Medium voltage cable partial discharge signals denoising by second generation wavelet packet transform

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publication2013 IEEE International Conference on Information and Automation, ICIA 2013
Pages1097-1102
Number of pages6
DOIs
StatePublished - 2013
Event2013 IEEE International Conference on Information and Automation, ICIA 2013 - Yinchuan, China
Duration: 26 Aug 201328 Aug 2013

Publication series

Name2013 IEEE International Conference on Information and Automation, ICIA 2013

Conference

Conference2013 IEEE International Conference on Information and Automation, ICIA 2013
Country/TerritoryChina
CityYinchuan
Period26/08/1328/08/13

Keywords

  • distribution cable network
  • entropy criterion
  • partial discharge
  • signal-to-noise ratio
  • wavelet packets

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