Pusan Youngwang N/P Pusan C/C Euiryong Sin-Gimhae Sin-Masan Sin-Gwangju Hadong T/P Samcheonpo T/P Sin-Gosung Gwangyang Gwangyang Steel Sin-Hwasun Gwangyang C/C Sin-Gangjin Yeosu N/P Haenam C/S Jeju T/P Hanrim CC Namjeju Republic of Korea Power System 3 4 Grid facts and characteristics ❑ The electricity grid in Korea is sub-divided into transmission grids (EHV, HV, DC) and distribution grids (medium and low voltage) Voltage Level Total length Responsibility Extra High Voltage 765kV 1,014 km KPX Extra High Voltage 345 kV 9,369 km KPX High Voltage 154 kV 22,440 km KPX Medium Voltage 66kV 144 km KEPCO Low Voltage 22.9kV 452,572 km KEPCO Voltage Level Total length Responsibility DC 180kV 231 km KPX Republic of Korea Power System 4 5 Structure of electrical power system Conventional Generation Bulk-Industry 765 kV 345 kV 154 kV Industry Industry 22.9 kV Industry Dispersed 220 V Generation Households Republic of Korea Power System 5 6 Map of the high voltage grid 1960’s Present Republic of Korea Power System 6 7 Information on ISO, TO & DSO ❑ Name : KEPCO(TO&DSO), KPX(ISO) ❑ Network length (C-Km) : 485,770 ❑ Served area (km²) : 49,720 ❑ website: http://www.kepco.co.kr, http://www.kpx.or.kr Republic of Korea Power System 7 8 Cooperation of ISO, TO and DSO ❑ Transmission System ➢ ISO builds transmission operations and planning ➢ TO implements the planning builted by ISO ❑ DSO(KEPCO) ➢ DSO builds distribution operations and planning, and implements the planning Republic of Korea Power System 8 9 Responsibilities of ISO, TO and DSO ❑ ISO(KPX) ➢ Responsible for maintaining the generation and the transmission system reliabilities ❑ TO(KEPCO) ➢ Responsible for maintain the transmission asset ❑ DSO(KEPCO) ➢ Responsible for distribution system qualities Republic of Korea Power System 9 10 Power structure of the country Republic of Korea Power System 10 11 Installed capacity with reference to primary resources ❑ Installed capacities (MW), 2018 Renewable 9,509 Oil 4,136 Hydroelectric 6,490 Nuclear 22,529 Gas 37,374 Coal 36,709 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 Republic of Korea Power System 11 12 Energy production with reference to primary ressources ❑ Electricity generated (TWh), year Renewable 3,620 Oil 202 Hydroelectric 497 Nuclear 9,422 Gas 13,202 Coal 16,156 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Republic of Korea Power System 12 13 Development of generation capacity since 2009 35.0% 30.0% 25.0% Renewables Hydro 20.0% Coal 15.0% Nuclear Gas 10.0% Oil 5.0% 0.0% 2009 2010 2011 2012 2013 2014 Republic of Korea Power System 13 14 Comsuption Power comsuption by consumer groups, 2017 Agri., Mining, 0.3 % For.&Fishery, 3.1% Service, 28% Manufacturing 51% Residential, 13% Public 5% Manufacturing Residential Public Service Agri., For.&Fishery Mining Republic of Korea Power System 14 15 Location of renewable energy sources operation planned Republic of Korea Power System 15 16 Development of wind power 700 90 78 80 600 604 70 555 70 500 477 60 407 49 Development of 400 50 377 346 Capacity 300 40 Accummulated 31 30 30 capacity 200 20 100 10 - - - 2009 2010 2011 2012 2013 2014 Republic of Korea Power System 16 17 Development of photovoltaic power 2,000 800 711 1,800 1,791 700 1,600 600 1,400 500 1,200 Development of 390 1,080 1,000 400 Capacity 800 Accummulated 300 690 capacity 600 555 511 200 400 417 135 94 100 200 44 - - - 2009 2010 2011 2012 2013 2014 Republic of Korea Power System 17 18 RES installed capacity and production since … GWh MW 16,000 5,000 RES generation Y[GWh] 4,500 14,000 Installed capacity[MW] 4,000 12,000 3,500 10,000 3,000 8,000 2,500 2,000 6,000 1,500 4,000 1,000 2,000 500 0 - 2,009 2010 2011 2012 2013 2,014 Republic of Korea Power System 18 19 Price development for industry consumers Average price for electricity for industry consumers [cent/kWh] 10.00 9.00 8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Republic of Korea Power System 19 20 Price development for households Average price for electricity for households [cent/kWh] 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Republic of Korea Power System 20 21 Energy exchanges in …. Republic of Korea Power System 21 22 Power balance in 2014 ❑ Generation : 521.97(TWh) ❑ Consuption : 503.7(TWh) ❑ Losses : 18.27(TWh) Republic of Korea Power System 22 23 Electricity market organisation Republic of Korea Power System 23 24 Specific aspects of the electricity market ❑ Cost Based Pool (CBP) ❑ Compulsory Power Pool ❑ A Day Ahead Market ❑ Uniform Pricing ❑ Capacity Payment (CP) ❑ Ancillary Service Fee Republic of Korea Power System 24.