Pre-disaster allocation and post-disaster dispatch strategies of power emergency resources for resilience enhancement of distribution networks

IF 3.3 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
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引用次数: 0

Abstract

With the frequent occurrence of large-scale power outages caused by extreme disasters, coordinated dispatch of power emergency resources (PERs) and repair crews (RCs) has gradually become an essential method to enhance the resilience of distribution networks (DNs). Previous works solve this coordinated dispatch problem in a risk-neutral approach with the assumption that the supply of power repair materials (PRMs) is still fully available after the disaster. However, growing evidence indicates that certain extreme disasters may lead to limited availability of PERs in the DN, rendering risk-neutral decision making impractical. To fill this gap, this paper proposes a resilience-oriented PERs pre-disaster allocation and post-disaster dispatch strategy in a risk-averse manner. In the pre-disaster prevention process, a two-stage distributionally robust optimization (DRO) model based on mean-CVaR is developed, considering the uncertainties of both system damage and PERs demands, along with the decision maker's preference for risk. In the post-disaster restoration process, a collaborative spatio-temporal dispatching model for PERs and RCs with the goal of minimizing outage losses is established. To tackle the computational challenges associated with PRMs allocation based on DRO, robust counterpart transformation and dual theory are utilized. Case studies are conducted using a real world modified 118-bus distribution network. In comparative analysis, five control groups are established to validate the necessity to consider the limited supply of PRMs and the risk-averse attitude of decision makers in enhancing DNs resilience.

提高配电网抗灾能力的电力应急资源灾前分配和灾后调度策略
随着极端灾害导致的大规模停电事件频繁发生,电力应急资源(PER)和抢修人员(RC)的协调调度逐渐成为提高配电网(DN)恢复能力的必要方法。以往的研究采用风险中性的方法来解决协调调度问题,并假设灾后电力抢修物资(PRMs)的供应仍然充足。然而,越来越多的证据表明,某些极端灾害可能会导致 DN 中的 PER 供应有限,从而使风险中性决策变得不切实际。为了填补这一空白,本文提出了一种以抗灾能力为导向的 PERs 灾前分配和灾后调度策略。在灾前预防过程中,考虑到系统损坏和 PERs 需求的不确定性,以及决策者的风险偏好,建立了基于均值-CVaR 的两阶段分布鲁棒优化(DRO)模型。在灾后恢复过程中,建立了 PER 和 RC 的协作时空调度模型,目标是最大限度地减少停电损失。为了解决与基于 DRO 的 PRMs 分配相关的计算挑战,利用了鲁棒对应变换和对偶理论。案例研究使用了一个真实世界的改进型 118 总线配电网络。在对比分析中,建立了五个控制组,以验证在提高 DNs 恢复能力时考虑 PRMs 有限供应和决策者规避风险态度的必要性。
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来源期刊
Electric Power Systems Research
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.
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