Motion Characteristic Analysis of High Voltage Circuit Breaker Transmission Mechanism

It is of great significance to analyze the opening and closing motion characteristics of the high-voltage circuit breaker transmission mechanism. Through the analysis of the dynamic characteristics of the opening and closing, the internal defects of the circuit breaker can be effectively detected, which provides a theoretical basis for the future health assessment, fault prediction and diagnosis of the circuit breaker. In this paper, from the perspective of theoretical modeling, the mathematical model of the hinge four-link and crank slider is established according to the structure of the circuit breaker transmission mechanism. Then, based on the same principle of the joint movement state, the two parts are integrated to obtain the overall motion model of transmission mechanism. Finally, the Matlab/Simulink software is used to simulate the displacement and acceleration curves of the main contacts during the opening and closing process, so that the motion characteristics are analyzed and compared with other literatures to verify the rationality of the results.