NDLI: Effect of temperatures on very low frequency partial discharge diagnostics

Content Provider	IEEE Xplore Digital Library
Author	Nguyen, H.V.P. Phung, B.T. Blackburn, T.
Copyright Year	2015
Description	Author affiliation: Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia (Nguyen, H.V.P.; Phung, B.T.; Blackburn, T.)
Abstract	Effects of temperatures on corona discharges developed by needle/bowl electrode configuration at very low frequency are investigated. Partial discharge measurements are carried out under enclosed controlled air temperature range between 20°C and 40°C. Sinusoidal voltage waveform is applied to the test sample under very low frequency and power frequency. Experiment results show that electrical discharge behaviours at 0.1 Hz and power frequency are dependent on ambient temperature in a similar manner. Nevertheless, there are still noticeable differences in partial discharge characteristics at very low frequency at various temperatures, especially in the phase position of discharge events. This could be explained from more availability of free electrons emitted from the negative electrode under higher temperature. Experiment results suggest that, under very low frequency excitation, there might be a critical temperature that triggers change in PD behaviour at a certain applied voltage level.
Starting Page	272
Ending Page	275
File Size	671674
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295261
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Discharges (electric) Temperature measurement Testing Electrodes Temperature distribution free electrons partial discharge corona very low frequency
Content Type	Text
Resource Type	Article

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