Optimization of tower-footing grounding impedance for guyed-V transmission towers
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
DOI: | 10.1016/j.epsr.2019.105947 |
Texto Completo: | http://dx.doi.org/10.1016/j.epsr.2019.105947 http://hdl.handle.net/11449/190564 |
Resumo: | Backflashover is one of the mechanisms by which lightning strikes can cause outages/damages in power systems. In this context, the tower-footing grounding system of transmission towers has an essential role for mitigating overvoltages that may result in backflashovers. The tower-footing grounding systems consists of long conductors, in different shapes and arrangements, buried in either homogeneous or stratified ground in order to obtain the lowest tower-footing grounding impedance. In this paper, the tower-footing grounding impedance of a typical guyed-V transmission tower is evaluated in the frequency domain using full-wave electromagnetic analysis and method of moments (MoM). Various scenarios where the tower-footing grounding system is buried in a homogeneous, a 2-, and a 3-layer stratified soil are studied. Also, the effect of the opening angle between the electrodes in the counterpoise arrangement in reducing the footing impedance is investigated. It is shown that the tower-footing impedance is notably reduced, especially when stratified soil is considered in the analysis. |
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Repositório Institucional da UNESP |
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Optimization of tower-footing grounding impedance for guyed-V transmission towersGrounding electrodesGuyed-V transmission towersLightningTower footing impedanceBackflashover is one of the mechanisms by which lightning strikes can cause outages/damages in power systems. In this context, the tower-footing grounding system of transmission towers has an essential role for mitigating overvoltages that may result in backflashovers. The tower-footing grounding systems consists of long conductors, in different shapes and arrangements, buried in either homogeneous or stratified ground in order to obtain the lowest tower-footing grounding impedance. In this paper, the tower-footing grounding impedance of a typical guyed-V transmission tower is evaluated in the frequency domain using full-wave electromagnetic analysis and method of moments (MoM). Various scenarios where the tower-footing grounding system is buried in a homogeneous, a 2-, and a 3-layer stratified soil are studied. Also, the effect of the opening angle between the electrodes in the counterpoise arrangement in reducing the footing impedance is investigated. It is shown that the tower-footing impedance is notably reduced, especially when stratified soil is considered in the analysis.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University-UNESPFederal Institute of São Paulo (IFSP) Campus of VotuporangaUniversity of ManitobaSão Paulo State University-UNESPUniversidade Estadual Paulista (Unesp)Federal Institute of São Paulo (IFSP)University of Manitobade Araújo, Anderson R.J. [UNESP]Kurokawa, Sérgio [UNESP]Seixas, Claudiner M.Kordi, Behzad2019-10-06T17:17:25Z2019-10-06T17:17:25Z2019-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.epsr.2019.105947Electric Power Systems Research, v. 177.0378-7796http://hdl.handle.net/11449/19056410.1016/j.epsr.2019.1059472-s2.0-85070526856Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectric Power Systems Researchinfo:eu-repo/semantics/openAccess2024-07-04T19:06:57Zoai:repositorio.unesp.br:11449/190564Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:52:20.826283Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Optimization of tower-footing grounding impedance for guyed-V transmission towers |
title |
Optimization of tower-footing grounding impedance for guyed-V transmission towers |
spellingShingle |
Optimization of tower-footing grounding impedance for guyed-V transmission towers Optimization of tower-footing grounding impedance for guyed-V transmission towers de Araújo, Anderson R.J. [UNESP] Grounding electrodes Guyed-V transmission towers Lightning Tower footing impedance de Araújo, Anderson R.J. [UNESP] Grounding electrodes Guyed-V transmission towers Lightning Tower footing impedance |
title_short |
Optimization of tower-footing grounding impedance for guyed-V transmission towers |
title_full |
Optimization of tower-footing grounding impedance for guyed-V transmission towers |
title_fullStr |
Optimization of tower-footing grounding impedance for guyed-V transmission towers Optimization of tower-footing grounding impedance for guyed-V transmission towers |
title_full_unstemmed |
Optimization of tower-footing grounding impedance for guyed-V transmission towers Optimization of tower-footing grounding impedance for guyed-V transmission towers |
title_sort |
Optimization of tower-footing grounding impedance for guyed-V transmission towers |
author |
de Araújo, Anderson R.J. [UNESP] |
author_facet |
de Araújo, Anderson R.J. [UNESP] de Araújo, Anderson R.J. [UNESP] Kurokawa, Sérgio [UNESP] Seixas, Claudiner M. Kordi, Behzad Kurokawa, Sérgio [UNESP] Seixas, Claudiner M. Kordi, Behzad |
author_role |
author |
author2 |
Kurokawa, Sérgio [UNESP] Seixas, Claudiner M. Kordi, Behzad |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Federal Institute of São Paulo (IFSP) University of Manitoba |
dc.contributor.author.fl_str_mv |
de Araújo, Anderson R.J. [UNESP] Kurokawa, Sérgio [UNESP] Seixas, Claudiner M. Kordi, Behzad |
dc.subject.por.fl_str_mv |
Grounding electrodes Guyed-V transmission towers Lightning Tower footing impedance |
topic |
Grounding electrodes Guyed-V transmission towers Lightning Tower footing impedance |
description |
Backflashover is one of the mechanisms by which lightning strikes can cause outages/damages in power systems. In this context, the tower-footing grounding system of transmission towers has an essential role for mitigating overvoltages that may result in backflashovers. The tower-footing grounding systems consists of long conductors, in different shapes and arrangements, buried in either homogeneous or stratified ground in order to obtain the lowest tower-footing grounding impedance. In this paper, the tower-footing grounding impedance of a typical guyed-V transmission tower is evaluated in the frequency domain using full-wave electromagnetic analysis and method of moments (MoM). Various scenarios where the tower-footing grounding system is buried in a homogeneous, a 2-, and a 3-layer stratified soil are studied. Also, the effect of the opening angle between the electrodes in the counterpoise arrangement in reducing the footing impedance is investigated. It is shown that the tower-footing impedance is notably reduced, especially when stratified soil is considered in the analysis. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:17:25Z 2019-10-06T17:17:25Z 2019-12-01 |
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/10.1016/j.epsr.2019.105947 Electric Power Systems Research, v. 177. 0378-7796 http://hdl.handle.net/11449/190564 10.1016/j.epsr.2019.105947 2-s2.0-85070526856 |
url |
http://dx.doi.org/10.1016/j.epsr.2019.105947 http://hdl.handle.net/11449/190564 |
identifier_str_mv |
Electric Power Systems Research, v. 177. 0378-7796 10.1016/j.epsr.2019.105947 2-s2.0-85070526856 |
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_ |
1822218375431979008 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.epsr.2019.105947 |