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基于机会约束凸松弛的分区随机无功备用优化方法

, PP. 73-80

Keywords: 机会约束凸松弛,无功控制分区,无功备用,逐次分区优化,电压稳定裕度

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Abstract:

针对含不确定性的新能源大量接入和系统无功功率的区域特性,提出一种基于电压控制分区的区域随机无功备用优化方法。首先采用基于凝聚聚类和模块度指标对系统进行无功分区,然后利用松弛方法将含随机性的优化模型转换为确定型,最后提出基于无功分区的逐次无功备用优化方法。若干仿真算例的分析证明,机会约束凸松弛方法可较准确地转换机会约束,而分区优化方法将高维的无功备用问题转换为低维的子问题,提高了算法的寻优效率,获得的优化方案可显著提高区域无功备用和电压稳定裕度,降低系统运行的风险,并对N-1故障后系统的电压水平也有一定改善作用。

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