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A method for automatic measurement of icing thickness of conductors of high-voltage transmission lines

A technology for freezing high-voltage transmission lines and wires, which is applied to measurement devices, instruments, and optical devices, etc., can solve the problems of inaccurate measurement values ​​of ice accretion thickness, and achieve the effect of improving measurement efficiency and measurement accuracy.

Active Publication Date: 2019-12-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, this technology uses the method of fixed-point staring observation to collect image data, and the measurement results only reflect the local ice accumulation situation; a reference object of known size is required as a calibration object for measuring the thickness of ice accumulation. When the pixel distance measurement of the calibration object is not accurate icing thickness measurements will also be inaccurate

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  • A method for automatic measurement of icing thickness of conductors of high-voltage transmission lines
  • A method for automatic measurement of icing thickness of conductors of high-voltage transmission lines
  • A method for automatic measurement of icing thickness of conductors of high-voltage transmission lines

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Embodiment Construction

[0048] The present invention will be further explained below in conjunction with the drawings.

[0049] The present invention solves the problems in measuring the thickness of ice accretion on transmission lines, including: 1) improving the measurement accuracy of ice accretion thickness; 2) distinguishing that the previous measurement is limited to a local area, the present invention reflects the ice accretion at various positions of the transmission line through mobile measurement 3) Through visual processing technology, the measurement result is presented as the thickness parameter of a continuous area, and the details of the local ice thickness at different positions of the transmission line are analyzed.

[0050] The present invention takes the drone as the carrier, carries the binocular stereo vision system, collects binocular sequence image data by cruising along the transmission line, extracts and matches line features, and uses baseline calibration parameters for triangulat...

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Abstract

The invention provides an automatic measuring method for the icing thickness of a wire of a high-voltage transmission line. According to the automatic measuring method, an unmanned aerial vehicle is used as a carrier, a binocular stereo vision system is carried, and binocular sequence image data are collected through cruising flight along the transmission line; and through line feature extractionand matching, binocular baseline stereo calibration parameters and matching pixel pairs are used for conducting trigonometric survey, three-dimensional width measurement values of the upper and loweredges of the transmission line are obtained, the measurement values are compared with the actual design width of the transmission line, and the icing thickness value is obtained through differences. The technology performs fast cycle measurement by means of unmanned aerial vehicle cruising, and combined with a data processing method, the automatic measuring method is greatly improved on the aspects of measurement efficiency and measurement accuracy compared with prior measuring methods.

Description

Technical field [0001] The invention relates to the field of measuring the thickness of ice accretion on transmission lines, in particular to a method for automatically measuring the thickness of icing on high-voltage transmission lines. Background technique [0002] Under cold weather conditions in northern my country, because of rain and fog condensing on the wires or wet snow freezing on the wires, wire ice will form, which is also called wire crawling. If the ice accumulation exceeds the design standards for high-voltage overhead power transmission lines, accidents such as wire breakage and telegraph pole collapse will occur, causing circuit interruption and power grid line damage, bringing troubles and immeasurable economic losses to people's lives. Accurate detection of icing on power lines is of great significance not only for guiding the prevention and control of icing disasters on transmission lines, but also for risk zoning of icing on power lines based on climate data,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/06
CPCG01B11/06
Inventor 李明磊
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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