Automatic identification and classification method and device for power transmission line icing microtopography

Abstract

The invention discloses an automatic identification and classification method and device for power transmission line icing microtopography. The method comprises the following steps: according to obtained longitude and latitude of a to-be-identified power transmission line corridor, extracting elevation data corresponding to the longitude and latitude of the to-be-identified power transmission line corridor; extracting topographic factors from the elevation data; performing principal component analysis on the topographic factors to obtain an optimal discriminant factor combination through screening; performing classification by taking the optimal discriminant factor combination as a topographic factor index to obtain a basic mountain part classification result; according to a microtopography discrimination formula, carrying out reclassification on the basic mountain part classification result to obtain a microtopography classification result. For long-distance power transmission lines, especially ultra-high-voltage power transmission lines, differential ice-resistant design can be realized according to icing conditions of different types of microtopography and microclimate road sections, so that the power supply reliability and the operation economic benefits of a power grid can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of power transmission lines, and in particular relates to a method and device for automatic identification and classification of ice-covered micro-topography of power transmission lines. Background technique [0002] my country has a vast territory, large undulating terrain, and complex landform conditions. It not only has basic landforms such as mountains, hills, plateaus, basins, and plains, but also has tortuous coastlines and dotted islands. The climate in the territory is diverse and significantly affected by monsoons. The characteristics of micro-topography and micro-climate determine that my country is one of the countries most seriously affected by power grid icing accidents. [0003] Since the 1950s, countries around the world, including China, have carried out in-depth research on the icing of transmission lines. Many researchers have realized that micro-topography and micro-meteorology have a great...

AI Technical Summary

Problems solved by technology

Therefore, the existing anti-icing design of power grid transmission lines seldom considers the icing situation of lines in micro-topography and microclimate areas within 100 meters, such as high mountains, passes, canyons and other micro-topography and microclimate areas are still in the design blind spot, and line tripping caused by icing, Disconnection and even tower down incidents still occur frequently

Images