Power line carrier synchronization method and device for distributed electrical equipment

The invention relates to a power line carrier synchronization method and device for distributed electrical equipment, and the method comprises the steps: transmitting a detection signal to a neighbor node of a node to be subjected to time service, constructing and analyzing a subcarrier evaluation knowledge graph instance, and carrying out the modeling of a power line carrier communication model for a scene where the distributed electrical equipment is connected to a power distribution network; according to the method, accurate evaluation on the quality of service (QoS) of the subcarriers is realized. Besides, based on subcarrier QoS evaluation, time synchronization information is broadcasted to neighbor nodes, clock skew is calculated, normalized weighted analysis is carried out, time synchronization is carried out step by step according to node topology levels, and accurate time synchronization of the distributed electrical equipment is realized. Compared with the prior art, the method has the advantages th