Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/TLA.2022.9661466 http://hdl.handle.net/11449/223222 |
Resumo: | Grounding electrodes are expected to provide a low-impedance path for faults and lightning transient currents and protect the safety of electrical equipment and nearby people against dangerous induced potentials. In this context, a precise model of the grounding electrodes is needed to represent a certain electrode arrangement buried in stratified soil. This paper computes the grounding impedances of different grounding systems buried in three different soil configurations (homogeneous, 2-layer and 3-layer soil) modeled by its frequency-dependent electrical parameters. A simulation model using a commercial full-wave electromagnetic software FEKO to compute the grounding impedances is presented. Method of Moments(MoM), a frequency-domain numerical method, is employed to compute the grounding impedance in a frequency range of100 Hz to 5 MHz. Next, the developed ground potential rise(GPR) generated by two types of lightning currents (first and subsequent return strokes) injected into these grounding systems is computed. Time-domain GPR of each grounding system is also determined using the Vector Fitting (VF) technique combined with the ATP-software. Results show that GPR waveform is reduced when frequency-dependent soils are employed. This reduction is more pronounced in homogeneous and in 2-layersoils of high and moderated resistivity whereas the 3-layer soil has a minor impact due to the lower soil resistivity |
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Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of MomentsComputational modelingElectrodesGroundingMethod of momentsSoftwareSoilTransient analysisGrounding electrodes are expected to provide a low-impedance path for faults and lightning transient currents and protect the safety of electrical equipment and nearby people against dangerous induced potentials. In this context, a precise model of the grounding electrodes is needed to represent a certain electrode arrangement buried in stratified soil. This paper computes the grounding impedances of different grounding systems buried in three different soil configurations (homogeneous, 2-layer and 3-layer soil) modeled by its frequency-dependent electrical parameters. A simulation model using a commercial full-wave electromagnetic software FEKO to compute the grounding impedances is presented. Method of Moments(MoM), a frequency-domain numerical method, is employed to compute the grounding impedance in a frequency range of100 Hz to 5 MHz. Next, the developed ground potential rise(GPR) generated by two types of lightning currents (first and subsequent return strokes) injected into these grounding systems is computed. Time-domain GPR of each grounding system is also determined using the Vector Fitting (VF) technique combined with the ATP-software. Results show that GPR waveform is reduced when frequency-dependent soils are employed. This reduction is more pronounced in homogeneous and in 2-layersoils of high and moderated resistivity whereas the 3-layer soil has a minor impact due to the lower soil resistivityState University Campinas (UNICAMP)Sao Paulo State University (UNESP)State University of CampinasUniversity of ManitobaSao Paulo State University (UNESP)Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)University of ManitobaColqui, Jaimis Sajid Leon [UNESP]2022-04-28T19:49:26Z2022-04-28T19:49:26Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article269-275http://dx.doi.org/10.1109/TLA.2022.9661466IEEE Latin America Transactions, v. 20, n. 2, p. 269-275, 2022.1548-0992http://hdl.handle.net/11449/22322210.1109/TLA.2022.96614662-s2.0-85122632433Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIEEE Latin America Transactionsinfo:eu-repo/semantics/openAccess2022-04-28T19:49:26Zoai:repositorio.unesp.br:11449/223222Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:49:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
title |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
spellingShingle |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments Colqui, Jaimis Sajid Leon [UNESP] Computational modeling Electrodes Grounding Method of moments Software Soil Transient analysis |
title_short |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
title_full |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
title_fullStr |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
title_full_unstemmed |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
title_sort |
Transient Analysis of Grounding Electrodes in Multilayer Soils Using Method of Moments |
author |
Colqui, Jaimis Sajid Leon [UNESP] |
author_facet |
Colqui, Jaimis Sajid Leon [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (UNESP) University of Manitoba |
dc.contributor.author.fl_str_mv |
Colqui, Jaimis Sajid Leon [UNESP] |
dc.subject.por.fl_str_mv |
Computational modeling Electrodes Grounding Method of moments Software Soil Transient analysis |
topic |
Computational modeling Electrodes Grounding Method of moments Software Soil Transient analysis |
description |
Grounding electrodes are expected to provide a low-impedance path for faults and lightning transient currents and protect the safety of electrical equipment and nearby people against dangerous induced potentials. In this context, a precise model of the grounding electrodes is needed to represent a certain electrode arrangement buried in stratified soil. This paper computes the grounding impedances of different grounding systems buried in three different soil configurations (homogeneous, 2-layer and 3-layer soil) modeled by its frequency-dependent electrical parameters. A simulation model using a commercial full-wave electromagnetic software FEKO to compute the grounding impedances is presented. Method of Moments(MoM), a frequency-domain numerical method, is employed to compute the grounding impedance in a frequency range of100 Hz to 5 MHz. Next, the developed ground potential rise(GPR) generated by two types of lightning currents (first and subsequent return strokes) injected into these grounding systems is computed. Time-domain GPR of each grounding system is also determined using the Vector Fitting (VF) technique combined with the ATP-software. Results show that GPR waveform is reduced when frequency-dependent soils are employed. This reduction is more pronounced in homogeneous and in 2-layersoils of high and moderated resistivity whereas the 3-layer soil has a minor impact due to the lower soil resistivity |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:49:26Z 2022-04-28T19:49:26Z 2022-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1109/TLA.2022.9661466 IEEE Latin America Transactions, v. 20, n. 2, p. 269-275, 2022. 1548-0992 http://hdl.handle.net/11449/223222 10.1109/TLA.2022.9661466 2-s2.0-85122632433 |
url |
http://dx.doi.org/10.1109/TLA.2022.9661466 http://hdl.handle.net/11449/223222 |
identifier_str_mv |
IEEE Latin America Transactions, v. 20, n. 2, p. 269-275, 2022. 1548-0992 10.1109/TLA.2022.9661466 2-s2.0-85122632433 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
IEEE Latin America Transactions |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
269-275 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803046155752308736 |