TY - GEN
T1 - Medium voltage cable partial discharge signals denoising by second generation wavelet packet transform
AU - Tang, Ming
AU - Li, Hongjie
AU - Liu, Xiang
AU - Liang, Deliang
PY - 2013
Y1 - 2013
N2 - On-line partial discharge (PD) measurements taken from distribution cable network are corrupted by noise due to electromagnetic interference. This paper presents application of Second Generation Wavelet Packet Transform (SGWPT), as an improved algorithm of Second Generation Wavelet Transform (SGWT), to extraction of PD pulse from background noise. Firstly, the SGWPT is constructed on the basis of SGWT. Secondly, comparative study of the Shannon entropy and threshold entropy criterion to select the best tree is conducted, and the investigation results show that threshold entropy criterion yields better signal-to-noise ratio (SNR). Finally, the algorithm is applied to PD signals corrupted by white noise. Results confirm that SGWPT can improve the effectiveness of PD de-noising.
AB - On-line partial discharge (PD) measurements taken from distribution cable network are corrupted by noise due to electromagnetic interference. This paper presents application of Second Generation Wavelet Packet Transform (SGWPT), as an improved algorithm of Second Generation Wavelet Transform (SGWT), to extraction of PD pulse from background noise. Firstly, the SGWPT is constructed on the basis of SGWT. Secondly, comparative study of the Shannon entropy and threshold entropy criterion to select the best tree is conducted, and the investigation results show that threshold entropy criterion yields better signal-to-noise ratio (SNR). Finally, the algorithm is applied to PD signals corrupted by white noise. Results confirm that SGWPT can improve the effectiveness of PD de-noising.
KW - distribution cable network
KW - entropy criterion
KW - partial discharge
KW - signal-to-noise ratio
KW - wavelet packets
UR - https://www.scopus.com/pages/publications/84894217366
U2 - 10.1109/ICInfA.2013.6720459
DO - 10.1109/ICInfA.2013.6720459
M3 - 会议稿件
AN - SCOPUS:84894217366
SN - 9781479913343
T3 - 2013 IEEE International Conference on Information and Automation, ICIA 2013
SP - 1097
EP - 1102
BT - 2013 IEEE International Conference on Information and Automation, ICIA 2013
T2 - 2013 IEEE International Conference on Information and Automation, ICIA 2013
Y2 - 26 August 2013 through 28 August 2013
ER -