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Please use this identifier to cite or link to this item: https://ptsldigital.ukm.my/jspui/handle/123456789/578992
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dc.contributor.authorM. H. Roslan (UPNM UPM)
dc.contributor.authorN. Azis (UPM)
dc.contributor.authorJ. Jasni (UPM)
dc.contributor.authorZ. Ibrahim (UPM)
dc.date.accessioned2023-11-06T03:12:05Z-
dc.date.available2023-11-06T03:12:05Z-
dc.date.issued2017-02
dc.identifier.issn0128-7680
dc.identifier.otherukmvital:116378
dc.identifier.urihttps://ptsldigital.ukm.my/jspui/handle/123456789/578992-
dc.descriptionTop-Oil Temperature (TOT) is one of the basic components to estimate the Hot-Spot temperature (HST) of the transformers. This paper presents an alternative TOT model based on the heat transfer theory that utilises Nonlinear Thermal Resistance (NTR) and Lumped Capacitance (LC) approaches. It is applied in a thermal-electrical analogy and the heat transfer equivalent equation is determined. This model is tested on a measured TOT of 250 MVA ONAF and 400 MVA ONAF transformers obtained from IEC 60076-7 and previous research. A comparison of TOT is carried out with the existing models IEC 60076-7 exponential and IEEE Loading Guide clause 7 methods. It is found that the thermal model based on the NTR and LC approach could determine the measured TOT closer than the existing methods available in the standards.
dc.language.isoen
dc.publisherUniversiti Putra Malaysia Press
dc.relation.haspartPertanika Journals
dc.relation.urihttp://www.pertanika.upm.edu.my/regular_issues.php?jtype=2&journal=JST-25-S-2
dc.rightsUKM
dc.subjectTop-oil temperature
dc.subjectThermal model
dc.subjectTransformers
dc.titleTop-oil temperature model for transformers based on nonlinear thermal resistance, lumped capacitance and thermal-electrical analogy
dc.typeJournal Article
dc.format.volume25
dc.format.pages151-160
dc.format.issueSpecial Issue
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