摘要
发电机励磁系统对远距离输电系统的稳定性有很大影响。本文基于单机无穷大系统的线性化模型,结合线性最优控制理论建立了最优励磁控制器用的系统状态方程,求出线性最优励磁控制电力系统稳定器,用MATLAB仿真软件在单机无穷大系统两种不同的运行状态下进行仿真,仿真结果表明无论是小扰动还是大扰动,最优励磁控制都具备了良好的电压性能,且给出了比AVR+PSS更强的阻尼,表现出良好的动态特性。
The influence of generator excitation system on stability of long-distance transmission system is great. Based on the linear model of single-machine infinite-bus power system ;rod the theoretic of Linear Optimal Control, a set of state space equations by Linear Optimal Excitation Controller＂ are built. Then the optimal power system stabilizer is obtained. The MATLAB simulation results on two oPeration points of single-machine infinite-bus system. The result indicates that liner optimal excitation controller has more Preferable control Performance, and compare with AVR＋PSS excitation controller has well dynamic Performance,too.
出处
《变频器世界》
2007年第7期43-45,66,共4页
The World of Inverters
关键词
线性最优理论
建模
线性最优励磁控制器
仿真
Linear optimal theory Modeling Linear optimal excitation controller Simulation
