The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Dielectric Strength in Section of Winding in SF6 Gas Transformer

$SF_6$ 가스절연변압기에서 권선의 섹션에 대한 절연내력 연구

  • 허우행 ((주)효성 중공업연구소 창원분소) ;
  • 하영식 ((주)효성 중공업연구소 창원분소) ;
  • 홍정표 (창원대 공대 전기공학과) ;
  • 김규탁 (창원대 공대 전기공학과)
  • Published : 2000.03.01
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Abstract

This paper deal with the experimental discussion about the impulse and AC dielectric strength of SF6 gas insulated transformer. Test sample is measured the dielectric breakdown voltage about modeling of the first and second section which is the weakest for surge voltage. The AC breakdown voltage is appeared 1.4 times than impulse breakdown voltage, so we can estimate that the impulse breakdown voltage is severe to AC breakdown voltage, and when the impulse is applied, in case of lmm tapping with Nomex paper, the characteristics of dielectric breakdown voltage is same to that in oil immersed transformer when SF6 gas pressure is 2.2kg/$cm^2$G.

Keywords

References

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