Low-voltage distribution network topology identification method based on characteristic current

Abstract

The correct topology relationship is very important in low-voltage distribution network. The traditional topology identification method is not only low in accuracy and interference, but also low in efficiency. In order to solve this problem, a topology recognition method of low-voltage distribution network based on characteristic current is proposed, which aims to identify the topology of low-voltage substation accurately and efficiently by using intelligent sensing terminal, TMR high-sensitivity sensor and injecting characteristic current. Firstly, a low-voltage distribution network architecture based on intelligent sensing terminal and TMR sensor is constructed. Then, the theoretical basis of TMR sensor and characteristic current applied in station topology identification is analyzed. Finally, a practical example shows that the proposed method has high accuracy and strong tolerance, which is of great significance to improve the accuracy of user information identification, reduce the workload and reduce the cost.