摘要：Graphics can not display clearly the surrounding environment of power distribution equipment in the traditional two-dimensional GIS of distribution grids. Aimed at above shortages, this paper proposes an auxiliary design system for rural power grids based on 3D GIS. The system is developed based on component SuperMap to the GIS, the commercial relational database SQLServer 2008 and the object oriented programming language Visual C# in the secondary development. The paper introduce the methods to establish three-dimensional model and attributed database, and analyze the process how to use the existing contours map to produce digital elevation model (DEM). It describes simply the hierarchy structures and flow chart of system development. The system is better able to query data when two dimensions and three dimensions are combined, it can analyze the three-dimensional space, automatically plot the cross-section drawing along any given geo-path of distribution lines, calculate the total length of overhead lines under one weather condition.
关键词：rural power grids;3D GIS;DEM;cross-section drawing
