대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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- Pages.932-934
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- 1998
보조접지망에 의한 과도접지성능의 개선
Improvement of Transient Grounding Performance with Auxiliary Grounding Grid
- Choi, Jong-Kee (KEPCO) ;
- Jung, Gil-Jo (KEPCO) ;
- Kim, Seon-Gu (KEPRI)
- 발행 : 1998.11.28
초록
In an electric substation, there are many sources of surge such as switching operations or lightning strokes. A grounding system submitted to such surge current presents very different behaviour from the observed under low frequency current. Especially, it has been reported that significant overvoltage occurs at the current feed-in point, and this may cause damages to other grounded components in the substation area. This paper describes the basic mechanism of improvement of grouding performance in transient state with auxiliary grounding grids.
키워드