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| Studying the dielectric recovery characteristics from interaction of electric field and gas flow field in high voltage circuit breakers (HV CBs), a two dimensional coupling physical-mathematical model was developed. Such a quantitative analysis has not been reported until now for HV SF6 CB because of the complexity of the dynamic interrupting course. And the influence of shock wave and turbulent flow has been taken into consideration for the computation of gas flow field. To realize the dynamic simulation of the coupling field, this paper describes the automatic generation method of self-adaptive meshing grid for electric field computation and slippage meshing grid for gas flow field computation, and the implement course. Thus, the numerical experiment of the interrupting course of CB has been performed and discussed. |
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| Keywords:circuit breaker, electric field, flow field, SF6. |
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