考虑多元灵活性资源协同的配电网韧性提升策略
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TM73

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国家自然科学基金资助项目(52177077)


Resilience enhancement strategy for distribution networks considering multiple flexibility resources collaboration
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    摘要:

    在台风灾害频发以及新能源发电渗透率日益攀升的双重背景下,文中提出了包含规模化电动汽车(electric vehicle,EV)在内的多元灵活性资源滚动优化调度策略,以提升台风灾害下配电网韧性。首先,根据典型气象特征,通过蒙特卡洛法模拟所在区域的线路和光伏(photovoltaic,PV)的故障场景,并利用系统信息熵进行典型场景筛选,得到线路和PV的时序故障状态。其次,以最小化加权负荷损失率为目标建立多元灵活性资源优化调度模型。基于EV的时空特征对其进行征用调控,并通过网架重构、协调移动应急发电机(mobile emergency generators,MEG)等手段协同互补以最大化利用网内资源。最后,为适应系统故障状态的演化,实时调整调度方案,提出降低问题求解复杂度的两阶段滚动求解方法。以改进后的江苏某地实际供电单元网络为研究对象进行仿真分析,结果表明所提策略可有效降低负荷损失,提升配电网在极端场景下的韧性。

    Abstract:

    Against the dual background of frequent occurrence of typhoon disaster and increasing penetration of new energy generation,a rolling optimal scheduling strategy of multiple flexibility resources including scaled electric vehicle (EV) is proposed to enhance the resilience of the distribution networks under typhoon disaster. Firstly,the fault scenarios of lines and photovoltaic (PV) in the region are simulated by Monte Carlo method based on typical meteorological characteristics,and the typical scenarios are screened by using system information entropy to get the temporal fault states of lines and PV. Secondly,a multiple flexibility resources optimization regulated model is established with the objective of minimizing the weighted load loss rate. Based on the spatio-temporal characteristics of EVs,they are expropriated and regulated,and the network is reconfigured and coordinated with mobile emergency generators (MEG) to maximize the use of resources in the network. Finally,in order to adapt to the evolution of the system fault state and adjust the regulated scheme in real time,a two-stage rolling solution method is proposed to reduce the problem solving complexity. A simulation analysis is conducted on an improved actual power supply unit network in a certain area of Jiangsu province,and the results show that the proposed strategy can effectively reduce load losses and enhance the resilience of the distribution networks in extreme scenarios.

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麻灿皓,陈丽娟,吴志.考虑多元灵活性资源协同的配电网韧性提升策略[J].电力工程技术,2025,44(1):115-125

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历史
  • 收稿日期:2024-06-28
  • 最后修改日期:2024-09-12
  • 录用日期:2024-07-25
  • 在线发布日期: 2025-01-23
  • 出版日期: 2025-01-28
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