Method for predicting tree barrier threat by using point cloud data in transmission line channel

Abstract

The invention discloses a method for predicting a tree barrier threat by using point cloud data in a transmission line channel, which comprises: extracting pole points, transmission line points and vegetation points by subjecting a visible image captured by a UAV during a patrol inspection of a transmission line channel to a point cloud process; taking every two adjacent base poles as a basic unit, dividing a transmission line in each basic unit into a plurality sections in a two-dimensional plane, and selecting the center point of each section as a centroid point; successively calculating thedistance from each centroid point to each surrounding vegetation edge point, and using the minimum distance as the distance between the section of the transmission line and the surrounding vegetation; establishing a safety distance threshold of the transmission line, determining whether the transmission line has a tree barrier threat according to the safety distance threshold and the distance between the transmission line and the surrounding vegetation. The method solves the defects in the prior art that an airborne laser radar is required to be mounted on a large unmanned aerial vehicle, andis expensive and inconvenient to carry.

Description

technical field [0001] The invention belongs to the transmission line maintenance technology, and in particular relates to a method for predicting tree barrier threat by using point cloud data in a transmission line channel. Background technique [0002] Overhead transmission lines are an important part of the power grid. Most of the overhead transmission lines are built in mountainous and forested areas with complex environments. The vegetation in mountainous areas sometimes poses a greater safety hazard to transmission lines. For example, when the distance between trees and transmission lines is less than the safe distance, it is easy to cause power safety accidents such as tripping and short circuit, threatening the safe and stable operation of the power system. Therefore, monitoring the safe distance of conductors is a very important task in the operation and management of transmission lines. However, the growth of trees in the vegetation is continuous throughout the ye...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method of using point cloud data in the transmission line channel to predict the threat of tree barriers, so as to solve the problem of using airborne laser radar on a large unmanned aerial vehicle in the prior art, and the laser radar equipment Disadvantages such as high price and inconvenient portability restrict the application of laser radar equipment in the field of transmission line inspection; overhead transmission lines and towers are generally built in mountainous or hilly areas with complex terrain and sparsely populated areas, which brings difficulties to power inspection work. Technical problems such as great difficulties and challenges

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