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基于机会约束规划的DG与配电网架多目标协调规划

, PP. 346-354

Keywords: 分布式发电,配电网架扩展规划,选址和定容,多目标优化,机会约束规划,多状态系统

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Abstract:

考虑分布式电源出力以及负荷的不确定性,提出了一种基于机会约束规划的DG与配电网架综合协调规划方法。依据概率密度函数分别对不可控分布式电源和负荷建立了多状态模型,进而获得配电系统多状态模型。以分布式电源位置及容量、线路升级改造、新增负荷点接入为优化变量,以设备投资成本、系统有功损耗、停电损失及购电费用为目标函数,建立了基于机会约束规划的DG与配电网架多目标协调规划模型。通过加权将多目标优化转化成单目标优化问题,采用染色体混合编码方式的遗传算法进行求解。算例仿真结果表明,基于机会约束规划对DG和配电网架进行综合协调规划,能够有效提升配电网的经济效益和供电可靠性,通过模型参数的灵敏度分析给出了置信水平的参考值和光伏单位造价对规划方案经济性的影响。

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