The Impact of Transmission Line Modeling on Lightning Overvoltage

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dc.contributor.authorLeon Colqui, Jaimis Sajid
dc.contributor.authorRibeiro de Moura, Rodolfo Antônio
dc.contributor.authorDe Oliveira Schroeder, Marco Aurélio
dc.contributor.authorFilho, José Pissolato
dc.contributor.authorKurokawa, Sérgio [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:05:31Z
dc.date.available2023-07-29T16:05:31Z
dc.date.issued2023-02-01
dc.description.abstractIn most of the work that investigates the backflashover phenomenon due to direct lightning strikes, using EMT-type simulators, transmission lines are represented by the J. Marti model and the ground effect is computed employing J. R. Carson’s formulations. Thus, the ground displacement current is neglected, the line voltage definition corresponds to the wire potential formulation, and soil resistivity is considered frequency-independent. These considerations can lead to erroneous measurements of the occurrences of the backflashover phenomenon in the insulator strings of transmission line. In this sense, this paper presents a systematic sensitivity analysis study of lightning overvoltage in insulator strings considering more physically consistent models of the transmission line, which consider the displacement current, ground admittance correction, rigorous voltage definition, and frequency-dependent soil parameters. According to the results, for the case study, transmission line parameters modeling can present a maximum percentual difference of around 71.54%, considering the frequency range of first strokes. This difference leads to a percent difference of around 5.25% in the maximum overvoltage across the insulator strings. These differences confirm that the occurrence or not of backflashover in the insulator strings, including the disruption time, are sensitive to the line model considered.en
dc.description.affiliationSchool of Electrical and Computer Engineering State University of Campinas—UNICAMP
dc.description.affiliationElectrical Engineering Department Federal University of São João del-Rei—UFSJ
dc.description.affiliationDepartment of Electrical Engineering São Paulo State University—UNESP
dc.description.affiliationUnespDepartment of Electrical Engineering São Paulo State University—UNESP
dc.identifierhttp://dx.doi.org/10.3390/en16031343
dc.identifier.citationEnergies, v. 16, n. 3, 2023.
dc.identifier.doi10.3390/en16031343
dc.identifier.issn1996-1073
dc.identifier.scopus2-s2.0-85147941818
dc.identifier.urihttp://hdl.handle.net/11449/249650
dc.language.isoeng
dc.relation.ispartofEnergies
dc.sourceScopus
dc.subjectEMT-type simulators
dc.subjectfrequency-dependent soil parameters
dc.subjectlightning overvoltages
dc.subjecttransmission line modeling
dc.titleThe Impact of Transmission Line Modeling on Lightning Overvoltageen
dc.typeArtigo
unesp.author.orcid0000-0001-5095-7298[1]
unesp.author.orcid0000-0001-8193-5374[2]
unesp.author.orcid0000-0002-4606-7249[3]
unesp.author.orcid0000-0002-7932-3974[4]
unesp.author.orcid0000-0002-9263-980X[5]
unesp.departmentEngenharia Elétrica - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia