论文部分内容阅读
电力系统混沌振荡被认为是大型互联电力系统停电事故的主要原因,本文通过相图、李雅普诺夫指数图和时域波形图分析了二阶电力系统混沌振荡的动力学行为,并提出了等效快速终端模糊滑模控制来抑制电力系统混沌振荡,使其恢复到同步运行状态.仿真结果表明,所提出的控制方案不仅具有较快的收敛速度,而且能够柔化控制信号,减少控制能量,并且能有效地降低抖振.
Chaotic oscillation of power system is considered as the main cause of power outage in large-scale interconnected power systems. In this paper, the dynamic behaviors of chaotic oscillations in second-order power systems are analyzed by phase diagrams, Lyapunov exponent graphs and time-domain waveforms. Fast terminal fuzzy sliding mode control to restrain the chaotic oscillation of the power system back to the synchronous operation state.The simulation results show that the proposed control scheme not only has a faster convergence rate but also softens the control signal and reduces the control energy, Buffeting can be effectively reduced.