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

  • 제22권2호
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  • Pages.57-62
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  • 2008
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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개별 접지전극과 연접된 접지전극의 전위상승 분포 비교 연구

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

  • 길형준 (한국전기안전공사 전기안전연구원) ;
  • 최충석 (한국전기안전공사 전기안전연구원) ;
  • 이복희 (인하대 공대 전자전기컴퓨터공학부)
  • 발행 : 2008.02.29
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초록

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.

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.

키워드

참고문헌

  1. Bok-Hee Lee, 'Research for Solving the Potential Interference of the Individual․Isolation Grounding Method in Grounding System', Korea Electrical Contractors Association, pp.5-25, 2005
  2. Bok-Hee Lee, 'Protection of Information and Communication Facilities against Lightning', Inha University Publishing Department, pp.197-221, 2004
  3. Hyoung-Jun Gil, Chung-Seog Choi, Bok-Hee Lee, 'The Analysis of Ground Potential Rise for Shapes of Grounding Electrode Using Hemispherical Grounding Simulation System', The Korean Institute of Electrical Engineers, Vol. 54C, No. 7, pp.319-325, 2005
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  5. Chung-Seog Choi, Hyang-Kon Kim, Hyoung-Jun Gil, Woon-Ki Han, Ki-Yeon Lee, 'The Potential Gradient of Ground Surface according to Shapes of Mesh Grid Grounding Electrode Using Reduced Scale Model', IEEJ Trans. PE, Vol. 125, No. 12, pp.1170-1176, 2005 https://doi.org/10.1541/ieejpes.125.1170
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피인용 문헌

  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