Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.11c
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- Pages.932-934
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- 1998
Improvement of Transient Grounding Performance with Auxiliary Grounding Grid
보조접지망에 의한 과도접지성능의 개선
- Choi, Jong-Kee (KEPCO) ;
- Jung, Gil-Jo (KEPCO) ;
- Kim, Seon-Gu (KEPRI)
- Published : 1998.11.28
Abstract
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.
Keywords