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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Improved Mesh Grounding Electrode Model by Changing Arrangements of Internal Conductors of the Mesh Grounding Electrode

메쉬접지극의 내부도체 배치에 따른 개선된 메쉬접지극 모델

  • 심용식 (홍익대학교 대학원 전기공학과) ;
  • 최홍규 (홍익대학교 전자.전기공학과, 전기설비연구센터) ;
  • 김태훈 (홍익대학교 대학원 전기공학과) ;
  • 송영주 (동신대학교)
  • Received : 2010.01.21
  • Accepted : 2010.04.22
  • Published : 2010.06.30
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Abstract

Mesh grounding electrodes in Korea and abroad are designed as lattice-shaped equidistance grounding grids. In case of a lattice-shaped grounding Grid, however, there is a problem of higher touch voltage at the corner of the grid relative to the center. To overcome this problem, we used oblique-shaped equidistance grounding grid to reduce the area of the corner where mesh voltage occurs. As a result the mesh voltage was reduced. Therefore, this paper suggests the use of oblique-shaped grounding grid instead of the existing lattice-shaped ones. It applied the same grounding design dimensions for both lattice-shaped and oblique-shaped grounding grids, compared and analyzed mesh voltage, GPR, ground resistance, total length of grounding conductor, verified that oblique-shaped grounding grid is superior to the lattice-shaped.

국내 외 메쉬접지극은 격자형태의 등간격 접지Grid로 설계하고 있다. 격자형 접지Grid의 경우 구석의 접촉전압이 중심 부분에 비해 높아지는 문제점이 있다. 이러한 문제점을 극복하기 위해 사선형태의 접지 Grid를 사용하면 메쉬전압이 발생하는 구석부분의 면적이 감소함으로써 메쉬전압이 감소한다. 따라서 본 논문에서는 기존의 격자형태의 접지Grid의 형태와 다르게 사선형태의 접지Grid를 제안하며, 격자형태의 접지Grid와 사선형태의 접지Grid로 설계된 메쉬접지극에 동일한 접지설계제원을 적용하고 메쉬전압, GPR, 접지저항, 접지도체의 총길이를 비교 검토하여 사선형태 접지Grid의 우수성을 검증하였다.

Keywords

References

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  1. Mesh Grounding Design Based on the Study of Dangerous Voltage on Limited Sites vol.25, pp.11, 2011, https://doi.org/10.5207/JIEIE.2011.25.11.091