Reliability Analysis of the Operating Mechanism of Molded Case Circuit Breaker
Molded case circuit breakers are important protection devices in power distribution systems, and their reliability is of paramount importance.The flexible body finite element model of the circuit breaker operating mechanism components is established by Ansys, and the rigid-flexible coupling mechanism model is established in Adams for dynamic stress simulation.The simulation obtains the maximum stress value of the flexible body part in the free tripping action, outputs the load file of the force component in the simulation, and simulates the stress distribution cloud image in Ansys.According to the obtained data, the stress distribution and the cause of the maximum stress are analyzed, which lays a foundation for the reliability analysis and optimization design of the component.According to the stress-strength interference model, the reliability analysis of the components with the largest stress change is carried out, and the reliability of static strength and the reliability of fatigue strength are calculated respectively.The calculation results show that the research object has high reliability under static strength and fatigue strength, and the structural design and material selection meet the technical requirements.
Molded case circuit breaker operating mechanism reliability analysis stress-strength interference model
Changchun Chi Zetao Wang, Yifan Tong
School of Electrical Engineering, Shanghai Dianji University, Shanghai, 201306, China
国际会议
江苏苏州
英文
111-118
2019-11-04（万方平台首次上网日期，不代表论文的发表时间）