PD pulse burst behavior of a transformer type synthetic organic ester fluid

The partial discharge (PD) pulse burst characteristics of a transformer type synthetic organic ester fluid were compared with those of an equivalent transformer type mineral oil. Wide and narrow bandwidth measurements were carried out to determine simultaneously the apparent charge transfers associa...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2008-12, Vol.15 (6), p.1498-1506
Main Authors: Pompili, M., Mazzetti, C., Bartnikas, R.
Format: Article
Language:English
Subjects:
Bandwidth
Bursting
Charge transfer
Current measurement
Esters
Fluid dynamics
Fluid flow
Fluids
Liquids
mineral oil
Minerals
Oil insulation
Partial discharges
Petroleum
Power transformer insulation
Pulse measurements
Pulse transformers
synthetic ester
Transformers
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Summary:The partial discharge (PD) pulse burst characteristics of a transformer type synthetic organic ester fluid were compared with those of an equivalent transformer type mineral oil. Wide and narrow bandwidth measurements were carried out to determine simultaneously the apparent charge transfers associated with the overall PD pulse burst as well as that of the individual discrete pulses within the PD pulse burst. The PD pulse burst behavior was found to be similar in both insulating liquids. The discharge cavity formation times ranged from 0.5 to 1.5 mus, while the charge transfers associated with the PD pulse bursts in the liquids were found to extend from approximately 5 to 30 pC.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2008.4712651