反应堆关键电动阀门电机低电压穿越技术研究

Research on Low Voltage Crossing Technology of Reactor Key Electric Valve Motor

针对传统反应堆阀门控制方式在电网电压出现跌落情况下开关阀动作变慢,无法满足系统安全性要求的问题,研究了一种采用电压闭环反馈弱磁补偿的阀门电机低电压穿越技术。在电网电压出现跌落时,对阀门电机进行电压补偿弱磁控制,使得阀门在低电压情况下能够维持转速稳定,在规定时间内完成开关阀动作。理论分析和实验证明该控制策略的有效性,能够在电压跌落的情况下稳定阀门电机转速。

In view of the problem that the traditional reactor valve control mode is slowed down when the grid voltage drops,the system safety requirements cannot be met,and a low voltage crossing technology using closed-loop feedback weak magnetic compensation for valve motor was studied.When the grid voltage drops,the valve motor is voltage compensated weak magnetic control,so that the valve can maintain the speed stable under low voltage conditions,complete the on-off valve action within the specified time.Theoretical analysis and experiments show that the technology can stabilize the valve motor speed under the condition of voltage drop,and realize the low voltage crossing of the key valve motor of the reactor.