The motor-driven operating device of high-voltage circuit breakers improves the reliability and controllability of circuit breaker operation.A set of motor-driven operating device for 126 kV vacuum cir-cuit breaker was designed.Based on the driving motor torque and speed requirements determined by the kinetic analysis of the actuator,a finite angle permanent magnet brushless motor design was proposed,and a prototype was developed for inline testing to complete the action requirement test.On this basis,the segmented torque control strategy was designed to combine the output torque requirements of the drive motor to divide the motion process of the operating device into four stages,and dynamically adjust the output torque of the motor in each stage from the perspective of reducing contact collision,avoiding pre-arcing and improving the working reliability of the circuit breaker.The results show that the developed drive motor with segmental torque control strategy can optimize the motion process and improve the relia-bility of the operating device and promote the intelligent operation of the circuit breaker,while ensuring the interrupter's requirements for the operating time and speed of the operating device.
关键词
高压断路器/操动机构/驱动电机/分段转矩控制/智能化操作/试验验证
Key words
high voltage circuit breaker/operating device/drive motor/segmental torque control/intelli-gent operation/test verification
维普
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