STATCOM与同步发电机励磁能量稳定控制

Energy stability control for STATCOM and synchronous generator excitation

针对STATCOM与同步发电机励磁控制问题,运用李雅普诺夫直接法,以同步发电机端电压、转子角速度、电磁功率、STATCOM装设点电压等构建李雅普诺夫函数。基于非线性反馈设计,构造完全可控线性系统,设计控制目标微分运动轨迹,与李雅普诺夫函数导数负定性的判定相关联。根据矩阵理论与极点配置原理,选择反馈增益,满足李雅普诺夫函数导数负定性条件。最后,仿真结果表明:文中所提出的方案在稳压同时对系统的稳定有大幅度改善。

Appling the Lyapunov direct method, a Lyapunov function is constructed with the terminal voltage, rotor speed and active power ol the generator and the voltage at the bus ol STATCOM in order to deal with the control of synchronous generator excitation and STATCOM. By nonlinear feedback design, a completely controllable liner system is constructed to design the trajectory ol the time-derivative ol the control objectives, which is closely related to the negative definiteness ol the time-derivative ol Lyapunov function. Furthermore, leedback gains are chosen to determine the negative deliniteness ol the derivative ol Lyapunov lunction based on the matrix theory and pole arrangement method. Finally, the simulations demonstrate that the power system stability and voltage regulation can be enhanced by the proposed method.