Method for actively expelling metal particles by using dielectric functional gradient insulator

The invention relates to a method for actively expelling metal particles by using a dielectric functional gradient insulator, which comprises the following steps of: designing a laminated dielectric functional gradient insulator, and calculating the electric field distribution of the laminated dielectric functional gradient insulator; according to the electric field distribution condition, a metal particle motion model is established, the effects of Coulomb force, gravity, buoyancy, electric field gradient force and gas resistance are considered, metal particles are released at different positions of the inner surface of the GIS shell, and the effect of expelling the metal particles by the epsilon L-FGM insulator is observed. The laminated epsilon L-FGM insulator has the capability of actively expelling metal particles, and has a good inhibition effect on the concave surface side and the convex surface side of the insulator. According to the method, metal particles near the insulator in the GIS can be effecti