摘要： 为加快变电站三维场景可视化的加载速度，提出一种地物模型集群聚合与多叉树混合索引结构动态调度的数据组织方法。将地物模型投影生成正投影图得到集群划分子集，基于聚合度函数聚合集群后的地物模型，利用多叉树混合结构建立索引并动态调度生成场景树进行三维展示。对特高压输变电工程案例进行三维测试的结果表明，集群聚合地物模型和动态调度多叉树混合索引结构能够提高三维输变电场景的加载速度，可有效支撑电网工程数字化移交中三维场景交互可视化的应用。

关键词: 数字化移交, 多叉树混合索引结构, 细节层次模型, 地物模型, 聚合度函数

Abstract: In order to accelerate the loading speed of three-dimensional visualization scene of substation,this paper proposes a data organization method based on the clustering and aggregation of ground object model and the dynamic scheduling of n-ary tree hybrid index structure.First,the orthographic map of the ground object model is formed and its clustering is achieved.Then,the clustered ground object model is aggregated by the aggregation degree function.Then,the index is built by utilizing the n-ary tree hybrid structure,and so is the three-dimensional display by dynamic scheduling.The three-dimensional test of a UHV power transmission project shows that the clustered aggregated ground object model and the dynamic scheduled n-ary tree hybrid index structure can improve the loading speed of three-dimensional power transmission scene,and effectively support the application of three-dimensional scene visualization in the digital handover of power grid engineering.

Key words: digital handover, multi-fork tree hybrid index structure, Level of Detail(LOD) model, ground object model, aggregation degree function

中图分类号: 

• TP391