Abstract
In order to improve the recognition rate of mechanical vibration signals of high voltage circuit breakers, a feasible new fault diagnosis method is proposed in this paper. Firstly, the empirical wavelet transform (EWT) is adopted to decompose the original multi-component signals into a series of intrinsic mode functions (IMF). Secondly, the envelop energy entropies of these IMF components are calculated as signal features. Finally, establishing the optimal support vector machine (SVM) classifier by particle swarm optimization (PSO) method. Using this EWT-PSO-SVM model to identify the unknown samples, the results show that the EWT method can effectively reduce modal aliasing problem, and the recognition rate of EWT-PSO-SVM model is higher than EMD-PSO-SVM model, these results verify the feasibility and superiority of the proposed EWT-PSO-SVM fault diagnosis method.
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Acknowledgement
This work is supported by natural science foundation of Heilongjiang province of China (No. E201233), science and technology innovation research team in higher educational institutions of Heilongjiang province (No. 2012TD007), Graduate Innovation Research Project of Heilongjiang University (No. YJSCX2018-052HLJU).
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Li, B., Liu, M., Guo, Z., Ji, Y. (2020). Application of EWT and PSO-SVM in Fault Diagnosis of HV Circuit Breakers. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 517. Springer, Singapore. https://doi.org/10.1007/978-981-13-6508-9_76
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DOI: https://doi.org/10.1007/978-981-13-6508-9_76
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