基于最优特征值配置理论设计的电力系统励磁控制器

Excitation Controller for Power System based on Optimal Eigenvalue Assignment

提出了基于最优特征值配置原理设计最优励磁控制器的方法。首先建立了单机—无穷大系统中发电机组的线性化模型 ,在此基础上推导出了系统的状态空间描述并按最优特征值配置的原理设计了状态反馈矩阵。计算机仿真结果表明按特征值最优配置理论设计的控制器 ,不仅能使性能指标达到最优 。

In this paper, a method for designing optimal excitation controller for power system based on optimal eigenvalue assignment is presented. Firstly, a linearized model of a generator system in a Single Machine Infinite Bus (SMIB) System is developed on the basis of which the calculation of the system state space descriptions is derived and the state feedback matrix is designed in accordance with the principle of the optimal eigenvalue assignment. Computer simulation shows that the excitation controller designed in accordance with the principle of optimal eigenvalue assignment not only optimizes a quadratic performance index but also avoids selecting the state weight matrix designed based on the linear quadratic optimal control theory.