台风场景下基于多种分布式资源协同的弹性配电网两阶段供电恢复策略

Two-stage Power Supply Restoration Strategy of Resilient Distribution Network Based on Coordination of Multiple Distributed Resources in Typhoon Scenario

近年来频发的自然灾害极大威胁配电网安全运行,统筹考虑不同分布式资源特点,发挥分布式资源互补互济优势,有助于解决灾后配电网部分线路损坏、电力供应不足问题,实现电网灾后快速恢复。在电网中分布式资源种类不断丰富的背景下,本文提出一种台风场景下基于多种分布式资源协同的弹性配电网灾前及灾后两阶段供电恢复策略。首先,考虑配电网和交通网耦合的影响,灾前阶段在考虑电动汽车调度的同时,以加权失电量期望最小为目标建立移动储能和抢修队应急仓库选址模型;其次,根据以上3种分布式资源以及柔性负荷的灾后响应特征,将灾后阶段分为紧急功率支撑和负荷快速恢复两个过程,搭建了配电网灾后多时段恢复优化模型;然后,通过深入研究多种分布式资源的优缺点,设计了配电网两阶段供电恢复框架;最后,设计了多组算例,验证了所提方法的有效性和可行性。

In recent years,frequent natural disasters have greatly threatened the safe operation of distribution network.Considering the characteristics of different distributed resources and giving full play to the complementary advantages of distributed resources are helpful to solve the problems of partial line damage and insufficient power supply in post-disaster distribution network and to realize the rapid recovery of power grid after disaster.Under the background of the continuous enrichment of distributed resources in the power grid,this paper proposes a two-stage power supply re-covery strategy for resilient distribution network based on the coordination of multiple distributed resources before and after the disaster of typhoon.Firstly,the influence of the coupling of distribution network and transportation network is taken into consideration,and the location model of mobile energy storage system and repair crew emergency warehouse is established with the goal of minimizing the weighted loss of power expectation while considering the scheduling of elec-tric vehicles in the pre-disaster stage.Secondly,according to the post-disaster response characteristics of the above three distributed resources and flexible loads,the post-disaster stage is divided into two processes,namely,emergency power support and rapid load recovery,and a multi-period post-disaster recovery optimization model of distribution network is built.Then,through in-depth study of the advantages and disadvantages of various distributed resources,a two-stage power supply recovery framework for distribution network is designed.Finally,several sets of cases are designed to veri-fy the effectiveness and feasibility of the proposed method.