A Fault Line Selection Method Based on CEEMDAN-ICA

Lei DU , Tianqi XU , Yan LI , Mengmeng ZHU , Zhaolei HE

›› 2022, Vol. 16 ›› Issue (6) : 54 -64.

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›› 2022, Vol. 16 ›› Issue (6) : 54 -64. DOI: 10.13648/j.cnki.issn1674-0629.2022.06.006
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A Fault Line Selection Method Based on CEEMDAN-ICA

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Abstract

Due to the increasing of cable-wire hybrid lines, the zero-sequence current waveform similarity between faulty lines and sound lines increases greatly, which makes fault line selection more difficult for nowadays power distribution networks. To solve these problems, a fault line selection method of complete ensemble empirical mode decomposition based on adaptive noise (CEEMDAN) and independent component analysis (ICA) is proposed. The zero-sequence current at the head end of each line is decomposed to obtain intrinsic mode functions (IMF) component, and then multi-dimensional source signal is constructed by ICA method. The fault signal is identified by kurtosis threshold criterion, then the zero-sequence current signals are reconstructed after setting the fault signal to zero, and the line with zero-variance of reconstructed zero-sequence signal is identified as fault line. Simulation results show that the proposed method is less affected by different fault conditions, of high reliability and strong anti-interference, and can be used for line selection for high resistance grounding multiple faults. Meanwhile, the “sort push-pull” strategy based on kurtosis value is proposed.

Keywords

distribution network / ICA / CEEMDAN / fault line selection / single-phase grounding fault

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Lei DU,Tianqi XU,Yan LI,Mengmeng ZHU,Zhaolei HE. A Fault Line Selection Method Based on CEEMDAN-ICA. 2022, 16(6): 54-64 DOI:10.13648/j.cnki.issn1674-0629.2022.06.006

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National Natural Science Foundation of China(62062068)

Scientific Research Foundation of Yunnan Education Department(2022Y457)

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