SSSC与发电机励磁最优协调控制

Optimal Coordinated Control of SSSC and Generator Excitation

为提高电力系统阻尼振荡的能力,利用静止同步串联补偿器SSSC(static synchronous series compensator)的串联补偿特性,在单机无穷大系统下建立了带SSSC的修正Phillips-Heffron模型,提出SSSC与发电机励磁最优协调控制策略;将SSSC补偿阻抗作为控制器的控制变量,推导出控制器数学模型。仿真结果表明,与常规线性最优励磁控制相比,所提的控制策略能更有效地抑制电力系统振荡。

In order to improve the ability of power system to dampen oscillations, the series compensation characteris- tics of static synchronous series compensator （SSSC）is utilized to establish a modified Phillips-Heffron model with SSSC in single machine infinite bus system, and an optimal coordinated control strategy of SSSC and generator excita- tion is proposed. Taking the compensating impedance of SSSC as a controlled variable of optimal controller, the mathematical model of controller is derived. The simulation resuhs indicate that, in comparison with linear ordinary optimal excitation control, the proposed control strategy can suppress power system oscillations more effectively.