面向弹性提升的主动配电网重构与元件修复协同方法

极端事件会导致主动配电网出现多处故障且故障元件修复时间长，传统的故障恢复方法会使得系统的弹性低。针对主动配电网的故障恢复阶段，提出了一种面向弹性提升的重构与故障元件修复协同方法。首先，结合计及负荷重要程度的主动配电网弹性指标，分析出故障恢复阶段弹性提升的主要措施；在此基础上，提出重构与故障元件修复协同策略框架，给出交替协同中线路状态变量和节点负荷供电状态变量的更新与关联。其次，建立全过程故障元件修复和重构的目标函数。针对主动配电网含多分布式电源特点带来的故障元件上下游关系难以判别问题，提出基于消线解故障环法和圈源等效法的判别方法。最后，算例结果表明，所提方法能有效地提升主动配电网的弹性。

Collaborative method for an active distribution network reconfiguration and component repair for resilience improvement

Extreme events will cause multiple failures in an active distribution network and involve a long repair time for faulty components. Traditional failure recovery methods will make the system less resilient. Considering the fault recovery stage of an active distribution network, we propose a collaborative method of reconfiguration and faulty component repair oriented to resilience improvement. First, combined with a resilience index of the active distribution network that takes into account the importance of the load, the main measures of resilience improvement in the fault recovery stage are analyzed. Then a framework for collaborative strategies for reconfiguration and faulty component repair is proposed, and the update and correlation of line state and node load power supply state variables in alternate coordination are given. Then, the objective functions of faulty component repair in the whole process and reconfiguration are established. There is a problem that it is difficult to distinguish the upstream and downstream relationship of faulty components. This is because of the characteristics of active distribution network with multiple distributed power sources. To tackle this problem, a distinguishing method based on the method of eliminating the fault loop and circling source equivalent method is proposed. Finally, example results show that the proposed method can effectively improve the resilience of the active distribution network.This work is supported by the National Natural Science Foundation of China (No. 61873222).