1500MW驻波堆控制系统仿真研究

Simulation of the Control System of 1500MWt SWR

本文以中国原子能科学研究院预先设计研究的热功率为1 500MW的驻波堆为模型,以Matlab的Simulink子软件包为仿真平台,通过理论分析、推导,建立了驻波堆各主要部件的模型。包括:堆芯物理模型、堆芯热工模型、冷池模型、热池模型、栅板联箱模型、中间热交换器模型、管道模型、泵模型以及蒸汽发生器模型;同时建立了以步进电机作为驱动电机的控制棒驱动机构和功率调节系统模型,并基于这些模型构建了1 500MW驻波堆的仿真模型。通过调研国外现有快堆的控制运行方案,并结合驻波堆自身特点,文中提出了1 500MW驻波堆适合采用"堆跟机"的运行方案,分别给系统添加反应性扰动、一回路流量扰动、二回路流量扰动以及负荷扰动,对提出的"堆跟机"运行方案进行仿真分析,仿真结果表明1 500MW驻波堆采用"堆跟机"方案时各参数满足理论要求,反应堆运行情况良好,此方案可作为1 500MW驻波堆的运行方案。

This paper is based on the 1 500 MWt standing-wave reactor which was designed by CIAE and simulates with Matlab Simulink. Through theoretical research and investigation, the mathematic models of the main systems are established, including reactor dynamic physics model, reactor thermal model, cold pool model, hot pool model, distribution header model, intermediate heat exchanger model, pump model, pipe model and steam generator model. And it sets up the control rod drive mechanism and model of power regulation system with stepper motor. The model of 1 500 MWt standing-wave reactor is established according to the above models. Taking the fast reactor operation plans of other countriesand the characteristics of standing-wave reactor into account, it develops the operation plan, i.e. reactor following the turbine load. While it simulates the operation plan as soon as disturbances are added, such as disturbance of reactivity, disturbance of flow in the primary loop, disturbance of flow in the secondary loop, and disturbance of load, and obtains operation curves. It seems that all the parameters fit theoratical requirements and the reactor plays well with all kind of disturbances which are shown in the operation curves. So, this operation plan could be used for 1 500 MWt standing wave reactor.