TMSR核功率控制系统的PID设计与仿真  

PID design and simulation of TMSR nuclear power control system

作　　者：汪全全[1,2,3] 尹聪聪[1,2,3] 孙雪静[1,3] 韩利峰[1,3] 陈永忠[1,3] 李勇平[1,3] 刘卫[1,3] 

机构地区：[1]中国科学院上海应用物理研究所嘉定园区,上海201800 [2]中国科学院大学,北京100049 [3]中国科学院核辐射与核能技术重点实验室,上海201800

出　　处：《核技术》2015年第2期56-62,共7页Nuclear Techniques

基　　金：中国科学院战略先导科技专项(No.XDA02010300)资助

摘　　要：功率控制系统(Power Control System,PCS)是反应堆控制系统(Reactor Control System,RCS)的重要组成部分,它完成功率提升、功率保持与功率调节的作用。在钍基熔盐堆(Thorium Molten Salt Reactor,TMSR)核能系统固态堆设计方案中,功率控制器根据实测功率与设定功率值之间的偏差和偏差的变化趋势,按照经典的比例-积分-微分(Proportional Integral Derivative,PID)控制算法,给出调节控制棒的运动距离和运动方向等信号。PCS的PID算法设计与基于反应堆中子物理、热工及控制棒的传动性能构成的闭环控制系统的特性有关,其不同参数的确定与系统的静态和动态性能指标的要求相对应。本文从控制的角度出发,在已有的控制棒样机中设计的棒控棒位系统及相关中子物理的基础上对PCS的PID算法进行多层次仿真与参数分析,并对系统的可控性与可测性进行分析验证。分析及仿真结果表明两种控制模型下的系统均是完全可控及完全可测的,在合适的PID参数集下均能体现响应的快速性及系统的良好鲁棒性和抗干扰能力,具有实际的应用意义。Background： Power Control System （PCS） is one of the most significant systems in Reactor Control System （RCS）. PCS accomplishes functions such as power lifting, power maintain and power regulation. Purpose： In the solid reactor design scheme in Thorium-based Molten-Salt Reactor （TMSR） nuclear energy system, power controller is designed to generate signals for control rod moving direction and distance according to the deviation and deviation change trend between the measurement power value and preset value with classical Proportional Integral Derivative （PID） control algorithm. Methods： The PID design of PCS has a relationship with the characteristics of closed control loop which is constructed by reactor neutron physics, thermodynamics and transmission performance of control rods. Different design parameters determine various control system steady and dynamic performance. It is important and necessary to give a parameter set that can provide required characteristics for the control models. With the perspective of control engineering, this paper gives simulation and parameter analysis of PID algorithm of PCS on the basis of control rod control system and positioning system that has already been constructed and fundamentals of neutron physics. Apart from this, the controllable and measurable characteristics of two control models （a traditional control model and an improved multiple-loop control model） are investigated. Results： The system controllable and measurable characteristics analysis from transfer fimction of two control model showed that our control objects were completely controlled and completely measured in any state. The PID design and the simulation results demonstrated that the two control model both achieved satisfactory tracking performance and robustness with appropriate control parameters. Conclusion： In fact, compared with the traditional model, the improved control model which is of practical significance has better dynamic characteristics, especially in working aga

关 键 词：钍基熔盐堆 功率控制系统 PID 棒控棒位系统 

分 类 号：TL362.5[核科学技术—核技术及应用]