Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.epsr.2021.107364 http://hdl.handle.net/11449/233139 |
Resumo: | Grounding electrodes are used to provide a low-impedance dissipation path for the excess lightning or fault currents. Several studies have been dedicated to the computation of the grounding impedance of different electrode arrangements considering either the frequency dependence of soil parameters (resistivity ρ and relative permittivity εr) or the multi-layer nature of soil. This paper aims at the calculation of the grounding impedance and the ground potential rise (GPR) of simple electrode arrangements (vertical and cross electrodes) due to the injection of first and subsequent lightning currents in various configurations of soil, considering a frequency-dependent stratified soil. A frequency-domain full-wave electromagnetic solver based on the Method of Moment (MoM) that employs a stratified medium Green's function is used to compute the grounding impedance in a frequency range of 100Hz to 10MHz. The transient GPRs are computed using the equivalent circuit of the grounding system, obtained through the application of the Vector Fitting (VF) technique and recursive convolution method. The simulation results show that considering the frequency dependence of the soil parameters has no effect on the low-frequency grounding impedance up to ≈10kHz. However, the frequency dependence of soil parameters leads to a considerable variation of the grounding impedance at higher frequencies especially for soils of higher resistivity. Furthermore, it is shown that considering the layers of soil has a more significant impact on the GPR of the vertical electrode than that of the cross electrode. |
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Repositório Institucional da UNESP |
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spelling |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soilElectromagnetic transientsFrequency-dependent soilGrounding impedanceLightningStratified soilGrounding electrodes are used to provide a low-impedance dissipation path for the excess lightning or fault currents. Several studies have been dedicated to the computation of the grounding impedance of different electrode arrangements considering either the frequency dependence of soil parameters (resistivity ρ and relative permittivity εr) or the multi-layer nature of soil. This paper aims at the calculation of the grounding impedance and the ground potential rise (GPR) of simple electrode arrangements (vertical and cross electrodes) due to the injection of first and subsequent lightning currents in various configurations of soil, considering a frequency-dependent stratified soil. A frequency-domain full-wave electromagnetic solver based on the Method of Moment (MoM) that employs a stratified medium Green's function is used to compute the grounding impedance in a frequency range of 100Hz to 10MHz. The transient GPRs are computed using the equivalent circuit of the grounding system, obtained through the application of the Vector Fitting (VF) technique and recursive convolution method. The simulation results show that considering the frequency dependence of the soil parameters has no effect on the low-frequency grounding impedance up to ≈10kHz. However, the frequency dependence of soil parameters leads to a considerable variation of the grounding impedance at higher frequencies especially for soils of higher resistivity. Furthermore, it is shown that considering the layers of soil has a more significant impact on the GPR of the vertical electrode than that of the cross electrode.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)University of CampinasSão Paulo State UniversityFederal Institute of São Paulo-IFSPUniversity of ManitobaSão Paulo State UniversityFAPESP: 2019/01396-1Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)Federal Institute of São Paulo-IFSPUniversity of Manitobade Araújo, Anderson R.J.Colqui, Jaimis S.L. [UNESP]de Seixas, Claudiner M.Kurokawa, Sérgio [UNESP]Salarieh, BamdadPissolato Filho, JoséKordi, Behzad2022-05-01T04:26:38Z2022-05-01T04:26:38Z2021-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.epsr.2021.107364Electric Power Systems Research, v. 198.0378-7796http://hdl.handle.net/11449/23313910.1016/j.epsr.2021.1073642-s2.0-85106520489Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectric Power Systems Researchinfo:eu-repo/semantics/openAccess2024-07-04T19:06:35Zoai:repositorio.unesp.br:11449/233139Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:42:18.996755Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
title |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
spellingShingle |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil de Araújo, Anderson R.J. Electromagnetic transients Frequency-dependent soil Grounding impedance Lightning Stratified soil |
title_short |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
title_full |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
title_fullStr |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
title_full_unstemmed |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
title_sort |
Computation of ground potential rise and grounding impedance of simple arrangement of electrodes buried in frequency-dependent stratified soil |
author |
de Araújo, Anderson R.J. |
author_facet |
de Araújo, Anderson R.J. Colqui, Jaimis S.L. [UNESP] de Seixas, Claudiner M. Kurokawa, Sérgio [UNESP] Salarieh, Bamdad Pissolato Filho, José Kordi, Behzad |
author_role |
author |
author2 |
Colqui, Jaimis S.L. [UNESP] de Seixas, Claudiner M. Kurokawa, Sérgio [UNESP] Salarieh, Bamdad Pissolato Filho, José Kordi, Behzad |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (UNESP) Federal Institute of São Paulo-IFSP University of Manitoba |
dc.contributor.author.fl_str_mv |
de Araújo, Anderson R.J. Colqui, Jaimis S.L. [UNESP] de Seixas, Claudiner M. Kurokawa, Sérgio [UNESP] Salarieh, Bamdad Pissolato Filho, José Kordi, Behzad |
dc.subject.por.fl_str_mv |
Electromagnetic transients Frequency-dependent soil Grounding impedance Lightning Stratified soil |
topic |
Electromagnetic transients Frequency-dependent soil Grounding impedance Lightning Stratified soil |
description |
Grounding electrodes are used to provide a low-impedance dissipation path for the excess lightning or fault currents. Several studies have been dedicated to the computation of the grounding impedance of different electrode arrangements considering either the frequency dependence of soil parameters (resistivity ρ and relative permittivity εr) or the multi-layer nature of soil. This paper aims at the calculation of the grounding impedance and the ground potential rise (GPR) of simple electrode arrangements (vertical and cross electrodes) due to the injection of first and subsequent lightning currents in various configurations of soil, considering a frequency-dependent stratified soil. A frequency-domain full-wave electromagnetic solver based on the Method of Moment (MoM) that employs a stratified medium Green's function is used to compute the grounding impedance in a frequency range of 100Hz to 10MHz. The transient GPRs are computed using the equivalent circuit of the grounding system, obtained through the application of the Vector Fitting (VF) technique and recursive convolution method. The simulation results show that considering the frequency dependence of the soil parameters has no effect on the low-frequency grounding impedance up to ≈10kHz. However, the frequency dependence of soil parameters leads to a considerable variation of the grounding impedance at higher frequencies especially for soils of higher resistivity. Furthermore, it is shown that considering the layers of soil has a more significant impact on the GPR of the vertical electrode than that of the cross electrode. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-01 2022-05-01T04:26:38Z 2022-05-01T04:26:38Z |
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/10.1016/j.epsr.2021.107364 Electric Power Systems Research, v. 198. 0378-7796 http://hdl.handle.net/11449/233139 10.1016/j.epsr.2021.107364 2-s2.0-85106520489 |
url |
http://dx.doi.org/10.1016/j.epsr.2021.107364 http://hdl.handle.net/11449/233139 |
identifier_str_mv |
Electric Power Systems Research, v. 198. 0378-7796 10.1016/j.epsr.2021.107364 2-s2.0-85106520489 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electric Power Systems Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808129236490256384 |