Research and Application of Distribution Network Digital Twin Spatial Layout Technology

This paper studies the layout of the electrical topological relationship of the digital twin space. Based on the geographical resource map and the electrical topological map, the distribution network topological nodes are extracted using the single-line diagram and the ring network diagram tree structure. According to the hierarchical mark of the equipment, the single-line diagram and the ring network diagram structure, combined with the point cloud model, the distribution network digital twin space is rapidly constructed using the automatic generation algorithm of the distribution network three-dimensional model diagram. In this paper, based on the point cloud model, we carry out the research on the three-dimensional correction technology of distribution network equipment, build the point cloud recognition model library of fixed equipment, automatically identify and correct the outdoor overhead line tower, station building and other equipment through the point cloud model, identify the contents of the objects in the station building and underground cable line according to the prior knowledge, and correct the three-dimensional model position based on the three-dimensional model and the point cloud model. This paper develops the spatial layout component of the distribution network digital twins that integrates geographic, physical, management and business information, and realizes the spatial layout and rapid reconstruction of the distribution network digital twins based on electrical topology.