Feasibility Analyzing of Removing Line Trap Based on Graph Theory and GIS

With the development of the optical fiber communication, the PLC communication gradually changes to be an auxiliary method in the electric power communication. Most power line carrier channels have been already replaced by the fiber channels, and a lot of free line traps have increased the electric energy loss. This paper applies graph theory to establish a graphical modeling, and uses the breadth-first traversal algorithm to search the shortest path between two co-frequency use carrier channels which is influenced by unloading traps. Then by calculating the Signal to crosstalk ratio of co-frequency use carrier channels in the shortest path, the decision of unloading the traps is made. The calculating index improved in the paper is more practical. The experiment demo illustrates that the proposed scheme is more effective.