水轮机微机调速器控制策略分析与研究  

An Analysis and Study of Turbine Governor Control Strategy

作　　者：陆桂明[1,2] 孙美凤[2] 沈祖诒[1] 

机构地区：[1]河海大学水利水电工程学院,南京210098 [2]华北水利水电学院,郑州450011

出　　处：《中国农村水利水电》2010年第7期134-137,140,共5页China Rural Water and Hydropower

摘　　要：水轮机调速器分为机械液压型、电气液压型和微机调速器,前两种只能采用常规PI或PID控制策略,难以满足和提高大型水轮机组或孤立电网带负荷机组调节系统的控制品质和要求,因此变参数PID调节、自适应控制、模糊控制等复杂和更高级的控制策略只能依靠计算机来完成,由于水轮机调节系统是一个具有非线性、时变性的非最小相位系统,采用线性理论分析和设计的调速器无法得到满意的结果,因此对微机调速器的结构和控制策略进行对比分析,从中找出较合适的控制结构和策略。Hydro-turbine governors are devided into mechanical-hydraulic,electric hydraulic and microcomputer.The first two models can only use conventional PI or PID control strategy,it is difficult to meet the quality control requirements in large hydro-turbine generator sets or conditions in isolated power grids,thus the parameters-varying PID control,adaptive control,fuzzy control and more complex or higher control strategy can only rely on the microcomputer governors.Because hydro-turbine generator set is a non-linear,time-varying and non-minimum phase system,the governor can not get satisfactory results by using linear theory analysis and design.In this paper the structure and control strategies of microcomputer governor are compared and analyzed to find more suitable control structures and strategies.

关 键 词：水轮机 微机调速器 控制策略 非线性 智能控制 

分 类 号：TK730.4[交通运输工程—轮机工程]