274 / 2024-08-01 02:41:55

3D Pic-Mcc simulation of particles expansion for two kinds of curved contact and butt contact in the post-arc phase

vacuum arc,pic mcc,curved contact,post-arc

Curved contact is a vacuum interrupter contact structure with excellent interrupting performance. The process of post arc dielectric recovery during the disconnection process is not yet clear. However, one-dimensional and two-dimensional Particle-In-Cell/Monte Carlo (Pic-Mcc) models cannot accurately describe this process. This article establishes a three-dimensional Pic-Mcc model for the dielectric recovery process after vacuum arc of curved contacts. Taking the butt contact as a reference, the particle diffusion process and particle characteristics of ruled curved contact and revolute curved contact in the post-arc phase were compared and analyzed. The results indicate that the curved electrode structure and larger electrode surface area are the main factors affecting the post arc particle diffusion process.