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电网技术  2009 

基于负荷区间的最小电压稳定域求解方法

, PP. 119-123

Keywords: 电力系统,负荷区间,最小电压稳定域,最近电压崩溃点,线性规划

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Abstract:

提出了一种负荷区间下最小电压稳定域的求解方法。在电网各节点及总负荷水平不确定,且只能给出一个区间范围的情况下,首先定义了一个基于负荷区间的最小电压稳定域模型;然后采用线性规划法对其进行求解,找出一组最危险的负荷分布,使其在满足负荷取值范围的约束下,离崩溃曲面的负荷距离最小。文中方法考虑了各节点和系统总负荷水平的区间性,为电压稳定性分析提供了一种新思路。IEEE14和57节点算例系统验证了所提算法的快速、有效性。

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