文章摘要
曹昉,张姚,李赛.基于网架结构相似性和适应性的主动配电网动态重构[J].电力系统自动化,2019,43(16):78-85. DOI: 10.7500/AEPS20190126003.
CAO Fang,ZHANG Yao,LI Sai.Dynamic Reconfiguration of Active Distribution Network Based on Similarity and Adaptability of Network Structure[J].Automation of Electric Power Systems,2019,43(16):78-85. DOI: 10.7500/AEPS20190126003.
基于网架结构相似性和适应性的主动配电网动态重构
Dynamic Reconfiguration of Active Distribution Network Based on Similarity and Adaptability of Network Structure
DOI:10.7500/AEPS20190126003
关键词: 网架结构相似性  网架结构适应性  配电网动态重构  分布式电源  细菌觅食算法
KeyWords: similarity of network structure  adaptability of network structure  dynamic reconfiguration of distribution network  distributed generator(DG)  bacterial foraging algorithm(BFA)
上网日期:2019-07-09
基金项目:
作者单位E-mail
曹昉 华北电力大学电气与电子工程学院, 北京市 102206  
张姚 华北电力大学电气与电子工程学院, 北京市 102206 yzncepu@163.com 
李赛 华北电力大学电气与电子工程学院, 北京市 102206  
摘要:
      为了提升主动配电网对可再生能源的消纳能力、优化分布式电源(DG)入网环境,提出了一种基于网架结构相似性和适应性的配电网动态重构策略。首先,以各单位时段内DG出力最大为目标进行静态重构。然后,从网络拓扑结构量的角度提出了开关状态相似度和改进节点介数相似度两个指标,根据网架结构相似度确定合并时段。随后,从运行状态量的角度定义了网架结构适应性,再依据该指标来客观指导合并时段内最优网架的选择。针对含DG的配电网静态重构问题,提出了一种基于趋化步长自适应调整的改进型细菌觅食算法(IBFA)进行求解。最后,采用PG&E 69节点系统验证了所提重构策略及算法的正确性与有效性。
Abstract:
      In order to improve the capacity of active distribution network to accommodate renewable energy and optimize the environment in which distributed generators(DGs)are installed in the power grid, this paper proposes a dynamic reconfiguration strategy of active distribution network based on the similarity and adaptability of network structure. Firstly, the static reconfiguration of distribution network with the goal of maximizing the DG output in each unit period is performed. Then, two indicators(i. e. the switching state similarity and the improved node betweenness similarity)are proposed from the perspective of network topology structure, and the merging period is determined according to the similarity of network structure. After that, the adaptability of network structure is defined from the perspective of operation state quantity. Based on the adaptability, the selection of optimal network structure in the merging period is guided objectively. Aiming at the problem of static reconfiguration of distribution network with DG, this paper proposes an improved bacterial foraging algorithm(IBFA)based on adaptive adjustment of chemotactic step size. Finally, the modified PG&E 69-bus system is adopted to verify the correctness and effectiveness of the proposed reconfiguration strategy and algorithm.
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