Regarding the important role of grid structure and electrical distance in power grid division, a fast selection method of power grid division node based on ripple diffusion mechanism is proposed According to the characteristic that the high voltage substation is selected as the central point in the grid division and the principle that ripples first arrive at the shortest distance from the central source when they diffuse outward, .firstly, the power network is transformed into a topological graph. Then, by simulating the ripple diffusion process, the points whose shortest path from the source node within the prescribed distance will be searched, and these nodes are partitioned into the same partition with the source node. Finally, taking 500 kV/220 kV power grid as an example, the 500 kV site is selected as the initial source node, and the grid division with the support of the 500 kV site is determined. The accuracy and practicability of the proposed method are verified by the IEEE39 node system and the actual power grid in East China.%针对网架结构和电气距离在电网分区中的重要作用,提出了一种基于波纹扩散机理的大电网分区节点的快速选取方法.根据电力网络分区过程中是以高电压站点为支撑站点的特点以及波纹从中心源向外扩散时最先到达与中心源距离最短点的原则,将电力网络转换成拓扑图.然后通过模拟波纹扩散过程搜索距离源点最短路径在规定距离内的站点,将符合要求的站点与源点划分至同一分区.最后以500 kV/220 kV电网为例,选取500 kV站点为初始源点,最终确定以500 kV站点为支撑的电网分区.IEEE 39节点系统和华东地区某实际电网验证了所提方法的准确性和实用性.
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