Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (9): 60-64.doi: 10.16180/j.cnki.issn1007-7820.2019.09.013

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Simulation Research on Fault Location of Underground Cable Based on Wavelet Analysis

TANG Yang,LI Junhao,XIONG Shuangju,XIE Shiyu,WANG Jinfeng   

  1. School of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China
  • Received:2018-09-23 Online:2019-09-15 Published:2019-09-19
  • Supported by:
    Research Project of China Three Gorges University(1317091)


Aiming at the difficulty of pulse signal recognition in power cable traveling wave fault location, the method of wavelet analysis was applied to the identification of traveling wave signals in power cables was proposed. PSCAD/EMTDC software was used to build an accurate simulation model, and the Daubechies wavelet in MATLAB was utilized to perform 5-layer wavelet decomposition on the simulated waveform. The simulation results showed that the wavelet analysis could be used to analyze the fault signal with full frequency range, which significantly improved the fault location accuracy of the cable. In a certain distance range, the relative error could be effectively controlled below 0.5%.

Key words: power cable, traveling wave, wavelet analysis, PSCAD/EMTDC, fault location, full frequency band

CLC Number: 

  • TP806