基于无源性的发电机励磁和TCSC协调控制

Coordination Control Between Generator Excitation and TCSC Based on Passivity

发电机励磁系统以及可控串联电容补偿器(thyristor-controlled series capacitor,TCSC)对远距离输电系统的稳定性影响很大。本文利用无源性控制原理和变结构控制,得到一种直接针对多输入多输出的非线性模型的设计方法,并设计了发电机励磁和TCSC的协调控制器。由于在控制器的设计过程中没有用到任何线性化方法,因而所得控制器充分利用了系统的非线性特性。仿真证实了其能有效地改善电力系统的稳定性,且对系统参数的变化具有强鲁棒性。

Both generator excitation system and TCSC have great influence on the stability of long-distance transmission system. Used the variable structure control and passivity control theory, the paper derives a direct design method to the multi-input and multi-output nonlinear model, and proposes a coordinate con- troller for generator excitation system and TCSC. Since no linear method is used in the controller design process, the controller fully considers the nonlinear characteristics of power system. Simulation results show clearly that the proposed controller can improve the stability of the power system, and has strong ro- bustness to the change of the system parameters.