加拿大超临界水冷堆的多变量鲁棒控制研究

Multivariable robust control research of the Canadian SCWR

为了处理加拿大超临界水冷堆的蒸汽温度、反应堆功率和主蒸汽压力之间的强耦合性,特别是蒸汽温度对反应堆功率扰动具有极高敏感性的问题,以及控制系统设计过程中所引入不确定性因素,对系统模型进行不确定性分析并得到3种不确定性量,然后在此基础上采用μ综合方法得到多变量鲁棒控制器。通过前馈系统的扰动补偿特征和对开环系统的增益调整方法分析得到系统的前馈控制部分,进一步提高系统的性能响应。通过和传统控制器的仿真对比表明:所设计的多变量鲁棒控制器能在系统不确定性条件下实现对系统的稳定控制,控制性能满足设计要求。

In order to deal with the strong couplings among the steam temperature, reactor power and main steam pressure, especially the sensibility of steam temperature to the reactor power disturbances in Canadian supercritical water-cooled reactor （Canadian SCWR）, and uncertainty factors introduced in the process of control system design, in this paper, the uncertainty of the system model was analyzed and three uncertainty sources were obtained. The μ- synthesis method was used to design the multivariable robust controller. The feedforward control was obtained by analysis of the disturbance compensation characteristics and gain adjustment of the open loop system, to further improve performance of the control system. Through simulation and comparisons with the traditional control systems, it is concluded that the multivariable robust controller can realize the stable control of the Canadian SCWR under the system uncertainties and the control requirements satisfied.