CN103837493B - Combined overhead conductor defect detection method - Google Patents

Combined overhead conductor defect detection method Download PDF

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Publication number
CN103837493B
CN103837493B CN201410094573.5A CN201410094573A CN103837493B CN 103837493 B CN103837493 B CN 103837493B CN 201410094573 A CN201410094573 A CN 201410094573A CN 103837493 B CN103837493 B CN 103837493B
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China
Prior art keywords
laser radar
image
thermal infrared
aerial condutor
wire
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CN201410094573.5A
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Chinese (zh)
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CN103837493A (en
Inventor
王进
吴章勤
孙成刚
李志翔
郑欣
刘荣海
于虹
Original Assignee
云南电力试验研究院(集团)有限公司电力研究院
云南电网公司技术分公司
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Priority to CN201410094573.5A priority Critical patent/CN103837493B/en
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Publication of CN103837493B publication Critical patent/CN103837493B/en

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Abstract

The invention discloses a combined overhead conductor defect detection method. The method comprises the following steps: acquiring a thermal infrared image, namely observing an overhead conductor at the same observation point by utilizing a thermal infrared imager; performing laser radar plotting, namely plotting the overhead conductor by utilizing laser radar plotting equipment, and acquiring plotting data and a plotting image; determining coordinates of the defect positions of the conductor, namely comparing the thermal infrared image with the plotting image, and determining corresponding global position system (GPS) position coordinates of temperature abnormality points on the overhead conductor in the thermal infrared image on the plotting image; and performing X-ray digital imaging detection. A combined detection method of the thermal infrared imaging technology, laser radar plotting technology and X-ray digital detection technology is utilized, so that defect detection of the overhead conductor is realized. Compared with a traditional detection method, the method has the advantages that the defects of the overhead conductor can be effectively detected, and the defects are judged and evaluated.

Description

A kind of aerial condutor defect associated detecting method

Technical field

The present invention relates to a kind of aerial condutor defect associated detecting method, especially one kind adopts infrared thermal imaging, laser Radar mapping and x-ray digital imagery detect the aerial condutor defect associated detecting method combining.

Background technology

Because aerial condutor is on the pylon of high-altitude, aerial condutor common detection methods are typically in operation wire is entered Row infrared thermal imaging detection or infrared measurement of temperature detection, judge wire with the presence or absence of local overheating phenomenon, but for overtemperature after Wire be difficult to the diagnosis of defect situation.

For the problems referred to above, the present invention adopts infrared thermal imaging, laser radar mapping and x-ray digital imagery detection technique The method combining is realizing the defects detection of aerial condutor.

Infrared thermal imaging is exactly the infrared radiation signal receiving measured target using Infrared Detectors, optical imagery object lens, Using electron scanning circuit, the infrared thermal imagery of measured object is swept on the photosensitive source of infrared optical system Infrared Detectors Retouch and be converted into electric signal, amplified process, conversion or video standard signal pass through TV screen or monitor shows thermal-induced imagery.

Laser radar is as transmitting light source with laser instrument, is interacted with detected thing by exploring laser light and realizes remote sensing The active remote sensing equipment of measurement.Laser radar mapping is realized to by the accurate survey of the three-dimensional data of mapping object using laser radar Amount.

X-ray digital imagery detection technique is using x-ray digital imagery testing equipment, realizes to checking matter in x-ray Digital imagery after irradiation, the internal flaw situation checking tested object of energy quicklook.

Content of the invention

For the problems referred to above, it is an object of the invention to provide a kind of aerial condutor defect associated detecting method, in order to solve The defect location of aerial condutor and test problems.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of aerial condutor defect associated detecting method, feature of present invention is to select an observation station, and this observation station can profit The whole section of observation of the aerial condutor between two neighboring shaft tower to transmission line of electricity with infrared thermography and laser radar.In this observation Point is observed to aerial condutor using infrared thermography, using laser radar mapping equipment, this aerial condutor is surveyed Paint, the aerial condutor image that the thermal infrared images then again infrared thermography being observed is surveyed and drawn with laser radar compares Right, determine that on aerial condutor in thermal infrared images, the point of temperature anomaly or section are on laser radar aerial condutor mapping image Gps position coordinate data.According to this position coordinate data, using x-ray digital imagery testing equipment, this position is detected, Judge the defect situation of this position wire by testing result.

Thermal infrared images collection in the present invention is entered to operating whole section lead using high-resolution infrared thermography Row infrared observation, and preserve the infrared thermal imaging image in the range of observation area.

Laser radar mapping in the present invention is in the same observation with thermal infrared imaging using laser radar mapping equipment Point is surveyed and drawn to same section of aerial condutor, and preserves the surveying and mapping data of wire, generates mapping image.

Wire defective locations coordinate setting in the present invention is that the conductor temperature observing in thermal infrared imaging image is different Normal point, thermal infrared images is compared with laser radar mapping image, determines that the point of temperature anomaly is surveyed and drawn in laser radar Position in image, and read the gps position coordinate parameters of this point from mapping image.

X-ray digital imagery detection in the present invention is after the defect gps position coordinates on wire determines, by x-ray Digital imagery testing equipment is positioned over this position, then carries out x-ray and shoots and observe shooting image, is judged according to image result The situation of defect.

Aerial condutor in the present invention is in running status when carrying out infrared thermal imaging observation, and is carrying out x-ray number It is in power down mode during word image checking.

Positioning on wire for the x-ray digital imagery testing equipment in the present invention is using gps equipment and according to mapping The gps position coordinates obtaining in image is positioned.

The key issue that the present invention solves:

The mechanism of the present invention is main: determine the abnormal position of the heating of operating wire using infrared thermal imaging, then profit Positioned with laser radar other side heating out-of-the way position, then recycled x-ray digital imagery testing equipment to out-of-the way position Shot, and carried out Observation of Defects, judged the situation of wire out-of-the way position.

The beneficial outcomes of the present invention: this invention utilizes infrared thermal imaging technique, laser radar surveying and mapping technology and x-ray number The associated detecting method of word detection technique, realizes the defects detection of aerial condutor, for traditional detection method, the party Method can effectively detect the defect of aerial condutor, and defect is judged and assesses.

Specific embodiment

A kind of aerial condutor defect associated detecting method, feature of present invention is,

1) thermal infrared images collection: in same observation station, using infrared thermography, aerial condutor is observed, obtains Thermal infrared images;

2) laser radar mapping: using laser radar mapping equipment, this aerial condutor is surveyed and drawn, obtain surveying and mapping data And mapping image;

3) determine wire defective locations coordinate: thermal infrared images is compared with mapping image, determines thermal infrared images Temperature anomaly point corresponding gps position coordinates on mapping image on middle aerial condutor;

4) x-ray digital imagery detection: the wire of this coordinate points is examined using x-ray digital imagery testing equipment Survey, judge the defect situation of this position wire by testing result.

Thermal infrared images of the present invention collection be using infrared thermography, operating whole section lead is carried out red External Observation, and preserve the infrared thermal imaging image in the range of observation area.

Laser radar mapping of the present invention is in the same sight with thermal infrared imaging using laser radar mapping equipment Measuring point is surveyed and drawn to same section of aerial condutor, and preserves the surveying and mapping data of wire, generates mapping image.

Determination wire defective locations coordinate of the present invention is to carry out thermal infrared images with laser radar mapping image Compare, determine the gps coordinate of conductor temperature abnormity point correspondence position in mapping image in thermal infrared images.

X-ray digital imagery detection of the present invention is to be positioned x-ray digital imagery testing equipment using gps equipment The gps coordinate of temperature anomaly position to wire, then this position is carried out with x-ray digital imagery detection.

The operating procedure of said method is schematically as follows:

One section of aerial condutor is detected, the ground of the perpendicular bisector position of two pylons of aerial condutor selects one Observation station, infrared thermography is positioned over this point, observes the infrared image of infrared thermography display screen, moves forward and backward, makes Display screen can show the whole section lead in two pylons, using this position as observation station.

Infrared thermography is placed in this point and just to wire aspect, gathers the infrared image under wire running status, And preserve image.

Take off infrared thermography, portable laser radar is placed in same observation station, then uses portable laser Radar is surveyed and drawn, and obtains mapping image and the coordinate data of this section lead, and preserves.

Infrared image and mapping image are transmitted to computer, reads infrared image and mapping respectively with corresponding program Image, observes in same screen, the position of the temperature anomaly on wire in infrared image is positioned using mapping image, Position coordinate data in observation mapping image, and record.

In line outage, portable x-ray digital imagery testing equipment is installed on wire, using gps equipment by x Digital radiography equipment positions to the temperature anomaly position observing, carries out x-ray shooting, then to shooting image Observed, judged the situation of defect.Simultaneously take account of the error of position positioning, move forward and backward x-ray near test position Equipment is simultaneously shot, and observes the defect situation of the wire of a segment length.

Claims (5)

1. a kind of aerial condutor defect associated detecting method, is characterized in that,
1) thermal infrared images collection: in an observation station, using infrared thermography, aerial condutor is observed, obtains this and make somebody a mere figurehead Wire thermal infrared images;
2) laser radar mapping: in above-mentioned same observation station, using laser radar mapping equipment, this aerial condutor is surveyed and drawn, Obtain this aerial condutor surveying and mapping data and laser radar mapping image;
3) determine wire defective locations coordinate: the thermal infrared images and laser radar mapping image of above-mentioned collection is compared, Determine temperature anomaly point corresponding gps position coordinates on laser radar mapping image on aerial condutor in thermal infrared images;
4) x-ray digital imagery detection: the wire of the gps position coordinates determining is entered using x-ray digital imagery testing equipment Row detection, judges the defect situation of this position wire by testing result.
2. a kind of aerial condutor defect associated detecting method according to claim 1, is characterized in that, described thermal infrared images Collection is to carry out infrared observation using infrared thermography to operating whole section lead, and preserves the heat in the range of observation area Infrared image.
3. a kind of aerial condutor defect associated detecting method according to claim 1, is characterized in that, described laser radar Mapping is same section of aerial condutor to be surveyed and drawn in the same observation station with thermal infrared imaging using laser radar mapping equipment, And preserve the surveying and mapping data of wire, generate laser radar mapping image.
4. a kind of aerial condutor defect associated detecting method according to claim 1, is characterized in that, described determination wire Defective locations coordinate is that thermal infrared images is compared with laser radar mapping image, determines conductor temperature in thermal infrared images The gps coordinate of abnormity point correspondence position in mapping image.
5. a kind of aerial condutor defect associated detecting method according to claim 1, is characterized in that, described x-ray number Word image checking is that the gps being positioned x-ray digital imagery testing equipment to temperature anomaly position on wire using gps equipment is sat Mark, then this position is carried out with x-ray digital imagery detection.
CN201410094573.5A 2014-03-14 2014-03-14 Combined overhead conductor defect detection method CN103837493B (en)

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CN105352981A (en) * 2015-11-16 2016-02-24 国网辽宁省电力有限公司丹东供电公司 Electric transmission line composite material tower nondestructive testing device

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