126kV真空断路器电机操动机构动态仿真与试验研究  

Dynamic Simulation and Experiment of Motor Operating Mechanism for 126 kV Vacuum Circuit Breaker

作　　者：林莘[1] 马希志 李昊旻[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《高压电器》2015年第9期9-16,共8页High Voltage Apparatus

基　　金：国家自然科学基金项目(51377107)~~

摘　　要：为了简化高压真空断路器操动机构的结构并提高其工作可靠性,笔者对不同转子结构的真空断路器电机操动机构的动态特性进行了研究。建立了126 kV真空断路器操动机构的动态仿真模型,推导了驱动电机主轴侧的等效转动惯量、动态反力以及动触头行程与驱动电机转角的关系。依据上述分析并综合考虑绕组端部效应对电机启动过程的影响,采用场—路—运动耦合法对驱动电机在断路器分、合闸操作过程中的瞬态磁场和动态机械特性参数进行了仿真计算。结合仿真结果制成了永磁驱动电机样机,进行了操动机构与断路器联机试验试验。试验结果表明:电机操动机构能实现断路器的可靠分、合闸操作,平均合闸速度达到2.51 m/s,平均分闸速度达到3.35 m/s,满足断路器的要求。动态性能仿真结果与试验结果基本吻合,验证了仿真分析的有效性。To simplify improve its reliability operating , the dynamic mechanism structure of a characteristics of motor high voltage vacuum operating mechanism circuit breaker and with different rotor structure were investigated. A dynamic simulation model of the operating mechanism was established to obtain the equivalent moment of inertia, the dynamic counter-force, and the relationship between stroke of moving contact and rotating angle of motor. Consequently, the transient magnetic field and dynamic parameters of the driving motor in switching process were simulated by employing the coupled field-circuit-movement method and taking the end winding leakage inductance into consideration. According to the simulation results, a prototype of driving motor was made. The motor operating mechanism was tested, and the results show that the motor operating mechanism can make reliable opening and closing operation of a 126 kV vacuum circuit breaker, and the average closing and opening velocities reach 2.51 m/s and 3.35 m/s, respectively, which meet the simulation results of the dynamic characteristics agree validity of the simulation analysis method. requirement of the vacuum circuit breaker. The well with the experimental results, verifying the

关 键 词：126 kV真空断路器 电机操动机构 动态特性 有限元仿真 

分 类 号：TM561.2[电气工程—电器]