【摘要】 为提高配电网在严重故障后的供电恢复能力，应充分利用风、光、储能和可控负荷等灵活资源的互动调节能力。首先，在图数据库tigergraph中建立主动配电网图模型，并针对节点分层潮流计算需求进行改进。其次，建立考虑风光储联合出力和可控负荷削减的主动配电网孤岛划分优化模型，提出基于图计算并行模式的广度优先搜索算法和最短路径算法的孤岛划分策略，通过检验、调整的方式确保孤岛满足运行约束。最后，采用改进的IEEE 33节点主动配电网模型进行仿真验证，结果表明所提策略有效地利用风光荷储的互动特性，得到了更合理的孤岛划分方案，能够在降低分布式电源出力波动的同时提高重要负荷恢复比例。更多还原

【Abstract】 In order to improve the power supply restoration ability of the distribution network after severe faults, the interactive regulation ability of flexible resources such as wind, light, energy storage and controllable loads should be fully utilized. Firstly, an active distribution network graph model is established in the graph database tigergraph and improved for the demand of node hierarchical trend calculation. Secondly, an active distribution network islanding optimization model considering the combined output of wind, solar, storage and controllable load reduction is established, and an islanding strategy based on the breadth-first search algorithm and the shortest path algorithm in the parallel mode of graph computation is proposed to ensure that the islands satisfy the operation constraints through inspection and adjustment. Finally, the improved IEEE 33 bus active distribution network model is used for simulation verification, and the results show that the proposed strategy effectively utilizes the interactive characteristics of wind, energy, storage and load, and obtains a more reasonable islanding scheme, which is able to reduce the fluctuation of distributed power output and improve the proportion of important load recovery at the same time.更多还原