A method for calculating critical points of transmission lines based on laser point cloud radar data

Abstract

The invention discloses a method for calculating a dangerous point of a transmission line based on laser point cloud radar data, which comprises the following steps: collecting laser point cloud radardata and performing data preprocessing; automatic classification of the pre-processed point cloud data; the power line point cloud data being segmented according to the length of each segment by 1 meter, and the middle point of each segment being taken as the characteristic point; building Octree Index in Non-Power Line Point Cloud Data; setting a safety distance, the safety distance comprising ahorizontal distance, a vertical distance and a clearance distance; taking the characteristic points as the searching points, the nearest neighbors within the radius of the non-power line point clouddata being searched to find out the dangerous points. The invention solves the technical problems that the prior art calculates the dangerous point of a transmission line, collects data by a worker onthe spot, judges artificially by naked eyes or experience, and cannot accurately obtain the distance between the dangerous point and the transmission line, the operation efficiency is not high, the human cost is large, and the real-time property is not strong, etc.

Description

technical field

[0001] The invention belongs to a dangerous point monitoring technology in a power transmission line, in particular to a method for calculating a dangerous point in a power transmission line based on laser point cloud radar data. Background technique:

[0002] Most of the non-ground points in the transmission corridor are vegetation points. Due to its own growth characteristics and irregular shape division, the vegetation is difficult to collect and measure data, which is one of the factors that most affect the safety of transmission lines.

[0003] The traditional calculation of dangerous points on transmission lines often requires staff to go to the site to collect data, and use the naked eye or experience to judge whether they meet the "Operation Regulations for Overhead Transmission Lines". This kind of operation is not efficient, has high labor costs, and is not real-time. Invention content:

[0004] The technical problem to be solved by the present i...