同时改善系统稳定和电压特性的变结构励磁控制器

Variable Structure Excitation Controller of Improvement of Power System Stability and Voltage Characteristic

依据非线性变结构控制理论,提出一种新的励磁控制器的设计方法。应用该方法设计的变结构励磁控制器,在有效地改善电力系统功角稳定性的同时,还可以改善发电机端电压的动态特性。该控制器对系统工作点的变化具有鲁棒性。仿真结果表明:该种控制器与已有的PSS控制相比,在改善系统稳定性的同时。

A new excitation controller based on the non linear variable structure control theory is designed.The variable structure excitation controller thus obtained can not noly improve effectively the power system stability,but also improve the voltage charactersitic.This controller has good robustness to disturbances of power system.The results of computer simulation on one machine infinite-bus power system show that the proposed method can not only improve the stability of power system and the voltage characteristic.