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Lead obstacle safety distance detection method considering tree lodging

A technology of safety distance and detection method, applied in the field of safety distance detection of wire obstacles considering tree lodging

Inactive Publication Date: 2018-01-26
广东电网有限责任公司机巡作业中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This problem is extremely prone to occur under typhoon conditions

Method used

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  • Lead obstacle safety distance detection method considering tree lodging
  • Lead obstacle safety distance detection method considering tree lodging
  • Lead obstacle safety distance detection method considering tree lodging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 2 As shown, a safety distance detection method for wire obstacles considering tree lodging includes the following steps:

[0019] S1: Measure the distance of the power wire and its surrounding environment through the laser radar, and convert the measurement result into spatial coordinates;

[0020] S2: Filter and classify the point cloud data representing the spatial coordinates, and separate the wire points, vegetation points and ground points.

[0021] S3: For each point on the wire, take a plane perpendicular to the direction of the wire, and calculate the distance Lg from the wire point to each ground point g in the plane; if the allowable safety distance of the wire is L, then when considering the fall of trees, the The allowable tree height h at the ground point g is Lg-L;

[0022] S4: Take the highest tree point in the vertical direction at the ground point g, calculate the distance ht, and take it as the height of the tree;

[0023] S5: Determ...

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Abstract

The invention provides a lead obstacle safety distance detection method considering tree lodging. Distance measurement of an electric power lead and the surrounding environment is carried out througha laser radar, and the measurement result is converted into space coordinates; for each point on the lead, a plane perpendicular to the lead direction is selected, and distances Lg from the lead points in the plane and each ground point g are calculated; the permitted lead safety distance is set to be L, when tree lodging is considered, permitted tree height h at the ground point g is Lg-L; the farthest tree point in the vertical direction from the ground point g is selected, and the distance ht is acquired through calculation and is taken as height of a tree; the relationship between the ht and the h is determined, when the ht is greater than the h, the tree at the point is determined to be in an unsafe state, otherwise, the tree at the point is determined to be in a safe sate. The methodis advantaged in that when a tree safe distance is detected, influence of tree lodging on the safe distance is considered, a safe distance accounting problem is solved when tree lodging is possible,and safety of power transmission lines under the extreme typhoon conditions is guaranteed.

Description

technical field [0001] The invention relates to the field of power transmission line patrol inspection, and more specifically, to a method for detecting a safe distance of wire obstacles in consideration of tree lodging. Background technique [0002] Lidar is a device that uses lasers to measure distance, and restores the distance of multiple measurement points to spatial coordinates, and finally realizes the spatial restoration of the surrounding environment. In the operation and maintenance of transmission lines, the distance between the conductor and surrounding objects such as trees and buildings is an important management content that affects the safety of power transmission and social personnel. Because the data results collected by the lidar have high data accuracy, the results can be used to detect whether the distance of the wire to the trees and the ground meets the safety requirements. [0003] When performing safety distance detection, the calculation method is ...

Claims

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Application Information

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IPC IPC(8): G01S17/08
Inventor 许志海张峰陈浩翟瑞聪廖如超
Owner 广东电网有限责任公司机巡作业中心
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