摘要
针对输变电工程三维设计模型的多源、异构和模型整合应用所导致仿真系统设计难度大且数据管理和共享困难,而目前相关研究较少的问题,提出了一种面向输变电工程三维设计模型流程化整合方案。该方案基于SuperMap10平台和行业通用格式,采用模型层级分类、三维缓存技术、几何细节层次(levels of detail, LOD)优化体系和纹理优化等方法,设计出面向不同特性的三维设计模型与GIS数据融合方案。实验结果表明,该方案能在保证模型坐标系、属性和语义完整的同时,将不同三维模型格式的电力模型进行了统一,将有利于电力仿真系统的设计实现和进行电力数据协同分析;结合数据实际情况分析,对模型顶点和面进行针对性优化方法,使表面模型的数据量下降95%左右,并采用LOD模型构建和对场景进行三维缓存切片来控制场景性能,渲染时间较优化前减少约1倍;利用GIS软件二次开发接口,实现方案的流程化处理,大大减少了传统模式所需的人力资源。
Aiming at the problems that the multi-source, heterogeneous and model integration application of 3 D design models of power transmission and transformation engineering leads to the difficulty of simulation system design and the difficulty of data management and sharing, and there are few relevant researches at present, a process integration scheme for 3 D design models of power transmission and transformation engineering is proposed. Based on the SuperMap10 platform and a common format in the industry, this solution uses model level classification, 3 D cache technology, levels of detail(LOD)optimization system and texture optimization methods to design 3 D design model and GIS data fusion solution for different characteristics. The experiment shows that the proposed scheme can ensure the integrity of the model coordinate system, attributes and semantics, and unify the power models of different 3 D model formats, which will be beneficial to the design and implementation of power simulation systems and collaborative analysis of power data. Combined with the analysis of the actual data, targeted optimization methods for model vertices and faces are used to reduce the data volume of the surface model by about 95%.The performance of the scene is controlled by using LOD model construction and 3 D cache slicing of the scene, and the rendering time is reduced by about one times compared to before optimization.The secondary development interface of GIS software is used to realize the programmatic processing of the plan, greatly reducing the human resources required by the traditional model.
作者
陈辰
简季
杨鑫
文兵
聂俊阳
CHEN Chen;JIAN Ji;YANG Xin;WEN Bin;NIE Jun-yang(Ministry of Land and Resources Key Laboratory of Geoscience Spatial Information Technology,Chengdu University of Technology,Chengdu 610059,China)
出处
《计算机技术与发展》
2021年第6期181-185,共5页
Computer Technology and Development
基金
国家自然科学基金项目(41771444)。
关键词
输变电
三维设计模型
模型整合
几何细节层次
数据融合
power transmission and transformation
3D design model
model integration
levels of detail
data fusion
