Power distribution network topology identification method, device and system based on multi-source information, and medium

The invention provides a power distribution network topology identification method, device and system based on multi-source information and a medium, first topology information of a target power distribution network at the last moment and multi-source information of the target power distribution network at the current moment are acquired, and the multi-source information comprises SCADA measurement information, muPMU measurement information and AMI measurement information; according to the mu PMU measurement information, determining whether the current moment is a topology change moment, and when the current moment is the topology change moment, determining second topology information of the target power distribution network according to the mu PMU measurement information, the first topology information and a pre-established first neural network; and determining third topological information of the target power distribution network at the current moment according to the second topological information, the SCA