基于GSA的水轮机调速系统非线性PID控制参数优化方法研究  

Nonlinear PID Parameter Optimization for Hydraulic Turbine Governing System Based on GSA

作　　者：周建中[1] 赵峰 李超顺[1] 

机构地区：[1]华中科技大学水电与数字化工程学院,湖北武汉430074 [2]河南国网宝泉抽水蓄能有限公司,河南新乡453003

出　　处：《水电能源科学》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)

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.

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 

分 类 号：TV734.4[水利工程—水利水电工程]