基于自抗扰控制技术的发电机励磁控制系统

New Synchronous Generator Excitation Controller Based on ADRC

采用合理的发电机励磁控制方案对改善电力系统小扰动及大扰动稳定性有着重要的作用。介绍了自抗扰控制器的原理;分析了传统的PID励磁控制器无法实用的原因;针对其固有的缺陷,提出了一种基于自抗扰控制技术的新型励磁控制策略,并分析了其动态性能较PID控制器优异的原因。仿真结果表明,所提出的励磁控制策略能快速抑制发电机端电压的大幅振荡,有效地改善系统的动态品质,提高系统的稳定水平。

A reasonable generator excitation control program is studied to improve the power system disturbances stability. The principle of active disturbance rejection control （ADRC） is introduced. And the reasons which cause the traditional PID excitation controller being not practical is analyzed. An excitation control strategy based on ADRC in allusion is presented to inherent limitation of PID controller. The reasons why ADRC have better dynamic performance than the PID controller are analyzed. The simulation results show that the excitation control strategy based on ADRC can restrain the acute surge of generator terminal voltage quickly, and improve the dynamic quality and stability level of the power system effectively.