中文摘要：

如何从基本电气原理和规律出发求解电力网络源流之间发生电气供求关系的路径信息，是一个有待解决的难点问题。传统方法大都基于比例共享原则并通过潮流跟踪方法来获取源流之间功率的供给关系。与之不同，文中首先在包含计及充电容纳的普通线路和变压器支路在内的交流支路和节点联合体的基础上，给出了严格满足各种基本电气原理和规律的联合电气剖分关系；然后分析了如何利用有向图技术求解网络源流供求关系路径链的方法；最后，提出了面向电力网络不同源流对象的电气剖分算法，并通过算例说明了电力网络电气剖分结果的正确性。

英文摘要：

It is difficult to obtain path information in the supply and demand relationship between sources and flows of electric power network according to the basic electrical principles and laws. The supply and demand relationships are usually obtained by traditional power flow tracing methods which are mostly based on proportional sharing principle. In this paper, the union of AC branch and bus is extended to consider ordinary transmission line with charging capacitors and transformers, and the united electrical dissection relationships are presented which strictly satisfy the basic electrical principles and laws. Then, how to obtain path linkages between sources and flows of electric power network is analyzed by directed graphs theory. Finally, electrical dissection algorithms for different objects are presented. Examples prove the correctness of the proposed electrical dissection algorithms.