3D Pic-Mcc Simulation of Particles Expansion for Straight Curved Contact and Butt Contact in the Post-arc Phase
摘要
Straight 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 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.