Republic of Korea Power System 1 The Electric Power System - Republic of Korea -
Republic of Korea Power System 1
The Electric Power System
- Republic of Korea -
Republic of Korea Power System 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)
2
Republic of Korea Power System 3
Global map of the gridand of its interconnections
3
Interconnectors with: No interconnection between
other countrys
Daegu
Sin-Okcheon
Jeju T/P
Yangju
Seo-Incheon
Hanrim CC
Namjeju
Seo-Incheon C/C
Incheon T/P, C/CSin-Incheon
Sin-Sihung
Sin-Bupyung
Sin-Dukheun
Chungbu
Youngseo
Dong-Seoul
Uijeongbu
Sungdong Migum
Sin-suwonPyungtaek T/P, C/C
Ansan
Sin-Dangjin
Dangjin T/P
Taean T/P
Sin-onyang
Boryeong T/P, C/C Chungyang
Gunsan
Sin-Gimje
Youngwang N/P
Sin-Gwangju
Sin-Hwasun
Sin-GangjinHaenam C/S
Yeosu N/P
Gwangyang SteelGwangyangHadong T/P
Sin-Namwon
Euiryong
Sincheong P/PMuju P/P
Sinkaedong
Chungwon
Sin-Jincheon
Sin-GosungSamcheonpo T/P
Sin-Masan
Bukbusan
Pusan C/CNam-Pusan
Sin-YangsanKori N/P
Sin-OnsanUlsan TP, C/C
Wolseong N/P
Buk-Daegu
Sunsan
Goryeong
Sin-KyeongsanUljuSin-Ulsan
Sin-Youngju
Sin-Youngil
Cheongsong P/P
Uljin N/P
Donghae
Yangyang P/P
Sin-Jecheon
Sin-Gapyung
Sin-Ansung
Sin-Yangje
Sin-Ansan
Sin-Taebaek
Gwangyang C/C
ShinPohang
Sin-Gimhae
Hwasung
Sin-Sungnam
GonjiamSeo-seoul
Sin-Youngin
Youngdeungpo
Sin-seosan
Seo-Daegu
Republic of Korea Power System 4
Grid facts and characteristics4
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 ResponsibilityExtra High Voltage 765kV 1,014 km KPXExtra High Voltage 345 kV 9,369 km KPX
High Voltage 154 kV 22,440 km KPX
Medium Voltage 66kV 144 km KEPCOLow Voltage 22.9kV 452,572 km KEPCO
Voltage Level Total length ResponsibilityDC 180kV 231 km KPX
Republic of Korea Power System 5
Structure of electrical power system5
765 kV
345 kV
154 kV
22.9 kV
220 V
Industry
Households
Bulk-Industry
Dispersed Generation
Conventional Generation
Industry
Industry
Republic of Korea Power System 6
Map of the high voltage grid6
1960’s Present
Republic of Korea Power System 7
Information on ISO, TO & DSO
Name : KEPCO, KPX Network length (km) : 485,770 Served area (km²) : 49,720 website: http://www.kepco.co.kr,
http://www.kpx.or.kr
7
Republic of Korea Power System 8
Cooperation of ISO, TO and DSO
Transmission System ISO builds transmission operations planning TO implements the planning built by ISO
DSO(KEPCO) DSO builds distribution operations planning and
implements the planning
8
Republic of Korea Power System 9
Responsibilities of ISO, TO and DSO9
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 10
Power structure of the country10
Republic of Korea Power System 11
Installed capacity withreference to primary resources
Installed capacities (MW), 2014
11
0 5000 10000 15000 20000 25000 30000
Others
Biomass
Wind
Solar
Oil
Nuclear
Coal
Gas
11335
137
604
1791
3850
20716
26274
26742
Republic of Korea Power System 12
Energy production withreference to primary ressources Electricity generated (TWh), year
12
2,6
8,3
1,1
2,1
25
156,4
203,4
114,7
0 50 100 150 200 250
Others
Biomass
Wind
Solar
Oil
Nuclear
Coal
Gas
Republic of Korea Power System 13
Development of generation capacity since 2009
13
0,0%
5,0%
10,0%
15,0%
20,0%
25,0%
30,0%
35,0%
2009 2010 2011 2012 2013 2014
Renewables
Hydro
Coal
Nuclear
Gas
Oil
Republic of Korea Power System 14
Comsuption14
households13%
other21%
public institutions2%
industry57%
agriculture3%
streetlight1%
midnight3%
Power comsuption by consumer groups, 2014
Republic of Korea Power System 15
Location of renewableenergy sources
15
operationplanned
Republic of Korea Power System 16
Development of wind power16
-
31 30
70
78
49
346 377
407
477
555
604
-
10
20
30
40
50
60
70
80
90
-
100
200
300
400
500
600
700
2009 2010 2011 2012 2013 2014
Development ofCapacityAccummulatedcapacity
Republic of Korea Power System 17
Development of photovoltaic power
17
-
94
44
135
390
711
417 511 555
690
1 080
1 791
-
100
200
300
400
500
600
700
800
-
200
400
600
800
1 000
1 200
1 400
1 600
1 800
2 000
2009 2010 2011 2012 2013 2014
Development ofCapacityAccummulatedcapacity
Republic of Korea Power System 18
RES installed capacity and production since …
18
-
500
1 000
1 500
2 000
2 500
3 000
3 500
4 000
4 500
5 000
0
2 000
4 000
6 000
8 000
10 000
12 000
14 000
16 000
2 009 2010 2011 2012 2013 2 014
RES generation Y[GWh]
Installed capacity[MW]
GWh MW
Republic of Korea Power System 19
Price development for industry consumers
19
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
9,00
10,00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Average price for electricity for industry consumers [cent/kWh]
Republic of Korea Power System 20
Price development for households
20
0,00
2,00
4,00
6,00
8,00
10,00
12,00
14,00
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Average price for electricity for households [cent/kWh]
Republic of Korea Power System 21
Energy exchanges in ….21
Republic of Korea Power System 22
Power balance in 2014
Generation : 521.97(TWh) Consuption : 503.7(TWh) Losses : 18.27(TWh)
22
Republic of Korea Power System 23
Electricity marketorganisation
23
Republic of Korea Power System 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
24