Distribution station branch line distinguishing line loss analysis method based on voltage search branch lines

The invention provides a power distribution station distinguishing branch line loss analysis method based on a voltage search branch line, and the method comprises the specific steps: firstly, respectively assembling a first-stage branch line monitoring unit and a second-stage branch line monitoring unit at a first-stage branch node and a second-stage branch node of a station area; acquiring operation voltage and power factor data of a first-stage branch node, a second-stage branch node and a user node of the transformer area at continuous T measurement moments; secondly, a voltage similarity coefficient matrix is obtained, downstream branch line users are searched based on upstream node voltage similarity, and the phase-line-household hierarchical topological relation of the station area users is combed; and finally, according to the phase-line-household grading topological relation of the transformer area, analyzing the branch line loss of the transformer area by adopting a voltage loss method. The method i