Abstract: With the increasing number of power construction and renovation projects, the current system cannot visually display the actual layout of the station, effectively survey and map distance measurement, and guide the construction plan compilation and review is limited.Perform spatial twin modeling of substations, and use 3D modeling software to realize one-key ranging, panoramic surround and other functions in the model to reduce the frequency of staff going to the station.Improve the communication efficiency of various departments in the construction plan preparation and discussion link, visualize the construction details, and focus on potential construction safety hazards as early as possible, so as to improve the quality and efficiency of production work.