126kV真空断路器电机操动机构的研究
发布时间：2019-04-11 18:18
【摘要】：为了解决高压断路器操动机构运动系统复杂、机械故障率高、运动控制性差以及智能化水平低等问题，本文以126kV单断口真空断路器电机操动机构为研究对象，从电机操动机构的动态特性分析、机械操作特性测试、电机结构设计以及实际工程应用等方面进行了深入研究，在此基础上提出了适用于高压断路器电机操动机构的非对称绕组永磁摆角驱动电机(Asymmetric Windings Permanent Magnet Swing AngleDriving Motor，AWPMSADM)。主要研究工作如下： （1）研究了电机操动机构与真空断路器的运动配合特性和负载特性。建立了电机操动机构的运动分析模型，推导了真空断路器绝缘拉杆与操动机构驱动电机之间的运动对应关系，，采用解析法计算了真空断路器运动负载折算到驱动电机主轴侧的等效负载转矩和等效转动惯量。通过分析得到了驱动电机在断路器分合闸操作过程中的转角变化范围、等效转动惯量变化趋势以及负载峰值转矩等参数。 （2）研究了不同转子结构驱动电机的动态特性。采用场-路-运动耦合法分析比较了埋入表贴型、燕尾卡槽型、直线内嵌型和外V内嵌型4种转子结构驱动电机的机械运动特性和瞬态电磁特性，分析结果表明燕尾卡槽型转子结构驱动电机的速度特性、电磁特性和机械可靠性相对较好。建立了真空断路器电机操动机构虚拟样机模型，分析了其动力学特性并对仿真模型进行了试验验证。 （3）进行了真空断路器与电机操动机构的机械操作特性试验。研制了燕尾卡槽型转子结构的驱动电机样机，建立了真空断路器与电机操动机构的联机试验平台。完成了电机操动机构与真空断路器在不同操作电压下的空载分合闸操作试验、自动重合闸试验、分合闸操作稳定性试验以及恒定和区间调速试验。试验结果表明，电机操动机构驱动真空断路器动作时的速度特性满足相关要求，操作稳定性较好，PWM电压调节法能实现对电机操动机构运动的有效调控。 （4）提出了AWPMSADM的总体设计方案和启动-制动非对称绕组结构。给出了AWPMSADM主要结构参数的设计流程，对比分析了卡槽表贴型、分段卡槽表贴型、分段内嵌Ⅰ型和分段内嵌Ⅱ型4种转子结构AWPMSADM的动态机械特性和电磁特性。设计了能明显提高AWPMSADM启动特性并有效实现电气制动的非对称启动-制动绕组结构，通过有限元仿真分析研究了不同绕组排布对AWPMSADM动态特性的影响。最终得到AWPMSADM的总体设计方案。
[Abstract]:In order to solve the problems of complex motion system, high mechanical failure rate, poor motion control and low intelligent level of the high voltage circuit breaker operating mechanism, this paper takes the motor operating mechanism of 126kV single-break vacuum circuit breaker as the research object. The dynamic characteristic analysis of motor operating mechanism, the test of mechanical operation characteristic, the design of motor structure and the application of practical engineering are studied in this paper. On the basis of this, a permanent magnet swing angle drive motor (Asymmetric Windings Permanent Magnet Swing AngleDriving Motor,AWPMSADM) with asymmetrical windings for the motor operating mechanism of high voltage circuit breaker (HV circuit breaker) is proposed. The main research work is as follows: (1) the motion coordination and load characteristics of the motor operating mechanism and vacuum circuit breaker are studied. The motion analysis model of the motor operating mechanism is established, and the motion correspondence between the insulation pull rod of the vacuum circuit breaker and the driving motor of the operating mechanism is deduced. The equivalent load torque and equivalent moment of inertia of vacuum circuit breaker to drive motor shaft side are calculated by analytical method. The range of angle variation, the changing trend of equivalent moment of inertia and the peak torque of load are obtained by analyzing the driving motor in the process of circuit breaker opening and closing. (2) the dynamic characteristics of motor driven by different rotor structures are studied. Field-path-motion coupling method is used to analyze and compare the mechanical motion characteristics and transient electromagnetic characteristics of four kinds of rotor-driven motors with embedded surface type, swallows-tail type, straight-line embedded type and outer V-embedded type, and four kinds of rotor-driven motors are analyzed and compared. The analysis results show that the speed characteristics, electromagnetic characteristics and mechanical reliability of the motor driven by the slot rotor structure of the swallow tail are relatively good. The virtual prototype model of the motor operating mechanism of vacuum circuit breaker is established and its dynamic characteristics are analyzed and the simulation model is tested and verified. (3) the mechanical operation characteristics of vacuum circuit breaker and motor operating mechanism are tested. An on-line test platform of vacuum circuit breaker and motor operating mechanism has been established based on the prototype of the driving motor with the slot rotor structure of the swallow tail. The no-load switching test, automatic reclosing test, opening and closing stability test and constant and interval speed regulation test of the motor operating mechanism and vacuum circuit breaker under different operating voltages were completed. The experimental results show that the speed characteristics of the motor driving vacuum circuit breaker meet the relevant requirements and the operation stability is good. The PWM voltage regulation method can effectively control the movement of the motor operating mechanism. (4) the overall design scheme and the start-up-braking asymmetrical winding structure of AWPMSADM are presented. The design flow of the main structural parameters of AWPMSADM is given, and the dynamic mechanical and electromagnetic characteristics of four rotor structures (AWPMSADM) are compared and analyzed, such as slot table mounting, piecewise embedded type 鈪
本文编号：2456645
[Abstract]:In order to solve the problems of complex motion system, high mechanical failure rate, poor motion control and low intelligent level of the high voltage circuit breaker operating mechanism, this paper takes the motor operating mechanism of 126kV single-break vacuum circuit breaker as the research object. The dynamic characteristic analysis of motor operating mechanism, the test of mechanical operation characteristic, the design of motor structure and the application of practical engineering are studied in this paper. On the basis of this, a permanent magnet swing angle drive motor (Asymmetric Windings Permanent Magnet Swing AngleDriving Motor,AWPMSADM) with asymmetrical windings for the motor operating mechanism of high voltage circuit breaker (HV circuit breaker) is proposed. The main research work is as follows: (1) the motion coordination and load characteristics of the motor operating mechanism and vacuum circuit breaker are studied. The motion analysis model of the motor operating mechanism is established, and the motion correspondence between the insulation pull rod of the vacuum circuit breaker and the driving motor of the operating mechanism is deduced. The equivalent load torque and equivalent moment of inertia of vacuum circuit breaker to drive motor shaft side are calculated by analytical method. The range of angle variation, the changing trend of equivalent moment of inertia and the peak torque of load are obtained by analyzing the driving motor in the process of circuit breaker opening and closing. (2) the dynamic characteristics of motor driven by different rotor structures are studied. Field-path-motion coupling method is used to analyze and compare the mechanical motion characteristics and transient electromagnetic characteristics of four kinds of rotor-driven motors with embedded surface type, swallows-tail type, straight-line embedded type and outer V-embedded type, and four kinds of rotor-driven motors are analyzed and compared. The analysis results show that the speed characteristics, electromagnetic characteristics and mechanical reliability of the motor driven by the slot rotor structure of the swallow tail are relatively good. The virtual prototype model of the motor operating mechanism of vacuum circuit breaker is established and its dynamic characteristics are analyzed and the simulation model is tested and verified. (3) the mechanical operation characteristics of vacuum circuit breaker and motor operating mechanism are tested. An on-line test platform of vacuum circuit breaker and motor operating mechanism has been established based on the prototype of the driving motor with the slot rotor structure of the swallow tail. The no-load switching test, automatic reclosing test, opening and closing stability test and constant and interval speed regulation test of the motor operating mechanism and vacuum circuit breaker under different operating voltages were completed. The experimental results show that the speed characteristics of the motor driving vacuum circuit breaker meet the relevant requirements and the operation stability is good. The PWM voltage regulation method can effectively control the movement of the motor operating mechanism. (4) the overall design scheme and the start-up-braking asymmetrical winding structure of AWPMSADM are presented. The design flow of the main structural parameters of AWPMSADM is given, and the dynamic mechanical and electromagnetic characteristics of four rotor structures (AWPMSADM) are compared and analyzed, such as slot table mounting, piecewise embedded type 鈪
本文编号：2456645
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