Particle Motion In Common Enclosure Three Phase Gib

Gas Insulated substation (GIS) is now well established. In field installation, it has been observed that metallic particle contaminations often present in GIS and such contamination adversely affect the insulation integrity. A method based on particle motion is proposed to determine the particle trajectory in a three phase Gas Insulated Substation (GIS) or Gas Insulated Busduct (GIB). In order to determine the movement of particle in a GIB, an outer enclosure of diameter 500mm and inner conductor of diameter 59mm spaced equilaterally was considered. Aluminum and Copper wires of 0.1mm/10mm were considered to be present on enclosure surface. The motion of the wire (particle) was simulated using the charge acquired by the particle, the macroscopic field at the particle site, the drag coefficient of restitution, Reynold's number and coefficient of restitution. The distance traveled by the particle, calculated using Cartesian coordinates, for given sets of parameters is presented in this paper. In order to determine the random behavior of moving particles, the calculation of movement in axial and radial directions was done at every time stem using rectangle random numbers. Typical results for aluminum and copper wire are also described in this paper.