Investigation of Dielectric Response in a 22/0.4 kV Distribution Transformer: Effects of Moisture Content

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dc.contributor.authorDaengdee, Danaiwat
dc.contributor.authorBunlaksananusorn, Chanin
dc.contributor.authorSuksawat, Dusit
dc.contributor.authorChumpiboon, Komin
dc.contributor.authorJeenmuang, Siwakorn
dc.contributor.authorPattanadech, Norasage
dc.date.accessioned2026-08-06T10:43:30Z
dc.date.available2026-08-06T10:43:30Z
dc.date.issued2024-01-01
dc.description.abstractTransformers play a crucial role in power systems, ensuring efficient energy transmission and distribution. This research focuses on a 22/0.4 kV transformer decommissioned after over 20 years of service. The study involves draining the transformer oil completely and refilling it with oil characterized by known moisture content and breakdown voltage levels until reaching normal operating conditions. The objective is to study the effects of increased moisture content on the dielectric response within the actual structure of the transformer. Diagnostic measurement techniques, including Frequency Domain Spectroscopy (FDS) and Polarization Depolarization Current (PDC), are utilized to evaluate the insulation condition of the transformer. FDS provides information on the dielectric response over a wide frequency range, while PDC assesses the polarization and depolarization behavior of the insulation material. These techniques offer valuable information on the ageing and moisture content of the insulation. The experimental results will be presented and discussed in this paper.
dc.identifier.citationProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, 146-149, 2024
dc.identifier.doi10.1109/ICPADM61663.2024.10750614
dc.identifier.other2-s2.0-85211186963
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/14953
dc.sourceProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
dc.subjectBreakdown voltage
dc.subjectFrequency Domain Spectroscopy (FDS)
dc.subjectMoisture content
dc.subjectPolarization Depolarization Current (PDC)
dc.titleInvestigation of Dielectric Response in a 22/0.4 kV Distribution Transformer: Effects of Moisture Content
dc.typeConference Paper

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