Measurements and performance evaluations of natural ester and mineral oil-immersed identical transformers

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dc.contributor.authorCilliyuz, Yusuf
dc.contributor.authorBicen, Yunus
dc.contributor.authorAras, Faruk
dc.contributor.authorAydugan, Guzide
dc.date.accessioned2021-12-01T18:49:54Z
dc.date.available2021-12-01T18:49:54Z
dc.date.issued2021
dc.department[Belirlenecek]en_US
dc.description.abstractThe use of natural esters as an insulating liquid has become popular since the early 2000s. Studies in the literature emphasize the superiority of natural esters as compared to mineral oils. In these studies, the prominent properties of natural esters are presented as being environmentally friendly, safe, and delaying the aging of cellulosic insulation material. Although there is no doubt in terms of their characteristics, such as being environmentally and safe, exaggerated comments are made about the delay of aging of the paper material used in the insulation of transformer windings. This is because comparative experimental applications on mineral oil and natural esters are carried out under artificial and equal conditions provided in the laboratory environment. Whereas, performing these experiments on identical transformers will give more realistic results. In this study, two identical transformers were designed and equipped with precision fiber optic temperature sensors. Temperature differences that vary depending on the load between high voltage and low voltage windings were measured with a high degree of accuracy for both identical transformers. Besides these measurements, physical and chemical changes were analyzed on samples taken from insulation liquids. It was observed that the physical and chemical properties of the insulation liquids directly affect the operating performance of the transformers. Thanks to the differences in viscosity of insulating liquids, the heat dissipation due to losses in the windings were different for both transformers. Both heat distribution and temperature differences in the windings varied depending on the loading factors. Considering all these factors together, comprehensively evaluations were made on the aging rate of cellulosic insulation and the service life of the transformers.en_US
dc.description.sponsorship[Teydeb-3100329]en_US
dc.description.sponsorshipWe would like to thank Schneider Electric for allowing working together at the prototype product testing and evaluating processes. These processes were funded by the industry R&D projects support program (Teydeb-3100329).en_US
dc.identifier.doi10.1016/j.ijepes.2020.106517
dc.identifier.issn0142-0615
dc.identifier.issn1879-3517
dc.identifier.scopus2-s2.0-85091340419en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijepes.2020.106517
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10797
dc.identifier.volume125en_US
dc.identifier.wosWOS:000594691900014en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofInternational Journal Of Electrical Power & Energy Systemsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectTransformeren_US
dc.subjectTemperature measurementen_US
dc.subjectFiber opticen_US
dc.subjectNatural esteren_US
dc.subjectAgingen_US
dc.subjectPower Transformeren_US
dc.subjectInsulationen_US
dc.subjectPaperen_US
dc.subjectTemperatureen_US
dc.subjectDegradationen_US
dc.subjectLiquiden_US
dc.subjectImpacten_US
dc.titleMeasurements and performance evaluations of natural ester and mineral oil-immersed identical transformersen_US
dc.typeArticleen_US

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