摘要
主蒸汽压力是火电厂热工自动化中非常重要的参数,但是具有大惯性、纯迟延等特性,是一个比较难调的对象。基于主蒸汽压力降阶近似模型和二次型最优控制原理,给出了主蒸汽压力的LQ次优调节策略。实验研究表明:该策略调节效果令人满意,非常适用于变压运行的机组。
Main steam pressure is both one of important parameters and a big-lagged and big-inertial object in thermal process automation of power plant, which can't be easily regulated. Based on degraded and approximate model of main steam pressure and linear quadratic optimal control theory, the LQ sub-optimal regulation strategy is presented. Simulation results show that it works well and is fit for changeful-pressure unit.Figs 7 and refs 5.
出处
《动力工程》
CSCD
北大核心
2004年第3期375-378,共4页
Power Engineering
关键词
自动控制技术
火电厂
主蒸汽压力
LQ次优调节策略
降阶近似模型
二次型最优控制原理
autocontrol technique
power plant
main steam pressure
LQ sub-optimal regulation strategy
degraded and approximate model
linear quadratic optimal control theory
