Enhanced health index for power transformers diagnosis
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.engfailanal.2021.105427 http://hdl.handle.net/11449/208704 |
Resumo: | Power Transformers (PTs) failures in electrical networks cause significant expenses for power utilities, making the use of assessment techniques essential to efficiently diagnose and estimate the actual operating conditions of such equipment's. Efficient diagnoses allow operation management of this chain of assets aiming at the ideal balance among investments, maintenance costs and operation performance. Taking this into account, this paper presents an enhanced diagnostic methodology to estimate the PTs’ health based on simple and low-cost data which can be easily obtained without interrupting the unit's operation. The methodology uses data from oil sample analysis and acquisition systems of available electrical quantities and proposes the creation of a new diagnostic factor to identify the condition of the transformer's solid insulation. The new diagnostic factor is based on the history of the average daily load curve of a PT, allowing the estimation and accounting for the PT insulation degradation “in service”. Thus, the enhanced diagnostic methodology proposed in this work can estimate and update the transformerś health estimation in shorter time intervals than required by conventional Health Index (HI) methodologies and may be an important tool for strategic planning and resource optimization in power systems’ companies. The effectiveness of the proposed diagnostic methodology was assessed considering data from a population of 204 power transformers installed in Brazil and the direct comparison with the maintenance history from the conventional HI diagnostic methodology. |
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Repositório Institucional da UNESP |
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Enhanced health index for power transformers diagnosisComponent failure modesFailure analysisHealth IndexMaintenance planningPower TransformersPower Transformers (PTs) failures in electrical networks cause significant expenses for power utilities, making the use of assessment techniques essential to efficiently diagnose and estimate the actual operating conditions of such equipment's. Efficient diagnoses allow operation management of this chain of assets aiming at the ideal balance among investments, maintenance costs and operation performance. Taking this into account, this paper presents an enhanced diagnostic methodology to estimate the PTs’ health based on simple and low-cost data which can be easily obtained without interrupting the unit's operation. The methodology uses data from oil sample analysis and acquisition systems of available electrical quantities and proposes the creation of a new diagnostic factor to identify the condition of the transformer's solid insulation. The new diagnostic factor is based on the history of the average daily load curve of a PT, allowing the estimation and accounting for the PT insulation degradation “in service”. Thus, the enhanced diagnostic methodology proposed in this work can estimate and update the transformerś health estimation in shorter time intervals than required by conventional Health Index (HI) methodologies and may be an important tool for strategic planning and resource optimization in power systems’ companies. The effectiveness of the proposed diagnostic methodology was assessed considering data from a population of 204 power transformers installed in Brazil and the direct comparison with the maintenance history from the conventional HI diagnostic methodology.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Unesp – Sao Paulo State University, Av. Três de Março, 511, ICTS – Institute of Science and Technology of SorocabaUnesp – Sao Paulo State University, Av. Três de Março, 511, ICTS – Institute of Science and Technology of SorocabaCNPq: 313710/2019-8Universidade Estadual Paulista (Unesp)Da Silva, Daniella Gonzalez Tinois [UNESP]Braga Da Silva, Halley J. [UNESP]Marafão, Fernando Pinhabel [UNESP]Paredes, Helmo Kelis Morales [UNESP]Gonçalves, Flavio Alessandro Serrão [UNESP]2021-06-25T11:17:38Z2021-06-25T11:17:38Z2021-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.engfailanal.2021.105427Engineering Failure Analysis, v. 126.1350-6307http://hdl.handle.net/11449/20870410.1016/j.engfailanal.2021.1054272-s2.0-85106361589Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEngineering Failure Analysisinfo:eu-repo/semantics/openAccess2021-10-23T19:02:26Zoai:repositorio.unesp.br:11449/208704Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:47:36.560808Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Enhanced health index for power transformers diagnosis |
title |
Enhanced health index for power transformers diagnosis |
spellingShingle |
Enhanced health index for power transformers diagnosis Da Silva, Daniella Gonzalez Tinois [UNESP] Component failure modes Failure analysis Health Index Maintenance planning Power Transformers |
title_short |
Enhanced health index for power transformers diagnosis |
title_full |
Enhanced health index for power transformers diagnosis |
title_fullStr |
Enhanced health index for power transformers diagnosis |
title_full_unstemmed |
Enhanced health index for power transformers diagnosis |
title_sort |
Enhanced health index for power transformers diagnosis |
author |
Da Silva, Daniella Gonzalez Tinois [UNESP] |
author_facet |
Da Silva, Daniella Gonzalez Tinois [UNESP] Braga Da Silva, Halley J. [UNESP] Marafão, Fernando Pinhabel [UNESP] Paredes, Helmo Kelis Morales [UNESP] Gonçalves, Flavio Alessandro Serrão [UNESP] |
author_role |
author |
author2 |
Braga Da Silva, Halley J. [UNESP] Marafão, Fernando Pinhabel [UNESP] Paredes, Helmo Kelis Morales [UNESP] Gonçalves, Flavio Alessandro Serrão [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Da Silva, Daniella Gonzalez Tinois [UNESP] Braga Da Silva, Halley J. [UNESP] Marafão, Fernando Pinhabel [UNESP] Paredes, Helmo Kelis Morales [UNESP] Gonçalves, Flavio Alessandro Serrão [UNESP] |
dc.subject.por.fl_str_mv |
Component failure modes Failure analysis Health Index Maintenance planning Power Transformers |
topic |
Component failure modes Failure analysis Health Index Maintenance planning Power Transformers |
description |
Power Transformers (PTs) failures in electrical networks cause significant expenses for power utilities, making the use of assessment techniques essential to efficiently diagnose and estimate the actual operating conditions of such equipment's. Efficient diagnoses allow operation management of this chain of assets aiming at the ideal balance among investments, maintenance costs and operation performance. Taking this into account, this paper presents an enhanced diagnostic methodology to estimate the PTs’ health based on simple and low-cost data which can be easily obtained without interrupting the unit's operation. The methodology uses data from oil sample analysis and acquisition systems of available electrical quantities and proposes the creation of a new diagnostic factor to identify the condition of the transformer's solid insulation. The new diagnostic factor is based on the history of the average daily load curve of a PT, allowing the estimation and accounting for the PT insulation degradation “in service”. Thus, the enhanced diagnostic methodology proposed in this work can estimate and update the transformerś health estimation in shorter time intervals than required by conventional Health Index (HI) methodologies and may be an important tool for strategic planning and resource optimization in power systems’ companies. The effectiveness of the proposed diagnostic methodology was assessed considering data from a population of 204 power transformers installed in Brazil and the direct comparison with the maintenance history from the conventional HI diagnostic methodology. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:17:38Z 2021-06-25T11:17:38Z 2021-08-01 |
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.engfailanal.2021.105427 Engineering Failure Analysis, v. 126. 1350-6307 http://hdl.handle.net/11449/208704 10.1016/j.engfailanal.2021.105427 2-s2.0-85106361589 |
url |
http://dx.doi.org/10.1016/j.engfailanal.2021.105427 http://hdl.handle.net/11449/208704 |
identifier_str_mv |
Engineering Failure Analysis, v. 126. 1350-6307 10.1016/j.engfailanal.2021.105427 2-s2.0-85106361589 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Engineering Failure Analysis |
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_ |
1808129552687300608 |