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A method of fault line selection was proposed based on fault grounded point transfer and wavelet transform in small-current neutral grounding system in this paper. Phase-separation vacuum circuit breaker was installed in the busbar and realize fault grounded point transfer through vacuum breaker of fault phase when single-phase-to-ground fault occurs. Thus zero-sequence current of fault line will...
Analysis of the existing methods for fault line selection and the characteristics of zero-sequence transient current in small current grounding system, a novel fault line selection method based on grey relation analysis is proposed. The difference between fault line and normal lines is distinguished by the relation degree of the zero-sequence transient current of fault line and normal lines'. Besides,...
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