摘要
设计了一种静止无功补偿器与发电机励磁的逆推Terminal滑模协调控制器,采用逆推法逐步构造李亚普洛夫函数,不确定参数用自适应律替换,最后一步加入Terminal滑模面,使相关变量能够在有限时间内收敛到零。针对单机无穷大系统的仿真结果表明,所设计的逆推Terminal滑模协调稳定控制器能够快速阻尼功率振荡,有效提高电力系统的暂态稳定性并可维持机端电压恒定。
A backstepping terminal sliding mode control coordinated control for SVC and generator excitation is designed. By use of backstepping method the Lyaptmov fimction is constructed step-by-step; the uncertain parameters are replaced by adaptive law; finally, the terminal slide surface is added to make correlated variables enable to converge to zero in finite time. The design procedure of controller is based on the nonlinear system without any linearization, so the nonlinear property of the dynamic system is well utilized. Simulation results of single-machine infinite-bus system show that the designed backstepping terminal sliding mode control coordinated controller can damp power oscillation rapidly, improve transient stability of power system and make terminal voltage of generator stable.
出处
《电网技术》
EI
CSCD
北大核心
2011年第4期108-111,共4页
Power System Technology
