Modeling of the AC Arc Discharge on Snow-covered Insulators

A mathematical model for predicting the ac flashover voltage of snow-covered insulators is presented. The arc constant parameters in air gaps and inside snow, as well as the arc reignition condition are determined using a cylindrical model. The effects of the arc length on the arc constants paramete...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2007-12, Vol.14 (6), p.1390-1400
Main Authors: Hemmatjou, H., Farzaneh, M., Fofana, I.
Format: Article
Language:English
Subjects:
Arc discharges
Conductivity
Dielectrics and electrical insulation
Electrical insulation
Flashover
Ice
Insulators
Leakage current
Mathematical model
Mathematical models
Reignition
Snow
Voltage
Water pollution
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Summary:A mathematical model for predicting the ac flashover voltage of snow-covered insulators is presented. The arc constant parameters in air gaps and inside snow, as well as the arc reignition condition are determined using a cylindrical model. The effects of the arc length on the arc constants parameters are also investigated. The model is then applied to an EPDM insulator artificially covered with natural snow. There is good concordance between the flashover results determined from the mathematical model and those obtained experimentally.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2007.4401221