NDLI: The method of power capacitor partial discharge signal extraction based on several algorithms fusion

Content Provider	IEEE Xplore Digital Library
Author	Huang Zhi-chao Yan Hong-yan Fan Xing-ming Yang Sheng-zhen Li Zhen Liang Cong
Copyright Year	2012
Description	Author affiliation: Guilin Power Capacitor Co., Ltd, Guilin, China, 541004 (Liang Cong) \|\| Dept. of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China (Huang Zhi-chao; Yan Hong-yan; Fan Xing-ming; Yang Sheng-zhen; Li Zhen)
Abstract	Partial discharge (PD) is the initial sign of power capacitor insulation failure, and an effective extraction and analysis method of PD signal in power capacitor can improve the effectiveness of the on-line fault monitoring. The method which based on wavelet threshold denoising and mathematical morphology alternate mixing filter is put forward in this paper. First, the PD signal which includes noise is wavelet decomposed with the proper wavelet function and scale, and each layer of wavelet coefficients is extracted. Then appropriate flat structure element is chosen aimed at the scales of wavelet coefficients, and the mathematical morphology alternate mixing filter is used to filter out the noise and get a new wavelet coefficients. Choosing the appropriate threshold rules for the new wavelet coefficients, the wavelet coefficients after the threshold treatment is wavelet reconstructed and the PD signal after denoising is got. The wave distortion mean square error eMSE and SNR are chosen as the indicators to analyze and compare the denoising effects of wavelet threshold denoising method and the fusion denoising method. The results show that the fusion method can effectively remove the noise and keep the original shape characteristic of the signal better.
Starting Page	137
Ending Page	140
File Size	352202
Page Count	4
File Format	PDF
ISBN	9781467312639
ISSN	10932941
e-ISBN	9781467312660
e-ISBN	9781467312653
DOI	10.1109/DEIV.2012.6412470
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-02
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Noise reduction Power capacitors Morphology Noise Wavelet coefficients fusion denoising power capacitor partial discharge (PD) wavelet transform mathematical morphology
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software

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