A Method of Low Voltage Topology Identification

In order to improve the success rate and efficiency of automatic identification of low-voltage distribution topology, this paper proposes a record-based topology identification method. The topology recognition is divided into consumer-transformer relation recognition and hierarchical recognition. High-speed power line carrier (HPLC) automatic networking was used to obtain and judge the equipment information to generate the consumer-transformer relationship in the low voltage area. The topology terminal unit and low-voltage equipment with topology recognition function generate records through specific topology signal exchanging information. Then, the intelligent distribution transformer terminal unit summarizes these records and combines the relationship between power consumers and transformer to generate the hierarchical relationship. This topology identification method has the advantages of simple control logic, fast identification speed and high identification accuracy, which can provide the important basic data for real-time fault location, power line loss analysis and area capacity estimation and other advanced applications of low-voltage distribution.