A 3D Modeling Method for Substations Based on Oblique Photography

Substation is the key part to ensure the normal operation of power system. A real, accurate and highly scalable 3D realistic simulation model of substation is the realistic basis for building a digital and intelligent power system, virtual reality simulation training system and augmented reality field-aided analysis system. In this paper, a simple and effective method for 3D modeling of substations is proposed. Acquisition of image data in two aerial shots. First, the image data is collected above the substation through oblique photography, and then the UAV is flown manually to collect close electrical equipment image data in the substation. The image data obtained from both times are imported into ContextCapture separately, and the high-density point cloud is obtained by aerial triangulation separately, and then the two high-density point clouds are fused to reconstruct a high-quality 3D model of the substation. The result proves that, compared with the conventional oblique photography method, the 3D model of substation built by the proposed method is completer and more accurate, and the model of electrical equipment has fewer defects, which meets the requirements in practical applications.