Composite insulator shed aging prediction method and system, electronic equipment and storage medium

Abstract

The application discloses a composite insulator umbrella skirt aging prediction method, comprising the following steps: A, collecting the component content data of the high-voltage end surface of the composite insulator umbrella skirt; B, calculating the carbon-oxygen ratio through the carbon element content and oxygen element content data in the component content data; C, generating the aging threshold of the carbon-oxygen ratio through the corresponding relationship between the data of the carbon-oxygen ratio and the surface micro-morphology of the composite insulator; D, judging the aging degree of the composite insulator umbrella skirt according to the aging threshold. The application further discloses a composite insulator umbrella skirt aging prediction system, an electronic device and a storage medium. The composite insulator umbrella skirt aging prediction method can detect and analyze the chemical element component content on the surface of the high-voltage end of the umbrella skirt, and more accurately predict and judge the aging degree of the umbrella skirt by means of the carbon-oxygen ratio index.

Description

Technical Field

[0001] This invention relates to the field of power equipment testing technology, and in particular to a method, system, electronic device, and storage medium for predicting the aging of composite insulator skirts. Background Technology

[0002] The basic function of insulators is to support conductors and prevent current from returning to ground. Their presence provides a solid technical guarantee for the stable operation of transmission lines. High-temperature vulcanized silicone rubber possesses excellent hydrophobicity and hydrophobic migration properties. Composite insulators using silicone rubber as their shed sheath have significant advantages in anti-pollution flashover performance, electromechanical performance, and operation and maintenance, and are widely used as external insulation for overhead power lines. However, with increasing service life, silicone rubber composite insulators undergo a series of aging phenomena under the influence of ultraviolet radiation, corona discharge, pollution, and the natural environment, such as surface cracking, pulverization, decreased anti-pollution flashover capability, and reduced hydrophobicity, seriously threatening the safety of transmission lines. One common problem is that the aging of the shed material reduces anti-pollution performance and electrical insulation performance, leading to various accidents. Therefore, assessing the aging degree of insulators and predicting their operating condition is crucial for the safe operation of transmission lines.

[0003] Existing methods for aging detection of silicone rubber composite insulators include visual inspection, hydrophobicity testing, ultrasonic testing, infrared thermal imaging, and ultraviolet imaging. However, current aging assessment methods have limitations in practical production applications and require further improvement. Regarding safety early warning, current methods primarily rely on the results of insulator aging (such as crack appearance, decreased hydrophobicity, material pulverization, and corona discharge) as criteria for determining the degree of aging. There is a lack of effective methods for early aging prediction, thus failing to guide maintenance and replacement work before insulator failures occur.

[0004] Existing technologies rely on changes in various elements within the shed to determine the aging degree of the insulator skirt. For example, Chinese patent application CN109521037A discloses a quantitative detection method for the aging depth of silicone rubber based on cross-sectional elemental analysis. This method is primarily used to quantitatively detect the aging depth of silicone rubber and thus measure its aging degree. This detection method can quantitatively detect the aging depth of aged silicone rubber sheets or operating composite insulator skirt samples, providing a powerful method for quantitatively assessing the aging state of silicone rubber and comparing the performance of different samples.

[0005] Therefore, there is an urgent need for a method to detect and analyze chemical elements on the surface of the umbrella skirt, so as to more accurately predict and judge the aging degree of the umbrella skirt by using the ratio index of elements, and create better conditions for fault prediction and maintenance.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to provide a method and system for predicting the aging of composite insulator skirts. The method involves detecting and analyzing the chemical element content on the surface of the high-voltage end of the skirt, and using the carbon-oxygen ratio as an indicator to more accurately predict and judge the degree of aging of the skirt.

[0008] To achieve the above objectives, according to a first aspect of the present invention, the present invention provides a method for predicting the aging of composite insulator skirts, comprising the following steps: A. collecting component content data on the high-voltage end surface of the composite insulator skirts; B. calculating the carbon-oxygen ratio using the carbon and oxygen content data in the component content data; C. generating an aging threshold for the carbon-oxygen ratio based on the correspondence between the carbon-oxygen ratio data and the surface microstructure of the composite insulator; D. determining the degree of aging of the composite insulator skirts based on the aging threshold.

[0009] Furthermore, in the above technical solution, the component content data may include carbon content data, silicon content data, oxygen content data, and aluminum content data.

[0010] Furthermore, in the above technical solution, the aging degree of the composite insulator skirt is further verified by comparing and analyzing the carbon content data, silicon content data, oxygen content data, and aluminum content data with preset values.

[0011] Furthermore, in the above technical solution, step C can identify images of surface micromorphology through convolutional neural networks and establish a one-to-one correspondence with the calculated carbon-oxygen ratio data, and generate the aging threshold of carbon-oxygen ratio through model training.

[0012] Furthermore, in the above technical solution, the aging threshold for the carbon-oxygen ratio may include a first threshold and a second threshold; when the actual carbon-oxygen ratio is greater than the first threshold, the umbrella skirt is determined to be unaged; when the actual carbon-oxygen ratio is less than the second threshold, the umbrella skirt is determined to be severely aged; when the actual carbon-oxygen ratio is between the first and second thresholds, the umbrella skirt is determined to be slightly aged. The first threshold may be 1.30; the second threshold may be 1.00.

[0013] Furthermore, in the above technical solution, by comparing and analyzing the carbon content data, silicon content data, oxygen content data, and aluminum content data with preset values, the aging degree of the composite insulator skirt can be further verified as follows: when all of the following conditions are met, the skirt is verified to be aged; when none of the following conditions are met, the skirt is verified to be unaged. The specific conditions are: carbon content less than 41%, silicon content less than 25%, aluminum content less than 2%, and oxygen content greater than 32%.

[0014] Furthermore, in the above technical solution, the component content data of the high-voltage end surface of the umbrella skirt in step A can be analyzed and collected by XPS detection method.

[0015] According to a second aspect of the present invention, the present invention provides a composite insulator skirt aging prediction system, comprising: a data acquisition module for acquiring component content data of the high-voltage end surface of the composite insulator skirt; an analysis and processing module for calculating the carbon-oxygen ratio based on the carbon and oxygen content data in the component content data; a threshold generation module for generating an aging threshold for the carbon-oxygen ratio based on the correspondence between the carbon-oxygen ratio data and the surface micromorphology of the composite insulator; and an aging judgment module for judging the degree of aging of the composite insulator skirt based on the aging threshold.

[0016] Furthermore, in the above technical solution, the analysis and processing module can also be used to compare and analyze the carbon content data, silicon content data, oxygen content data, and aluminum content data of the high-voltage end surface of the composite insulator skirt with preset values ​​to further verify the aging degree of the skirt.

[0017] According to a third aspect of the present invention, an electronic device is provided, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the aforementioned composite insulator skirt aging prediction method.

[0018] According to a fourth aspect of the present invention, the present invention provides a non-transitory computer-readable storage medium storing computer-executable instructions for causing a computer to perform the composite insulator skirt aging prediction method as described above.

[0019] Compared with the prior art, the present invention has one or more of the following beneficial effects:

[0020] 1) Through research and analysis, it was determined that the aging degree of the umbrella skirt surface is much higher than that of the interior. Therefore, collecting data on the chemical composition content of the high-voltage end surface of the umbrella skirt to predict the aging degree of the umbrella skirt will be more accurate and allow for more timely replacement and maintenance.

[0021] 2) By detecting the chemical element composition content of the high-voltage end surface of the composite insulator skirt, the C / O ratio of the skirt surface is calculated. Through analysis of the aging mechanism and verification by a large amount of experimental data, the C / O ratio is more strongly correlated with the aging degree of the skirt. If the change in the content of a single element is used to judge the aging degree, the changes in the content of elements such as carbon, oxygen, and silicon need to be considered separately. However, the changes in the content of these components do not have a very accurate pattern, which can easily lead to distortion in the aging degree judgment. Using the C / O ratio to judge the aging degree of the skirt can effectively improve the accuracy of the judgment results.

[0022] 3) By using a convolutional neural network to identify and train the scanning electron microscope images that characterize the microstructure of the umbrella skirt surface, and by establishing a one-to-one correspondence between the calculated C / O ratio data and the scanning electron microscope images, the aging threshold of the carbon-oxygen ratio can be generated by calculating the median value, which can effectively improve the efficiency and accuracy of aging judgment.

[0023] 4) By comparing and analyzing the detected carbon, silicon, oxygen, and aluminum content data with preset values, the aging degree of the composite insulator skirts can be further verified, increasing the reliability of the judgment results.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, and to make the above and other objects, technical features and advantages of the present invention easier to understand, one or more preferred embodiments are listed below and described in detail with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating the method for predicting the aging of composite insulator skirts according to the present invention.

[0026] Figure 2 This is a schematic diagram comparing the infrared spectra of the surface and interior of the same composite insulator skirt.

[0027] Figure 3 This is a scanning electron microscope image of the shed skirt of a composite insulator in its unaged state.

[0028] Figure 4 This is a scanning electron microscope image of the slightly aged shed of a composite insulator.

[0029] Figure 5 This is a scanning electron microscope image of the severely aged state of the composite insulator skirt.

[0030] Figure 6 This is a schematic diagram of the composite insulator skirt aging prediction system according to the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the electronic device for predicting the aging of composite insulator skirts according to the present invention. Detailed Implementation

[0032] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0033] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0034] In this document, for ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” “above,” “up,” etc., are used to describe the relationship of one element or feature to another element or feature in the accompanying drawings. It should be understood that spatial relative terms are intended to encompass different orientations of an object in use or operation, in addition to those depicted in the figures. For example, if an object in the figure is flipped, an element described as “below” or “under” another element or feature would be oriented “above” that element or feature. Thus, the exemplary term “below” can encompass both the downward and upward orientations. An object may also have other orientations (rotated 90 degrees or other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0035] In this document, the terms "first," "second," etc., are used to distinguish two different elements or parts, and are not used to define specific positions or relative relationships. In other words, in some embodiments, the terms "first," "second," etc., can also be used interchangeably.

[0036] The methods, systems, electronic devices, and storage media of the present invention are described in more detail below by way of specific embodiments. It should be understood that the embodiments are merely exemplary and the present invention is not limited thereto.

[0037] Example 1

[0038] like Figure 1 As shown, the composite insulator skirt aging prediction method of the present invention includes the following steps:

[0039] Step S101: Collect component content data on the surface of the high-voltage end of the composite insulator skirt. Existing technologies typically analyze changes in the chemical element composition inside the skirt to determine its aging degree. This invention, through infrared spectroscopy testing, reveals that the aging degree of the silicone rubber surface is significantly greater than that of the silicone rubber interior. Silicone rubber is a high-performance polymeric insulating material. It is an organic material, and its main component is polydimethylsiloxane, with the molecular structure shown in the figure below (where m >> n, m ≈ 5000~10000, n ≈ 10~20).

[0040]

[0041] In natural environments, insulators are exposed to ultraviolet (UV) radiation. The energy of ground-based UV radiation is 300-412 kJ / mol. The bond energy of the Si-C bond in the side chain of polydimethylsiloxane is 292 kJ / mol, while the bond energy of the Si-O bond in the main chain is 445 kJ / mol. This means that the UV energy is greater than the Si-C bond energy but less than the Si-O bond energy. Therefore, silicone rubber is highly susceptible to UV radiation, leading to the breakage of Si-C bonds and the shedding of side methyl groups, exposing the main chain Si-O bonds. Since side methyl groups are hydrophobic and the main chain Si-O bonds are hydrophilic, during the aging process caused by UV radiation, the Si-C bonds in silicone rubber break, the side methyl groups detach, and the hydrophobicity continuously decreases.

[0042] Under thermo-oxidative aging conditions, silicone rubber mainly undergoes the following side group oxidation and crosslinking reactions:

[0043]

[0044] Under humid and hot aging conditions, in addition to side group oxidation and cross-linking reactions, moisture in the air also reacts with the main chain of silicone rubber to produce silanol groups. These silanol groups further cross-link with the main chain. These reactions lead to hardening of silicone rubber and uneven internal structure, resulting in phenomena such as powdering, cracking, and surface cracking.

[0045]

[0046] Based on the mechanism of thermo-oxidative aging of silicone rubber, the silicone rubber on the surface of the insulator is in direct contact with the external environment. The influence of the external environment on the insulator material is from the outside to the inside, and from the surface to the core, resulting in different aging degrees on the inside and outside. To demonstrate that the aging degree on the surface of the shed is much higher than that inside, this invention performed reflectance infrared spectroscopy tests on the upper surface, the interior of the upper shed (by cutting the upper shed open and taking a sample at the center of the cross-section), the lower surface, and the interior of the lower shed (by cutting the lower shed open and taking a sample at the center of the cross-section) of a severely aged insulator string. The results are compared in [reference needed]. Figure 2 ( Figure 2The horizontal axis represents wavenumber, and the vertical axis represents signal strength. Infrared spectroscopy testing is performed at 1280-1255 cm⁻¹. -1 The location is a Si-C bond, 1130-1000 cm. -1 The location represents a Si-O bond. Observing the Si-CH3 signal intensity indicated by the arrow in the figure, it can be clearly seen that the Si-CH3 signal on the surface of the insulator skirt (upper and lower sheet surfaces) is significantly weakened, far lower than the signal intensity inside the upper and lower sheets. Therefore, it can be determined that the aging degree of the skirt surface is much higher than that of the interior. Collecting chemical composition content data of the skirt surface to predict the aging degree of the skirt will be more accurate and allow for more timely replacement and maintenance.

[0047] In addition, considering that when silicone rubber composite insulators are used in power lines, the high-voltage end of the silicone rubber composite insulator is subjected to a stronger electric field and corona effect, and electrical factors will affect the aging of silicone rubber, the high-voltage end is the weaker end compared to the low-voltage end. Therefore, this invention chooses to conduct the test at the high-voltage end.

[0048] Preferably, but not limitingly, this invention employs X-ray photoelectron spectroscopy (XPS) to detect the chemical elemental composition of the high-voltage end surface of the insulator skirt. XPS can accurately measure the inner-shell electron binding energy and chemical shift of atoms, thus providing information not only on molecular structure and atomic valence states for chemical research, but also on the elemental composition and content, chemical state, molecular structure, and chemical bonds of various compounds for electronic materials research. Specifically, this invention uses XPS to detect the composition of four elements—Al, C, O, and Si—on the surface of the high-voltage end of the insulator skirt, and acquires the percentage (molar ratio) of these four elements using a data acquisition module.

[0049] In step S102, the analysis and processing module calculates the carbon-oxygen ratio, or C / O ratio, from the carbon and oxygen content data collected in step S101. Studies show that the C / O ratio is more strongly correlated with the aging degree of the umbrella skirt. If changes in the content of a single element are used to judge the aging degree, it is necessary to consider changes in the content of at least carbon, oxygen, and silicon, etc., respectively. However, the changes in the content of these components do not follow a very precise pattern, leading to distorted judgments of the aging degree. Based on the aforementioned analysis of the aging mechanism, the C / O ratio is a more accurate indicator of the aging degree of the umbrella skirt.

[0050] Step S103: Based on the correspondence between the carbon-oxygen ratio data calculated in step S102 and the surface microstructure of the composite insulator, an aging threshold for the carbon-oxygen ratio is generated. Specifically, firstly, this invention classifies the microstructure of the composite insulator skirt surface into three categories using scanning electron microscopy (SEM) images, namely... Figure 3 The surface shown is smooth and flat - not aged; Figure 4 The surface shown has minor pores and cracks – slight aging; Figure 5 The results show obvious pulverization and cracking, indicating severe aging. Next, 100 sets of composite insulator skirts with different service lives were selected as training data. A convolutional neural network model was preferred for training. Scanning electron microscope images of the 100 sets of composite insulator skirt surfaces were used as model input, and the three classification results were used as model output for model training. Then, each image of each of the three categories of model output was matched one-to-one with the C / O ratio calculated in step S102, thus classifying the 100 C / O ratios into three categories. Finally, the median C / O ratio in each category was calculated, and the median C / O ratio for the slightly aged and severely aged categories was used as the aging threshold for the carbon-oxygen ratio.

[0051] Step S104: Determine the aging degree of the composite insulator skirt based on the aging thresholds generated in step S103. Specifically, the aging thresholds generated in step S103 include a first threshold (i.e., the median C / O ratio for slightly aged cases) and a second threshold (i.e., the median C / O ratio for severely aged cases). When the actual C / O ratio is greater than the first threshold, the skirt is determined to be unaged; when the actual C / O ratio is less than the second threshold, the skirt is determined to be severely aged; when the actual C / O ratio is between the first and second thresholds, the skirt is determined to be slightly aged. It should be noted that this embodiment uses the median value to generate the aging threshold, but the aging threshold can also be defined by the average value or a similar method. Preferably, but not limitingly, the first threshold obtained through the above calculation of 100 sets of training data is 1.30; the second threshold obtained is 1.00. When slight aging occurs, attention should be paid and the number of subsequent tests should be increased; when severe aging occurs, timely replacement and maintenance should be performed.

[0052] Example 2

[0053] Embodiment 2 of the present invention adds a further step (i.e., step S105) to Embodiment 1 to verify the degree of aging of the umbrella skirt:

[0054] Step S105 involves comparing and analyzing the carbon, silicon, oxygen, and aluminum content data with preset values ​​to further verify the aging degree of the composite insulator skirts. Extensive experimental data shows a correlation between the percentage changes in the composition of Al, C, O, and Si on the skirt surface and the degree of aging, as shown in Table 1.

[0055] Table 1

[0056]

[0057]

[0058] Specifically, Table 1 selects 22 samples with different service times. The table includes both the percentage content of Al, C, O, and Si on the surface of each sample's skirt and the C / O ratio for each sample. Extensive data shows that when the carbon content is less than 41%, the silicon content is less than 25%, the aluminum content is less than 2%, and the oxygen content is greater than 32%, the skirt under test can be further verified as aged based on the judgment in Example 1. When none of the above conditions are met, the skirt can be further verified as not aged based on the judgment in Example 1.

[0059] The data acquisition in Embodiments 1 and 2 of this invention can be carried out online or offline. In the online mode, the elemental composition of the umbrella skirt surface can be detected by a drone equipped with relevant detection equipment. The data is then transmitted wirelessly and analyzed to obtain the changes in the composition of the umbrella skirt surface and the C / O ratio in real time, thereby judging the aging degree of the umbrella skirt surface in real time.

[0060] Example 3

[0061] like Figure 6 As shown, the composite insulator skirt aging prediction system of the present invention includes: a data acquisition module 201, an analysis and processing module 202, a threshold generation module 203, and an aging judgment module 204. The data acquisition module 201 is used to acquire component content data of the high-voltage end surface of the composite insulator skirt; the analysis and processing module 202 is used to calculate the carbon-oxygen ratio using the carbon and oxygen content data in the component content data; the threshold generation module 203 is used to generate aging thresholds for the carbon-oxygen ratio (preferably 1.00 and 1.30 respectively) based on the correspondence between the carbon-oxygen ratio data and the surface microstructure of the composite insulator; and the aging judgment module 204 is used to judge the degree of aging of the composite insulator skirt based on the aging thresholds.

[0062] Furthermore, the analysis and processing module is also used to compare and analyze the carbon content, silicon content, oxygen content, and aluminum content data of the high-voltage end surface of the composite insulator skirt with preset values, and to further verify the aging degree of the skirt based on the comparison and analysis results. The preset values ​​are specifically: carbon content 41%, silicon content 25%, aluminum content 2%, and oxygen content 32%.

[0063] Example 4

[0064] This embodiment provides a non-transient (non-volatile) computer storage medium storing computer-executable instructions that can execute the composite insulator skirt aging prediction method in any of the above method embodiments and achieve the same technical effect.

[0065] Example 5

[0066] This embodiment provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, which, when executed by a computer, cause the computer to perform the composite insulator skirt aging prediction method described in the above aspects and achieve the same technical effect.

[0067] Example 6

[0068] Figure 7 This is a schematic diagram of the hardware structure of the composite insulator skirt aging prediction electronic device according to this embodiment. The device includes one or more processors 610 and a memory 620. Taking one processor 610 as an example, the device may also include an input device 630 and an output device 640.

[0069] The processor 610, memory 620, input device 630 and output device 640 can be connected by a bus or other means.

[0070] The memory 620, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules. The processor 610 executes various functional applications and data processing of the electronic device by running the non-transitory software programs, instructions, and modules stored in the memory 620, thereby implementing the processing method of the above-described method embodiments.

[0071] The memory 620 may include a program storage area and a data storage area, wherein the program storage area may store the operating system and applications required for at least one function; the data storage area may store data, etc. Furthermore, the memory 620 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 620 may optionally include memory remotely located relative to the processor 610, and these remote memories may be connected to the processing device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0072] Input device 630 can receive input digital or character information and generate signal input. Output device 640 may include display devices such as a display screen.

[0073] The one or more modules are stored in the memory 620. When executed by the one or more processors 610, the following steps are performed: collecting component content data of the high-voltage end surface of the composite insulator skirt; calculating the carbon-oxygen ratio using the carbon and oxygen content data in the component content data; generating an aging threshold for the carbon-oxygen ratio based on the correspondence between the carbon-oxygen ratio data and the surface micromorphology of the composite insulator; and determining the degree of aging of the composite insulator skirt based on the aging threshold.

[0074] The above-described product can execute the methods provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the methods. Technical details not described in detail in this embodiment can be found in the methods provided in other embodiments of the present invention.

[0075] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0076] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0077] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. Any simple modifications, equivalent changes, and alterations made to the foregoing exemplary embodiments should fall within the scope of protection of the present invention.

Claims

1. A method of predicting the aging of a composite insulator shed, characterized by, The method comprises the following steps: A. Collecting component content data of the high-voltage end surface of the composite insulator shed; B. Calculating the carbon-oxygen ratio from the carbon element content and oxygen element content data in the component content data; C. Generating an aging threshold value of the carbon-oxygen ratio through the correspondence between the data of the carbon-oxygen ratio and the surface micro-morphology of the composite insulator; specifically, the surface micro-morphology of the composite insulator shed is divided into three categories through a scanning electron microscope image; composite insulator sheds of different service lives are selected as training data, the scanning electron microscope image of the surface of the composite insulator shed is taken as the model input, and the three classification results are taken as the model output for model training; each picture of each category of data output by the model is one-to-one corresponding to the calculated C / O ratio value; the median of the C / O ratio value in each category is calculated, and the median of the C / O ratio value of the slight aging and severe aging categories is taken as the aging threshold value of the carbon-oxygen ratio; D. Judging the aging degree of the composite insulator shed according to the aging threshold value.

2. The composite insulator shed aging prediction method of claim 1, wherein The component content data includes carbon element content data, silicon element content data, oxygen element content data, and aluminum element content data.

3. The composite insulator shed aging prediction method of claim 2, wherein The aging degree of the composite insulator shed is further verified through comparison analysis of the carbon element content data, silicon element content data, oxygen element content data, and aluminum element content data with preset values.

4. The composite insulator shed aging prediction method of claim 1, wherein Step C identifies the picture of the surface micro-morphology through a convolutional neural network, and forms a one-to-one correspondence with the calculated carbon-oxygen ratio data to generate the aging threshold value of the carbon-oxygen ratio through model training.

5. The composite insulator shed aging prediction method of claim 1, wherein The aging threshold value of the carbon-oxygen ratio includes a first threshold value and a second threshold value; when the actual data of the carbon-oxygen ratio is greater than the first threshold value, it is judged that the shed has not aged; When the actual data of the carbon-oxygen ratio is less than the second threshold value, it is judged that the shed has severely aged; When the actual data of the carbon-oxygen ratio is between the first threshold value and the second threshold value, it is judged that the shed has slightly aged.

6. The composite insulator shed aging prediction method of claim 5, wherein The first threshold value is 1.30, and the second threshold value is 1.

00.

7. The composite insulator shed aging prediction method of claim 3, wherein The further verification of the aging degree of the composite insulator shed through comparison analysis of the carbon element content data, silicon element content data, oxygen element content data, and aluminum element content data with preset values is specifically as follows: When the following conditions are all met, it is verified that the shed has aged; When the following conditions are not all met, it is verified that the shed has not aged; The conditions are specifically that the carbon element content is less than 41%, the silicon element content is less than 25%, the aluminum element content is less than 2%, and the oxygen element content is greater than 32%.

8. The composite insulator shed aging prediction method of claim 1, wherein The component content data of the shed high-voltage end surface in step A is analyzed and collected by an XPS detection method.

9. A composite insulator shed aging prediction system, characterized by, It comprises: A data acquisition module for acquiring component content data of the high-voltage end surface of the composite insulator shed; An analysis and processing module for calculating the carbon-oxygen ratio from the carbon element content and oxygen element content data in the component content data; The threshold generation module is configured to generate an aging threshold of the C / O ratio by the correspondence between the data of the C / O ratio and the surface micro-morphology of the composite insulator. Specifically, the micro-morphology of the umbrella skirt surface of the composite insulator is divided into three categories by a scanning electron microscope image. The umbrella skirts of the composite insulators with different service lives are selected as training data. The scanning electron microscope image of the umbrella skirt surface of the composite insulator is taken as model input, and the three classification results are taken as model output for model training. Each picture of each category of data output by the model is one-to-one corresponding to the calculated C / O ratio. The median of the C / O ratio in each category is calculated, and the median of the C / O ratio of the two categories of slight aging and severe aging is taken as the aging threshold of the C / O ratio. The aging judgment module is configured to judge the aging degree of the umbrella skirt of the composite insulator according to the aging threshold.

10. The composite insulator shed aging prediction system of claim 9, wherein, The analysis processing module is further configured to compare and analyze the carbon element content data, the silicon element content data, the oxygen element content data and the aluminum element content data of the high-voltage end surface of the umbrella skirt of the composite insulator with preset values, and further verify the aging degree of the umbrella skirt.

11. An electronic device, comprising: Comprise: At least one processor; And The memory is in communication connection with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the composite insulator umbrella skirt aging prediction method in any one of claims 1-8.

12. A non-transitory computer-readable storage medium, comprising: The non-transitory computer readable storage medium stores computer executable instructions for enabling the computer to execute the composite insulator umbrella skirt aging prediction method in any one of claims 1-8.

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