Topology Verification Method of Low-Voltage Distribution Network based on T-type Grey Correlation Degree

The network topology information is essential for management and operation of low-voltage power distribution network, but might not be accurately available at all time because of the changes that take place due to network reconfiguration, repairs, and maintenance. This paper proposes a topology verification method of low-voltage distribution network based on T-type grey correlation degree (TGCD). First, the TGCDs between user voltages and transformer voltage of the station area are calculated to find out the suspicious user; then, the TGCDs between the suspicious user voltage and the transformer voltage of all adjacent stations are calculated, and the suspicious user is assigned to the station area with the biggest TGCDs. Case study has verified the effectiveness of the proposed method.