Optimization Analysis of the Electric Field Distribution along the Surface of the Basin Insulator

In the production process of pot insulators in gas-insulated metal fully enclosed composites (GIS), defects such as burrs, air gaps and metal particles may be generated inside the chamber, causing distortion of the electric field in the vicinity, and adding shields. The electric field near the basin insulator can be improved. In this article, 252 kV GIS basin insulators are used as the object, and the influence of the shielded hood on the electric field intensity of the concave and convex surface of the basin insulator, the distribution of metal particle defects on the surrounding electric field and the electric field distribution of the basin insulators with different thicknesses are simulated. Impact. The results show that the electric field intensity of the concave and convex surface of the basin insulator is reduced after the shield is added inside the GIS. When there is metal particle defect, the electric field intensity is more obvious than when there is no defect; the electric field of the shield insulator for the different thickness of the basin insulator is added. The intensity effects are different, and the thickness of the basin insulator can be appropriately reduced to optimize the electric field intensity along the surface. The simulation results in this article can provide reference for the local optimization of GIS basin insulator structure.