Effects of transformer-oil temperature on amplitude and peak frequency of partial discharge acoustic signals

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dc.contributor.authorShanker, T.B.
dc.contributor.authorNagamani, H.N.
dc.contributor.authorAntony, D.
dc.contributor.authorPunekar, G.S.
dc.date.accessioned2026-02-05T09:30:51Z
dc.date.issued2018
dc.description.abstractThe behavior of partial discharge (PD) acoustic emission (AE) signals in the transformer oil for a temperature range of 30-75 °C is studied via laboratory experiments. The AE signals are analyzed using the fast Fourier transform (FFT) to obtain the peak frequency and the AE amplitude. A peculiar behavior of reduction in the peak frequency and the AE amplitude observed above 65 °C is reported. An attempt is made to explain the reduction in the AE amplitude after a certain temperature by correlating it with the properties of the transformer oil such as the viscosity and the breakdown voltage. This AE signal analysis is perhaps an important advancement in the PD diagnosis and the PD spectrum analysis at different temperatures in the transformer oil. © 1986-2012 IEEE.
dc.identifier.citationIEEE Transactions on Power Delivery, 2018, 33, 6, pp. 3227-3229
dc.identifier.issn8858977
dc.identifier.urihttps://doi.org/10.1109/TPWRD.2018.2799489
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24918
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.subjectAcoustic emission testing
dc.subjectAcoustic emissions
dc.subjectFast Fourier transforms
dc.subjectInsulating oil
dc.subjectPartial discharges
dc.subjectPower transformers
dc.subjectSpectrum analysis
dc.subjectTemperature distribution
dc.subjectTemperature measurement
dc.subjectViscosity
dc.subjectAcoustic emission signal
dc.subjectAcoustic signals
dc.subjectamplitude
dc.subjectLaboratory experiments
dc.subjectOil insulations
dc.subjectOils
dc.subjectPeak frequencies
dc.subjectTemperature range
dc.subjectOil filled transformers
dc.titleEffects of transformer-oil temperature on amplitude and peak frequency of partial discharge acoustic signals

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