DefinePK

Abstract

The insulation performance of gas insulated systems (GIS) can be substantially affected by the presence and movement of contaminating metallic particles.  With and without Image charge effect on metallic particle movement in a single phase GIB (Gas Insulated Bus duct) and also with and without dielectric coating on the enclosure is considered in this paper. In the present work the equations describing the motion of the particle due to image charge has been proposed to obtain the particle trajectories. The simulation has been carried out to obtain the particle trajectories at an applied voltage of 132 KV and also the effect of various parameters like radius and length of the Particle, pressure in the bus duct has been examined and presented. Typically a GIB of inner conductor and outer enclosure diameters of 55/155 have been considered for analysis. Different metallic contaminations viz Aluminum and Copper have been considered for the above study.