一种基于广域角速度信号的暂态励磁控制方法

针对电网发生故障后的暂态稳定问题,文中提出了一种基于广域角速度信号的暂态励磁控制方法,电网中的角速度信号更易获取,因此该控制方法简单易行.首先,通过临界机群的识别判据识别出故障电网中的临界机群;然后,通过李雅普诺夫理论推导出一种将广域角速度信号作为控制信号的励磁控制器,并通过该控制器对临界机群内所有发电机组进行励磁控制;最后通过在Matlab/simulink仿真平台搭建的10机39节点系统验证该励磁控制方法能有效改善故障电网的暂态稳定性.

A Transient Excitation Control Method Based on Wide Area Angular Velocity Signal

In order to solve the problem of transient stability after power grid failure,a transient excitation control method based on wide area angular velocity signal is proposed.The angular velocity signal in power grid is more easily obtained,so the control method is simple and easy.First,the critical cluster in the fault power grid is identified by the critical cluster identification criteria;then,an excitation controller is derived by Lyapunov theory,which takes the wide area angular velocity signal as the control signal and controls the excitation of all the generator groups in the critical cluster through the controller;finally,the classic 10 units and 39 sections are built in Matlab/Simulink simulation platform The point system verifies that the excitation control method can effectively improve the transient stability of the fault grid.