Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Flashover Voltage of 800kV Class Composite Hollow Insulator for $SF_6$ Gas Insulated Switchgear (GIS)

800kV $SF_6$ 가스절연 개폐장치용 (GIS) 복합절연애자 (Composite Hollow Insulator)의 표면오손시 내전압특성

  • 이창용 (현대중공업(주) 기계전기연구소) ;
  • 윤자홍 (현대중공업(주) 신제품개발실) ;
  • 최병화 (현대중공업(주)신제품개발실) ;
  • 윤치영 (현대중공업(주) 신제품개발실) ;
  • 고경석 (현대중공업(주) 신제품개발실) ;
  • 반석걸 (한국전력공사) ;
  • 허종철 (전기연구원)
  • Published : 2002.07.10
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Abstract

A developed 800kV class composite hollow insulator for $SF_6$ Gas Insulated Switchgear (GIS) was tested as to insulation with their surfaces contaminated. The wet power frequency withstand voltage of the silicone rubber housing was about 135kV at an equivalent salt deposite density of $5kg/m^2$, to sufficiently satisfy the required performance. According to IEC 60507, the salt fog withstand voltage was measured at 565kV, and the highest measured leakage current was below 0.2mA. Therefore, it was clarified that the composite hollow insulator has sufficient insulation performance even when it is contaminated on the surface.

Keywords