基于模式能量流法的互联电网功率振荡能量解析与主振荡路径识别

针对互联电力系统的功率振荡现象，为了能够深入剖析，构建了模式能量流函数，对互联电力系统的功率振荡进行网络模式能量的求取，并进行能量解析。在此基础上，利用所建立的基于广域量测信息的模式阵型指标，判别系统功率振荡发电机分群情况，同时根据所建立的主振荡路径判别指标对系统主振荡路径进行辨识，得到系统能量交互的主振荡路径。通过对4机两区和8机36节点算例进行仿真，验证了所提出的互联电力系统功率振荡能量解析与主振荡路径识别方法的有效性。

Power oscillation energy analysis and the main oscillation path identification of interconnected power systems based on the mode energy flow

As to power oscillation phenomenon of the interconnected power systems can be further revealed, mode energy flow function is proposed. Then network mode energy is calculated, and the power oscillation of interconnected power grid is analyzed by oscillation energy. Thus, mode shape index based on the wide-area measurement information is constructed to judge power oscillation generator groups. At the same time, the main oscillation path index of power system is set up to identify main oscillation path, and in order to get the energy interaction main oscillation path. Through simulation of four machine two area and 8-machine 36 node examples, the effectiveness of proposed power oscillation energy analysis and the main oscillation path identification method is validated. This work is supported by National Natural Science Foundation of China (No. 51377017).