基于GIS的线路覆冰数据空间分析及建模

摘要

介绍基于GIS技术的空间分析方法和模型构建工具，根据电力覆冰采样数据，结合地形高程及区域气候等影响因素，计算覆冰值，并用空间插值分析方法得到整个区域内覆冰栅格图；根据冰区区间划分原则，最终得到冰区分布GIS矢量要素图，为电网规划设计及安全运行服务。%This article introduces the progress of calculating icing value base on the sampling icing data of transmission line, the DEM and the factor of region-climate, using GIS Spatial Analyst tools and modeling tools, and Then we can obtain a regional Raster map of ice value by Spatial Interpolation Analyst; After that, according to the rule of icing area divided, we should get the GIS vec-tor layer of ice level map, serving for Electric power Design and the safe of power grid.