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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Research on Comparison of Individual and Connecting Grounding Electrode for Potential Rise Distribution

개별 접지전극과 연접된 접지전극의 전위상승 분포 비교 연구

  • 길형준 (한국전기안전공사 전기안전연구원) ;
  • 최충석 (한국전기안전공사 전기안전연구원) ;
  • 이복희 (인하대 공대 전자전기컴퓨터공학부)
  • Published : 2008.02.29
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Abstract

This paper deals with a comparison of individual and connecting grounding electrode for potential rise. When a test current flowed through grounding electrode, potential rise was measured and analyzed for grounding method using a electrolytic tank in real time. In order to analyze the potential rise of grounding systems, a hemispherical water tank experimental apparatus was studied. Potential rise was measured and analyzed regarding the grounding method and distance by using this apparatus. The apparatus was composed of a hemispherical water tank, AC power supply, a movable potentiometer, and test grounding electrodes. The potential rise was measured by the horizontal moving probe of the potentiometer. The grounding electrodes were designed and fabricated with ground rods on a scale of one-eightieth. Potential rises of individual grounding electrode were higher than those of connecting grounding electrode. The distributions of surface potential are dependent on the distance from grounding electrode.

본 논문에서는 전위상승에 대한 개별 접지전극과 연접된 접지전극의 비교를 다루었으며, 시험전류가 접지전극에 흐를 때 실시간으로 접지방식에 대한 전위상승이 측정 및 분석되었다. 접지시스템의 전위상승을 분석하기 위해 반구형 수조실험장치가 사용되었고, 이를 이용하여 접지방식 및 거리에 따라 전위상승이 측정되었다. 실험장치는 반구형 수조, 전원공급장치, 이송형 전위계측장치, 시험 접지전극으로 구성되었고 전위계측장치의 프로브가 수평방향으로 이송함에 따라 전위상승이 측정되었고, 접지전극으로는 80 : 1 축척의 봉형 접지전극을 사용하였다. 개별 접지전극의 전위상승이 연접된 접지전극보다 높게 나타났으며 전위분포는 접지전극으로부터의 거리에 의존하는 특성을 나타내었다.

Keywords

References

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  1. Investigation on the Spot for Grounding Systems in Buildings vol.24, pp.3, 2010, https://doi.org/10.5207/JIEIE.2010.24.3.039