Image Charge effect on Metallic Particle Movement in a single phase Gas Insulated Bus Duct with Dielectric Coated Enclosure

This paper presents the movement of a wire particle inside a single phase GIB(Gas Insulated Bus duct) .The movement of a particle is not only influenced by the electric fields produced by the conductor but also effected by the fields due to its Image charge .In view of this ,the present work analyzes the effect of Image charge also on the movement of the particle .The equations governing the motion of the particle due to Image charge has been developed, for the first time, to obtain the particle trajectories. Further, the enclosure in a GIB may be coated with a dielectric material to restore some of the dielectric strength of the compressed gas that is lost due to surface roughness and contamination with conducting particles. Hence, simulation has been carried out to study the effect of fields on the motion of the particle with and without Image charge effect and also with and without dielectric coating on the enclosure. Trajectories obtained for various voltages of aluminum and copper particles are presented and duly discussed.