Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition

In order to solve the problem that the fault line cannot be accurately identified after single-phase grounding fault occurs in power grid,an intelligent sensing method of residual current grounding fault based on wavelet packet decomposition was proposed.Based on wavelet analysis and intelligent sen...

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Autores principales:	Bingyu LI, Xuhao DU, Junjie MIAO, Haobin WANG, Yanqiang MA, Zheng LI
Formato:	article
Lenguaje:	ZH
Publicado:	Hebei University of Science and Technology 2021
Materias:	electric energy; residual current; wavelet analysis; ground fault; intelligent perception; fault line selection Technology T
Acceso en línea:	https://doaj.org/article/ceace0c146f34d549918063a1caf85cb
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spelling	oai:doaj.org-article:ceace0c146f34d549918063a1caf85cb2021-11-23T07:08:47ZResidual current grounding fault intelligent sensing technology based on wavelet packet decomposition1008-154210.7535/hbkd.2021yx03007https://doaj.org/article/ceace0c146f34d549918063a1caf85cb2021-06-01T00:00:00Zhttp://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b202103007&flag=1&journal_https://doaj.org/toc/1008-1542In order to solve the problem that the fault line cannot be accurately identified after single-phase grounding fault occurs in power grid,an intelligent sensing method of residual current grounding fault based on wavelet packet decomposition was proposed.Based on wavelet analysis and intelligent sensing principle,the residual current generated by grounding fault was collected,and the collected residual current information was analyzed and compared to sense the grounding fault and identify the fault.By researching on-line monitoring of residual current of AC power supply and arc grounding fault diagnosis technology which is based on wavelet transform,the time-frequency characteristics of current obtained by wavelet packet decomposition were used for fault line selection;the fault line selection method based on the proposed wavelet packet decomposition was simulated.The results show that the time-frequency information can be extracted accurately and the fault line can be determined effectively by using the method,and the fault line can be accurately identified with the difference of current characteristics between fault line and normal line.The research result provides a reference for the design of intelligent sensing system of AC power grounding fault.Bingyu LIXuhao DUJunjie MIAOHaobin WANGYanqiang MAZheng LIHebei University of Science and Technologyarticleelectric energy; residual current; wavelet analysis; ground fault; intelligent perception; fault line selectionTechnologyTZHJournal of Hebei University of Science and Technology, Vol 42, Iss 3, Pp 257-264 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	electric energy; residual current; wavelet analysis; ground fault; intelligent perception; fault line selection Technology T
spellingShingle	electric energy; residual current; wavelet analysis; ground fault; intelligent perception; fault line selection Technology T Bingyu LI Xuhao DU Junjie MIAO Haobin WANG Yanqiang MA Zheng LI Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
description	In order to solve the problem that the fault line cannot be accurately identified after single-phase grounding fault occurs in power grid,an intelligent sensing method of residual current grounding fault based on wavelet packet decomposition was proposed.Based on wavelet analysis and intelligent sensing principle,the residual current generated by grounding fault was collected,and the collected residual current information was analyzed and compared to sense the grounding fault and identify the fault.By researching on-line monitoring of residual current of AC power supply and arc grounding fault diagnosis technology which is based on wavelet transform,the time-frequency characteristics of current obtained by wavelet packet decomposition were used for fault line selection;the fault line selection method based on the proposed wavelet packet decomposition was simulated.The results show that the time-frequency information can be extracted accurately and the fault line can be determined effectively by using the method,and the fault line can be accurately identified with the difference of current characteristics between fault line and normal line.The research result provides a reference for the design of intelligent sensing system of AC power grounding fault.
format	article
author	Bingyu LI Xuhao DU Junjie MIAO Haobin WANG Yanqiang MA Zheng LI
author_facet	Bingyu LI Xuhao DU Junjie MIAO Haobin WANG Yanqiang MA Zheng LI
author_sort	Bingyu LI
title	Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
title_short	Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
title_full	Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
title_fullStr	Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
title_full_unstemmed	Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
title_sort	residual current grounding fault intelligent sensing technology based on wavelet packet decomposition
publisher	Hebei University of Science and Technology
publishDate	2021
url	https://doaj.org/article/ceace0c146f34d549918063a1caf85cb
work_keys_str_mv	AT bingyuli residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition AT xuhaodu residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition AT junjiemiao residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition AT haobinwang residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition AT yanqiangma residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition AT zhengli residualcurrentgroundingfaultintelligentsensingtechnologybasedonwaveletpacketdecomposition
_version_	1718416910572322816

Residual current grounding fault intelligent sensing technology based on wavelet packet decomposition

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