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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Analysis of Medium Effect by Gas Pressure and Gap at Surface Discharge of Dry Air

건조공기의 연면방전에서 가스압력과 극간거리에 따른 매질효과분석

  • 임동영 (영남대학교 전기공학과) ;
  • 민경준 (영남대학교 대학원 전기공학과) ;
  • 박혜리 (프랑스 Ecole Normale superieure de Cachan) ;
  • 최은혁 (한국폴리텍VI대학 대구캠퍼스 스마트전기과) ;
  • 최상태 (경주대학교 전기에너지전자공학과) ;
  • 배성우 (영남대학교 전기공학과) ;
  • 이상봉 (영남대학교 전기공학과) ;
  • 박원주 (영남대학교 전기공학과) ;
  • 이광식 (영남대학교 전기공학과)
  • Received : 2013.08.07
  • Accepted : 2013.09.04
  • Published : 2013.10.31
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Abstract

In studies on an alternative insulating gas of $SF_6$ gas, the section of the alternative gas and an insulation technique to improve its low dielectric strength have been reported, but very few attempts have been made at the dependence of a gas pressure and a gap as well as the medium effect in the alternative gas. The purpose of this paper is to analyze the dependence of the gas pressure and the gap at surface flashover voltage in dry air. The dependence is analyzed based on the medium effect. The medium effect by the gas pressure and the gap can be explained by surface roughness of a solid dielectric and an electrode as well as an electric field which decreases due to the correlation between the collision ionization coefficient and the gap, respectively. In addition, an insulation technique which can fabricate a compact eco-friendly gas insulated switchgear is proposed by the results of this paper.

Keywords

References

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