Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Precursor Discharge Mechanism under EHV in $SF_6$ Gas

초고압 $SF_6$가스중의 선구방전기구

  • 이형호 (한국전기연구소 전력기기연구부) ;
  • ;
  • Published : 1996.07.22
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Abstract

The axial discharge at switching operations of EHV $SF_6$ disconnector can lead to the breakdown to the enclosure. Precursor in periphery zone leads to formation of leader over some time delay. Injected charge value depends on electric field and gap geometry. The calculation method for parameters of $SF_6$ insulation for DS in EHV-GIS is suggested by using the new criterion of leader inception in connection with periphery field nearby the boundary of streamer zone.

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