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A laser point cloud classification method for cross-span analysis of transmission lines

A technology of crossing over and transmission lines, applied in the field of electric power, can solve the problem of large measurement error and so on

Active Publication Date: 2020-10-20
GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the intersection point is expected to be invisible to the ground and it is difficult for surveyors to reach it, the measurement error is relatively large

Method used

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  • A laser point cloud classification method for cross-span analysis of transmission lines
  • A laser point cloud classification method for cross-span analysis of transmission lines
  • A laser point cloud classification method for cross-span analysis of transmission lines

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Experimental program
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Embodiment

[0039] refer to figure 1 As shown, it is a flow chart of the laser point cloud classification method for cross-over analysis of power transmission lines provided in this embodiment, and the method specifically includes:

[0040] S1, base station erection

[0041] In order to meet the requirements of airborne laser scanning data collection, it is necessary to deploy ground GPS base stations along the line. At the same time, checkpoints are arranged in the middle of the connected base stations to check the accuracy of the base stations.

[0042] The GPS base stations are laid out in accordance with the requirements of the C-level GPS network. The base station layout is carried out in the form of a triangular network. The triangular network has a strong geometric structure and good self-inspection ability, and can effectively detect gross errors in the observation results to ensure the reliability of the GPS network. sex. The GPS base stations are laid out along the line. The ...

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PUM

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Abstract

The invention discloses a laser point cloud classification method for transmission line crossover analysis. The method includes S1, base station erection; S2, flight planning; S3, POS calculation; S4, point cloud data generation; S5, point cloud Data denoising; S6, point cloud filtering; S7, point cloud classification of power facilities based on topological constraints; S8, power line model reconstruction; S9, determining whether ground objects are dangerous. This method has high computational efficiency, good adaptability to transmission facilities of different voltage levels, and relatively high classification accuracy. It also has good classification accuracy for transmission and distribution lines. The overall solution cost and laying complexity are relatively low. Low. Automatic classification based on laser point cloud can effectively extract transmission line crossing points, providing data and decision-making basis for the analysis of crossing hidden dangers.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a laser point cloud classification method for cross-over analysis of power transmission lines. Background technique [0002] The traditional "three-span" inspection of transmission lines mainly uses manual inspection to determine whether there is any, and then uses high-precision instruments such as altimeters and theodolites to carry out measurements by selecting points. In order to ensure the accuracy of the cross-span measurement, the objects to be crossed are first divided into grades of roads, railways, other power, communication lines, river networks, houses, trees, and then several measurements are selected in the cross-span area according to different types Points are measured and calculated using altimeters, theodolites and other equipment. When the ground in the estimated area of ​​the intersection point cannot be seen through and it is difficult for surveyors ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/42G01S7/48G06T17/05G06T5/00
CPCG06T17/05G01S7/4802G01S19/42G06T2207/10028G06T5/70
Inventor 郑武略张富春李伟性汤杰谢守辉袁振峰罗凯张裕贵范敏陈浩张礼昌吴阳阳贾培亮
Owner GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION