Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling

Autores
Stebel, Michal; Kubiczek, Krzysztof; Rios Rodriguez, Gustavo Adolfo; Palacz, Michal; Garelli, Luciano; Melka, Bartlomiej; Haida, Michal; Bodys, Jakub; Nowak, Andrzej J.; Lasek, Pawel; Stepien, Mariusz; Pessolani, Francisco; Amadei, Mauro; Granata, Daniel; Storti, Mario Alberto; Smolka, Jacek
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Power transformers are the first devices used to transfer the electrical energy produced in power plants to the grid to supply the industrial and individual receivers with electricity. The heat generation in windings and core, being an effect of the power losses, is usually dissipated in large units by using mineral oils, which are harmful to the environment. Nowadays, the industry and global society seek environmentally-friendly alternatives. One of the most promising substitute for their high biodegradability, safety in operation, and favourable thermo-physical properties are natural ester oils. For this reason, a numerical study of 8.5 MVA disk-type power transformer cooled using conventional mineral oil and a commercially used rapeseed ester oil is presented in this paper. Moreover, due to different thermal behaviour of the considered oils, the comparison was made for the unit working in different seasons of hot and moderate climate zones (Argentina and Poland). In the numerical approach, electromagnetic (EMAG) and computational fluid dynamics (CFD) models were used for a detailed study of the selected device. In particular, a novel and very efficient EMAG–CFD–CFD coupling procedure was developed to assess the cooling of the large power transformer. Such a coupled computational procedure allowed for the detailed investigation of the power loss, oil flow characteristics, and temperatures with a satisfying computational effort. The results showed that the average windings temperatures are higher by 2–9 K when the ester oil is used, dependent on the ambient conditions. The hotspot temperature in the low voltage windings increased by up to 9 K and up to 18 K in the high voltage windings using ester oil. According to the results, the oil duct construction requires modification in the high voltage region for transformers cooled using mineral oil in cold climate conditions.
Fil: Stebel, Michal. Silesian University Of Technology; Polonia
Fil: Kubiczek, Krzysztof. Silesian University Of Technology; Polonia
Fil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Palacz, Michal. Silesian University Of Technology; Polonia
Fil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Melka, Bartlomiej. Silesian University Of Technology; Polonia
Fil: Haida, Michal. Silesian University Of Technology; Polonia
Fil: Bodys, Jakub. Silesian University Of Technology; Polonia
Fil: Nowak, Andrzej J.. Silesian University Of Technology; Polonia
Fil: Lasek, Pawel. Silesian University Of Technology; Polonia
Fil: Stepien, Mariusz. Silesian University Of Technology; Polonia
Fil: Pessolani, Francisco. Tadeo Czerweny S.a.; Argentina
Fil: Amadei, Mauro. Tadeo Czerweny S.a.; Argentina
Fil: Granata, Daniel. Tadeo Czerweny S.a.; Argentina
Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Smolka, Jacek. Silesian University Of Technology; Polonia
Materia
BIODEGRADABLE OIL
COMPUTATIONAL FLUID DYNAMICS
COOLING SYSTEM
COUPLED PROBLEM
ELECTROMAGNETIC
POWER TRANSFORMER
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/204562
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/204562
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD couplingStebel, MichalKubiczek, KrzysztofRios Rodriguez, Gustavo AdolfoPalacz, MichalGarelli, LucianoMelka, BartlomiejHaida, MichalBodys, JakubNowak, Andrzej J.Lasek, PawelStepien, MariuszPessolani, FranciscoAmadei, MauroGranata, DanielStorti, Mario AlbertoSmolka, JacekBIODEGRADABLE OILCOMPUTATIONAL FLUID DYNAMICSCOOLING SYSTEMCOUPLED PROBLEMELECTROMAGNETICPOWER TRANSFORMERhttps://purl.org/becyt/ford/2.2https://purl.org/becyt/ford/2Power transformers are the first devices used to transfer the electrical energy produced in power plants to the grid to supply the industrial and individual receivers with electricity. The heat generation in windings and core, being an effect of the power losses, is usually dissipated in large units by using mineral oils, which are harmful to the environment. Nowadays, the industry and global society seek environmentally-friendly alternatives. One of the most promising substitute for their high biodegradability, safety in operation, and favourable thermo-physical properties are natural ester oils. For this reason, a numerical study of 8.5 MVA disk-type power transformer cooled using conventional mineral oil and a commercially used rapeseed ester oil is presented in this paper. Moreover, due to different thermal behaviour of the considered oils, the comparison was made for the unit working in different seasons of hot and moderate climate zones (Argentina and Poland). In the numerical approach, electromagnetic (EMAG) and computational fluid dynamics (CFD) models were used for a detailed study of the selected device. In particular, a novel and very efficient EMAG–CFD–CFD coupling procedure was developed to assess the cooling of the large power transformer. Such a coupled computational procedure allowed for the detailed investigation of the power loss, oil flow characteristics, and temperatures with a satisfying computational effort. The results showed that the average windings temperatures are higher by 2–9 K when the ester oil is used, dependent on the ambient conditions. The hotspot temperature in the low voltage windings increased by up to 9 K and up to 18 K in the high voltage windings using ester oil. According to the results, the oil duct construction requires modification in the high voltage region for transformers cooled using mineral oil in cold climate conditions.Fil: Stebel, Michal. Silesian University Of Technology; PoloniaFil: Kubiczek, Krzysztof. Silesian University Of Technology; PoloniaFil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Palacz, Michal. Silesian University Of Technology; PoloniaFil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Melka, Bartlomiej. Silesian University Of Technology; PoloniaFil: Haida, Michal. Silesian University Of Technology; PoloniaFil: Bodys, Jakub. Silesian University Of Technology; PoloniaFil: Nowak, Andrzej J.. Silesian University Of Technology; PoloniaFil: Lasek, Pawel. Silesian University Of Technology; PoloniaFil: Stepien, Mariusz. Silesian University Of Technology; PoloniaFil: Pessolani, Francisco. Tadeo Czerweny S.a.; ArgentinaFil: Amadei, Mauro. Tadeo Czerweny S.a.; ArgentinaFil: Granata, Daniel. Tadeo Czerweny S.a.; ArgentinaFil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Smolka, Jacek. Silesian University Of Technology; PoloniaElsevier2022-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/204562Stebel, Michal; Kubiczek, Krzysztof; Rios Rodriguez, Gustavo Adolfo; Palacz, Michal; Garelli, Luciano; et al.; Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling; Elsevier; International Journal of Electrical Power & Energy Systems; 136; 107737; 3-2022; 1-190142-0615CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0142061521009613info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijepes.2021.107737info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:36:58Zoai:ri.conicet.gov.ar:11336/204562instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:36:58.341CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
title Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
spellingShingle Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
Stebel, Michal
BIODEGRADABLE OIL
COMPUTATIONAL FLUID DYNAMICS
COOLING SYSTEM
COUPLED PROBLEM
ELECTROMAGNETIC
POWER TRANSFORMER
title_short Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
title_full Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
title_fullStr Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
title_full_unstemmed Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
title_sort Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling
dc.creator.none.fl_str_mv Stebel, Michal
Kubiczek, Krzysztof
Rios Rodriguez, Gustavo Adolfo
Palacz, Michal
Garelli, Luciano
Melka, Bartlomiej
Haida, Michal
Bodys, Jakub
Nowak, Andrzej J.
Lasek, Pawel
Stepien, Mariusz
Pessolani, Francisco
Amadei, Mauro
Granata, Daniel
Storti, Mario Alberto
Smolka, Jacek
author Stebel, Michal
author_facet Stebel, Michal
Kubiczek, Krzysztof
Rios Rodriguez, Gustavo Adolfo
Palacz, Michal
Garelli, Luciano
Melka, Bartlomiej
Haida, Michal
Bodys, Jakub
Nowak, Andrzej J.
Lasek, Pawel
Stepien, Mariusz
Pessolani, Francisco
Amadei, Mauro
Granata, Daniel
Storti, Mario Alberto
Smolka, Jacek
author_role author
author2 Kubiczek, Krzysztof
Rios Rodriguez, Gustavo Adolfo
Palacz, Michal
Garelli, Luciano
Melka, Bartlomiej
Haida, Michal
Bodys, Jakub
Nowak, Andrzej J.
Lasek, Pawel
Stepien, Mariusz
Pessolani, Francisco
Amadei, Mauro
Granata, Daniel
Storti, Mario Alberto
Smolka, Jacek
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BIODEGRADABLE OIL
COMPUTATIONAL FLUID DYNAMICS
COOLING SYSTEM
COUPLED PROBLEM
ELECTROMAGNETIC
POWER TRANSFORMER
topic BIODEGRADABLE OIL
COMPUTATIONAL FLUID DYNAMICS
COOLING SYSTEM
COUPLED PROBLEM
ELECTROMAGNETIC
POWER TRANSFORMER
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.2
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Power transformers are the first devices used to transfer the electrical energy produced in power plants to the grid to supply the industrial and individual receivers with electricity. The heat generation in windings and core, being an effect of the power losses, is usually dissipated in large units by using mineral oils, which are harmful to the environment. Nowadays, the industry and global society seek environmentally-friendly alternatives. One of the most promising substitute for their high biodegradability, safety in operation, and favourable thermo-physical properties are natural ester oils. For this reason, a numerical study of 8.5 MVA disk-type power transformer cooled using conventional mineral oil and a commercially used rapeseed ester oil is presented in this paper. Moreover, due to different thermal behaviour of the considered oils, the comparison was made for the unit working in different seasons of hot and moderate climate zones (Argentina and Poland). In the numerical approach, electromagnetic (EMAG) and computational fluid dynamics (CFD) models were used for a detailed study of the selected device. In particular, a novel and very efficient EMAG–CFD–CFD coupling procedure was developed to assess the cooling of the large power transformer. Such a coupled computational procedure allowed for the detailed investigation of the power loss, oil flow characteristics, and temperatures with a satisfying computational effort. The results showed that the average windings temperatures are higher by 2–9 K when the ester oil is used, dependent on the ambient conditions. The hotspot temperature in the low voltage windings increased by up to 9 K and up to 18 K in the high voltage windings using ester oil. According to the results, the oil duct construction requires modification in the high voltage region for transformers cooled using mineral oil in cold climate conditions.
Fil: Stebel, Michal. Silesian University Of Technology; Polonia
Fil: Kubiczek, Krzysztof. Silesian University Of Technology; Polonia
Fil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Palacz, Michal. Silesian University Of Technology; Polonia
Fil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Melka, Bartlomiej. Silesian University Of Technology; Polonia
Fil: Haida, Michal. Silesian University Of Technology; Polonia
Fil: Bodys, Jakub. Silesian University Of Technology; Polonia
Fil: Nowak, Andrzej J.. Silesian University Of Technology; Polonia
Fil: Lasek, Pawel. Silesian University Of Technology; Polonia
Fil: Stepien, Mariusz. Silesian University Of Technology; Polonia
Fil: Pessolani, Francisco. Tadeo Czerweny S.a.; Argentina
Fil: Amadei, Mauro. Tadeo Czerweny S.a.; Argentina
Fil: Granata, Daniel. Tadeo Czerweny S.a.; Argentina
Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Smolka, Jacek. Silesian University Of Technology; Polonia
description Power transformers are the first devices used to transfer the electrical energy produced in power plants to the grid to supply the industrial and individual receivers with electricity. The heat generation in windings and core, being an effect of the power losses, is usually dissipated in large units by using mineral oils, which are harmful to the environment. Nowadays, the industry and global society seek environmentally-friendly alternatives. One of the most promising substitute for their high biodegradability, safety in operation, and favourable thermo-physical properties are natural ester oils. For this reason, a numerical study of 8.5 MVA disk-type power transformer cooled using conventional mineral oil and a commercially used rapeseed ester oil is presented in this paper. Moreover, due to different thermal behaviour of the considered oils, the comparison was made for the unit working in different seasons of hot and moderate climate zones (Argentina and Poland). In the numerical approach, electromagnetic (EMAG) and computational fluid dynamics (CFD) models were used for a detailed study of the selected device. In particular, a novel and very efficient EMAG–CFD–CFD coupling procedure was developed to assess the cooling of the large power transformer. Such a coupled computational procedure allowed for the detailed investigation of the power loss, oil flow characteristics, and temperatures with a satisfying computational effort. The results showed that the average windings temperatures are higher by 2–9 K when the ester oil is used, dependent on the ambient conditions. The hotspot temperature in the low voltage windings increased by up to 9 K and up to 18 K in the high voltage windings using ester oil. According to the results, the oil duct construction requires modification in the high voltage region for transformers cooled using mineral oil in cold climate conditions.
publishDate 2022
dc.date.none.fl_str_mv 2022-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/204562
Stebel, Michal; Kubiczek, Krzysztof; Rios Rodriguez, Gustavo Adolfo; Palacz, Michal; Garelli, Luciano; et al.; Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling; Elsevier; International Journal of Electrical Power & Energy Systems; 136; 107737; 3-2022; 1-19
0142-0615
CONICET Digital
CONICET
url http://hdl.handle.net/11336/204562
identifier_str_mv Stebel, Michal; Kubiczek, Krzysztof; Rios Rodriguez, Gustavo Adolfo; Palacz, Michal; Garelli, Luciano; et al.; Thermal analysis of 8.5 MVA disk-type power transformer cooled by biodegradable ester oil working in ONAN mode by using advanced EMAG–CFD–CFD coupling; Elsevier; International Journal of Electrical Power & Energy Systems; 136; 107737; 3-2022; 1-19
0142-0615
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0142061521009613
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijepes.2021.107737
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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