Research and Implementation of 3D Visualization Technology Based on GIM Model

In this paper, GIM model / 3D display, virtual reality and information integration technology is combined to put forward a four-layer framework of urban power grid 3D spatial visualization information platform. Through data analysis, parameter modeling, model assembly, model optimization and attribute warehousing, the system converts GIM model into a general standard 3D model file FBX, which reduces the data amount of the model to a large extent. The reconstruction and optimization of GIM model are realized. The platform integrates engineering information, geographic information, digital models and documents throughout the whole process of engineering construction to complete the application of three-dimensional digital handover. Finally, the application of 3D model in the secondary system simulation analysis, online monitoring and fault diagnosis is realized with the actual 220kV smart substation as the pilot. The simulation results show that this technology can effectively improve the efficiency of three-dimensional design, operation and maintenance of secondary system.