500MW单元机组协调控制系统的非线性度分析  

Degree of Nonlinearity Analysis on Coordinated Control System of 500 MW Unit

作　　者：任娟娟[1] 胡勇[2] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080 [2]华北电力大学,北京102206

出　　处：《广东电力》2012年第12期51-56,共6页Guangdong Electric Power

基　　金：国家高技术研究发展计划863项目(2007AA041104)

摘　　要：为分析锅炉-汽轮机系统的非线性对控制系统的影响,提出基于间隙度量的非线性度概念,将其应用于分析500 MW单元机组协调控制系统的动态。采用简单的内模比例积分微分控制、V-规范型多变量内模控制设计了多变量内模控制器,并以非线性模型为仿真对象进行大范围升降实验。结果表明该控制器可以克服模型工作点变化所带来的非线性问题,同时又可以保证控制回路间的有效解耦。For analyzing affection on control system of boiler-steam turbine system by nonlinearity, this paper presents non- linearity conception based on gap metric measuring and applies it in analyzing trends of coordinated control system of 500 MW unit. It takes simple internal model proportional-integral-derivative control and V-standard type multivariable internal model control for designing multivariable internal model controller and proceeds extensive promotion and demotion test for simulating objects based on nonlinearity model. The result shows that this controller can overcome nonlinearity problems caused by changes of model working points and ensure effective decoupling of control circuits.

关 键 词：协调控制系统 非线性度 间隙测度 内模控制 

分 类 号：TM921.5[电气工程—电力电子与电力传动]