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电力系统内-外点优化潮流算法

, PP. 129-134

Keywords: 电力系统,优化潮流,内-外点法,KKT条件

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Abstract:

提出了利用内-外点算法(IEPM)求解电力系统最优潮流问题。内点法(IPM)具有全局收敛性好的优点,但有时在最优点附近其收敛速度会降低,而外点法(EPM)在满足二阶最优条件时具有1.5Q的超线性局部收敛速度。IEPM将原对偶内点法和外点法结合,利用内点法寻找全局最优点所在的邻域,当内点法收敛到全局最优点邻域时,转到外点算法继续进行优化潮流数值计算。内-外点优化潮流算法结合了内点法和外点法的各自优点,具有快速的全局收敛性和超线性局部收敛性。对4个IEEE标准测试系统和一个实际某区域685节点系统仿真结果表明,该方法能够保证优化潮流计算的全局收敛性,且收敛速度快,迭代次数少。

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