The Research And Design Of Overhead Line Aided Design System Based On Geographical Information System

Overhead line design plays an important role in electricity grid building and has been paid more attention by electricity construction department. As the investment of overhead line building and rebuilding has been strengthened, it has made higher demand to speed, quality, accuracy and economy of line design. In order to make overhead line run safely and reliably, accurate calculation, economical and rational design, high-quality construction and daily run and maintenance all play an important part. It can reduce project construction cost and line loss, make sure of project quality, so that make equipment running safely and improve economy benefit. However, transmission and distribution line design procedure relates to measure, mechanics calculation, climate condition and electric computation and other facet diverse subject computation and the quantity of computation is large. It is a complicated and fussy job and is one of the difficulties of electric power project design.At the present time of electric power development rapidly, standardizing electric power design, advancing the level of design and management and shortening the periods of design effectively have already become important measures of strengthening the competitive ability in each electric power designing enterprise. As a result, the system has made overhead line design and geographical information system combined tightly and developed integrative information flat in order to deal with the scientific, standardized, and integrated problem and meet large-scale electric power grid development demand of overhead line design at present. At the same time, the system has adopted geographical information system flat and analysis measure to make overhead line design flat with processing capability of geographic information.The development of overhead line aided design system based on geographical information system has remedied the deficiency of traditional overhead line design. It is based on geographical information system flat, it has researched how to use the digital elevation model(DEM) to obtain the elevation information, and it has setup database according to terrain information of overhead line distributing area, attribute and special data in electric power grid and parameter data of overhead line design. It has made array pole more intuitively and disposal line more scientifically after the implement of lead mechanics calculation of analysis. At the same time, it has strengthened alternating function of database. It has made overhead line aided design system modularization come true by overhead line design function partition and made overhead line design and line diagram management combined effectively. Consequently, this system has made not only overhead line design and management but also overhead line attribute and spatial data unified.