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Method for calculating tree cutting area in tree barrier hidden danger area of power transmission line

A technology of transmission lines and calculation methods, applied in calculation, re-radiation of electromagnetic waves, radio wave measurement systems, etc., can solve problems affecting the normal operation of the power grid, waste of manpower, material resources and financial resources, etc., to avoid workload, save costs, high precision effect

Inactive Publication Date: 2019-08-30
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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Problems solved by technology

At present, the method of cutting down trees is used to eliminate the existing tree obstacles, but the short transmission lines can reach several kilometers, and the long ones can reach hundreds of kilometers, and the length of some inter-provincial lines can even reach thousands of kilometers. It will cause waste of human, material and financial resources because the arrangement of personnel and equipment exceeds what is needed, and insufficient arrangement will affect the normal operation of the power grid

Method used

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  • Method for calculating tree cutting area in tree barrier hidden danger area of power transmission line
  • Method for calculating tree cutting area in tree barrier hidden danger area of power transmission line
  • Method for calculating tree cutting area in tree barrier hidden danger area of power transmission line

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Embodiment 1

[0039]Use the laser radar equipment to scan the transmission line to obtain the laser point cloud data of the transmission line; then the laser radar point cloud data obtained by scanning is preprocessed by tower determination, block division, and classification, and then through manual interaction to correct the wrong ones Classification, to complete the fine classification work.

[0040] Perform instantaneous analysis to obtain point cloud data of dangerous points, choose such as figure 1 and figure 2 Based on the data of the transmission line tree barrier hidden danger area shown in the figure, the area to be felled is calculated.

[0041] Obtain the minimum polygon around the dangerous point point cloud data. To obtain the minimum polygon around the dangerous point, use the Alpha-Shapes algorithm, first project all the dangerous points to the plane coordinate system, and get the dangerous point set P, from any point P in the point set 1 At the beginning, select all the ...

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Abstract

The invention, which relates to the technical field of power system monitoring, discloses a method for calculating a tree cutting area in a tree obstacle hidden danger area of a power transmission line. The method includes the following steps: S1, scanning the power transmission line by using a laser radar device to obtain laser point cloud data of the power transmission line; S2, preprocessing the laser point cloud data obtained in the step S1, realizing fine classification of the data through manual interaction, and extracting tree obstacle hidden danger point data; S3, extracting a tree barrier hidden danger point boundary to obtain a minimum polygon of a hidden danger area; S4, dividing the minimum polygon in the step S3 into a plurality of triangles; and S5, solving the sum of the triangular areas in the step S4 as the area of the tree barrier hidden danger area.

Description

technical field [0001] The invention relates to the technical field of electric power system monitoring, in particular to a method for calculating the area of ​​tree felling in a tree-block hidden danger area of ​​a power transmission line. Background technique [0002] With the development of the economy, the scope of transmission lines is expanding, and the number of forests, farmland and other wooded areas is also increasing. The safety hazards brought by trees to transmission lines are also becoming more and more serious. The probability of ground faults affects the normal operation of the power grid and seriously affects our daily life. [0003] Removing hidden dangers of tree barriers has always been a key and difficult task for operation and maintenance units to ensure the safe operation of power facilities. At present, the method of cutting down trees is used to eliminate the existing tree obstacles, but the short transmission lines can reach several kilometers, and...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/62G01B11/00G01S7/48G01S17/89G06Q10/06G06Q50/06
CPCG06T7/0004G06T7/62G06Q10/0635G06Q50/06G01S7/4802G01S17/89G01B11/00G06T2207/10044G06T2207/30184
Inventor 张兴华姜诚李庭坚陈佳乐罗望春张福
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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