NDLI: Effect of viscosity on pre-breakdown conduction pulses at a point cathode in silicone oils

Content Provider	IEEE Xplore Digital Library
Author	Qureshi, M.W. Chadband, W.G.
Copyright Year	1990
Description	Author affiliation: Dept. of Electr. Eng., King Saud Univ., Riyadh, Saudi Arabia (Qureshi, M.W.)
Abstract	The occurrence of prebreakdown pulses at a point cathode under DC has been observed to be strongly influenced by insulating-liquid viscosity. Using a high bandwidth detection system it is revealed that each burst is composed of a well-structured set of pulses which increase in amplitude, initially in a linear fashion, with time before becoming irregular. The order of occurrence of these pulses and the time lapse obeys a proper law, and the total time domain of this linear regime is viscosity-dependent. Increasing the viscosity results in an increase in the duration of the burst and in the time interval between the pulses within the burst. Using the onset of each pulse or burst to trigger the capture of a shadowgraph produces an associated low-density region. The size of the shadow region increases with the burst duration. A preliminary model for the initial growth of the low-density region associated with these pulses is presented.<>
Starting Page	392
Ending Page	396
File Size	149292
Page Count	5
File Format	PDF
DOI	10.1109/ICDL.1990.202930
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-10
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Viscosity Cathodes Oils Pulse amplifiers Bandwidth Electrodes Breakdown voltage Dielectrics and electrical insulation Dielectric liquids Hydrocarbons
Content Type	Text
Resource Type	Article

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