Computation of the Three-Dimensional Electric Field Using Particle Swarm Optimization Charge Simulation Method

In this paper, particle swarm optimization (PSO) and charge simulation method (CSM) are combined to calculate the three-dimensional electric field of sphere-plane electrode, rod-plane electrode and simplified high-voltage insulator string. The optimization variable of PSO is the coordinate or charge quantity of the simulation charge, and the fitness function is the potential error of the matching point. In the calculation of the sphere-plane electrode, the calculation results verify the effectiveness of PSOCSM; the comparison with GACSM highlights the advantages of short calculation time and high precision of PSOCSM. In the calculation of the rod-plane electrode, a method to reduce the optimization variables of PSO is proposed to further improve the computational accuracy and optimization efficiency of PSOCSM. In the calculation of the rod-plane electrode and the high voltage insulator string, the comparison results of GACSM and PSOCSM reflect the excellent optimization performance of PSO. The research results provide a new calculation method for electric field calculation of high voltage electrical appliances.