Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Impulse Ground Impedances of a Deeply Driven Ground Rod Combined with Different Shape Grounding Electrodes

형상이 다른 접지전극에 접속된 심매설 봉상 접지전극의 임펄스접지임피던스 특성

  • 이복희 (인하대학교 전자전기공학부) ;
  • 이수봉 (인하대학교 전자전기공학부) ;
  • 장근철 (인하대학교 전자전기공학부)
  • Published : 2005.03.01
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Abstract

This paper describes the characteristics of effective impulse ground impedance of deeply driven ground rods combined with grounding grid or counterpoises with needles. The potential rises of the test ground electrodes were measured as a function of the rise time of applied impulse currents and the effective impulse ground impedances were calculated The impulse ground impedances of deeply driven ground rods strongly depend on the rise time of impulse currents and significantly reduced by the connection of grounding grids in parallel.

본 논문은 메쉬 접지전극이나 침부 매설지선이 연결된 심매설 봉상 접지전극의 실효임펄스접지임피던스의 특성을 다루었다. 시험용 접지전극의 전위상승은 인가된 임펄스 전류의 상승시간의 함수로 측정되었고, 실효임펄스접지 임피던스는 산출되었다. 심매설 봉상 접지전극의 임펄스접지임피던스는 임펄스 전류의 상승시간에 강하게 의존하며 메쉬 접지전각과의 병렬연결에 의해 확연히 감소하였다.

Keywords

References

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  1. Characteristics of Transient Grounding Impedances of Counterpoises Relevant to the Injected Point of Impulse Currents vol.24, pp.5, 2010, https://doi.org/10.5207/JIEIE.2010.24.5.062