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虚拟母线技术及其应用(三):静态安全校核方法

DOI: 10.13334/j.0258-8013.pcsee.2014.10.010, PP. 1592-1598

Keywords: 虚拟母线技术,静态安全校核,紧急线路集,关键断面,-2

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Abstract:

母线负荷预测将为静态安全校核提供重要的节点负荷数据。然而,在工程实际中,随着电网规模的不断扩大,其N-1/N-2校核场景出现了几何级数式的组合增长,也增加了每个校核场景计算的复杂度。虚拟母线是电网中存在一种紧密联系的连通局部网络,利用虚拟母线技术可以预先辨识起作用场景,在解决静态安全校核计算复杂度上具有显著的效果。为此,面向关键断面这一重要的电网安全特征,从电网中辨识出若干个虚拟母线,基于划分好的虚拟母线,筛选出相应的影响线路与波及线路,并构建紧急线路集;对此集合的线路实施静态安全校核。河北南网的算例结果表明,基于虚拟母线的静态安全校核算法可以在很大程度上提高静态安全校核的计算速度,适应工程实际需要。

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