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A Multiphysical model to study moisture dynamics in transformers

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Eléctricaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Diagnóstico de Máquinas Eléctricas y Materiales Aislantes (DIAMAT)es
dc.contributor.authorGarcía de Burgos, María Belén
dc.contributor.authorVillarroel Rodríguez, Rafael David
dc.contributor.authorGarcía Gómez, Diego Fernando
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2022-09-27T09:55:25Z
dc.date.available2022-09-27T09:55:25Z
dc.date.issued2019-08-01
dc.description.abstractMoisture is one of the key variables that must be considered when determining the load profiles that can be safely applied to a transformer. The presence of high amount of water accelerates the aging rate of the transformers solid insulation, shortening the life expectancy of the equipment. Moreover, the dynamic processes of moisture migration between paper and oil must be considered in order to avoid a potential cause of failure, such as the formation of bubbles in the paper-oil interface, or the moisture saturation and the subsequent formation of liquid water in oil. These processes are linked to the changes in temperature; however, within the transformer, both processes have very different time constants, which complicates the analysis. In this paper, a mathematical model is presented, which allows us to study the moisture dynamics in a transformer. The model considers a multi-physical approach incorporating a thermal module and a moisture dynamic module that makes it possible to analyze the behavior of the moisture for a certain load profile. Some application cases are included in this paper to illustrate the model operation.en
dc.description.sponsorshipThis work was supported by the Spanish Ministry of Economy and Competitiveness under Grant DPI2015-71219-C2-2-R. Paper no. TPWRD-01091-2018.en
dc.format.extent9
dc.identifier.bibliographicCitationGarcia, B., Villarroel, R., & Garcia, D. (2019). A multiphysical model to study moisture dynamics in transformers. IEEE transactions on power delivery, 34(4), 1365–1373.en
dc.identifier.doi10.1109/TPWRD.2019.2899363
dc.identifier.issn0885-8977
dc.identifier.publicationfirstpage1365
dc.identifier.publicationissue4
dc.identifier.publicationlastpage1373
dc.identifier.publicationtitleIEEE Transactions on Power Deliveryen
dc.identifier.publicationvolume34
dc.identifier.urihttps://hdl.handle.net/10016/35796
dc.identifier.uxxiAR/0000024737
dc.language.isoeng
dc.publisherIEEEen
dc.relation.projectIDGobierno de España. DPI2015-71219-C2-2-Res
dc.relation.projectIDGobierno de España. TPWRD-01091-2018es
dc.rights© 2019 IEEEen
dc.rights.accessRightsopen accessen
dc.subject.ecienciaIngeniería Industriales
dc.subject.otherEquilibrium chartsen
dc.subject.otherMoisture dynamicsen
dc.subject.otherMultiphysical modelen
dc.subject.otherOil-paper insulationen
dc.subject.otherTemperature distributionen
dc.subject.otherTransformer load managementen
dc.titleA Multiphysical model to study moisture dynamics in transformersen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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