Analysis of Microterrain Data Based on GIS and Applied to Power Grid Layout

With the rapid development of economy and electronic information industry, demand for electricity is getting higher. As a basic project, reasonable point layout power grid becoming more important. Topographic elements are key factors affecting layout. However, actual terrain complex changeable, so it urgent to quantify all kinds topographic provide reference Based on three-dimensional GIS technology, this paper provides factor algorithm with controllable variables obtains such as slope, aspect, slope position, underlying surface type roughness different accuracy according terrain, outputs data format in accordance specification decision support At same time, study can also other decision-making works that rely elements.