A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/218896 |
Resumo: | Long cylindrical rods are commonly employed to grounding system in transmission lines and they can be buried in stratified soils. In this condition, the grounding impedance is significantly modified by the presence of another layer of soil where analytical formulae are not found in literature. Additionally, frequency dependence of soil parameters (resistivity rho and permittivity epsilon) is an important effect that has to be taken in to account for a precise electromagnetic analysis. To tackle these problems, a new approach is proposed to compute grounding impedance of vertical rods buried in a stratified soil. This approach is based on the equivalent quadripole representation rod seen as short transmission lines in each layer of ground. In this paper, the frequency dependence of soil parameters is considered individually in soil composed by several layers of ground. This approach is compared with numerical and analytical methods proposed in the literature and has presented a good agreement. Simulation results show that adding another layer of soil and considering the frequency dependence of electrical parameters of soil cause a significant reduction in the voltage peaks of GPR (Grounding Potential Rise) waveforms. |
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Repositório Institucional da UNESP |
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A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer SoilLong cylindrical rods are commonly employed to grounding system in transmission lines and they can be buried in stratified soils. In this condition, the grounding impedance is significantly modified by the presence of another layer of soil where analytical formulae are not found in literature. Additionally, frequency dependence of soil parameters (resistivity rho and permittivity epsilon) is an important effect that has to be taken in to account for a precise electromagnetic analysis. To tackle these problems, a new approach is proposed to compute grounding impedance of vertical rods buried in a stratified soil. This approach is based on the equivalent quadripole representation rod seen as short transmission lines in each layer of ground. In this paper, the frequency dependence of soil parameters is considered individually in soil composed by several layers of ground. This approach is compared with numerical and analytical methods proposed in the literature and has presented a good agreement. Simulation results show that adding another layer of soil and considering the frequency dependence of electrical parameters of soil cause a significant reduction in the voltage peaks of GPR (Grounding Potential Rise) waveforms.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Campinas, Sch Elect & Comp Engn, BR-13083852 Campinas, SP, BrazilSao Paulo State Univ, BR-15385000 Ilha Solteira, SP, BrazilSao Paulo State Univ, BR-15385000 Ilha Solteira, SP, BrazilFAPESP: 2019/01396-1IeeeUniversidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)Araujo, Anderson R. J.Colqui, Jaimis S. L. [UNESP]Kurokawa, Sergio [UNESP]Pissolato, JoseIEEE2022-04-28T17:30:24Z2022-04-28T17:30:24Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject52020 Ieee Power & Energy Society General Meeting (pesgm). New York: Ieee, 5 p., 2020.1944-9925http://hdl.handle.net/11449/218896WOS:000679246603024Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2020 Ieee Power & Energy Society General Meeting (pesgm)info:eu-repo/semantics/openAccess2024-07-04T19:11:44Zoai:repositorio.unesp.br:11449/218896Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:49:40.297199Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
title |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
spellingShingle |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil Araujo, Anderson R. J. |
title_short |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
title_full |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
title_fullStr |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
title_full_unstemmed |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
title_sort |
A New Approach to Compute Grounding Impedance of Rods in a Frequency Dependent Multi-layer Soil |
author |
Araujo, Anderson R. J. |
author_facet |
Araujo, Anderson R. J. Colqui, Jaimis S. L. [UNESP] Kurokawa, Sergio [UNESP] Pissolato, Jose IEEE |
author_role |
author |
author2 |
Colqui, Jaimis S. L. [UNESP] Kurokawa, Sergio [UNESP] Pissolato, Jose IEEE |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Araujo, Anderson R. J. Colqui, Jaimis S. L. [UNESP] Kurokawa, Sergio [UNESP] Pissolato, Jose IEEE |
description |
Long cylindrical rods are commonly employed to grounding system in transmission lines and they can be buried in stratified soils. In this condition, the grounding impedance is significantly modified by the presence of another layer of soil where analytical formulae are not found in literature. Additionally, frequency dependence of soil parameters (resistivity rho and permittivity epsilon) is an important effect that has to be taken in to account for a precise electromagnetic analysis. To tackle these problems, a new approach is proposed to compute grounding impedance of vertical rods buried in a stratified soil. This approach is based on the equivalent quadripole representation rod seen as short transmission lines in each layer of ground. In this paper, the frequency dependence of soil parameters is considered individually in soil composed by several layers of ground. This approach is compared with numerical and analytical methods proposed in the literature and has presented a good agreement. Simulation results show that adding another layer of soil and considering the frequency dependence of electrical parameters of soil cause a significant reduction in the voltage peaks of GPR (Grounding Potential Rise) waveforms. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2022-04-28T17:30:24Z 2022-04-28T17:30:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
2020 Ieee Power & Energy Society General Meeting (pesgm). New York: Ieee, 5 p., 2020. 1944-9925 http://hdl.handle.net/11449/218896 WOS:000679246603024 |
identifier_str_mv |
2020 Ieee Power & Energy Society General Meeting (pesgm). New York: Ieee, 5 p., 2020. 1944-9925 WOS:000679246603024 |
url |
http://hdl.handle.net/11449/218896 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2020 Ieee Power & Energy Society General Meeting (pesgm) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
5 |
dc.publisher.none.fl_str_mv |
Ieee |
publisher.none.fl_str_mv |
Ieee |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808129125539381248 |