Method for obtaining spatial distance of distribution line based on three-dimensional GIS technology

Abstract

The invention discloses a method for obtaining a spatial distance of a distribution line based on a three-dimensional GIS technology, including the steps: elevation correction is performed on the basic geographic information data within a line corridor by the industrial measurement topographic data and a three-dimensional line corridor digital scene is constructed according to the basic geographicinformation data subjected to elevation correction; and then the spatial distance calculation of the distribution line is performed. The invention can construct an accurate three-dimensional line corridor digital scene, thereby improving the calculation accuracy of the spatial distance of the distribution line and effectively shortening the spatial distance verification time.

Description

technical field [0001] The invention relates to the technical field of digital design of power distribution lines, in particular to a method for acquiring spatial distances of power distribution lines based on three-dimensional GIS technology. Background technique [0002] The spatial distance between equipment and equipment, equipment and ground objects in distribution network engineering is an important data in the design of distribution lines. The accuracy of spatial distance plays a key role in the design of distribution lines. High-voltage lines often require higher spatial distance accuracy. In addition, with the improvement of the voltage level and the expansion of the scale of the power grid, the application of three-dimensional GIS (Geographic Information System) technology in the power grid is becoming more and more extensive. The precision requirements are getting higher and higher. However, in the traditional design mode, the design of distribution lines uses th...

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Problems solved by technology

However, in the traditional design mode, the design of distribution lines uses the plane section diagram to draw the sag of the ground wire, and simulates the ground wire by projecting the sag of the ground wire to the center section of the line, and uses a limited number of associated two-dimensional projection diagrams to Explain all the design requirements. This method cannot comprehensively consider the influence of cross-arm width, wind deflection and other factors on the posture of the ground conductor in the two-dimensional graphics, resulting in low accuracy in the calculation of the spatial distance of the distribution line, which cannot meet the existing design requirements.

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