Design and research of high stability repulsion mechanism of 12kV vacuum circuit breaker

Abstract

Using finite element simulation method to carry a comparative analysis of the repulsion mechanism and permanent magnetic mechanism, come to the conclusion that the repulsion mechanism has the advantage of rapidity;Aiming at the problem of high speed easy to cause instability, presenting a design of adding coil and repulsion chassis on the basis of the original repulsion mechanism, and optimizing the material of the repulsion chassis;On the basis of this, the experimental prototype is designed and manufactured, and a number of switch test is conducted, measuring the breaking time of each break-barking test and compared with the simulation results to verify the accuracy of the simulation results; The time dispersion of the break-brake is calculated, verifying the high stability of the novel repulsion mechanism.