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Transmission and Distribution Overview image
KEPCO’s overseas transmission and distribution business that kicked off in 2001 has heightened KEPCO’s brand value driven by world-class technological skills and know-how gained from the country within and today spearheads KEPCO’s deeper and wider penetration into overseas markets. KEPCO’s overseas power transmission and transformation business left its first landmark by diagnosing and developing Myanmar’s electric power network in 2001 while distribution business first started off by conducting feasibility study on how to improve Philippines power distribution system in 2002.
KEPCO kicked off its first overseas electric power transmission and distribution business in Myanmar and the Philippines and ever since it broadened its coverage to almost all developing countries around the world from the mid 2000s.
KEPCO expanded its electric power transmission and transformation business from Myanmar to Cambodia, Bangladesh, Libya and Ghana as its distribution business expanded its coverage from Libya to Ukraine, Indonesia, Iran and Malaysia. Financing sources for new orders also widened from KOICA in the past to ADB and the World Bank. KEPCO successfully wrapped up its consulting service in Myanmar, the Philippines, Indonesia, Libya, Egypt, Azerbaijan, Ukraine and Paraguay based on its technological skills with global reputation. At the moment, 14 projects are underway in West Africa, Cambodia, Bangladesh, Pakistan and Saudi Arabia. In 2009, KEPCO expanded its business area to EPC, which has big potential for sales growth and job creation in an effort to overcome their limitations in consulting business, which is a small-sized business worth less than two million dollars with limited sales growth. Since then, KEPCO has widely promoted its technological excellence to the world. In the same year, KEPCO won the bid for substation EPC project, transmission line EPC project worth $145 million in Kazakhstan and another distribution EPC project worth $78 million in Indonesia and Dominican Republic.

Status of KEPCO’s T&D Business in Korea

T&D FACILITIES In KOREA

T&D FACILITIES In KOREA
  Voltage Line Length (C-Km) S/S
Transmission
765kV
835
6
345kV
8,653
91
154kV
21,280
644
66kV
251
8
DC 180kV
231
-
Distribution
22.9kV
435,549
2,005,113
  • 765kV Substation
  • 765kV Route
  • 345kV Substation
  • 345kV Overhead Line
  • 345kV underground Line
  • Power Generation Plant
  • DC ± 18kV Cable Link

Power IT Installation

  • AMI for MV : 167,000 Customers (2006)
  • AMI for LV : 517,000 (Completion 2020)
  • SCADA/DMS : 190 systems (2003)
  • DIS/GIS : DIS, Design, WFM (2003)
  • Smart Grid : Test Bed

765kV transmission and transformation equipment

KEPCO has pushed forward 765kV power transmission voltage upgrade project to address serious supply imbalance between high-demand Seoul metropolitan and large-sized power generation complexes and to support efficient use of national land. About 175.9km line linking Dangjin thermal power plant to Shin-seosan and Shin-anseong substation and 154.9km line linking Shin-taebaek to Shin-gapyeong substation are already in operation and the 46.5km line linking Ulchin nuclear power plant to Shin-taebaek substation has been completed as 765kV in April, 2006. The line is currently operating as 345kV but will be upgraded to 765kV by 2014. KEPCO also built 765kV one-circuit line 75km long that links Shin-anseong substation and Sin-gapyeong substation, which started operation in April, 2010, and is now building a 91km two-circuit line linking Shin-kori substation to North Gyeongnam substation. These two lines are expected to play a key role in improving system voltage and supply conditions in Seoul metropolitan and provide conditions to effectively transport electric power generated in high-capacity power plants. The 765kV transmission capacity is around 3.4 times greater than 345kV while land size is decreased by 53% and transmission loss is reduced by 1/7th than when compared to 345kV. The 765kV upgrade project applied with new technology and new processes is expected to enhance technological level of domestic construction firms and materials providers and global competitiveness.
  • 765kV upgrade effect
    • Minimum land required for construction (78% of 345kV)
    • Less electric power loss (20% of 345kV)
    • Easier electric power transportation in large scale (3.4 greater than 345kV)
    • Improved stability of electric power system
    • Enhanced global competitiveness of domestic electric power technologies
    • Advanced high-voltage, electric power technology
765kV upgrade effect image

KEPCO’s Performance

SAIDI - 138/3.3
SAIFI - 56.6/5.0
1990 - 295/1.67
1995 - 39.2/0.81
2000 - 21.5/0.59
2010 - 13.4/0.42
Loss Factor (2011)
(Unit : %)
KEPCO - 3.7(min)
Japan - 4.8
France - 6.9
U.S.A - 7.4
U.K - 7.8
Sales of Overseas T&D Project
(Unit : 100 million)
2010 - 28(min)
2011 - 341
2012.06 - 457
  • * SAIDI : The System Average Interruption Duration Index
  • * SAIFI : The System Average Interruption Frequency Index

Transmission and Distribution Projects Location

Overseas projects including technical consulting and power IT system pilot installation since 2002.
Power IT
China
Egypt
Vietnam
Laos
Phillippines
Indonesia
Paraguay
Consulting
Ukraine
Azerbaijan
Iran
Saudi Arabia
Libya
Bhutan
Pakistan
Myanmar
*WAPP
Cambodia
Canada
EPC
Kazakhstan
Bangladesh
Venezuela

* WAPP : West African Power Pool

       
Don’t forget!
Visit KEPCO’s 765kV Exhibition Hall to see for yourself and learn more about KEPCO’s 765kV power transmission and transformation facilities. Go to 765kV Exhibition Hall