Optimal Design of 535kV High Speed Mechanical Switch Pin Based on MAXWELL and LS-DYNA

This paper first introduces the working principle and mathematical model of the high-speed mechanical switch electromagnetic repulsive mechanism. Based on the MAXWELL software, the electromagnetic field simulation was carried out for the high-speed mechanical switch model, and the speed, electromagnetic force and displacement curves of the metal disk were obtained. Then according to the electromagnetic force received by the metal disk, the impact dynamics simulation of the high-speed mechanical switch was carried out by LS-DYNA software, and the maximum stress of the pins of 8mm diameter was obtained, and the pin fracture was obtained by the tensile test. Finally, the pins are optimized to reduce the stress to a reasonable value.