Hunan Electric Power ›› 2024, Vol. 44 ›› Issue (5): 124-130.doi: 10.3969/j.issn.1008-0198.2024.05.019

• Faults and Analysis • Previous Articles     Next Articles

Mechanical Failure Diagnosis Method for High-Voltage Circuit Breakers Based on Vibration Signal Analysis

MA Zhaoxing1, LIU Jinxin1, LI Ji1, WANG Jing1, CHEN Hao2, JI Haomin2, WANG Ruihua1   

  1. 1. School of Information and Control Engineering,Qingdao University of Technology, Qingdao 266520, China;
    2. State Grid Jiangsu Electric Power Co., Ltd. Nanjing Power Supply Branch Company,Nanjing 210019,China
  • Received:2024-05-10 Revised:2024-06-19 Online:2024-10-25 Published:2024-11-06

Abstract: By analyzing the vibration signals of high voltage circuit breakers(HVCB), fault types can be identified based on their different vibration characteristics. Using an improved wavelet threshold denoising method for data preprocessing of circuit breaker vibration signals, and extracting the energy proportion of each frequency band through wavelet packet transform, HVCB fault diagnosis is achieved based on the analysis of energy distribution characteristics. Engineering examples show that the method proposed in this paper can effectively achieve mechanical fault diagnosis of HVCB, providing a new technological means for intelligent operation and inspection of high-voltage circuit breakers.

Key words: high-voltage circuit breaker(HVCB), vibration signal, wavelet transform, energy extraction, intelligent maintenance

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