2013 2nd International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) 2013
DOI: 10.1109/icepe-st.2013.6804302
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Influence of fault parameters on breaking performance of vacuum circuit breaker

Abstract: In order to analyze the influence of power system fault parameters on the breaking performance of vacuum circuit breaker (VCB), a black box model of VCB based on the diffuse vacuum arc interruption has been established in this paper. Taking the current zero as the demarcation point, arc voltage is modeled during the arcing period and post arc current (PAC) is modeled based on the theory of Langmuir probes during the post arc period. Based on this model, the equivalent discount factor of the breaking capability… Show more

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