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Visual detection method of ice coating thickness of overhead lines

A technology of ice coating thickness and visual detection, applied in the field of machine vision and power system online monitoring, can solve the problems of increasing workload, achieve low cost, realize automatic safety monitoring, and have great social significance

Inactive Publication Date: 2009-10-14
HUNAN UNIV
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  • Summary
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  • Description
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Problems solved by technology

This method requires manual intervention, increasing the workload of people

Method used

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  • Visual detection method of ice coating thickness of overhead lines
  • Visual detection method of ice coating thickness of overhead lines
  • Visual detection method of ice coating thickness of overhead lines

Examples

Experimental program
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Embodiment 1

[0031] Embodiment 1 (single overhead wire)

[0032] The present invention obtains the current image of the overhead line through a fixed-focus camera with a pan-tilt installed on the site iron tower or pole, and wirelessly transmits the image to the monitoring center through the GPRS network. Among them, the camera is installed above the overhead line, the optical center line of the camera is parallel to the projection of the overhead line in the horizontal plane, the optical center extension line of the camera and the projection of the overhead line in the horizontal plane form an angle of 30-60°, looking down on the overhead line, By adjusting the pan / tilt, the overhead line is basically in the middle of the imaging area of ​​the camera, such as figure 1 shown.

[0033] Then, after relevant processing of the acquired grayscale image, the ice thickness of the overhead line is calculated, and the steps are as follows:

[0034] 1. For the acquired overhead line grayscale imag...

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Abstract

The invention provides a visual detection method of the ice coating thickness of overhead lines. The method comprises the steps as follows: 1) dividing areas to obtain the area where the overhead line in the picture is located; and 2) carrying out statistics on the pixel number of a single row occupied by a single overhead line in the picture and converting into the thickness of ice coating according to a proportion relation. The invention requires no establishment of precise mathematical model, and can fast and automatically realize the detection of the thickness of the ice coating.

Description

technical field [0001] The invention belongs to the field of machine vision and on-line monitoring of power systems, in particular to a visual detection method for the ice thickness of overhead lines. Background technique [0002] As a special meteorological condition, ice and snow have seriously affected the safety of many overhead lines around the world. In 1932, the first recorded icing accident of overhead wires occurred in the United States; in January 1998, Quebec, Ontario and other provinces in Canada encountered unprecedented ice storm accidents, and serious ice and snow accidents occurred in Russia, France, Iceland and Japan. Affected by the climate and other factors in our country, ice disaster accidents also occur frequently. At the beginning of 2008, there was a large area of ​​snowfall in southern my country, and the icing on overhead lines caused a large number of serious accidents such as tripping, power outages, falling poles (towers), and broken wires, posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06G06K9/36
Inventor 王耀南朱江许海霞余洪山谭磊万琴聂鑫胡淼
Owner HUNAN UNIV
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