直流锅炉单元机组协调控制系统的研究与设计  

Research and Design on the Coordinate Control System of a Once-through Boiler Unit

作　　者：秦志明[1] 张栾英[1] 谷俊杰[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,河北保定071003

出　　处：《动力工程学报》2016年第1期16-21,29,共7页Journal of Chinese Society of Power Engineering

基　　金：中央高校基本科研业务费资助项目(2015MS110)

摘　　要：以1 000 MW超超临界直流锅炉单元机组为研究对象,通过机理分析建立其协调控制系统的非线性模型,利用小偏差方法对模型进行线性化,设计相应的多变量解耦补偿器,实现了输入、输出变量的全解耦,建立了三输入三输出的协调控制系统,并通过煤质和给水比焓扰动以及升降负荷的仿真实验对协调控制系统进行了验证.结果表明:所提出的协调控制系统具有良好的控制性能.Taking the 1 000 MW ultra supercritical once-through boiler unit as an object of study, a nonlin- ear model was built up for the coordinate control system （CCS） through mechanism analysis, which was linearized based on small deviation method, while corresponding multivariable decoupling controller was designed to achieve full decoupling of the input and output variables, thus the three-input-three-output co- ordinated control system was finally established and verified under disturbance of coal quality and specific enthalpy of feed water during load-up and load-down process. Results show that the CCS proposed has good control performance.

关 键 词：直流锅炉 协调控制 建模 线性化 解耦 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]