Topological analysis of a cross-voltage level distribution network

The present invention relates to a method for topological analysis across the voltage level of the distribution network, said method comprising topology bus topology based on a data structure, the node topology and dynamic topology three processes; the bus topology process: on the bus are numbered and establish a connection array section based on the input data bus is Ping Heng depth-first search starting point to expand the network distribution network; topology the node process: number of nodes and establish a network node admittance matrix; dynamic topology of the process: the node admittance matrix track changes to the power system. The method can handle power distribution ring network topology, multi-phase lines, dynamic topology, and analysis to resolve the difficulties voltage levels across the distribution network topology faces.