Title :
Modeling of the AC arc discharge on ice surfaces
Author :
Farzaneh, M. ; Zhang, J. ; Chen, X.
Author_Institution :
Quebec Univ., Chicoutimi, Que., Canada
fDate :
1/1/1997 12:00:00 AM
Abstract :
A model for predicting the flashover voltage of ice-covered insulators energized with AC voltage is presented in this paper. The model takes into account the variation of ice surface conductivity as a function of freezing water conductivity. The effects of the length of the arc on its own characteristics, as well as the AC arc reignition condition, were determined in a laboratory investigation using triangular ice samples. The model is applied to a short string of 5 IEEE standard insulator units. There is an excellent concordance between the 50% flashover voltage calculated from the mathematical model and the experimental results
Keywords :
flashover; ice; insulators; surface conductivity; AC arc discharge modeling; AC arc reignition condition; AC voltage; IEEE standard insulator units; arc constants; arc length; arc reignition condition; equivalent surface conductivity; flashover voltage prediction; freezing water conductivity; ice surface conductivity; ice surfaces; ice-covered insulators; industrial insulators; triangular ice samples; Arc discharges; Conductors; Corona; Dielectrics and electrical insulation; Electrodes; Flashover; Ice surface; Laboratories; Poles and towers; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
