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一种考虑风电随机性的机组组合模型及其算法

, PP. 22-29

Keywords: 风电,机组组合,机会约束规划,抽样平均逼近,混合整数规划,MonteCarlo

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Abstract:

提出一种考虑风电随机性的机组组合模型,模型中引入风电可信度指标,同时对风电功率随机变量建立机会约束条件,提出了三种策略确保了系统运行的安全性。基于抽样平均逼近(SAA)理论,将上述模型转换成机组组合-抽样平均逼近(UCSAA)模型;尤其在风电随机变量服从联合概率密度分布的情况下,通过引入多个0/1辅助变量将机会约束条件转换成确定性约束,有效解决了常用智能算法求解时间较长的问题;将UCSAA模型线性化以后,采用线性化MIP算法进行求解,其中随机变量的样本由MonteCarlo仿真生成。最后,分别对IEEE3机和10机系统算例进行仿真,结果表明了本文模型及算法的正确性和有效性。

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