Dielectric Coating Effect with Particle Movement in a 3-Phase GIB

The dielectric coating effect on the motion of the Particle inside a Gas Insulated Bus duct (GIB) of
three phase using epoxy resin coating of dielectric inside f GIB outer enclosure of inner surface
without image charge is presented in this paper. Simulation is performed by considering various
parameters like drag, gravitational and the electrostatic forces acting on the particle and a
mathematical model was derived. A 2nd order differential equation for the particle motion is solved and
restitution coefficient was considered at each impact of particle with the GIB enclosure. At the particle
locations, estimation of electric fields instantaneously was made by CSM. The particle motion in the
absence of effect of image charge is considered in a 3-phase GIB with dielectric coating. For voltage
levels like 400 kV, 600 kV, 800 kV and 1200 kV class, the movement of radial in nature is found for
particles like aluminum and copper inside GIB. Analysis of all the results were done and presented in
this paper.