反应堆功率与冷却剂流量协调控制研究

Research on Reactor Power and Coolant Flow Coordinated Control

摘要: 为优化反应堆冷却剂流量控制，提出了根据蒸发器蒸汽压力适时地连续改变反应堆冷却剂流量，以维持蒸发器蒸汽压力基本不变的控制策略。建立了被控对象的常微分数学模型，并根据当前实际控制工程领域仍然广泛采用传统PID控制的现状，设计了反应堆功率控制器和冷却剂泵转速控制器，并对其进行了详细阐释。根据蒸汽阀门开度阶跃变化整个闭环系统数值计算结果，确定了控制器参数，计算结果表明：当功率控制与流量控制同时投入，冷却剂流量随动变化控制明显优于冷却剂流量固定不变的运行方式。

Abstract: In order to optimize the control of reactor coolant flow, a control strategy is presented. The reactor coolant flow can be changed on the basis of the steam pressure of evaporator in order to keep the steam pressure of evaporator steady. The ordinary differential mathematical model of controlled system is built. Traditional PID control is widely being used in the actual control engineering area, and the reactor power controller and the coolant pump speed controller are designed according to the current situation. These controllers are also expounded in detail. Controller parameters are ascertained according to the numerical calculation results of the whole closed-loop system when the aperture of steam valve step changes. The calculation results show that when the power control and flow control are input at the same time, the coolant flow follow-up changes control is superior to the coolant flow stay invariant.