摘要
为了提高浮动式核电厂压水堆系统反应堆的功率控制性能,在孤岛运行状态实现对负荷大幅变化的快速跟踪,本文针对低负荷状态下的反应堆功率控制问题,综合利用模糊控制和PID控制的优势,基于功率偏差和温度偏差及其变化率建立了一种新控制策略,实现对PI控制器参数和棒速程序的自适应调整.对低负荷状态下负荷大幅变化工况的仿真实验结果表明,相较传统PI控制策略,新控制策略能够显著降低反应堆功率和冷却剂平均温度的超调量和调节时间,减少控制棒行程,提高反应堆的运行效率和安全性.
In this paper,to enhance the power control performance of pressurized water reactor(PWR)system in floating nuclear power plant and achieve rapid tracking of large load variations during islanded operation,a new nonlinear PI control strategy is proposed by leveraging the advantages of fuzzy control and PID control.Focusing on the power control of reactor at low loads,the new control strategy comprehensively considers the power deviation,temperature deviation and their rates of change,while fully utilizing the inherent self-stabilizing and self-regulating characteristics of reactor.A fuzzy control strategy is established,prioritizing power deviation when the deviation is large and balancing both the temperature and power deviations when the deviation is small.This control strategy enables adaptive adjustment of the PI controller parameters and rod speed programs.Through comparative simulation experiments of linear load-raising and load-reducing scenarios,the superior performance of the new control strategy is shown over the conventional PI control strategy used in practical engineering.Specifically,it decreases the overshoot,settling time and coolant average temperature,while further reducing the control rod movement.In summary,the proposed control strategy can help to enhance the reactor operational efficiency and safety with high feasibility.
作者
杨鹏程
陈智
尤恺
黄轲
何亮
郑艳秋
YANG Peng-Cheng;CHEN Zhi;YOU Kai;HUANG Ke;HE Liang;ZHENG Yan-Qiu(National Key Laboratory of Nuclear Reactor Technology,Nuclear Power Institute of China,Chengdu 610213,China)
出处
《四川大学学报(自然科学版)》
北大核心
2025年第4期1000-1005,共6页
Journal of Sichuan University(Natural Science Edition)
基金
中国核动力研究设计院稳定支持项目(WDZC-2023-05-03-01)。
