超临界火电机组主蒸汽温度控制算法研究  

Research on Temperature Control Algorithm of Main Steam in Supercritical Power Plant

作　　者：刘备 崔承刚 李炳楠 郭为民 LIU Bei;CUI Cheng-gang;LI Bing-nan;GUO Wei-min(College of Automation Engineering,Shanghai University of Electric Power,Shanghai,China,200000;Rundian Energy Science and Technology Co.,Ltd.,Zhengzhou,Henan,China,450052)

机构地区：[1]上海电力大学自动化工程学院,上海200000 [2]润电能源科学技术有限公司,河南郑州450052

出　　处：《热能动力工程》2019年第10期77-83,共7页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金(51607111);上海市科委地方院校能力建设项目(15160500800)~~

摘　　要：针对火电机组主蒸汽温度控制系统的大惯性和大时滞特性,将线性自抗扰控制、经典串级PID控制、微分先行控制策略、史密斯(Smith)预估控制等几种温度控制方案的控制效果进行仿真对比。仿真结果表明:经典串级PID控制策略的控制效果差;微分先行(D-PI)控制策略的响应速度快,但鲁棒性差;Smith预估算法能够小幅改善主控制器的控制效果,但效果不够好;线性自抗扰控制策略的控制效果较好、抗干扰能力较强、鲁棒性较强。在面对主蒸汽温度控制问题时,线性自抗扰控制是一种能够替代传统控制策略的合理、有效的选择。For such characteristics as large inertia and large time delay in main stream temperature control system of thermal plant,the control effects are compared for linear active disturbance rejection controller,classic cascade PID controller,differential preemption control strategy and smith predictor.The result shows that,for the classic cascade PID controller,the control effect is poor.For the differential preemption(D-PI) control strategy,it has fast response,while its robustness is poor.For the Smith predictor,the control effect of main controller is slightly improved,but it is not good enough.For linear active disturbance rejection controller,the control effect is better,and its anti-interference ability and robustness are stronger than other methods.Linear active disturbance rejection controller is a reasonable and effective alternative to the traditional control strategies for the main steam temperature control problem.

关 键 词：主蒸汽温度 线性自抗扰控制 PID 微分先行 Smith预估 扰动试验 鲁棒性 

分 类 号：TK323[动力工程及工程热物理—热能工程]