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基于最小生成树及改进遗传算法的含分布式电源配电网孤岛划分方法

DOI: 10.13336/j.1003-6520.hve.2015.10.039, PP. 3470-3478

Keywords: 含分布式电源配电网,故障恢复,孤岛运行,最小生成树算法,最优辐射网络,遗传算法

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Abstract:

为在配电网大规模失电条件下充分发挥分布式电源作用,减小停电损失,基于分布式电源孤岛在线划分的思想,提出了配电网故障后分布式电源孤岛划分的原则,建立了分布式电源孤岛划分的数学模型。提出了孤岛划分算法中无向图的权值整定方法,在此基础上提出分为2个步骤的孤岛划分方法第1步为基于Kruskal算法的含分布式电源最优辐射状配电网的生成方法;第2步为基于改进遗传算法的多DG配电网最优孤岛划分方法。基于PG&E69节点系统对负荷权重设置对算法的影响进行了分析,并对各种方法进行了对比验证。结果表明,最优辐射状配电网是进行最优孤岛划分的基础,可缩小解集空间;所提方法相比启发式算法、分支定界法和动态规划法在恢复负荷数量、负荷价值方面具有优越性,可应用于配电网运行控制。

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