Distributed minimum spanning tree approach for critical load restoration using microgrid formation in resilient distribution systems

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2024-11-06 DOI:10.1016/j.epsr.2024.111186

Hooman Saki , Ali Zangeneh , Jamshid Aghaei

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引用次数: 0

Abstract

Power grid is a vital infrastructure for society that can be severely damaged when facing high-impact and low-probability (HILP) events. Following these events, the power supply to critical infrastructures, known as critical loads (CLs), is often interrupted. This interruption can result in substantial financial, social, and security damage. Therefore, it is crucial to quickly restore de-energized CLs based on their priority and importance to society. This paper presents a distributed heuristic algorithm using a Distributed Minimum Spanning Tree (DMST) approach to restore CLs. The proposed algorithm offers several advantages over centralized optimization solutions, including robustness to single-point failures, scalability to large-scale networks, and reduced computational burden. In this algorithm, each controllable distributed generator (CDG), which has a restoration ancillary service contract with the distribution system, individually forms an islanded microgrid to restore CLs. The restoration process aims to maximize the number of restored CLs, enhance post-restoration reliability, and adjust restoration times. The effectiveness of the proposed approach is demonstrated through several case studies on the IEEE 123-bus test system. The results show that the algorithm successfully restores the maximum number of CLs.

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在弹性配电系统中利用微电网形成分布式最小生成树方法恢复关键负载

电网是社会的重要基础设施，在面临高影响、低概率（HILP）事件时会受到严重破坏。这些事件发生后，关键基础设施（称为关键负载 (CL)）的电力供应往往会中断。这种中断会造成巨大的经济、社会和安全损失。因此，根据断电负载的优先级和对社会的重要性，快速恢复断电负载至关重要。本文提出了一种采用分布式最小生成树 (DMST) 方法的分布式启发式算法，用于恢复 CL。与集中式优化解决方案相比，所提出的算法具有多项优势，包括对单点故障的鲁棒性、对大规模网络的可扩展性以及计算负担的减轻。在该算法中，每个与配电系统签订了恢复辅助服务合同的可控分布式发电机（CDG）单独组成一个孤岛微电网来恢复 CL。恢复过程旨在最大限度地增加已恢复 CL 的数量，提高恢复后的可靠性，并调整恢复时间。通过在 IEEE 123 总线测试系统上进行多个案例研究，证明了所提方法的有效性。结果表明，该算法成功地恢复了最大数量的 CL。

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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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.