Transactions of China Electrotechnical Society  2017, Vol. 32 Issue (7): 20-30    DOI:
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Diagnosis on the Switching Fault of Conventional Circuit Breaker Based on Vibration Signal Sample Entropy and RVM
Sun Shuguang1,Yu Han1,Du Taihang1,Wang Jingqin2,Zhao Liyuan1
1.School of Control Science and Engineering Hebei University of Technology Tianjin 300130 China
2.Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China

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Abstract  In order to realize the non-invasive monitoring and diagnosis of switching fault for conventional circuit breaker, a method that combines complementary ensemble empirical mode decomposition (CEEMD)-sample entropy and relevance vector machine (RVM) is proposed for fault diagnosis by using vibration signals during the switching process. Firstly, the vibration signal is denoised by improved threshold wavelet packet denoising algorithm. Secondly, several intrinsic mode function (IMF) components which reflect main state information are extracted by CEEMD, and the top seven based on energy distribution characteristic are chosen to calculate the sample entropy as the effective feature sample. Finally, the euclidean distance of different fault samples is calculated to evaluate average sample distance between classes. The binary tree classifier based on RVM is established to diagnose the fault type. By results of contrast experiments based on designed typical switching fault models, the method realizes the conventional circuit breaker fault type identification accurately with relatively less fault data samples. And the experiments also show that it can realize the preliminary evaluation of three-phase non-synchronous fault degree based on the euclidean distance of fault samples.
Key wordsConventional circuit breaker      switching fault diagnosis      vibration signal      complementary ensemble empirical mode decomposition (CEEMD)      sample entropy      relevance vector machine     
Received: 28 December 2015      Published: 17 April 2017
PACS: TM561  
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Sun Shuguang
Yu Han
Du Taihang
Wang Jingqin
Zhao Liyuan
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Sun Shuguang,Yu Han,Du Taihang等. Diagnosis on the Switching Fault of Conventional Circuit Breaker Based on Vibration Signal Sample Entropy and RVM[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 20-30.
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