高压断路器电机操动机构控制方法研究

Nonlinear Self-correction Control Method for Motor Actuator of High Voltage Circuit Breaker

针对高压断路器电机操动机构控制系统的分散、时变等控制特点,提出一种基于非线性预测自校正智能控制方法。针对时变惯量、时变负荷,分析新型断路器的结构特点,采用机械结构动力学模型建模方法,并用递推公式建立动触头的运动方程。针对伺服电机操动机构,采用智能控制方法,建立电机操动机构自适应调节断路器分合闸速度控制模型,可以提高控制系统的可控性。仿真结果表明:电机操动机构应用智能控制方法,能够完成断路器分合闸速度调节的智能化;该方法可以实现触头速度根据电力系统工况自适应调节分合闸速度。

Aiming at the dispersion and time varying control characteristics of the control system of the high voltage circuit breaker motor actuator,an intelligent control method based on nonlinear prediction was proposed. The time-varying inertia and the time-varying load was utilized for analyzing the structural characteristics. And the motion equation of the dynamic contact was established with the recursion formula by adopting the dynamic model of the mechanical structure. Aiming at the servomotor actuator,the intelligent controller method was used to establish an adaptive regulating circuit breaker breaking speed control model to improve the control ability of the control system. The simulation results showthat the intelligent control method of the motor actuator is able to complete the intelligent control speed adjustment of the circuit breaker and realize the speed of the contact speed according to the operating condition of the power system.