대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 Techno-Fair 및 추계학술대회 논문집 전기물성,응용부문
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- Pages.212-213
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- 2007
송전철탑 부근의 대지전위 억제를 위한 이적거리 산정모델 연구
A Study on Separation Distance Calculation Model for Limitation of Earth Potential Rise nearby Tower Footings
- Choi, Jong-Kee (Korea Electric Power Research Institute) ;
- Lee, Dong-Il (Korea Electric Power Research Institute)
- 발행 : 2007.11.02
초록
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.
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