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A New Adaptive Fault Line Selection Method Based on Multi-scale Wavelet Packet Decomposition in Non-solid Earthed Network

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3 Author(s)
Zhenglin Liang ; Sch. of Electr. & Electron. Eng., Manchester Univ., Manchester, UK ; Feng Zhang ; Jun Liang

The characteristic of single-phase grounding fault and the signal of optimal high frequency region is analyzed in this paper. A new adaptive fault line selection method based on multi-scale wavelet packet decomposition is proposed. Wavelet packet decomposition has excellent focusing property in time-frequency space, besides the method uses multi-scale wavelet packet decomposition rather than fixed scale, so the method can improve the robustness of the fault line algorithm easily. The simulation results show the high accuracy and credibility.

Published in:

2010 Asia-Pacific Power and Energy Engineering Conference

Date of Conference:

28-31 March 2010