Identification of simultaneous fault types in electrical power system using the comparisons technique of DWT coefficients

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dc.contributor.authorNgaopitakkul, A.
dc.contributor.authorApisit, C.
dc.contributor.authorJettanasen, C.
dc.contributor.authorPothisarn, C.
dc.date.accessioned2026-08-06T10:02:06Z
dc.date.available2026-08-06T10:02:06Z
dc.date.issued2011-04-01
dc.description.abstractThis paper is aimed to propose a novel distance relay algorithm, which includes the effect of simultaneous fault. The previous research paper can give an uncertain result in a fault classification during simultaneous faults. In order to overcome this problem, the comparison of coefficients of discrete wavelet transform (DWT) has been developed. The fault analysis is performed using PSCAD/EMTDC. The current waveforms obtained from PSCAD/EMTDC are extracted to several scales with the wavelet transform, and the coefficients of the first scale from the wavelet transform are investigated. The coefficient details of DWT at the first peak time that positive sequence current can detect fault, are performed as comparison indicator in order to classify fault types. It is found that the technique proposed in this paper gives satisfactory results in the simultaneous fault classification. © 2011 ISSN 2185-2766.
dc.identifier.citationIcic Express Letters Part B Applications, 2(2), 377-382, 2011
dc.identifier.issn21852766
dc.identifier.other2-s2.0-79952367023
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/3572
dc.sourceIcic Express Letters Part B Applications
dc.subjectFault types
dc.subjectSimultaneous fault
dc.subjectTransmission system
dc.subjectWavelet transform
dc.titleIdentification of simultaneous fault types in electrical power system using the comparisons technique of DWT coefficients
dc.typeArticle

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