Topology identification method and system for low-voltage transformer area

The invention discloses a low-voltage transformer area topology identification method and system, and relates to the technical field of electric energy metering, and the method comprises the steps: obtaining split-phase voltage data collected by HPLC, and generating a tree structure to reflect a power supply topology hierarchical relation based on the Kirchhoff's law and in combination with the relation between the similarity of the voltage change trend of each phase electric energy meter in a transformer area and the phase line topology; carrying out structured processing on the power utilization address of the user, and carrying out analysis and statistics on the address; distinguishing the power supply topology types of the transformer area according to the address distribution characteristics, obtaining a branch segmentation threshold value, segmenting the branch segmentation threshold value, fusing all phase branch segmentation results, and obtaining a transformer area main body topology structure. Accor