计及随机干扰的发电机励磁系统自抗扰控制研究

针对发电机励磁系统的动态性能随工况及实际发电厂中存在的各种随机干扰等因素的影响而发生变化的特点,设计了基于自抗扰控制技术(ADRC)的励磁系统控制策略。该控制技术不需要了解系统的内部模型,能有效克服系统的不确定性,系统响应快,算法简单,易于实现。仿真结果表明,这种控制方法能实时地估计与补偿内外扰动,有效改善了各种随机干扰及量测误差对系统稳定性的影响,而且解决了励磁控制的快速性与超调性之间的矛盾,提高了系统的动态性能和发电机端电压的控制精度。

Research on Auto-Disturbance-Rejection Control of Generator Excitation System Concerning with Random Disturbance

The excitation control strategy based on ADRC has been designed according to the variation of the dynamic performance and existing random disturbance control in power plants.Without recognizing the inner model the control technique could effectively avoid system uncertainty with rapid response and easy algorithm.The simulations results show that the control method could real-time compensate the inner and outer disturbances and effectively modify system stability influenced by random disturbances and measuri...