3D Simulation Modeling And Visualization Of Substation Based On Unity3D

As the core content of transmission network construction,the complex power lines and complex structure of substation equipment bring great challenges to the management and maintenance of substation equipment information.3D GIS(3D Geographic Information System)is gradually applied to the visual management of power transmission and transformation projects with its good spatial representation and spatial analysis capabilities.With the gradual increase in the scale of substation construction and the types of power transmission and transformation components,it is difficult to meet the needs of massive 3D data rendering in substation visual management only by upgrading the computing and storage capabilities of computers.Optimal scheduling of 3D scene data is an indispensable means to improve rendering efficiency.In view of the lack of intuition when displaying parts information in a 2D way and the difficulty of rendering 3D model data in most substation information management,this paper takes substation as the research object,and studies the construction of the 3D model,scene management,visualization optimization and management system development.The specific research contents are as follows:(1)Substation three-dimensional simulation model construction.This paper analyzes the current 3D modeling method with substation as the research object.Combined with the requirements of simulation model construction,the geometric entity modeling method is selected.According to the characteristics of the component model in the substation and the3 D modeling specification,combined with the design data such as drawings and equipment pictures,the hierarchical modeling scheme is designed for the whole substation scene model.Finally,the modeling work is completed in 3ds Max.(2)Substation scene management algorithm.Aiming at the problems of traditional loose octree structure in substation scene management,based on the collision detection technology in Unity3 D,the algorithm flow of loose octree node division is optimized.The optimized algorithm further determines the relative position of the object bounding box center and the node center,and then selects more suitable nodes for storage,which improves the accuracy of substation scene management.(3)Substation 3D scene visualization optimization.Based on an in-depth study of substation scene management,combined with the dynamic LOD(Level of Detail)technology,a dynamic scheduling rendering method of substation scene model based on loose octree is proposed.This method takes the line-of-sight as the constraint condition,index the loose octree nodes from top to bottom,dynamically simplifies the objects in the eligible nodes to the corresponding LOD level,reduces the amount of model data participating in the rendering,and improves the rendering rate of the 3D scene of the substation.(4)Substation 3D visualization management system design and application.Based on the dynamic scheduling and rendering of the substation scene model,the requirements and shortcomings of the current substation equipment information management are analyzed.Based on the Unity3 D platform and the My SQL database,the 3D visualization management system of the substation is developed.Interactive management functions such as roaming from different perspectives,visual information management,equipment maintenance information query,and equipment cognition are designed to visually display the components,specific information,and operation status of each device.Finally,taking the constructed 3D simulation model of the substation as an example,the effectiveness of dynamic scheduling rendering of the substation scene model based on loose octree and the feasibility of various functions of the system are verified,and the operation and management efficiency of the substation is improved.