反应堆功率控制半实物仿真系统

Modeling and Simulating of Power Regulating System of a Research Reactor

对于新型研究堆,其功率自动调节系统的设计缺乏基本的设计参数和依据,需要通过半实物仿真试验对功率自动控制系统的控制参数和性能进行研究。半实物仿真系统是一个半实物的反应堆闭环控制系统。它根据当前功率与给定功率的偏差执行功率调节算法,输出步进电机控制信号,使步进电机正、反向转动,以此达到功率调节作用。通过在半实物仿真系统上进行的各种控制方式的闭环运行试验得到结论:需根据不同的棒位区域取不同的控制器参数,才能够较好地满足预定的控制指标和性能要求,为新型研究堆功率自动调节系统的设计及闭环运行提供理论依据和技术基础。

As a new type of research reactor, no experience can be used for the design and implementation of the power regulating system. So it is necessary to determine the algorithm, parameters and its dynamic characteristics through modeling and simulating for reactor power regulating system. Modeling and simulating system is a simulated close-loop control system. ＂The power regulating system implements arithmetic of power regulating on the basis of difference between current and given power, then outputs stepping motor controlling signal in order to regulate power. Different control methods with close-loop control system were experimented on the modeling and simulating system. The results indicate that the given control target and control performance are fulfilled preferably by different rod position adopting different controller parameters. The study and its results would provide theoretical and methodological basis for the design and implementation of the power regulating system of the new type nuclear reactor.