同步发电机线性多变量与PID结合的励磁控制

Linear multi-variable and PID excitation control of synchronous generator

提出一种用于同步发电机新型励磁控制方法———PID+线性多变量反馈励磁控制器.该控制器将PID的调节输出和线性多变量反馈励磁控制器的输出进行综合.针对单机无穷大系统运用微分几何精确反馈线性化理论进行线性多变量励磁控制器的设计,设计方法简单.Matlab/Simulink仿真结果表明该励磁控制器在提高电力系统的稳定性以及稳定机端电压方面比线性多变量励磁控制器和常规PID控制器更有效.

A new synchronous generator excitation controller -PID ＋ linear multi-variable excitation controller is provided. The controller ties the output of PID with the output of linear multi-variable excitation controller. Exact feedback linearization theory of differential geometry is applied to the design of linear multi-variable excitation controller for the single-machine infinite system. The design method provided is very simple. Matlab/Simulink remains that excitation controller provided is more effective for the improvement of power system stability and the stability of generator terminal voltage than the linear multivarible excitation controller and traditional PID controller.