Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Charicteristics of Stationary and Transient Ground Impedance of Large-Scale Grounding Piles

임펄스 전류에 대한 대규모 접지시스템의 정상상태 및 과도상태의 접지임피던스 특성

  • Lee, B.H. (Dept. of Electrical Engineering, Inha University) ;
  • Lee, S.C. (Dept. of Electrical Engineering, Inha University) ;
  • Park, J.S. (Dept. of Electrical Engineering, Inha University)
  • 이복희 (인하대학교 공대 전기공학과) ;
  • 이승칠 (인하대학교 공대 전기공학과) ;
  • 박종순 (인하대학교 공대 전기공학과)
  • Published : 1999.07.19
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Abstract

The stationary ground resistance and the transient ground impedance of grounding system are very important parameters in the field of lightning and surge protection. But, it is very difficult to obtain correct values of them in large-scale grounding system. In this paper, the stationary and transient ground impedances of a large-scale grounding system have been measured and analyzed under impulse currents. In order to obtain correct values of them, we have described Z-v(impedance vs ground potential rise) distributions and Z-t waveforms. The transient ground impedance of 36 [m] long three-parallel grounding piles have showed the inductive aspects and the hysterisis region under impulse currents.

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