General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion

General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion

For selective detection of earth faults in medium voltage networks, the general protection can be used, which unlike individual protections controls earth currents in all lines supplied from the substation. To detect high-resistance and arc faults, it is possible to use in such protections the detai...

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Main Author: Marciniak Lubomir
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/10/e3sconf_pe2019_02007.pdf
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spelling doaj-75f5ea80744f4ae6a67743715ae067ed2021-02-02T06:43:52ZengEDP SciencesE3S Web of Conferences2267-12422019-01-01840200710.1051/e3sconf/20198402007e3sconf_pe2019_02007General earth fault protection for MV networks using wavelet decomposition and Bayesian criterionMarciniak Lubomir0Institute of Electric Power Engineering, Technical University of CzestochowaFor selective detection of earth faults in medium voltage networks, the general protection can be used, which unlike individual protections controls earth currents in all lines supplied from the substation. To detect high-resistance and arc faults, it is possible to use in such protections the details from wavelet decomposition of earth currents and the Bayesian conditional probability criterion. The paper presents a protection model using details of earth currents and the Bayesian criterion. Significant parameters of the model were determined: sampling frequency, wavelet types and decomposition levels, parameters of the probability density function and decision conditions. The effectiveness of the protection in the case of non-stationary high-resistance short-circuits in the network with natural asymmetry and harmonic distortion was also assessed.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/10/e3sconf_pe2019_02007.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Marciniak Lubomir
spellingShingle Marciniak Lubomir
General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
E3S Web of Conferences
author_facet Marciniak Lubomir
author_sort Marciniak Lubomir
title General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
title_short General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
title_full General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
title_fullStr General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
title_full_unstemmed General earth fault protection for MV networks using wavelet decomposition and Bayesian criterion
title_sort general earth fault protection for mv networks using wavelet decomposition and bayesian criterion
publisher EDP Sciences
series E3S Web of Conferences
issn 2267-1242
publishDate 2019-01-01
description For selective detection of earth faults in medium voltage networks, the general protection can be used, which unlike individual protections controls earth currents in all lines supplied from the substation. To detect high-resistance and arc faults, it is possible to use in such protections the details from wavelet decomposition of earth currents and the Bayesian conditional probability criterion. The paper presents a protection model using details of earth currents and the Bayesian criterion. Significant parameters of the model were determined: sampling frequency, wavelet types and decomposition levels, parameters of the probability density function and decision conditions. The effectiveness of the protection in the case of non-stationary high-resistance short-circuits in the network with natural asymmetry and harmonic distortion was also assessed.
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/10/e3sconf_pe2019_02007.pdf
work_keys_str_mv AT marciniaklubomir generalearthfaultprotectionformvnetworksusingwaveletdecompositionandbayesiancriterion
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