대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1999년도 하계학술대회 논문집 E
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- Pages.2352-2354
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- 1999
접촉전압 저감을 위한 변전소 접지망 설계
Design of Substation Grounding Grid for Reduction of Touch Voltage
- Choi, J.K. (KEPRI) ;
- Kee, H.C. (KEPRI) ;
- Jung, G.J. (KEPRI) ;
- Kim, B.J. (KEPCO)
- 발행 : 1999.07.19
초록
The purpose of substation grounding system is to provide reference potential with power system and protect field workers from electrical shock resulted from unsymetrical power system faults. For this purpose, grounding grid should be designed to maintain max, touch voltage under safety criteria in fault conditions. It is difficult, however, to design a safe grounding grid at very resistive or narrow area. This paper describes an example of substation grounding grid design procedures in such areas with very severe design conditions. By using grounding conductors, which is located close to earth surface, earth surface potential could be controlled effectively, so that maximum touch voltages is to be maintained under safety criteria.
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