NUSTER-100电功率串级控制方法研究

Research on Cascade Control Method of Electric Power of NUSTER-100

热管冷却反应堆(简称热管堆)采用固态堆设计理念,通过热管非能动方式导出堆芯热量,具有结构简单紧凑、安全性高、噪音低、工作时间长的优势。本文以100 kW静默式热管堆(NUSTER-100)为研究对象,基于MATLAB/Simulink平台搭建了非线性动态模型,根据微扰理论获得了传递函数模型。基于动态特性分析,提出电功率串级控制方法,其中内环为核功率调节,外环为电功率控制。以反应性与核功率、核功率与电功率之间的传递函数为基础,设计了电功率串级控制系统,并采用增益调度解决其非线性问题。采用典型工况进行控制性能仿真验证,仿真结果表明,所设计的串级控制系统满足控制性能要求,可以实现反应堆的安全可靠运行。

The heat pipe cooled reactor(hereinafter referred to as heat pipe reactor)has the design concept of solid-state reactor,and the heat is passively transferred out of the core through heat pipes.It has the advantages of simple structure,high safety,low noise,compact structure and long working time.In this paper,a 100 kW silent heat pipe reactor(NUSTER-100)is taken as the research object,and the nonlinear dynamic model is built based on MATLAB/Simulink platform.The transfer function model is obtained by linearization based on perturbation theory.Based on the analysis of dynamic characteristics,a cascade control method of electric power is proposed,in which the inner loop is the core power regulation and the outer loop is the electric power control.Based on the transfer function between reactivity and nuclear power,and the transfer function between nuclear power and electric power,an electric power cascade control system is designed,and its nonlinear problem is solved by gain scheduling.The simulation results show that the cascade control system can meet the requirements of control performance and realize the safe and reliable operation of nuclear reactor.