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电网技术  2015 

计及零注入节点约束的混合量测分区状态估计方法

DOI: 10.13335/j.1000-3673.pst.2015.08.028, PP. 2253-2257

Keywords: WAMS,SCADA,状态估计,零注入,网络分区

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Abstract:

在WAMS/SCADA混合量测系统下的分区状态估计算法能够综合2系统的特性进行状态估计计算,并且达到较好的估计效果,但是该方法并未考虑到零注入节点约束,不能保证零注入节点注入量严格为零。为此,文章在分区混合估计法的基础上,提出一种计及零注入节点约束的分区估计方法。该方法考虑到WAMS可观测区与WAMS不可观测区内不同的量测性质,在2区域中采用了不同的零注入节点处理办法,使两区域内的零注入节点严格为0;同时针对2量测区域边界零注入节点与两区域均相关而带来的零注入节点处理困难问题进行了专门处理,使边界处零注入节点的注入量保持为0。在IEEE9、IEEE39、IEEE118节点系统中的算例结果表明该方法能够在牺牲较小计算效率的前提下,保证两量测区域内的零注入节点注入量严格为零。

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