Publication:
Field experience of transformer untanking to identify electrical faults and comparison with dissolved gas analysis

Simple item page
dc.citedby6
dc.contributor.authorSamsudin R.en_US
dc.contributor.authorRamli A.Q.en_US
dc.contributor.authorBerhanuddin A.en_US
dc.contributor.authorZaidey Y.en_US
dc.contributor.authorid56004332500en_US
dc.contributor.authorid35779000400en_US
dc.contributor.authorid35777444200en_US
dc.contributor.authorid35779334900en_US
dc.date.accessioned2023-12-29T07:52:33Z
dc.date.available2023-12-29T07:52:33Z
dc.date.issued2009
dc.description.abstractPower transformer consists of components which are under consistent thermal and electrical stresses. The major component which degrades under these stresses is the paper insulation of the power transformer. The life of the transformer is determined by the condition of the paper insulation. The degradation of the paper insulation will be accelerated with the presence of electrical fault. Electrical fault in power transformer can be categorized into two which are Partial Discharge (PD) and Arcing. A PD will eventually develop into arcing. Any electrical fault in the transformer can be detected by using Dissolved Gas Analysis technique. The DGA can be used to differentiate between the types of faults in the transformer. However, DGA alone is not conclusive in determining the electrical fault in the transformer. As a complement, acoustic partial discharge technique was used to detect the electrical fault in the transformer. In this paper, the detection of electrical fault in two units of 33/11kV, 15MVA transformers were done by using Dissolved Gas Analysis (DGA). Then, the acoustic partial discharge test was carried out to detect the activity and locate the source of the electrical fault. During the acoustic partial discharge testing, some electrical discharge signal was picked-up from On-Load Tap Changer (OLTC) tank. Then, the transformers were un-tanking for physical inspection. Based on the inspection done on two transformers, the DGA analysis methods were unable to detect the OLTC oil contamination in the main tank oil and it is very dependent on the transformer conservator tank design. The acoustic partial discharge technique proves to be a useful tool in detecting electrical discharges in the power transformer. �2009 IEEE.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo5398629
dc.identifier.doi10.1109/ICEENVIRON.2009.5398629
dc.identifier.epage305
dc.identifier.scopus2-s2.0-77949583026
dc.identifier.spage299
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-77949583026&doi=10.1109%2fICEENVIRON.2009.5398629&partnerID=40&md5=11455f15080688fd7ae0fface2c25983
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30753
dc.pagecount6
dc.sourceScopus
dc.sourcetitleICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability
dc.subjectArcing
dc.subjectDissolved gas analysis
dc.subjectOn Load Tap Changer (OLTC)
dc.subjectPartial discharge
dc.subjectTotal dissolved combustible gas
dc.subjectDissolution
dc.subjectElectric fault location
dc.subjectFault detection
dc.subjectGas chromatography
dc.subjectGases
dc.subjectLoad testing
dc.subjectOil filled transformers
dc.subjectPollution detection
dc.subjectPower transformers
dc.subjectSustainable development
dc.subjectTanks (containers)
dc.subjectTransformer substations
dc.subjectVoltage control
dc.subjectAnalysis method
dc.subjectCombustible gas
dc.subjectDissolved gas analysis
dc.subjectDissolved-gas-analysis techniques
dc.subjectElectrical discharges
dc.subjectElectrical faults
dc.subjectElectrical stress
dc.subjectField experience
dc.subjectOil contamination
dc.subjectOn-load tap changers
dc.subjectPaper insulation
dc.subjectPartial discharge testing
dc.subjectPhysical inspection
dc.subjectTank design
dc.subjectPartial discharges
dc.titleField experience of transformer untanking to identify electrical faults and comparison with dissolved gas analysisen_US
dc.typeConference paperen_US
dspace.entity.typePublication
Files
Collections
SCOPUS