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Entropy 2016, 18(9), 322; doi:10.3390/e18090322

Mechanical Fault Diagnosis of High Voltage Circuit Breakers with Unknown Fault Type Using Hybrid Classifier Based on LMD and Time Segmentation Energy Entropy

1
School of Electrical Engineering, Northeast Dianli University, Jilin 132012, China
2
Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Academic Editors: Badong Chen and Jose C. Principe
Received: 13 June 2016 / Revised: 22 August 2016 / Accepted: 30 August 2016 / Published: 3 September 2016
(This article belongs to the Special Issue Information Theoretic Learning)
View Full-Text   |   Download PDF [2996 KB, uploaded 3 September 2016]   |  

Abstract

In order to improve the identification accuracy of the high voltage circuit breakers’ (HVCBs) mechanical fault types without training samples, a novel mechanical fault diagnosis method of HVCBs using a hybrid classifier constructed with Support Vector Data Description (SVDD) and fuzzy c-means (FCM) clustering method based on Local Mean Decomposition (LMD) and time segmentation energy entropy (TSEE) is proposed. Firstly, LMD is used to decompose nonlinear and non-stationary vibration signals of HVCBs into a series of product functions (PFs). Secondly, TSEE is chosen as feature vectors with the superiority of energy entropy and characteristics of time-delay faults of HVCBs. Then, SVDD trained with normal samples is applied to judge mechanical faults of HVCBs. If the mechanical fault is confirmed, the new fault sample and all known fault samples are clustered by FCM with the cluster number of known fault types. Finally, another SVDD trained by the specific fault samples is used to judge whether the fault sample belongs to an unknown type or not. The results of experiments carried on a real SF6 HVCB validate that the proposed fault-detection method is effective for the known faults with training samples and unknown faults without training samples. View Full-Text
Keywords: high voltage circuit breakers; mechanical fault diagnosis; local mean decomposition; time segmentation energy entropy; support vector data description; fuzzy c-means high voltage circuit breakers; mechanical fault diagnosis; local mean decomposition; time segmentation energy entropy; support vector data description; fuzzy c-means
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Huang, N.; Fang, L.; Cai, G.; Xu, D.; Chen, H.; Nie, Y. Mechanical Fault Diagnosis of High Voltage Circuit Breakers with Unknown Fault Type Using Hybrid Classifier Based on LMD and Time Segmentation Energy Entropy. Entropy 2016, 18, 322.

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