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

김홍규 (한국전기연구원 신전력기기연구그룹)
정진교 (한국전기연구원 신전력기기연구그룹)
박경엽 (한국전기연구원 신전력기기연구그룹)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.53, no.3, 2004 , pp. 129-134 More about this Journal
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
Puffer GCB; $SF_6$ gas; real gas property; state equation; FVFLIC method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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