基于输出反馈和区域极点配置的电力系统阻尼控制器研究  

Research on Power System Damping Controllers Based on Output Feedback and Region Poles Assignment

作　　者：马燕峰[1] 赵书强[1] 顾雪平[1] 

机构地区：[1]华北电力大学电气与电子工程学院,保定071003

出　　处：《电工技术学报》2011年第4期175-184,共10页Transactions of China Electrotechnical Society

基　　金：中央高校基本科研业务费专项资金(09MG07);河北省自然科学基金(E2010001693和E2011502014)资助项目

摘　　要：提出了利用区域极点配置法设计电力系统阻尼控制器,以实现低频振荡的近似均匀阻尼控制。首先分析了电力系统的阻尼特性和阻尼控制器抑制低频振荡的本质,得出实现均匀阻尼控制的条件,然后根据参与因子的大小,确定控制器的安装位置,最后利用均匀阻尼思想及广域测量信号,将低频振荡的控制转化为发电机阻尼控制器的区域极点配置问题。由于在设计的过程中考虑了所有控制器对振荡模式的影响,因此达到了多机系统的协调控制,避免了控制器对其他振荡模式阻尼的过度削弱。以IEEE 4机11节点系统为例,在多运行方式下与传统电力系统稳定器进行了仿真对比分析,说明了此方法的有效性和鲁棒性,为电力系统低频振荡的协调控制提供了新思路。Based on the characteristics of power systems with uniform damping,the paper puts forward the design method of power system damping controllers which makes use of uniform damping thought and region pole assignment method to realize uniform damping control of low-frequency oscillation（LFO）.First,the characteristics of power systems with uniform damping and the essence of damping LFO of controllers are analyzed,then considering the participate factors and the obtain of wide-area signal,input signals and location of controllers are chosen.Finally according to the damping of power system,feasible region of pole assignment is chosen and the paper converts the damping of LFO into the pole assignment problem of multi-machine damping controllers.Because the control goal is to make every mode with the same damping,which avoids decreasing damping of other modes in excess,the coordination of controllers is realized.At last,take the IEEE 4-machine 11-node system as example,the simulation of different operation modes indicates that the control method is valid and robust.The method puts forward a new thought for restraining LFO.

关 键 词：低频振荡 均匀阻尼 区域极点配置 协调控制 线性矩阵不等式 电力系统稳定器 

分 类 号：TM712[电气工程—电力系统及自动化]