대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2008년도 제39회 하계학술대회
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- Pages.337-338
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- 2008
765kV 송전선로 낙뢰고장 분석 및 대책
Analysis and Countermeasure of Lighting Fault on 765kV Transmission Lines
- Min, Byeong-Wook (Korea Electric Power Corporation) ;
- Lee, Sung-Hak (Korea Electric Power Corporation) ;
- Kim, Ho-Ki (Korea Electric Power Corporation) ;
- Kang, Yeon-Woog (Korea Electric Power Corporation) ;
- Bang, Hang-Kwon (Korea Electric Power Corporation) ;
- Park, Jae-Ung (Hanbat National University)
- 발행 : 2008.07.16
초록
KEPCO has built, for the first time in the world, 765㎸ double circuit transmission lines which use vertically arranged phase conductor, while 765㎸ transmission lines in other countries are single circuit lines and use horizontally arranged phase conductor. System operating voltage, switching overvoltage, and lightning overvoltage were considered in determining the air gap. Recently, however, lightning outage rate of some 765㎸ transmission lines in KOREA shows that it is more than what is expected. Lightning fault of 765㎸ transmission lines is mostly single phase grounding fault which can be reclosed. But it still needs to be carefully managed, for the bulk system like 765㎸ transmission lines have huge effects on whole power system. This paper introduces analysis and countermeasure of KEPCO's 765㎸ transmission line lightning outage.
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