Research on Low Voltage Topology Recognition Based on Relevance of Feature Information

The lack of real-time and accurate line topology relationship on the side of low-voltage substation area, which causes the low efficiency and long cycle of problem checking about safety fault point and line abnormal point. In order to improve the operation and maintenance efficiency of the low-voltage station area, it is necessary to realize the dynamic management of low-voltage station area topology recognition. This paper analyzes and extracts the characteristic information correlation between the downlink carrier module of the intelligent terminal and the carrier module of the intelligent electricity meter, the correlation between the incoming and outgoing line characteristic information of the intelligent branch monitoring unit and combines the offset of power frequency voltage crossing zero to realize modification of dynamic topology recognition in low-voltage station area. Based on the characteristic information of the incoming and outgoing lines, the intelligent terminal in the station area analyzes the household transformer relationship, phase sequence relationship and low-voltage topology relationship, which updates the low-voltage topology diagram in real time by combining with edge calculation. It provides effective intelligent monitoring means for the fault diagnosis of low-voltage side lines, reduces manual inspection and operation and maintenance cycle, and converts “passive” operation and maintenance into “active” operation and maintenance.