대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

접지그리드의 접지임피던스 측정 기법

Measurement method of ground impedance for the grounding grid

  • 이복희 (인하대학교 IT공대 전기공학부) ;
  • 최종혁 (인하대학교 IT공대 전기공학부) ;
  • 최영철 (인하대학교 IT공대 전기공학부) ;
  • 유재덕 (인하대학교 IT공대 전기공학부) ;
  • 백영환 (인하대학교 IT공대 전기공학부) ;
  • 김동성 (인하대학교 IT공대 전기공학부) ;
  • 신희경 (인하대학교 IT공대 전기공학부) ;
  • 유양우 (인하대학교 IT공대 전기공학부)
  • 발행 : 2009.07.14
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초록

In these days, the common grounding systems are adapted in most large structures. In order to evaluate the performance of grounding system, it is needed to measure ground impedance. Measuring methods of ground impedance for a large scale grounding systems have not been yet presented in detail. In this paper, we analyze earth mutual resistance and mutual coupling of $15{\times}15m$ grounding grid in different arrangements of auxiliary electrode. As a results, the auxiliary electrodes are installed where the error rate due to earth mutual resistance is less than 5%. Also, the potential lead is installed at obtuse angle from the current lead and the overlapped length between potential lead and grounding grid are minimized.

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