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

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of Small Current Interruption Performance for $SF_6$ Gas Circuit Breaker

$SF_6$ 가스차단기의 소전류 차단성능 해석

  • 김홍규 (한국전기연구원 신전력기기연구그룹) ;
  • 송기동 (한국전기연구원 신전력기기연구그룹) ;
  • 정진교 (한국전기연구원 신전력기기연구그룹) ;
  • 오연호 (한국전기연구원 신전력기기연구그룹) ;
  • 박경엽 (한국전기연구원 신전력기기연구그룹)
  • Published : 2006.10.01
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Abstract

To analyze the small current interruption performance for the gas circuit breakers, the gas density and electric field intensity should be calculated. In this paper, the FVFLIC method is used for the gas flow analysis and the FEM for the electric field analysis. Then, the dielectric withstanding voltage is evaluated by the empirical formulation or Streamer theory. By comparing the calculated dielectric strength with the test result, it is found that both methods show good prediction capability for the small current interruption performance. Especially, when both methods predict the same interrupting performance, the prediction is in accordance with the experimental result.

Keywords

References

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