Arrangement Strategy of Particle Trap In DC GIL

摘要

Particle trap as a mean to suppress the movement of particles by constructing local low field regions, is a common particle suppression measure in gas insulation systems. In this paper, researches on DC metal traps have been carried out. A 110 kV DC gas insulated line(GIL) experimental platform has been set up and a corresponding 3D simulation model have been constructed. The trapping performance of traps of different widths and thicknesses has been studied through simulations and experiments. The results show that the trapping probability of metal particles increases and peak with the width of the trap decreasing, while it increases and tens to be stable as the thickness of the particle trap increases. The distribution of the metal particles near the insulator in the DC GIL is studied. Taking particle trapping time as a parameter and considering the particle drop point position, trap layout strategy can be designed, which can provide reference for the design of particle traps in the actual project.