水轮发电机组励磁与水门协调控制设计  

Coordinated Control for the Excitation and Governing of Hydroturbine Generator Set

作　　者：汪旎[1] 刘辉[1] 陈武晖[1] 孙欣[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《电工技术学报》2013年第7期262-268,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51107054);江苏大学高级专业人才科研启动基金(09JDG008;10JDG085)资助项目

摘　　要：针对水轮发电机组的励磁与水门协调控制问题,运用目标全息反馈法,进行非线性控制设计。首先,以微分几何法为例,分析了目前水轮发电机组控制设计中存在的问题,并阐述其存在该问题的根本原因。其次,将水轮机及引水系统的二阶模型,用状态空间描述,进行零动态稳定性分析,以便将水轮发电机组控制系统降阶处理。然后,在分析水轮发电机组控制需求的基础上,构建控制目标方程,进行目标全息反馈非线性控制设计,提出水轮发电机组励磁与水门非线性协调控制方案,确保水轮发电机组的电压调节特性和功率调节特性。最后,通过仿真验证所提方案的有效性。The coordinated control problem of hydroturbine generator excitation and governing is discussed in this paper based on＇nonlinear control with objective holographic feedbacks（NCOHF）. Firstly, existing coordinated control based on differential geometric control（DGC） is introduced as an example to analyze the disadvantages of hydroturbine generator control. Secondly, second-order mathematical model（SMM） of the turbine and water diversion system is expressed with the state-space equations. Besides, the zero-dynamic stability of SMM is analyzed for the purpose of simplifying the hydroturbine generator control system. Thirdly, multi-objective equations are built on the basis of the control requirements of hydroturbine generator set. Furthermore, coordinated control with objective holographic feedbacks（CCOHF） is proposed to achieve both voltage regulation and power regulation for the excitation and governor control system of hydroturbine generator set when NCOHF is applied. Lastly, simulations demonstrate the effectiveness of the method proposed in this paper.

关 键 词：水轮发电机组 励磁与水门控制 目标全息反馈非线性控制方法 电压调节 有功功率调节 

分 类 号：TM622[电气工程—电力系统及自动化]