摘要
水轮机调速系统是水电机组的核心控制系统,调速器控制参数优化与机组的安全稳定高效运行直接相关。针对现有研究的不足,建立了非线性调速系统模型,采用综合特性曲线描述水轮机模型,采用弹性水击模型描述压力引水系统特性;在此基础上,结合引力搜索算法(GSA)的优点,提出了基于GSA的非线性PID控制参数优化方法,并以我国某实际水电机组数据建立仿真模型,比较了不同优化方法和不同PID控制规律的组合控制效果。结果表明,基于GSA的水轮机调速系统非线性PID控制参数优化方法,能有效提高孤网运行条件下机组的动态品质。
Hydraulic turbine governing system （HTGS） is an important control system of hydroelectric generating u-nit （HGU）, and the control parameter optimization of HTGS is closely related to the stability, efficiency and safety ofHGU. In this paper, nonlinear PID control optimization of HTGS is studied. A nonlinear model of HTGS is proposed, inwhich hydraulic turbine is described by model characteristic curves, and penstock is described by elastic water hammer.And then, a nonlinear PID parameter optimization method based on gravitational search algorithm （GSA） is proposed fornonlinear HTGS. A simulation model based on the data of a real HGU is built and comparative experiments of control pa-rameter optimization are executed on it. Experimental results show that the proposed GSA-NPID is effective in promotingcontrol quality of HGU.
出处
《水电能源科学》
北大核心
2014年第12期127-130,共4页
Water Resources and Power
基金
国家自然科学基金项目(51079057
51409076)
关键词
非线性水轮机调速系统
综合特性曲线
弹性水击模型
引力搜索算法
PID控制
非线性PID控制
nonlinear hydraulic turbine governing system
model characteristic curves
elastic water hammer
gravitational search algorithm
PID control
nonlinear PID control
