3D Data Fusion and Registration Technology of Substation Based on Digital Twin Space Analysis.

In view of the difficulties in sharing 3D digital resources, insufficient interconnection and interaction of massive heterogeneous 3D data resources, and lack of spatial data analysis foundation for equipment diagnosis in the power grid infrastructure operation inspection stage, combined with the actual needs of the company for deepening the application of 3D digital resources and through collaboration, this paper analyzes the characteristics of typical GIM models, point cloud models and other multi-media heterogeneous models and their problems in the infrastructure construction and operation inspection applications; Aiming at the deficiency of GIM model in texture, material and illumination, the discrete sampling of equipment GIM model and its attitude registration method with scanning point cloud model are studied to estimate the spatial pose transformation relationship between heterogeneous models, so as to realize the refinement of GIM model; On the basis of attitude registration, a unified coordinate system is established to realize the comprehensive reconstruction of the multi-source medium model and the plant and station digital model combining appearance and internal, provide three-dimensional digital resource sharing for power grid operation and maintenance, technical transformation and overhaul, support the digital connection of three-dimensional capital construction and operation inspection resources, improve the comprehensive utilization level of three-dimensional digital resources of the company, and promote the transformation of power grid infrastructure acceptance and operation inspection operation mode.