CN112051209A - Automatic evaluation method for corrosion degree of power transmission and transformation steel member - Google Patents
Automatic evaluation method for corrosion degree of power transmission and transformation steel member Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 203
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 116
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 110
- 230000009466 transformation Effects 0.000 title claims abstract description 109
- 238000011156 evaluation Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 13
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 48
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
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- 241001163841 Albugo ipomoeae-panduratae Species 0.000 claims description 3
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- 238000005536 corrosion prevention Methods 0.000 abstract description 5
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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Abstract
The invention discloses an automatic evaluation method for corrosion degree of a power transmission and transformation steel member, which comprises the following steps: acquiring a corrosion photo of a steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment; the virtual grid division divides a corrosion photo of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids, and the area occupation ratio of the corroded grids is calculated by adopting a grid quantity statistical mode; and evaluating the corrosion grade degree of the steel member of the power transmission and transformation equipment according to the corroded grid area occupation ratio, and adopting differentiated anticorrosion maintenance and replacement strategies according to an evaluation result so as to solve the problems of corrosion prevention and replacement at any time. Therefore, potential safety hazards caused by corrosion are reduced, safety accidents and economic losses caused by corrosion are reduced, and the method has important significance for safe operation of a power grid.
Description
Technical Field
The invention relates to the technical field of power equipment state evaluation, and a base body relates to an automatic evaluation method for corrosion degree of a power transmission and transformation steel member.
Background
The corrosion of the steel members of the power transmission and transformation equipment is one of the important hidden troubles influencing the safe operation of the power grid. The corrosion defects often cause sudden accidents, such as oil leakage of transformer perforations, misoperation of protection caused by rust penetration of a control box body and water inflow, rust penetration and rust breakage of tower materials, rust breakage of tower feet, rust breakage of a grounding grid and the like, seriously affect the safe operation of the power grid, and even cause serious safety accidents such as tower collapse, wire breakage, power failure tripping and the like. Therefore, the corrosion degree of the steel member of the power transmission and transformation equipment is scientifically evaluated, an anticorrosion maintenance plan is made in time for processing before the steel member of the power transmission and transformation equipment fails due to corrosion, and effective anticorrosion maintenance measures are taken as key factors for ensuring safe and reliable operation of the power transmission and transformation equipment.
However, at present, the corrosion degree evaluation of the steel members of the power transmission and transformation equipment mainly depends on the visual observation and personal experience of field operators, common subjective descriptive languages such as 'rusting', 'rusting is serious', 'rusting is very serious', 'rusting is rotten' and the like which cannot be quantified are common, and even if a photograph is taken, no answer is given to the degree of corrosion to the end. The lack of a unified, normative, scientific, quantitative and operable corrosion degree evaluation method leads to randomness and blindness in subsequent corrosion prevention maintenance, and a corrosion prevention maintenance plan is difficult to determine when corrosion prevention should be performed and when replacement should be performed, so that the corrosion prevention effect is influenced, and even safety risks are generated.
Aiming at the problem, a field quantitative evaluation method for the corrosion degree of the steel member of the power transmission and transformation equipment, which can be actually operated and can directly output results, needs to be invented, and then differential anticorrosion maintenance and replacement strategies can be adopted according to the evaluation results so as to solve the problem of when anticorrosion is required to be carried out and when replacement is required to be carried out. Therefore, potential safety hazards caused by corrosion are reduced, safety accidents and economic losses caused by corrosion are reduced, and the method has important significance for safe operation of a power grid.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an automatic evaluation method for corrosion degree of power transmission and transformation steel members, which provides a reliable and simple evaluation method to improve the accuracy of corrosion evaluation of power transmission and transformation equipment steel members.
The invention is realized by the following technical scheme:
an automatic evaluation method for corrosion degree of power transmission and transformation steel members comprises the following steps:
acquiring a corrosion photo of a steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment;
the virtual grid division divides a corrosion photo of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids, and the area occupation ratio of the corroded grids is calculated by adopting a grid quantity statistical mode;
and evaluating the corrosion grade degree of the steel member of the power transmission and transformation equipment according to the corroded grid area occupation ratio.
Further, acquiring a corrosion photo of the steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment; the method comprises the following steps:
arranging a ruler with scales as a scale at the corrosion part of the steel member of the power transmission and transformation equipment;
shooting the corrosion part to form a corrosion picture of the steel member of the power transmission and transformation equipment with the ruler, and transmitting the corrosion picture to a database with automatic corrosion degree identification software;
and the database with the automatic corrosion degree identification software divides the corrosion photos of the electric transmission and transformation equipment component with the ruler into a plurality of virtual grids.
Further, dividing the corrosion photos of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids by the virtual grid division, and calculating the area occupation ratio of the corroded grids; the method comprises the following steps:
the etched grids are divided into uniform etched grids and/or local etched grids, and the area occupation ratio of the uniform etched grids is the proportion of the number of the uniform etched grids to the number of the total virtual grids;
the area of the local corrosion grid is calculated according to the length of a ruler in a corrosion picture of the steel member of the power transmission and transformation equipment.
Further, the local corrosion grid is a single rust spot.
Further, the corrosion grade degree of the steel member of the power transmission and transformation equipment is divided into 5 grades, and the corrosion degree comprises micro corrosion, light corrosion, medium corrosion, heavy corrosion and extremely heavy corrosion.
Further, when the corrosion grade of the steel member of the electric transmission and transformation equipment is grade 1, the corrosion degree is micro-corrosion degree;
the steel matrix and the surface zinc coating of the steel member of the power transmission and transformation equipment are intact, normal in color and luster, and smooth and flat in surface, or the color of the local zinc coating is changed into dark gray or gray black, or a zinc salt product of white rust appears locally, but red rust or brown rust does not appear yet.
Further, when the corrosion grade of the steel member of the electric transmission and transformation equipment is grade 2, the corrosion degree is a light corrosion degree;
slight rust occurs on the steel matrix of the steel member of the power transmission and transformation equipment, but the rust is not connected into sheets, and brown rust occurs on a zinc coating on the surface of the steel member;
when the corroded grid is a uniform corrosion grid, the corrosion area<3 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot of the corroded grid is<1cm2。
Further, when the corrosion grade of the steel member of the electric transmission and transformation equipment is grade 3, the corrosion degree is a medium corrosion degree;
obvious red rust appears on the surface of the steel member of the power transmission and transformation equipment, the red rust is primarily connected into a sheet, but large-area rust spots are mainly generated at the corner of the member;
when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 3 percent<10 percent; the corroded grid is locally corrodedWhen the grid is etched, it is 1cm2Area of single rust spot is less than or equal to<4cm2。
Further, when the corrosion grade of the steel member of the electric transmission and transformation equipment is 4 grades, the corrosion degree is the heavy corrosion degree;
the surfaces of the steel members of the power transmission and transformation equipment have large red rust and are connected into sheets, and the corners and the middle area generate the red rust;
when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 10 percent<33%; when the corroded grid is a local corrosion grid, the length of the grid is 4cm2Area of single rust spot is less than or equal to<9cm2。
Further, when the corrosion grade of the steel member of the electric transmission and transformation equipment is grade 5, the corrosion degree is an extremely heavy corrosion degree;
the surface of the steel member of the power transmission and transformation equipment has large-area red rust and is often connected with the red rust to form sheets or to have the phenomena of layering, shelling and perforation;
when the corroded grid is a uniform corrosion grid, the corrosion area is more than or equal to 33 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot is more than or equal to 9cm2。
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides an automatic evaluation method for corrosion degree of a power transmission and transformation steel member, which is mainly characterized in that a corrosion morphology feature map of the power transmission and transformation equipment steel member is utilized and divided by a virtual network, so that the corroded area ratio of the power transmission and transformation equipment steel member is accurately calculated, and the corroded area ratio of the power transmission and transformation equipment steel member is matched with the corrosion grade division of the power transmission and transformation equipment steel member, so that the accurate corrosion degree of the power transmission and transformation equipment steel member is obtained, and the accuracy and the efficiency of corrosion evaluation of the power transmission and transformation equipment steel member are improved.
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The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Examples
As shown in fig. 1, an automatic evaluation method for corrosion degree of electric transmission and transformation steel members comprises the following steps: acquiring a corrosion photo of the steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment; dividing a corrosion photo of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids by virtual grid division, and calculating the area occupation ratio of the corroded grids by adopting a grid quantity statistical mode; and evaluating the corrosion grade degree of the steel member of the power transmission and transformation equipment according to the area ratio of the corroded grid.
The main principle of the scheme is that a corrosion morphology feature map of the power transmission and transformation equipment steel member is utilized, the corrosion morphology feature map is divided into virtual networks, so that the corroded area ratio of the power transmission and transformation equipment steel member is obtained through accurate calculation, the corroded area ratio of the power transmission and transformation equipment steel member is matched with the corrosion grade division of the power transmission and transformation equipment steel member, the accurate corrosion degree of the power transmission and transformation equipment steel member is obtained, and the accuracy and the efficiency of corrosion evaluation of the power transmission and transformation equipment steel member are improved.
Further, acquiring a corrosion photo of the steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment; the method comprises the following steps: arranging a ruler with scales as a scale at the corrosion part of the steel member of the power transmission and transformation equipment; shooting the corrosion part to form a corrosion picture of the steel member of the power transmission and transformation equipment with the ruler, and transmitting the corrosion picture to a database with automatic corrosion degree identification software; and the database with the automatic corrosion degree identification software divides the corrosion photos of the electric transmission and transformation equipment steel members with the scales into a plurality of virtual grids.
Further, dividing the corrosion picture of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids by virtual grid division, and calculating the area ratio of the corroded grids; the method comprises the following steps: the etched grids are divided into uniform etched grids and/or local etched grids, and the area proportion of the uniform etched grids is the proportion of the number of the uniform etched grids to the number of the total virtual grids; the area of the local corrosion grid is calculated by the length of a ruler in a corrosion photo of the steel member of the power transmission and transformation equipment.
Further, the local corrosion grid is a single rust spot.
Further, the corrosion grade degree of the steel member of the power transmission and transformation equipment is divided into 5 grades, and the corrosion degree comprises micro corrosion, light corrosion, medium corrosion, heavy corrosion and extremely heavy corrosion.
Further, when the corrosion grade of the steel member of the power transmission and transformation equipment is grade 1, the corrosion degree is micro-corrosion degree; the steel matrix and the surface zinc coating of the steel member of the power transmission and transformation equipment are intact, normal in color and luster, and smooth and flat in surface, or the color of the local zinc coating is changed into dark gray or gray black, or a zinc salt product of white rust appears locally, but red rust or brown rust does not appear yet.
Further, when the corrosion grade of the steel member of the power transmission and transformation equipment is grade 2, the corrosion degree is light corrosion degree; slight rust occurs on the steel matrix of the steel member of the power transmission and transformation equipment, but the rust is not connected into sheets, and brown rust occurs on the zinc coating on the surface of the steel member; when the corroded grid is a uniform corrosion grid, the corrosion area<3 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot of the corroded grid is<1cm2。
Further, when the corrosion grade of the steel member of the power transmission and transformation equipment is grade 3, the corrosion degree is the medium corrosion degree; obvious red rust appears on the surface of the steel member of the power transmission and transformation equipment, the red rust is primarily connected into a sheet, but large-area rust spots are mainly generated at the corner of the member; when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 3 percent<10 percent; when the corroded grid is a local corrosion grid, the thickness of the grid is 1cm2Area of single rust spot is less than or equal to<4cm2。
Further, when the corrosion grade of the steel member of the power transmission and transformation equipment is 4 grades, the corrosion degree is the heavy corrosion degree; the surfaces of the steel members of the power transmission and transformation equipment have larger red rust and are connected into sheets, and the corners and the middle area generate the red rust; when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 10 percent<33%; when the corroded grid is a local corrosion grid, the length of the grid is 4cm2Area of single rust spot is less than or equal to<9cm2。
Further, when the corrosion grade of the steel member of the power transmission and transformation equipment is 5 grades, the corrosion degree is the extremely heavy corrosion degree; large-area red rust appears on the surface of the steel member of the power transmission and transformation equipment, and the phenomena of flaking, layering, shelling and perforation are often caused along with the red rust connection; when the corroded grid is a uniform corrosion grid, the corrosion area is more than or equal to 33 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot is more than or equal to 9cm2。
The working process of the scheme is as follows: on-site operation and maintenance personnel take pictures of corroded parts of steel members of the power transmission and transformation equipment through various shooting carriers such as a mobile phone, a camera, a digital telescope, an unmanned aerial vehicle, an electric power safety helmet, high-definition video monitoring equipment and the like, and a ruler with scales is arranged in the pictures and used as a scale, so that the corroded grids in the comparison piece can be counted and calculated more quickly.
Transmitting the corrosion photos shot by various carriers to a database with corrosion degree automatic identification software through various data transmission means such as a mobile phone local machine, an SD card, a USB (universal serial bus) line, Bluetooth, 4G, 5G, WIFI and the like; the database with the automatic corrosion degree identification software divides the uploaded photos into a plurality of virtual grids, and is set as follows: the grayish or grayish white grid is identified as an unetched grid and the brown or reddish brown grid is identified as an eroded grid.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The automatic evaluation method for the corrosion degree of the power transmission and transformation steel member is characterized by comprising the following steps of:
acquiring a corrosion photo of a steel member of the power transmission and transformation equipment, and performing virtual grid division on the corrosion photo of the steel member of the power transmission and transformation equipment;
the virtual grid division divides a corrosion photo of the steel member of the power transmission and transformation equipment into a plurality of non-corroded grids and a plurality of corroded grids, and the area occupation ratio of the corroded grids is calculated by adopting a grid quantity statistical mode;
and obtaining an accurate corrosion evaluation result according to the matching of the area occupation ratio of the corroded grid and the corrosion grade degree of the steel member of the power transmission and transformation equipment.
2. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 1, characterized by obtaining a corrosion photo of the electric transmission and transformation equipment steel member and performing virtual meshing on the corrosion photo of the electric transmission and transformation equipment steel member; the method comprises the following steps:
arranging a ruler with scales as a scale at the corrosion part of the steel member of the power transmission and transformation equipment;
shooting the corrosion part to form a corrosion picture of the steel member of the power transmission and transformation equipment with the ruler, and transmitting the corrosion picture to a database with automatic corrosion degree identification software;
the database with the automatic corrosion degree identification software divides the corrosion photos of the electric transmission and transformation equipment steel member with the ruler into a plurality of virtual grids;
the database with the automatic corrosion degree identification software is also configured with the corrosion grade and the corrosion degree of the steel member of the power transmission and transformation equipment.
3. The method for automatically evaluating the corrosion degree of the electric transmission and transformation steel member according to claim 2, wherein the virtual grid division divides a corrosion photo of the electric transmission and transformation equipment steel member into a plurality of non-corroded grids and a plurality of corroded grids, and calculates the area ratio of the corroded grids; the method comprises the following steps:
the etched grids are divided into uniform etched grids and local etched grids, and the area proportion of the uniform etched grids is the proportion of the number of the uniform etched grids to the number of the total virtual grids;
the area of the local corrosion grid is calculated according to the length of a ruler in a corrosion picture of the steel member of the power transmission and transformation equipment.
4. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 3, wherein the local corrosion grid is a single rusty spot.
5. The method for automatically evaluating the corrosion degree of the electric transmission and transformation steel member according to claim 4, wherein the corrosion grade degree of the electric transmission and transformation equipment steel member is classified into 5 grades, and the corrosion degree comprises micro corrosion, light corrosion, medium corrosion, heavy corrosion and extremely heavy corrosion.
6. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 5, wherein when the corrosion grade of the electric transmission and transformation equipment steel member is grade 1, the corrosion degree is a micro-corrosion degree;
the steel matrix and the surface zinc coating of the steel member of the power transmission and transformation equipment are intact, normal in color and luster, and smooth and flat in surface, or the color of the local zinc coating is changed into dark gray or gray black, or a zinc salt product of white rust appears locally, but red rust or brown rust does not appear yet.
7. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 5, wherein when the corrosion grade of the electric transmission and transformation equipment steel member is grade 2, the corrosion degree is a light corrosion degree;
slight rust occurs on the steel matrix of the steel member of the power transmission and transformation equipment, but the rust is not connected into sheets, and brown rust occurs on a zinc coating on the surface of the steel member;
when the corroded grid is a uniform corrosion grid, the corrosion area<3 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot of the corroded grid is<1cm2。
8. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 5, wherein when the corrosion grade of the electric transmission and transformation equipment steel member is grade 3, the corrosion degree is a medium corrosion degree;
obvious red rust appears on the surface of the steel member of the power transmission and transformation equipment, the red rust is primarily connected into a sheet, but large-area rust spots are mainly generated at the corner of the member;
when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 3 percent<10 percent; when the corroded grid is a local corrosion grid, the thickness of the grid is 1cm2Less than or equal to single rusty spotProduct of large quantities<4cm2。
9. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 5, wherein when the corrosion grade of the electric transmission and transformation equipment steel member is 4 grade, the corrosion degree is a heavy corrosion degree;
the surfaces of the steel members of the power transmission and transformation equipment have large red rust and are connected into sheets, and the corners and the middle area generate the red rust;
when the corroded grid is a uniform corrosion grid, the corrosion area is less than or equal to 10 percent<33%; when the corroded grid is a local corrosion grid, the length of the grid is 4cm2Area of single rust spot is less than or equal to<9cm2。
10. The automatic evaluation method for the corrosion degree of the electric transmission and transformation steel member according to claim 5, wherein when the corrosion grade of the electric transmission and transformation equipment steel member is 5 grade, the corrosion degree is an extremely heavy corrosion degree;
the surface of the steel member of the power transmission and transformation equipment has large-area red rust and is often connected with the red rust to form sheets or to have the phenomena of layering, shelling and perforation;
when the corroded grid is a uniform corrosion grid, the corrosion area is more than or equal to 33 percent; when the corroded grid is a local corrosion grid, the area of a single rusty spot is more than or equal to 9cm2。
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