Monofractal and Multifractal Analysis of Discharge Signals in Transformer Pressboards

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dc.authorid0000-0002-8113-0514en_US
dc.contributor.authorCekli, Serap
dc.contributor.authorUzunoglu, Cengiz Polat
dc.contributor.authorUgur, Mukden
dc.date.accessioned2024-07-12T21:44:24Z
dc.date.available2024-07-12T21:44:24Z
dc.date.issued2018en_US
dc.departmentMaltepe Üniversitesien_US
dc.description.abstractPressboards are commonly used as insulating materials employed in electrical connections of transformers. Pressboards are typically made from vegetable fibers, which contain cellulose. The proper operation of power transformer depends mainly on constant monitoring of insulation materials against failure. Due to the complex and close structure of power transformers, it is very challenging task to detect failure and hence possible location of degradation of pressboard internally. Generated discharge signals may result in breakdown of system insulation and system failure. In this study, the investigation of insulation degradation is fulfilled by analyzing discharge signals and simultaneously produced acoustic signals during discharges. For this purpose, a test setup is used for investigating discharge signals of pressboard samples under different electrical stresses. This paper proposes monofractal and multifractal analysis of discharge and acoustic signals of pressboards. The Higuchi's method is an effective monofractal analysis tool for measurement of fractal dimension of self-affine signals, which is proposed for online monitoring of discharge signals of pressboards. In order to investigate obtained discharge signals with accelerated fluctuations effectively, multifractal detrended fluctuation analysis is proposed for these signals, which exhibit nonlinear behavior.en_US
dc.identifier.doi10.4316/AECE.2018.02009
dc.identifier.endpage76en_US
dc.identifier.issn1582-7445
dc.identifier.issn1844-7600
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85047883421en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage69en_US
dc.identifier.urihttps://dx.doi.org/10.4316/AECE.2018.02009
dc.identifier.urihttps://hdl.handle.net/20.500.12415/7721
dc.identifier.volume18en_US
dc.identifier.wosWOS:000434245000009en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherUNIV SUCEAVA, FAC ELECTRICAL ENGen_US
dc.relation.ispartofADVANCES IN ELECTRICAL AND COMPUTER ENGINEERINGen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmzKY00104
dc.subjectpartial dischargesen_US
dc.subjectpower transformersen_US
dc.subjectfractalsen_US
dc.subjectacoustic sensorsen_US
dc.subjectpower qualityen_US
dc.titleMonofractal and Multifractal Analysis of Discharge Signals in Transformer Pressboardsen_US
dc.typeArticle
dspace.entity.typePublication

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