CN110569776A - method for screening faults of power transmission and distribution line after typhoon disaster - Google Patents
method for screening faults of power transmission and distribution line after typhoon disaster Download PDFInfo
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- CN110569776A CN110569776A CN201910817233.3A CN201910817233A CN110569776A CN 110569776 A CN110569776 A CN 110569776A CN 201910817233 A CN201910817233 A CN 201910817233A CN 110569776 A CN110569776 A CN 110569776A
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- 238000001931 thermography Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 10
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Abstract
the invention discloses a method for screening faults of power transmission and distribution lines after typhoon disasters, which comprises the following steps of 1, setting flight paths and corresponding parameters of a fixed-wing unmanned aerial vehicle; step 2, carrying a visible light camera by using the fixed wing unmanned aerial vehicle to obtain a high-resolution visible light photo of the ground of a path where the fixed wing unmanned aerial vehicle passes and a power transmission line; step 3, after the fixed wing unmanned aerial vehicle cruises, observing the picture obtained in the step 2 and judging whether a suspicious fault area is generated; step 4, carrying a multispectral infrared thermal imaging camera by using a multi-rotor unmanned aerial vehicle to shoot infrared photos and visible light photos of towers and/or wires in a suspicious fault area at a short distance; and 5, judging whether a fault point exists in the suspicious fault area according to the infrared picture and the visible light picture in the step 4. It has the following advantages: the faults of the power transmission and distribution line after the typhoon climate are quickly and accurately screened.
Description
Technical Field
The invention relates to a method for screening faults of a power transmission and distribution line after typhoon disasters.
Background
China is in the southeast of the Asia-European continent and belongs to the typhoon-prone region. In the transmission line in coastal areas, line faults caused by typhoons account for about 30 percent of total tripping, and wind disasters of the high-voltage transmission line, which can be caused by typhoons, include jumper wires, strand breaks, short wires, string drops and even tower collapse in severe cases. In the past, the inspection of the transmission channel after the typhoon passes through the border depends on manual inspection of towers one by one, the inspection workload is large, and a large amount of manpower and resources are consumed.
The unmanned aerial vehicle is widely applied to power transmission and distribution line inspection in recent years, and compared with a conventional manual inspection method, the unmanned aerial vehicle is a more advanced and effective feasible means capable of guaranteeing the line safety. The unmanned aerial vehicle has the functions of autonomous line navigation control and automatic geographic matching control, and meanwhile, visible or infrared thermal imagery photography equipment carried by the unmanned aerial vehicle provides a more efficient method for searching for defect points of ground towers, lines, forests, insulators, hardware fittings and the like, but the visible light detection method requires high environmental visibility and can only detect surface defects; multispectral infrared detection requires that other interference heat sources are eliminated, and the real heat source can be found, so that the fault point of the power transmission and distribution line cannot be found accurately, quickly and conveniently by simply depending on a visible light detection technology or a multispectral infrared detection technology.
disclosure of Invention
The invention provides a method for screening faults of a power transmission and distribution line after typhoon, which overcomes the defects of the prior art in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The method for screening the faults of the power transmission and distribution line after the typhoon disaster comprises the following steps:
Step 1, setting a flight path and corresponding parameters of a fixed-wing unmanned aerial vehicle;
Step 2, carrying a visible light camera by using the fixed wing unmanned aerial vehicle to obtain a high-resolution visible light photo of the ground of a path where the fixed wing unmanned aerial vehicle passes and a power transmission line;
Step 3, after the fixed wing unmanned aerial vehicle cruises, observing the picture obtained in the step 2 and judging whether a suspicious fault area is generated;
step 4, according to the suspicious fault area judged in the step 3, carrying a multispectral infrared thermal imaging camera by using the multi-rotor unmanned aerial vehicle to take infrared photos and visible light photos of a tower and/or a lead of the suspicious fault area at a short distance;
and 5, comparing the heating rule and the surface temperature field distribution and temperature rise condition of the power transmission equipment in the normal operation state according to the infrared picture and the visible light picture obtained in the step 4, and judging whether a heating point caused by the fault exists in the suspicious fault area, wherein the heating point is a definite fault point.
in one embodiment: in the step 1, the flight line and corresponding parameters of the fixed-wing unmanned aerial vehicle are set through MissionPlanner software.
In one embodiment: the parameters in step 1 include the transverse overlapping rate.
In one embodiment: in the step 2, during the cruise process of the fixed-wing unmanned aerial vehicle, the working personnel pay attention to the flight state of the unmanned aerial vehicle fed back by the ground monitor at the same time, so that the cruise accuracy is ensured.
In one embodiment: in the step 3, the picture obtained in the step 2 is made into an orthophoto map through PIX4D software, and the orthophoto map is used as a basis for power pipeline inspection.
in an embodiment, in the step 2, the visible light photo is obtained by a timed photographing manner.
Compared with the background technology, the technical scheme has the following advantages:
1. in the scheme, after typhoon, the large continuous wind power is considered, the aerial general fixed-wing unmanned aerial vehicle with strong wind resistance is adopted at the initial stage, the whole line running environment is checked, the visible light camera is used for confirming whether suspicious fault areas such as tower falling, tree falling, geological disasters and the like exist, and when the environment meets the condition that the multi-rotor unmanned aerial vehicle basically has normal take-off and routing inspection, the rotor unmanned aerial vehicle with strong maneuvering capability is used for searching a plurality of base towers and close-range fault points of the conducting wires in the suspicious fault areas; the fault screening scheme is suitable for screening faults of the power transmission and distribution line after the typhoon climate passes.
2. Use unmanned aerial vehicle to patrol and examine after the typhoon disaster, whether there is suspicious fault area such as tower inversion, trees are emptyd and geological disasters with the visible light camera affirmation, reuse unmanned aerial vehicle carries on multispectral infrared imaging camera again, patrol and examine transmission equipment more meticulously, provide the visual scene information of defect or hidden danger position, can overcome the shortcoming that single spectrum detected to exist, make things convenient for artifical supplementary diagnosis and investigation, improve circuit and patrol and examine efficiency, fault identification ability and accuracy, reducible manual work alleviates intensity of labour and the degree of difficulty for the engineering progress.
drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a flowchart of a method for screening faults of a power transmission and distribution line after a typhoon disaster according to this embodiment.
Detailed Description
Referring to fig. 1, a method for screening faults of a power transmission and distribution line after a typhoon disaster includes:
Step 1, setting a flight path and corresponding parameters of a fixed-wing unmanned aerial vehicle; the flight line and corresponding parameters of the fixed wing drone, including the lateral overlap rate, can be set by the missionspanner software.
Step 2, carrying a visible light camera (a common camera) by using the fixed-wing unmanned aerial vehicle to obtain high-resolution visible light photos of the ground of a path passed by the fixed-wing unmanned aerial vehicle and a power transmission line (the visible light photos can be obtained by adopting a timing photographing mode); the visible light photo can be directly stored in a storage card of the unmanned aerial vehicle or sent to a remote terminal through remote communication and stored. During the cruise process of the fixed-wing unmanned aerial vehicle, the working personnel pay attention to the flight state of the unmanned aerial vehicle fed back by the ground monitor at the same time, so that the cruise accuracy is ensured.
step 3, after the fixed wing unmanned aerial vehicle cruises, observing the picture obtained in the step 2 and judging whether a suspicious fault area is generated; whether faults such as tower collapse, broken lines, hanging objects and the like are displayed on the visible light picture can be observed through manual naked eyes, and the fault positions are listed as suspicious fault areas. And (3) making the picture obtained in the step (2) into an orthophoto map through PIX4D software, and using the orthophoto map as a basis for power pipeline inspection.
Step 4, according to the suspicious fault area judged in the step 3, carrying a multispectral infrared thermal imaging camera by using the multi-rotor unmanned aerial vehicle to take infrared photos and visible light photos of a tower and/or a lead of the suspicious fault area at a short distance;
And 5, comparing the heating rule, the surface temperature field distribution and the temperature rise condition of the power transmission equipment in the normal operation state according to the infrared picture and the visible light picture obtained in the step 4, and judging whether a heating point caused by the fault exists in the suspicious fault area, wherein the heating point is a definite fault point, and for example, if a red heating point exists on the lead, the heating point is a fault point. The multispectral infrared thermal imaging wave band can shoot infrared spectrum images of abnormal temperature rise points with surface temperature exceeding ambient temperature, and whether heating points caused by faults exist in equipment such as a circuit, a joint, a wire clamp and an insulator can be judged from the images. When unmanned aerial vehicle suspends, infrared picture is taken a candid photograph to in preserving temperature data, infrared picture to built-in memory card or sending to remote terminal and save through remote communication.
in the scheme, after typhoon, the large continuous wind power is considered, the aerial general fixed-wing unmanned aerial vehicle with strong wind resistance is adopted at the initial stage, the whole line running environment is checked, the visible light camera is used for confirming whether suspicious fault areas such as tower falling, tree falling, geological disasters and the like exist, and when the environment meets the condition that the multi-rotor unmanned aerial vehicle basically has normal take-off and routing inspection, the rotor unmanned aerial vehicle with strong maneuvering capability is used for searching a plurality of base towers and close-range fault points of the conducting wires in the suspicious fault areas; the fault screening scheme is suitable for screening faults of the power transmission and distribution line after the typhoon climate passes.
Use unmanned aerial vehicle to patrol and examine after the typhoon disaster, whether there is suspicious fault area such as tower inversion, trees are emptyd and geological disasters with the visible light camera affirmation, reuse unmanned aerial vehicle carries on multispectral infrared imaging camera again, patrol and examine transmission equipment more meticulously, provide the visual scene information of defect or hidden danger position, can overcome the shortcoming that single spectrum detected to exist, make things convenient for artifical supplementary diagnosis and investigation, improve circuit and patrol and examine efficiency, fault identification ability and accuracy, reducible manual work alleviates intensity of labour and the degree of difficulty for the engineering progress.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (6)
1. The method for screening the faults of the power transmission and distribution line after the typhoon disaster is characterized by comprising the following steps: the method comprises the following steps:
Step 1, setting a flight path and corresponding parameters of a fixed-wing unmanned aerial vehicle;
Step 2, carrying a visible light camera by using the fixed wing unmanned aerial vehicle to obtain a high-resolution visible light photo of the ground of a path where the fixed wing unmanned aerial vehicle passes and a power transmission line;
Step 3, after the fixed wing unmanned aerial vehicle cruises, observing the picture obtained in the step 2 and judging whether a suspicious fault area is generated;
Step 4, according to the suspicious fault area judged in the step 3, carrying a multispectral infrared thermal imaging camera by using the multi-rotor unmanned aerial vehicle to take infrared photos and visible light photos of a tower and/or a lead of the suspicious fault area at a short distance;
And 5, comparing the heating rule and the surface temperature field distribution and temperature rise condition of the power transmission equipment in the normal operation state according to the infrared picture and the visible light picture obtained in the step 4, and judging whether a heating point caused by the fault exists in the suspicious fault area, wherein the heating point is a definite fault point.
2. the method for screening faults of power transmission and distribution lines after typhoon disaster as claimed in claim 1, wherein: in the step 1, the flight line and corresponding parameters of the fixed-wing unmanned aerial vehicle are set through MissionPlanner software.
3. the method for screening faults of power transmission and distribution lines after typhoon disaster as claimed in claim 2, wherein: the parameters in step 1 include the transverse overlapping rate.
4. The method for screening faults of power transmission and distribution lines after typhoon disaster as claimed in claim 1, wherein: in the step 2, during the cruise process of the fixed-wing unmanned aerial vehicle, the working personnel pay attention to the flight state of the unmanned aerial vehicle fed back by the ground monitor at the same time, so that the cruise accuracy is ensured.
5. The method for screening faults of power transmission and distribution lines after typhoon disaster as claimed in claim 1 or 4, wherein: in the step 3, the picture obtained in the step 2 is made into an orthophoto map through PIX4D software, and the orthophoto map is used as a basis for power pipeline inspection.
6. The method for screening faults of power transmission and distribution lines after typhoon disaster as claimed in claim 1, wherein: and in the step 2, a visible light photo is obtained by adopting a timing photographing mode.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379696A (en) * | 2020-11-26 | 2021-02-19 | 国网天津市电力公司 | Multi-machine multi-task multi-rotor unmanned aerial vehicle operation method for overhead transmission line |
| CN115049663A (en) * | 2022-08-16 | 2022-09-13 | 星逻智能科技(苏州)有限公司 | Unmanned aerial vehicle-based double-light fusion insulator defect detection method and system |
| CN116363537A (en) * | 2023-05-31 | 2023-06-30 | 广东电网有限责任公司佛山供电局 | Method and system for identifying hidden danger of hanging objects outside transformer substation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112379696A (en) * | 2020-11-26 | 2021-02-19 | 国网天津市电力公司 | Multi-machine multi-task multi-rotor unmanned aerial vehicle operation method for overhead transmission line |
| CN115049663A (en) * | 2022-08-16 | 2022-09-13 | 星逻智能科技(苏州)有限公司 | Unmanned aerial vehicle-based double-light fusion insulator defect detection method and system |
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