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The single phase-to-ground fault is the most frequent accident in distribution network. In order to achieve detecting fault line, the wavelet packet decomposition method was used in this paper. The first step is to analyze the transient characteristics of fault line and the wavelet packet decomposition of transient ground capacitive current. Then the energy method is used to extract the feature band,...
Combination of wavelet packet theory and through deep analysis of distribution network single-phase ground short circuit transient process, a new line selection method which bases on wavelet packet feature band extraction and singularity analysis is proposed .The method of the line selection basic, principle as well as step are introduced. The simulation experiment indicates that this method improves...
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