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.
网络拓扑是进行系统等值电阻计算和潮流计算的基础。
Network topology is base to calculate substitution resistance and power flow.
结合网络等值法，给出了基于未确知有理数的配电系统可靠性评估模型和算法。
By combining unascertained rational number operation with the network-equivalent approach, an algorithm is introduced to calculate the possibility reliability indices of distribution systems.
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