Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Effects of Length of Down Conductor on Transient Ground Impedance

인하도선 길이에 따른 과도접지임피던스 특성

  • Lee, B.H. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Jeong, D.C. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Lee, S.B. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Lee, T.H. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Jung, H.U. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Lee, K.S. (Inha University, Hanjin Heavy Industries & Construction) ;
  • Lee, S.C. (Inha University, Hanjin Heavy Industries & Construction)
  • 이복희 (인하대학교, 한진중공업) ;
  • 정동철 (인하대학교, 한진중공업) ;
  • 이수봉 (인하대학교, 한진중공업) ;
  • 이태형 (인하대학교, 한진중공업) ;
  • 정현욱 (인하대학교, 한진중공업) ;
  • 이규선 (인하대학교, 한진중공업) ;
  • 이승칠 (인하대학교, 한진중공업)
  • Published : 2005.07.18
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Abstract

This paper presents the transient impedance behaviors of grounding systems to lightning impulse current. The potential rise and effective impulse ground impedance of the test grounding electrodes were measured as a function of the rise time of impulse currents and lengths of down conductor. The transient ground impedances strongly depend on the configuration and size of grounding electrodes, the impulse current shapes and lengths of down conductor, and the inductance of reduce of grounding electrode inductance is an important factor to improve the transient ground impedance.

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