基于PRONY辨识的附加最优次同步阻尼控制器设计  

Design of Optimal Supplementary Sub-Synchronous Damping Controller Based on Prony Method

作　　者：付伟[1] 李兴源[1] 洪潮 杨煜 

机构地区：[1]四川大学电气信息学院,成都610065 [2]南方电网公司,广州510623

出　　处：《电力系统及其自动化学报》2008年第5期10-15,共6页Proceedings of the CSU-EPSA

基　　金：国家重点基础研究专项经费项目(2004CB217907);国家自然科学基金项目(50595412;50577044);南方电网技术研究中心项目

摘　　要：在电力系统的次同步振荡分析当中,以往提出的基于系统线性化方程求解的小扰动分析方法极易形成"维数灾",在实际复杂系统中的应用非常困难。利用Prony方法来辨识系统模型,较好的解决了电力大系统建模困难的问题。在实际系统中,不是所有状态变量都能采取利用,所以采用了状态观测器来重构系统状态,并在此基础上,利用线性最优控制理论设计了附加次同步阻尼控制器。在南方电网的实际模型中,对该控制器进行了时域仿真验证,证明了该控制的有效性和快速性。In the analysis of Sub synchronous oscillation in power system, the small disturbance method, which is based on the linear equations of the system, is very difficultly applied to an actual complex system, because of dimension calamity＇. In this paper, Prony method is applied to identify system model, which is a better solution of the big power system modeling problem. In the real systems, not all state variables are to be measured, so it is to reconstruct system status by the State-Oberver, and an additional damping controller is designed by linear optimal control theory. In the practical model of southern power system, the time domain simulation for the controller proves it the effectiveness and the rapidity.

关 键 词：次同步振荡 PRONY辨识 线性最优 附加次同步阻尼控制 时域仿真 

分 类 号：TM712[电气工程—电力系统及自动化] TM721.1