考虑移动式储能调度的配电网灾后多源协同孤岛运行策略

Post-disaster Multi-source Cooperative Islanding Operation Strategy for Distribution Network Considering Mobile Energy Storage System Dispatching

针对极端事件导致的配电网大面积停电现象,在路-电耦合背景下,提出一种考虑移动式储能调度的配电网灾后多源协同孤岛运行策略。首先,基于路-电耦合背景下的灾后运行框架,以加权切负荷量最小为目标,同时考虑交通流量的变化对移动式储能调度过程的影响,建立多源协同孤岛运行模型;然后,根据所建模型的特点以及决策需求,基于两阶段优化框架制定孤岛运行决策流程,确保失电孤岛区域与含本地电源区域负荷恢复的协调进行;最后,采用IEEE 33节点配电网与29节点交通路网相耦合的算例进行分析,验证所提策略的有效性。结果表明,所提孤岛运行策略可以充分发挥各电源在配电网灾后恢复时的协同能力,实现了有限电能的最优分配和转移,有效提升了配电网灾后恢复效果。

Aiming at the phenomenon of large-area power failure in the distribution network caused by extreme events,in the background of traffic-grid coupling,this paper proposes a post-disaster multi-source cooperative islanding operation strategy for the distribution network considering mobile energy storage system dispatching.First,based on the post-disaster operation framework in the background of traffic-grid coupling,with the objective of minimizing the weighted load shedding,and considering the influence of traffic flow changes on the dispatching process of mobile energy storage system,a multi-source cooperative islanding operation model is established.Then,according to the characteristics of the proposed model and the decision-making requirements,the decision-making process of islanding operation is established based on the two-stage optimization framework to ensure the coordination of load restoration between the island area after power loss and the area with local power supply.Finally,a case of IEEE 33-bus distribution network coupled with 29-bus traffic network is used to verify the effectiveness of the proposed strategy.The results show that the proposed islanding operation strategy can give full play to the collaborative ability of all power sources in the post-disaster distribution network restoration,achieve the optimal distribution and transfer of limited electricity,and effectively improve the post-disaster restoration effect of distribution network.