基于Matlab/Simulink的ADSR堆芯动态仿真实验设计

Design of Dynamic Simulation Experiment for ADSR Core Based on Matlab/Simulink

涉及核反应堆的实验具有高成本、高危险的特点,实现较为困难,因此开展核反应堆仿真实验设计是非常必要的。基于微扰理论和堆芯双输入双输出策略,利用Matlab/Simulink软件的状态空间模块,建立加速器驱动次临界反应堆堆芯动态仿真系统。并以CLEAR-IB次临界堆为例,设计实验内容并仿真。结果表明,堆芯进口温度阶跃上升2℃相比阶跃引入50 pcm的反应性对堆芯的影响小;由于堆芯燃料和冷却剂的反应性反馈,输出量堆芯的功率变化量和冷却剂平均温度变化量最终均达到稳定。实验的开设使学生深入理解核反应堆理论知识,也为"核反应堆运行仿真实验"课程的开设奠定了基础。

Experiments involving nuclear reactors have the characteristics of high cost,high risk,unreachable and irreversible,which cannot be realized in university laboatory.Therefore,it is necessary to develop nuclear reactor experiment design based on simulation.Based on perturbation theory and core dual-input and dual-output strategy,an ADS subcritical reactor core dynamic simulation system is established by using the state space module of Matlab/Simulink.Taking CLEAR-IB subcritical reactor as an example,the experiment contents are designed and simulated.The results show that Compared with the introducing 50 pcm step reactivity,the step increase of 2℃in core inlet temperature has less effect on the core,and the core power variation and the coolant average temperature variation finally tend to be stable.The experiment makes students understand nuclear reactor theory.It also laysthe foundation for the opening of the nuclear reactor operation simulation experiment.