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 Cold Gas Flow in Puffer Type GCB Considering the Real Gas Property of $SF_6$

$SF_6$ 가스의 실제 기체특성을 고려한 파퍼식 가스차단기 내의 냉가스 유동해석

  • 김홍규 (한국전기연구원 신전력기기연구그룹) ;
  • 정진교 (한국전기연구원 신전력기기연구그룹) ;
  • 박경엽 (한국전기연구원 신전력기기연구그룹)
  • Published : 2004.03.01
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Abstract

To analyze the performance of the gas circuit breaker(GCB), the flow field variables such as temperature, pressure and density should be evaluated accurately In the puffer chamber of puffer type GCB, the pressure rise may Exceed 20 bar and in this range of high pressure, $SF_6$ gas deviates the ideal gas property. Therefore, the real gas property of $SF_6$ should be taken into consideration for the accurate analysis of flow field. This paper presents the analysis technique of cold gas flow in GCB employing the real gas state equation of SF6. The FVFLIC method is Employed to solve the axisymmetric Euler equation. To reduce the computational effort of real gas state equation, the relationship between density and pressure is approximated by the polynomial at the temperature of 300K. The proposed method is applied to the test GCB model and simulation results show good agreement with the experimental ones.

Keywords

References

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