蒸汽发生器液位控制系统分区控制策略研究

Research on Zoning Control Strategy of Steam Generator Level Control System

核电厂在降功率运行过程中会经历复杂的工况,这一过程会出现蒸汽发生器液位和给水流量的不稳定。本文通过对蒸汽发生器液位控制系统进行仿真分析,研究主要PID控制器的运行特性。在此基础上,提出分区控制策略,通过在不同功率水平下引入不同的整定参数,研究该策略的合理性和可行性。

During reduction operation,the reactor power plant will go through a complicated process,and the level of steam generator and feedwater flow will be unstable.The thesis investigates the operating characteristics of PID controller through simulation and analysis of steam generator level control system.On the basis of simulation,hierarchical control strategy,which uses different setting parameters for different power stage,is provided for reasonability and feasibility research.