Nanosecond streak photography of discharge initiation on ice surfaces

This paper presents an exploratory experimental study of discharge initiation on surface of ice. The phenomena underlying these processes are, as yet, poorly understood. To elucidate the initiation process in particular, ultra high-speed streak photography was used to observe and analyze the first v...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2004-06, Vol.11 (3), p.450-460
Main Authors: Brettschneider, S., Farzaneh, M., Srivastava, K.D.
Format: Article
Language:English
Subjects:
Atmospheric modeling
Atmospherics
Conductivity
Context modeling
Dielectrics and electrical insulation
Discharge
Electric potential
Electric power generation
Electrical insulation
Ice surface
Mathematical analysis
Nanostructure
Photography
Power system simulation
Streak photography
Studies
Surface discharges
Temperature
Voltage
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Summary:This paper presents an exploratory experimental study of discharge initiation on surface of ice. The phenomena underlying these processes are, as yet, poorly understood. To elucidate the initiation process in particular, ultra high-speed streak photography was used to observe and analyze the first visible discharges and a number of parameters were investigated. It could be shown that ambient temperature, conductivity of ice surface and the presence of imperfections on the ice surface influence not only the critical voltage for discharge initiation, but also the velocity of discharge development. Some parameters could be identified, which should be investigated further. The present paper is the first stage of a long-term research effort in this new field. This study should enable further experimental investigations and mathematical simulations to gain better understanding of ice surface discharges, specifically in the context of electrical insulation integrity of support insulators in power systems operating under severe atmospheric conditions.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2004.1306723