具有扇形执行器的多机电力系统气门开度的时滞无关镇定(英文)  

Delay-independent stabilization for steam valve opening of multi-machine power system with sector actuator

作　　者：孙妙平[1] 年晓红[1] 潘欢[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410004

出　　处：《控制理论与应用》2012年第12期1661-1668,共8页Control Theory & Applications

基　　金：supported by the National Science Foundation of China(No.61075065,60774045,U1134108);the Ph.D. Programs Foundation of Ministry of Education of China(No.20110162110041)

摘　　要：本文研究了具有扇形执行器的多机电力系统气门开度的时滞无关分散控制器和鲁棒分散控制器的设计问题.首先利用三角变换把非线性关联函数变换为子系统状态变量的二次有界不等式形式,然后基于Lyapunov稳定性理论,推导出闭环多机电力系统及其参数不确定系统渐近稳定的线性矩阵不等式(LMI)充分条件,最后以两机无穷大母线系统为例进行了仿真分析,验证了所提方法的有效性.A time-independent decentralized controller and a robust decentralized controller have been developed for the steam valve opening of multi-machine power system with sector saturating actuator.The nonlinear interconnected function is first converted by trigonometric transformation into quadratically bounded inequalities in the subsystem states;and then,linear matrix inequality（LMI） sufficient conditions for the closed-loop multi-machine power system and uncertain system to be asymptomatically stable are derived based on Lyapunov stability theory.A two-machine infinite-bus system is considered as an application example.Simulation results demonstrate the effectiveness of the proposed method.

关 键 词：多机电力系统 气门开度 执行器饱和 时滞无关 线性矩阵不等式 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]