Title :
The influence of dielectric surface charge distribution upon the partial discharge behavior in short air gaps
Author :
Nikonov, Vladimir ; Bartnikas, Ray ; Wertheimer, Michael R.
Author_Institution :
Dept. of Eng. Phys., Ecole Polytech. de Montreal, Que., Canada
fDate :
12/1/2001 12:00:00 AM
Abstract :
A two-dimensional breakdown model based upon the continuity equations for electrons and ions and the Poisson equation is employed to examine the influence of surface charges upon the partial discharge behavior of a short metallic-dielectric plane-parallel electrode gap of 0.05 cm in an air-like mixture at atmospheric pressure. The form of charge distribution at the dielectric electrode surface is found to significantly affect a number of important discharge parameters, such as the uniformity of the electric field, the charge density and its radial distribution within the gap, as well as the discharge propagation time
Keywords :
Poisson equation; air gaps; electrodes; electron density; partial discharges; plasma properties; plasma simulation; surface charging; surface discharges; 0.05 cm; 1 atm; Poisson equation; air-like mixture; atmospheric pressure; charge density; charge distribution; continuity equations; dielectric electrode surface; dielectric surface charge distribution; discharge parameters; discharge propagation time; electric field; electrons; ions; partial discharge behavior; radial distribution; short air gaps; short metallic-dielectric plane-parallel electrode gap; surface charges; two-dimensional breakdown model; uniformity; Dielectrics and electrical insulation; Electrodes; Fault location; Partial discharges; Plastic insulation; Poisson equations; Polymers; Sparks; Surface discharges; Surface treatment;
Journal_Title :
Plasma Science, IEEE Transactions on
