基于果蝇优化算法的广域阻尼控制器设计

摘要

针对大规模互联电网区间低频振荡问题，提出了基于果蝇优化算法(Fruit Fly Optimization Algorithm, FOA)的广域阻尼控制器设计方法。以标准16机68节点系统为例，对系统进行线性化，并进行模态分析，找出系统区间振荡模式及阻尼比。根据区域低频振荡模式下参与因子选择广域反馈信号。分析了广域控制器结构，并采用FOA算法对其参数进行优化。仿真结果表明，提出的广域控制器方法能有效地提高区间振荡阻尼比，为电力系统低频振荡优化控制提供了新的思路。%With regard to the inter-area low-frequency oscillation problems in large-scale interconnected power system, a design method based on Fruit fly Optimization Algorithm (FOA) for the wide-area damping controller is proposed. The 16-machine 68-bus power system is employed to validate the effectiveness of the method presented. The system is linearized at first, and modal analysis is conducted to find out the interval oscillation modes and corresponding damping ratios, under which the rotor speed participation factors are obtained. Through the participation factors the wide-area feedback signal is selected appropriately. Afterwards, the structure of the wide-area controller is analyzed and the FOA algorithm is adopted to optimize the parameters. Finally, the simulation results show that the proposed design method of wide-area controller can better improve the inter-area oscillation damping ratios, which provides a new thought for the optimal control of low-frequency oscillation.