Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Transient Characteristics of GIS Grounding Systems by Lightning and Fault

초고압 GIS 접지시스템에서 낙뢰 및 고장에 의한 과도특성 해석

  • 이형수 (한국 산업 안전연구원) ;
  • 심건보 (홍익대학교 공과대학 전기제어공학과) ;
  • 김정훈 (홍익대학교 공과대학 전기제어공학과) ;
  • 정상진 (한전 전력연구원)
  • Published : 1995.11.18
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Abstract

In performing lightning and fault studies in GISs, it is of great importance to accurately model the conductor network consisting of the grounding systems and overhead conductor structures. In particular, the overhead grounded pipe enclosures of the GIS should be appropriately modelled. In this paper, the overhead pipe enclosures of a 500 kV $SF_6$ breaker and substation grounding system are presented in detail. During a phase-to-ground fault, scalar potentials and electromagnetic fields are computed at different frequencies for various conductor network configurations is defined by varying the number of conductors used to represent the pipes at different frequencies are obtained. Such knowledge will be very useful in reducing computation time for a transient ground potential rise study which will be performed in the future.

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