The invention relates to the technical field of low-
voltage power distribution operation and maintenance, and discloses a low-
voltage transformer area road and line checking method and
system, and the method comprises the steps: obtaining a reference electrical characteristic value of each low-
voltage branch line in a
transformer area in a stable operation state, executing a preset disturbance operation sequence on a target low-voltage
branch switch, and collecting full-period
target response electrical data; calculating a multi-dimensional feature difference value of each
branch line based on the reference electrical feature value, and dynamically determining a
feature matching threshold by combining a load type identification result; performing accurate matching judgment on the dynamic threshold value and the multi-dimensional feature difference value, and generating affiliation relation data of the target branch switch and each
branch line; and a full-flow mechanism of automatic
data acquisition, intelligent feature analysis and dynamic threshold value
adaptation is adopted to complete branching line checking. According to the invention, through collaborative innovation of active disturbance response acquisition, dynamic threshold adjustment of load type
adaptation and multi-dimensional
feature matching, comprehensive improvement of low-voltage
transformer substation road-distinguishing line checking precision, adaptability and
operation safety is realized, and reliable
technical support is provided.