An analysis of frequency-dependent soil models: Influence on the transient responses

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorPascoalato, Tainá F.G.-
Autor(es): dc.creatorde Araújo, Anderson R.J.-
Autor(es): dc.creatorColqui, Jaimis S.L.-
Autor(es): dc.creatorKurokawa, Sérgio-
Autor(es): dc.creatorFilho, José Pissolato-
Data de aceite: dc.date.accessioned2025-08-21T21:57:12Z-
Data de disponibilização: dc.date.available2025-08-21T21:57:12Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2021-08-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1109/INDUSCON51756.2021.9529891-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233591-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233591-
Descrição: dc.descriptionLongitudinal impedance and transversal admittance of overhead transmission line (OHTL) are dependent on the ground which the line conductors are located. Several models in the literature consider the soil as an ideal conductor which the resistivity ρ and relative permittivity εr are constants. However, frequency-dependent soils are characterized by frequency-dependent (FD) electrical parameters (ρ(f) and εr(f)) which different formulations to represent the soil with constant and FD parameters have been developed. In order to obtain a precise transient response, these formulations must be included to compute the ground-return impedance and admittance of a OHTL. In this article, soils of low and high resistivities are studied considering the constant and FD soil models. Simulations are carried out in a high frequency range for soil parameters (resistivity and relative permittivity), ground-return impedance, attenuation constant and phase velocity. Then, the transient voltages are calculated for OHTLs located above real and constant parameter soils generated by two types of disturbances: an energization maneuver and a lightning direct strike. The numerical results show significant differences between the responses obtained with the constant and FD soil models, which these variations are more pronounced for soils of high resistivity and for a short OHTL.-
Descrição: dc.descriptionDep. of Electrical Engineering São Paulo State University (UNESP)-
Descrição: dc.descriptionSchool of Elec. and Comp. Engineering State University of Campinas (UNICAMP)-
Descrição: dc.descriptionDep. of Electrical Engineering São Paulo State University (UNESP)-
Formato: dc.format1-8-
Idioma: dc.languageen-
Relação: dc.relation2021 14th IEEE International Conference on Industry Applications, INDUSCON 2021 - Proceedings-
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Palavras-chave: dc.subjectElectromagnetic transients-
Palavras-chave: dc.subjectFrequency dependence-
Palavras-chave: dc.subjectSoil electrical parameters-
Palavras-chave: dc.subjectTransmission lines-
Título: dc.titleAn analysis of frequency-dependent soil models: Influence on the transient responses-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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