The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Separation Distance Calculation Model for Limitation of Earth Potential Rise Nearby Tower Footings

송전철탑 부근의 대지전위 억제를 위한 이격거리 산정모델 연구

  • 최종기 (한전 전력연구원 전력계통연구소) ;
  • 조환구 (한전 송변전건설처 건설기술팀) ;
  • 김태영 (한전 송변전건설처 건설기술팀) ;
  • 이동일 (한전 전력연구원 전력계통연구소)
  • Published : 2008.02.01
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Abstract

In case of a line-to-ground fault at transmission lines, a portion of fault current will flow into the earth through the footings of the faulted tower causing electrical potential rise nearby the faulted tower footings. In this situation, any buried pipelines or structures nearby the faulted tower can be exposed to the electrical stress by earth potential rise. Although many research works has been conducted on this phenomena, there has been no clear answer of the required separation distance between tower footings and neary buried pipeline because of its dependancy on the soil electrical charactersics of the concerned area and the faulted system. In this paper, an analytical formula to calculate the requried sepeartion distance from the faulted tower has been derived.

Keywords

References

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