配电子系统的建模关键是忽略其内部的暂态过程并作出了网络的等值电路图，因而依此建立的节点电压方程为代数方程。

The key to power distribution system is to ignore transient process in this sub-system and to draw the network equivalent circuit diagram, therefore its node voltage equation is algebraic equation.

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结合配电网络实际，选用图算法作为研究馈线自动化系统的算法理论依据被证明是比较适宜的处理方案。

Combined with the practical situiation in distribution network, it's suitable to select graph algorithm as the theoretical algorithm base.

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针对规模巨大的实际配电系统，应用图的多级划分思想，提出了图的压缩算法以提高计算效率。

Since the large scale network may not be partitioned efficiently, we present a multi level method to speed up.

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