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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12933

Title: Characteristics of prebreakdown discharges in silicone oil under short duration high voltage pulses
Authors: Iqbal Qureshi, M.
Al-Sulaiman, A.A.
Keywords: Positive and negative discharge; Raleigh's criteria; Shadowgraph; Short duration voltage pulses; Silicone oil
Issue Date: 2006
Publisher: 2nd Annual International Conference on Emerging Techonologies 2006, ICET 2006; Peshawar; 13 November 2006 through 14 November 2006; Category number 06EX1474C; Code 72402
Citation: Proceedings - 2nd International Conference on Emerging Technologies 2006, ICET 2006 2006, Article number 4136921, Pages 409-415
Abstract: A short duration impulse voltage generator was constructed to study the onset and propagation modes of discharges in silicone oil. The events were captured using PC-based shadowgraphic optical system hooked up with a high resolution digital camera. Results show that positive discharges propagate with three distinct modes attaining supersonic velocity. Negative discharges initiate at much higher voltage amplitudes as compared to positive discharges and were found to expand as long as they remain attached with the stressed point electrode and collapse in size as they leave it. This phenomena was tested on Raleigh's model of cavity growth and collapse and proved that negative discharges are produced as an outcome of vaporization of liquid when it is stressed under high voltage pulses. © 2006 IEEE.
URI: http://hdl.handle.net/123456789/12933
ISSN: 1424405033; 978-142440503-9
Appears in Collections:College of Engineering

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