CN114324070A - Outdoor detection method, recording medium and system for surface hydrophobicity of high-voltage bushing umbrella skirt - Google Patents
Outdoor detection method, recording medium and system for surface hydrophobicity of high-voltage bushing umbrella skirt Download PDFInfo
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- CN114324070A CN114324070A CN202111507896.9A CN202111507896A CN114324070A CN 114324070 A CN114324070 A CN 114324070A CN 202111507896 A CN202111507896 A CN 202111507896A CN 114324070 A CN114324070 A CN 114324070A
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Abstract
The invention relates to the field of insulating material detection, in particular to an outdoor detection method for the surface hydrophobicity of a high-voltage bushing shed, which comprises the following steps: adopt electronic dropping liquid pipe, to the single liquid drop of full skirt surface drippage, utilize two binocular cameras of opposite arrangement to obtain the situation of spreading of liquid drop on the full skirt surface, the liquid drop adds green dyeing agent, and the inside monochromatic ruddiness that adopts of testing arrangement simultaneously shines, and single test adopts four droppers to test simultaneously in order to obtain the multiple spot hydrophobic performance and reduce measuring error, finally realizes the hydrophobic detection work of outdoor environment lower surface. The method overcomes the defect of poor accuracy of an online monitoring image of the existing water spraying grading method, makes up for the loss of outdoor contact angle measurement on the surface of the material, and realizes the surface hydrophobicity detection of the umbrella skirt in the outdoor environment. The invention also provides a non-transient readable recording medium storing the program of the method and a system comprising the medium, wherein the program can be called by a processing circuit to execute the method.
Description
Technical Field
The invention belongs to the technical field of insulating material detection, and discloses an outdoor detection method for the surface hydrophobicity of a high-voltage bushing shed, a recording medium and a system which are stored with a program capable of executing the method.
Background
With the rapid development of the national industrial system and the continuous increase of the power demand in China, the large range of high-voltage transmission is expanded, a large number of high-voltage bushings are used in nearly ten years, and the corresponding increase of the operation parameters and the environmental pollution are intensified, so that the number of the umbrella skirts of the high-voltage bushings is increased. Under such a complex environment, the surface properties of the shed are susceptible to several factors: (1) dirt deposition is influenced by the environment, dirt accumulation is easy to generate on the surface of the umbrella skirt after the umbrella skirt is exposed to the atmospheric environment for a long time, the dirt accumulation rate is influenced by regional climate, and the dirt deposition rate is higher in a severely polluted local area; (2) the moisture and humid environment is easy to generate condensation on the surface of the umbrella skirt, and condensed dew facilitates the agglomeration of deposited dirt, so that the dirt has conductive performance; (3) and (5) low temperature. The Brownian motion of molecules in the umbrella skirt insulating material is reduced at low temperature, and the quantity of LMW molecules which are moved out of the composite insulator to the surface to wrap dirt is reduced, so that the hydrophobicity and the hydrophobic mobility of the insulator are reduced at low temperature; (4) and (5) aging. With the extension of the operation time, the insulator is blown by wind, rain and sunshine, and simultaneously, under the action of local high temperature, humidity, corona and mechanical stress of the sleeve, the surface material can generate the phenomena of surface hardening, pulverization and the like, and finally, the deterioration and the aging of the components of the insulating material are brought; under the action of the factors, the surface material of the umbrella skirt has obvious hydrophobic performance deterioration, and the hydrophobic performance deterioration enables the pollution flashover resistance of the umbrella skirt to be reduced, so that the frequent occurrence of transformer accidents is caused, and the safe operation of a power system is seriously threatened. The sleeve can be replaced and the dirt can be removed in time, so that the accidents can be prevented and reduced. Therefore, the method is especially important for accurately, conveniently and reliably monitoring the hydrophobicity and the operation condition of the transformer bushing.
At present, the methods for measuring the hydrophobicity mainly include a static contact angle method, a surface tension method and a Hydrophobicity (HC) Classification method at home and abroad. At present, a water spray classification method proposed by the Swedish Transmission Research Institute (STRI) is widely adopted on the site. The method divides the hydrophobicity of the surface of the composite insulator into 7 grades and gives classification criteria and standard pictures. In the test process, spraying water mist on the surface of the insulator sample by using a common watering can, observing the distribution condition of the water on the surface of the sample, and comparing the distribution condition with a standard picture to obtain the hydrophobicity grade of the insulator. The water spraying classification method is simple to operate and low in equipment requirement, so that the water spraying classification method becomes a main method for online monitoring of the composite insulator, but has large subjective dependence on people. In recent years, a water spraying classification method combined with image processing provides a basis for quantitatively judging the hydrophobicity grade of the insulator. The water spraying classification method is combined with the image processing, and the first step is to accurately extract water drops or water traces in the insulator hydrophobicity image. The hydrophobic image has low contrast and uneven illumination, the image processing difficulty is increased due to the defects of edge deletion, shadow, reflection, adhesion, dirt and the like of water drops, and the extraction of image characteristic parameters is wrong. And the surface tension measurement method cannot be carried out in an outdoor environment due to the bubble environment requirement in the measurement process. The static contact angle measurement is different, and the method utilizes the angle formed by the spreading profile of a liquid drop dripped from a tubule on the surface and the surface to judge the hydrophobic property, when the spreading area is larger, the surface is more hydrophilic, and when the contact angle is larger, the surface material is more hydrophobic (hydrophobic). At the present stage, the method is mainly applied to the laboratory range, and a field test system is not developed yet.
Disclosure of Invention
Aiming at the problems, the invention provides an outdoor detection method for the surface hydrophobicity of a high-voltage bushing umbrella skirt, which comprises the following steps:
s1, arranging a photographic chamber surrounding the surface of a high-voltage bushing umbrella skirt to be tested, and arranging a monochromatic light source inside the photographic chamber;
s2, horizontally fixing the surface of the umbrella skirt of the high-voltage bushing below the photographic chamber;
s3, enabling dyeing liquid drops to vertically and downwards drop to the surface of the umbrella skirt of the high-voltage sleeve through a plurality of droppers arranged above the photographic chamber;
s4, shooting a picture that liquid drops are still on the surface of the umbrella skirt of the high-voltage bushing on a vertical surface through a camera arranged in a camera chamber and transmitting the picture back to a worker;
and S5, determining the contact angle of the liquid drop and the surface of the umbrella skirt of the high-voltage bushing by the worker through the picture.
The detection method can reduce distortion caused by outdoor natural light to image interference by arranging the camera room and arranging the monochromatic light source under the conditions of outdoor low contrast and uneven illumination.
Preferably, the hue of the dye droplet is complementary to the hue of the monochromatic light source.
By means of the principle that the object is illuminated by the opposite-phase monochromatic light to form a visual black body, the working personnel can conveniently extract the state characteristics that the liquid is still on the umbrella skirt.
Preferably, the dyeing liquid drop is green, and the monochromatic light source is red; alternatively, the dye drop is red and the monochromatic light source is green.
Red and green are sensitive colors of human eyes, and the hue of the liquid drops is easy to adjust when the liquid drops are dyed.
Preferably, the cameras are a pair of binocular cameras, oppositely disposed on the sidewalls of the camera chamber.
Compared with a monocular camera, the binocular camera can provide more liquid drop state data, the contact property of liquid and the surface of the umbrella skirt is reflected in a three-dimensional mode, and the arrangement of the two-dimensional camera in opposite directions is beneficial to eliminating blind areas.
Another aspect of the present invention is to provide a non-transitory readable recording medium storing one or more programs containing instructions that, when executed, cause a processing circuit to perform the above-mentioned outdoor method for detecting hydrophobicity on the surface of a high voltage bushing shed.
In another aspect of the present invention, an outdoor detecting system for surface hydrophobicity of a high voltage bushing shed is provided, which includes a processing circuit and a memory electrically coupled thereto, where the memory is configured to store at least one program, the program includes a plurality of instructions, and the processing circuit runs the program to perform the outdoor detecting method for surface hydrophobicity of a high voltage bushing shed.
Drawings
FIG. 1 is a schematic diagram of an apparatus for implementing a method for outdoor detection of surface hydrophobicity of a shed of a high voltage bushing according to an embodiment of the present invention;
in the figure 1, a high-precision low-speed driving motor; 2. a transmission support fender bracket; 3. a dropper; 4. a monochromatic light source; 5. camera room, 6 camera, 7 stain drop.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any new work, are within the scope of the present invention.
As shown in fig. 1, the apparatus for implementing the method for detecting the hydrophobicity of the surface of the shed of the high voltage bushing outdoors comprises: a high-precision low-speed driving motor 1, a transmission support protection frame 2, a dropper 3, a monochromatic light source 4 (a red illuminating lamp in the example), a photographic chamber 5, a camera 6 (an electronic photographing device with a wireless transmission binocular camera in the example), and a dyeing liquid drop 7 (a green dyeing agent is used in the example); the device comprises a photographic chamber 5, a transmission support and protection frame 2, a high-voltage bushing umbrella skirt surface to be tested, a monochromatic light source 4, a high-precision low-speed driving motor 1, a speed reduction transmission mechanism and a high-voltage bushing umbrella skirt surface to be tested, wherein the photographic chamber 5 surrounds the umbrella skirt surface to form a closed body; the two cameras 6 are fixed to the inner side walls of the camera chamber 5 in opposed relation. The dropper 3 is arranged above the surface of the umbrella skirt in the photographic chamber 5, and the dropper opening is vertically fixed downwards.
The high-precision low-speed driving motor 1 is connected with a pump at the inlet of the four linked burettes 3 through a screw rod, dyeing liquid is driven to enter the burettes 3, the liquid can be dripped out from the lower ends of the burettes 3 in a single-drip mode, then the camera 6 is linked with the switch of the monochromatic lighting lamp 4, the burette 3 is automatically opened after liquid dripping action is completed, liquid drops 7 dripped on the surface of the umbrella skirt are photographed, non-transparent liquid drop pictures irradiated by monochromatic light are obtained, and the pictures are transmitted back to a mobile phone of a worker through the wireless transmission function of the camera. The working personnel obtain the spreading condition of the surface of the liquid drop through a wireless transmission picture, measure the contact angle between the liquid drop and the surface, simultaneously measure the four liquid drops to obtain multi-point test data of the local area of the umbrella skirt, and obtain the hydrophobic property evaluation of the surface material of the umbrella skirt by a multi-point averaging method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computers, usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The technical scheme of the invention is that the method steps are compiled into a program and then the program is stored in a hard disk or other non-transient storage media to form the non-transient readable recording medium; the storage medium is electrically connected with a computer processor, and the outdoor detection of the surface hydrophobicity of the umbrella skirt of the high-voltage bushing can be completed through data processing, so that the technical scheme of the outdoor detection system for the surface hydrophobicity of the umbrella skirt of the high-voltage bushing is formed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An outdoor detection method for the surface hydrophobicity of a high-voltage bushing shed is characterized by comprising the following steps:
s1, arranging a photographic chamber (5) surrounding the surface of a high-voltage bushing umbrella skirt to be tested, and arranging a monochromatic light source (4) in the photographic chamber;
s2, horizontally fixing the surface of the umbrella skirt of the high-voltage bushing below the photographic chamber (5);
s3, enabling dyeing liquid drops (7) to vertically and downwards drop to the surface of the umbrella skirt of the high-pressure sleeve through a plurality of droppers (3) arranged above the photographic chamber (5);
s4, shooting a picture that liquid drops on a vertical surface are still on the surface of the high-voltage bushing umbrella skirt by a camera (6) arranged in a camera chamber (5) and transmitting the picture back to a worker;
and S5, determining the contact angle of the liquid drop and the surface of the umbrella skirt of the high-voltage bushing by the worker through the picture.
2. The outdoor method for detecting the hydrophobicity of the surface of the umbrella skirt of the high-voltage bushing as claimed in claim 1, wherein the hue of the dye droplet (7) is complementary to the hue of the monochromatic light source (4).
3. The outdoor method for detecting the hydrophobicity of the surface of the umbrella skirt of the high voltage bushing as claimed in claim 2, wherein the dye drop (7) is green, and the monochromatic light source (4) is red.
4. The outdoor method for detecting the hydrophobicity of the surface of the umbrella skirt of the high voltage bushing as claimed in claim 2, wherein the dye drop (7) is red and the monochromatic light source (4) is green.
5. The outdoor testing method for the hydrophobicity of the surface of the umbrella skirt of the high voltage bushing of any one of claims 1 to 4, wherein the cameras (6) are a pair of binocular cameras, and are oppositely arranged on the side wall of the camera chamber.
6. A non-transitory readable recording medium storing one or more programs comprising instructions which, when executed, cause a processing circuit to perform a method for outdoor testing of the surface hydrophobicity of a high voltage bushing shed as recited in claim 5.
7. An outdoor testing system for hydrophobicity on the surface of a high voltage bushing shed, comprising a processing circuit and a memory electrically coupled thereto, wherein the memory is configured to store at least one program, the program comprising a plurality of instructions, and the processing circuit is capable of executing the program to perform a method for outdoor testing hydrophobicity on the surface of a high voltage bushing shed as claimed in claim 5.
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| CN202111507896.9A CN114324070A (en) | 2021-12-10 | 2021-12-10 | Outdoor detection method, recording medium and system for surface hydrophobicity of high-voltage bushing umbrella skirt |
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| CN202111507896.9A CN114324070A (en) | 2021-12-10 | 2021-12-10 | Outdoor detection method, recording medium and system for surface hydrophobicity of high-voltage bushing umbrella skirt |
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