Influence of electrode surface charge accumulation upon partial discharge behavior

Abstract

Theoretical modeling of partial discharge -- Basic physical model -- Constitutive equations and parameter values -- Initial and boundary conditions -- Numerical considerations -- Integration of the continuity equations -- Poisson's solver -- Calculations of the discharge parameters -- Discharge toward the dielectric-coated anode -- The physical system and assumptions -- The effect of surface charge accumulation -- The influence of partial discharge plasma on dielectric surface degradation -- Effect of dielectric surface inhomogeneity on the charge distribution -- Simulation of discharge propagation for a negative applied voltage -- Effects of surface charge accumulation -- The influence of partial discharge plasma on dielectric surface degradation -- Effect of dielectric surface inhomogeneity on the charge distribution -- Simulation of discharge propagation for a negative applied voltage -- Effects of charge decay on the anode surface -- Estimation of charge spreading time.