A Monitoring Method for Average Winding and Hot-Spot Temperatures of Single-Phase, Oil-Immersed Transformers

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dc.authoridDirik, Hasan/0000-0003-0625-7213
dc.contributor.authorGezegin, Cenk
dc.contributor.authorOzgonenel, Okan
dc.contributor.authorDirik, Hasan
dc.date.accessioned2025-03-23T19:32:04Z
dc.date.available2025-03-23T19:32:04Z
dc.date.issued2021
dc.departmentSinop Üniversitesi
dc.description.abstractTransformers are the most expensive element of a power system, and so transformer monitoring systems are becoming more important as loads increase. Under heavy loading conditions, the hot-spot temperature of a transformer is the most critical parameter to determine the limit of loading. Therefore, to make an accurate estimation of hot-spot temperature and maintain the reliability of a power system, dynamic thermal models or methods must be employed. Due to the complexity of thermal phenomena, the methods presented so far needs to be improved to reduce computational errors. This is particularly the case for variable loading conditions and power utilities are still in need of good techniques. This paper describes two methods to determine temperature in single-phase, oil-immersed transformers. The first method calculates average windings temperature (AWT) using the voltage and current from primary and secondary windings. The second method, which uses data from the first method, determines the hot-spot temperature of the transformer. The methods have been investigated by experiments on a 30 kVA single-phase transformer and verified the results using COMSOL (TM) software. Our methods have proven more accurate than the IEEE Annex G method.
dc.identifier.doi10.1109/TPWRD.2020.3035842
dc.identifier.endpage3203
dc.identifier.issn0885-8977
dc.identifier.issn1937-4208
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85096834018
dc.identifier.scopusqualityQ1
dc.identifier.startpage3196
dc.identifier.urihttps://doi.org/10.1109/TPWRD.2020.3035842
dc.identifier.urihttps://hdl.handle.net/11486/5406
dc.identifier.volume36
dc.identifier.wosWOS:000698898900065
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIeee-Inst Electrical Electronics Engineers Inc
dc.relation.ispartofIeee Transactions On Power Delivery
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectWindings
dc.subjectOil insulation
dc.subjectPower transformer insulation
dc.subjectResistance
dc.subjectTemperature
dc.subjectOils
dc.subjectTemperature sensors
dc.subjectAverage winding temperature (AWT)
dc.subjecthot spot factor (HSF)
dc.subjecthot spot temperature (HST)
dc.subjecttop oil temperature (TOT)
dc.subjectmonitoring
dc.subjectfinite element method (FEM)
dc.titleA Monitoring Method for Average Winding and Hot-Spot Temperatures of Single-Phase, Oil-Immersed Transformers
dc.typeArticle

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