Fault Recovery Strategy for Active Distribution Network Considering Repair Sequence Under Extreme Weather

2022 Asian Conference on Frontiers of Power and Energy (ACFPE) Pub Date : 2022-10-01 DOI:10.1109/ACFPE56003.2022.9952327

Wei He, Xiaolei Liu, Qi Wang, Lunjian Mu, Zhenyuan Qin, X. Lei

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Abstract

In recent years, power system blackouts caused by extreme weather have occurred more frequently. Based on the analysis of the characteristics of large scale failures of the distribution network in extreme weather, a fault recovery strategy considering repair sequence is proposed to improve the power supply capacity of the distribution network. A two-layer distribution network reconfiguration model considering both reliability and costs is established. Considering both the reliability and the economy, the loss load and the cost of distributed generation are minimized at the upper layer and the lower layer, respectively. Firstly, the statues of tie switches are adjusted after the network failure to construct the new radial network and obtain the topology based on the graph theory. Then the dynamic programming method is utilized to determine the optimal topology and the fault repair sequence. Taking the improved PG&E 69 node system as an example, the effectiveness and practicability of the proposed method for fault recovery under extreme disasters are verified.

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极端天气下考虑维修顺序的有源配电网故障恢复策略

近年来，由极端天气引起的电力系统停电事件越来越多。在分析极端天气下配电网大规模故障特点的基础上，提出了一种考虑检修顺序的配电网故障恢复策略，以提高配电网的供电能力。建立了考虑可靠性和成本的两层配电网重构模型。同时考虑可靠性和经济性，分布式发电的损失负荷和成本分别在上层和下层达到最小。首先，在网络发生故障后调整连接交换机的状态，构建新的径向网络，并基于图论获得拓扑结构;然后利用动态规划方法确定最优拓扑结构和故障修复顺序。以改进后的PG&E 69节点系统为例，验证了该方法在极端灾害下故障恢复的有效性和实用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 Asian Conference on Frontiers of Power and Energy (ACFPE)

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