Optimization of Three-Dimensional Magnetic Field in Vacuum Interrupter Using Particle Swarm Optimization Algorithm

Based on particle swarm optimization algorithm, a three-dimensional model of the contact system of vacuum interrupter is established. Combined with the particle swarm optimization algorithm and finite element magnetic field numerical simulation method, the contact structure parameters of a 400V/20kA vacuum interrupter is taken as the optimization variables, and the maximum magnetic field intensity at the arc root is determined as the optimization objective. The distribution of the maximum transverse magnetic field intensity at the contact gap under the optimum parameters has been illustrated and analyzed.