A method and device for detecting the aging state of a composite insulator

Abstract

The application discloses a kind of composite insulator aging state detection method and equipment, the method comprises: obtaining composite insulator sample set;Wherein, composite insulator sample set includes multiple composite insulator data, each composite insulator data includes first surface color difference information, first surface hardness information and first aging information;With first aging information as dependent variable, first surface color difference information and first surface hardness information as independent variable, composite insulator sample set is carried out multiple linear fitting, obtains composite insulator characteristic information;Obtain the second surface color difference information and second surface hardness information of composite insulator to be detected;Second aging information of composite insulator to be detected is determined based on second surface color difference information, second surface hardness information and composite insulator characteristic information.The method is used, after obtaining composite insulator characteristic information, the color difference data and hardness data of insulator are collected, the evaluation of aging state is completed, and the operation process of detection is greatly simplified.

Description

Technical Field

[0001] This invention relates to the field of power grid safety technology, and in particular to a method and device for detecting the aging state of composite insulators. Background Technology

[0002] In overhead transmission lines, insulators are crucial equipment, serving two main functions: first, suspending and securing the conductors to the towers, providing connection and support between the overhead conductors and the transmission towers; second, providing electrical insulation between the high-potential overhead conductors and the ground-potential transmission towers, preventing ground discharge and short-circuit accidents. Due to the influence of the surrounding environment, such as ultraviolet radiation, temperature, humidity, pollution levels, and corona discharge, composite insulators undergo varying degrees of aging. Aging of composite insulators is mainly manifested in the brittleness, powdering, and breakage of the shed panels, and even core rod fracture. These phenomena severely affect the normal operation of composite insulators, thereby impacting the safe and reliable operation of the power grid. Therefore, for maintenance departments, it is necessary to detect and assess the aging status of composite insulators, revealing their degree of aging and providing a basis for replacement decisions. Summary of the Invention

[0003] This invention provides a method and device for detecting the aging state of composite insulators, which is used to collect color difference data and hardness data of insulators to complete the assessment of aging state.

[0004] In a first aspect, embodiments of the present invention provide a method for detecting the aging state of composite insulators, the method comprising:

[0005] Obtain a composite insulator sample set; wherein, the composite insulator sample set includes multiple composite insulator data, and each composite insulator data includes first surface color difference information, first surface hardness information and first aging information;

[0006] Using the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables, a multivariate linear fit is performed on the composite insulator sample set to obtain the composite insulator feature information.

[0007] Obtain the color difference information and hardness information of the second surface of the composite insulator to be tested;

[0008] The second aging information of the composite insulator to be tested is determined based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information.

[0009] Secondly, embodiments of the present invention also provide a device for detecting the aging state of composite insulators, the device comprising: a color difference test probe, a hardness test probe, and a controller;

[0010] The color difference test probe and the hardness test probe are respectively connected to the controller;

[0011] The color difference test probe is used to collect surface color difference information of the composite insulator; the hardness test probe is used to collect surface hardness information of the composite insulator.

[0012] The controller is used to determine the aging information of the composite insulator based on the surface color difference information and the surface hardness information.

[0013] This invention discloses a method and apparatus for detecting the aging state of composite insulators. The method includes: acquiring a composite insulator sample set; wherein the composite insulator sample set includes multiple composite insulator data, each composite insulator data including first surface color difference information, first surface hardness information, and first aging information; performing multivariate linear fitting on the composite insulator sample set with the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables to obtain composite insulator characteristic information; acquiring second surface color difference information and second surface hardness information of the composite insulator to be tested; and determining the second aging information of the composite insulator to be tested based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information. Using this method, after obtaining the composite insulator characteristic information through multivariate linear fitting, the color difference data and hardness data of the insulator are collected to complete the aging state assessment, greatly simplifying the detection and assessment process. Furthermore, with the continuous expansion of the data volume, the accuracy of the aging state assessment is further improved, greatly simplifying the detection and assessment process. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0015] Figure 1 A flowchart illustrating a method for detecting the aging state of a composite insulator provided in an embodiment of this disclosure;

[0016] Figure 2 A schematic diagram of the structure of a composite insulator aging state detection device provided in an embodiment of this disclosure;

[0017] Figure 3 This is a schematic diagram of a module in the controller of a composite insulator aging state detection device provided in an embodiment of this disclosure. Detailed Implementation

[0018] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0019] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0020] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0021] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0022] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0023] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0024] It is understood that before using the technical solutions disclosed in the various embodiments of this disclosure, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this disclosure in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained.

[0025] For example, upon receiving a user's active request, a prompt message is sent to the user to explicitly inform them that the requested operation will require the acquisition and use of the user's personal information. This allows the user to independently choose whether to provide personal information to the software or hardware, such as the electronic device, application, server, or storage medium performing the operations of this disclosed technical solution, based on the prompt message.

[0026] As an optional but non-limiting implementation, in response to a user's active request, sending a prompt message to the user can be done via a pop-up window, where the prompt message can be presented in text format. Furthermore, the pop-up window can also include a selection control allowing the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0027] It is understood that the above notification and user authorization process are merely illustrative and do not constitute a limitation on the implementation of this disclosure. Other methods that comply with relevant laws and regulations may also be applied to the implementation of this disclosure.

[0028] It is understood that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions.

[0029] Example 1

[0030] Figure 1 This is a flowchart illustrating the detection of the aging state of composite insulators according to an embodiment of the present disclosure. This embodiment is applicable to situations where users are provided with the ability to detect the aging state of composite insulators. The method can be executed by a device for detecting the aging state of composite insulators. This device can be implemented in the form of software and / or hardware, or optionally, by an electronic device, such as a mobile terminal.

[0031] like Figure 1 As shown in the embodiments of this disclosure, a method for detecting the aging state of composite insulators may specifically include the following steps:

[0032] S110. Obtain a sample set of composite insulators.

[0033] The composite insulator sample set includes multiple composite insulator data sets. Each composite insulator data set includes first surface color difference information, first surface hardness information, and first aging information. The surface color difference information is in Lab color space, and the surface hardness information is Rockwell hardness.

[0034] In this embodiment, surface color difference information is used because composite insulator skirts often exhibit significant discoloration after aging. Therefore, quantitatively describing the degree of color change in the skirts can characterize the color difference of the skirt material. Surface color difference information can be expressed in the L*, a*, and b* components of the Lab color space. Surface hardness information is represented by Rockwell hardness values. Aging information refers to the service life of the composite insulator, which can be characterized in years.

[0035] Obtain a sample set containing pre-collected sample data of composite insulators. The sample set includes multiple composite insulator data entries. Each composite insulator data entry needs to include first surface color difference information L*, a*, b*, first surface hardness information HRC, and first aging information Ys.

[0036] S120. Using the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables, perform multivariate linear fitting on the composite insulator sample set to obtain the composite insulator characteristic information.

[0037] The characteristic information of composite insulators is represented by a coefficient matrix.

[0038] In this embodiment, using the principle of multiple linear regression, with the first aging information Ys as the dependent variable and the first surface color difference information L*, a*, b* and the first surface hardness information HRC as independent variables, the linear relationship of multiple composite insulator data in the composite insulator sample set is fitted:

[0039] Ys=[a0,a1,a2,a3,a4]*[1,L*,a*,b*,HRC] T ,

[0040] The coefficient matrix A = [a0, a1, a2, a3, a4] is obtained. The coefficient matrix A is the characteristic information of the composite insulator.

[0041] Optionally, the composite insulator feature information can be obtained by performing multiple linear fitting on the composite insulator sample set with the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables. This can be achieved by: clustering the composite insulator sample set according to the first surface color difference information and / or the first surface hardness information to obtain multiple composite insulator sample subsets; wherein the composite insulator data in the composite insulator sample subsets belong to the same class; and performing multiple linear fitting on the multiple composite insulator sample subsets with the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables to obtain multiple composite insulator feature information.

[0042] In this embodiment, the overall aging process of the composite insulator exhibits a non-linear relationship throughout its entire lifespan, but a linear relationship exists within a certain time period. For example, the aging process of the composite insulator is linear from the first year to the third year, and also linear from the third year to the fourth year. The composite insulator sample set is clustered, using the first surface color difference information and / or the first surface hardness information as cluster centers. Composite insulator data with a distance less than a set threshold from the center are clustered into one class, resulting in multiple composite insulator sample subsets. Each subset constitutes a class.

[0043] Specifically, using the first aging information Ys as the dependent variable, and the first surface color difference information L*, a*, b*, and the first surface hardness information HRC as independent variables, the above-mentioned multiple linear fitting was performed on multiple composite insulator sample subsets to determine their linear relationships:

[0044] Ys=[a0,a1,a2,a3,a4]*[1,L*,a*,b*,HRC] T ,

[0045] Multiple coefficient matrices are obtained, where each coefficient matrix represents a characteristic information of a composite insulator.

[0046] S130: Obtain the second surface color difference information and the second surface hardness information of the composite insulator to be tested.

[0047] In this embodiment, the composite insulator to be tested is tested to obtain the second surface color difference information and the second surface hardness information of the composite insulator to be tested.

[0048] S140. Determine the second aging information of the composite insulator to be tested based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information.

[0049] Specifically, based on the second surface color difference information and the second surface hardness information, the corresponding composite insulator sample subset is determined, the composite insulator characteristic information corresponding to the composite insulator sample subset is obtained, and the second aging information of the composite insulator to be tested is determined according to the second surface color difference information, the second surface hardness information and the composite insulator characteristic information.

[0050] Optionally, the method for determining the second aging information of the composite insulator to be tested based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information can be: determining the composite insulator sample subset corresponding to the second surface color difference information and the second surface hardness information; and determining the second aging information of the composite insulator to be tested based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information corresponding to the composite insulator sample subset.

[0051] Specifically, based on the second surface color difference information and the second surface hardness information, a corresponding subset of composite insulator samples is determined, and the characteristic information of the composite insulators corresponding to this subset of composite insulator samples is obtained. Then, based on the second surface color difference information, the second surface hardness information, and the characteristic information of the composite insulators, the second aging information of the composite insulators to be tested is determined.

[0052] Optionally, the second aging information of the composite insulator to be tested can be determined based on the second surface color difference information, the second surface hardness information, and the composite insulator feature information by: concatenating the second surface color difference information and the second surface hardness information into a multi-dimensional vector; and performing a dot product between the coefficient matrix corresponding to the composite insulator feature information and the multi-dimensional vector to obtain the second aging information.

[0053] Specifically, the second surface color difference information and the second surface hardness information are concatenated into a multi-dimensional vector. Based on the second surface color difference information and the second surface hardness information, the corresponding composite insulator sample subset is determined, and the composite insulator feature information corresponding to the composite insulator sample subset is obtained. The coefficient matrix corresponding to the composite insulator feature information and the multi-dimensional vector are multiplied by a dot to obtain the second aging information.

[0054] This invention discloses a method for detecting the aging state of composite insulators. The method includes: acquiring a composite insulator sample set; wherein the composite insulator sample set includes multiple composite insulator data, each composite insulator data including first surface color difference information, first surface hardness information, and first aging information; performing multivariate linear fitting on the composite insulator sample set with the first aging information as the dependent variable and the first surface color difference information and first surface hardness information as independent variables to obtain composite insulator characteristic information; acquiring second surface color difference information and second surface hardness information of the composite insulator to be tested; and determining the second aging information of the composite insulator to be tested based on the second surface color difference information, second surface hardness information, and composite insulator characteristic information. Using this method, after obtaining the composite insulator characteristic information through multivariate linear fitting, the color difference data and hardness data of the insulator are collected to complete the aging state assessment, greatly simplifying the detection and assessment process. Furthermore, with the continuous expansion of the data volume, the accuracy of the aging state assessment is further improved, greatly simplifying the detection and assessment process.

[0055] Example 2

[0056] Figure 2 A schematic diagram of a device for detecting the aging state of composite insulators is also provided as an embodiment of the present invention, as shown below. Figure 2 As shown, the device 1 includes: a color difference test probe 11, a hardness test probe 21, and a controller 31.

[0057] The color difference test probe 11 and the hardness test probe 21 are respectively connected to the controller 31; the color difference test probe 11 is used to collect the surface color difference information of the composite insulator; the hardness test probe 21 is used to collect the surface hardness information of the composite insulator; the controller 31 is used to determine the aging information of the composite insulator based on the surface color difference information and the surface hardness information.

[0058] Figure 3This is a schematic diagram of a module in the controller of a composite insulator aging state detection device provided in an embodiment of this disclosure. Figure 3 As shown, the controller 31 includes a display module 311, a data acquisition module 312, a data analysis module 313, and a data storage module 314. The display module 311 provides a human-machine interface for receiving user trigger operations. The data acquisition module 312 provides the communication protocol and hardware channel for accessing the color difference test probe 11 and the hardness test probe 21. The data analysis module 313 analyzes the surface color difference information and surface hardness information to obtain aging information. The data storage module 314 stores the surface color difference information, surface hardness information, and aging information.

[0059] like Figure 2 As shown, device 1 also includes a power supply 41 for supplying power to the device.

[0060] like Figure 3 As shown, the controller 31 also includes a power management module 315 for detecting the real-time status of the power supply.

[0061] like Figure 3 As shown, the controller 31 also includes a test management module 316, which is used to record the basic information of the composite insulator.

[0062] The basic information includes the specifications of the composite insulator, the test code, and the information of the test personnel.

[0063] In this technical solution, the equipment is portable and has a simple hardware structure, enabling on-site testing and evaluation, greatly simplifying the testing and evaluation process. The device is easy to operate; it only requires collecting color difference and hardness data from the insulators to complete the aging condition assessment. Simultaneously, the equipment supports data storage and re-analysis, allowing for upgrades and optimizations of the aging condition assessment. As the amount of data continuously increases, the accuracy of the aging condition assessment can be further improved.

[0064] The above-described apparatus can execute the methods provided in all the foregoing embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the above methods. Technical details not described in detail in this embodiment can be found in the methods provided in all the foregoing embodiments of the present invention.

[0065] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for detecting the aging state of composite insulators, characterized in that, Obtain a composite insulator sample set; wherein, the composite insulator sample set includes multiple composite insulator data, and each composite insulator data includes first surface color difference information, first surface hardness information and first aging information; Using the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables, a multivariate linear fit is performed on the composite insulator sample set to obtain the composite insulator feature information. The composite insulator sample set is subjected to multiple linear fitting with the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables to obtain composite insulator feature information, including: Clustering the composite insulator sample set based on the first surface color difference information and / or the first surface hardness information to obtain multiple composite insulator sample subsets includes: clustering composite insulator data with a distance of less than a set threshold from the first surface color difference information and / or the first surface hardness information as cluster centers to obtain multiple composite insulator sample subsets; wherein the composite insulator data in the composite insulator sample subsets belong to the same class; Using the first aging information as the dependent variable and the first surface color difference information and the first surface hardness information as independent variables, multiple linear fitting is performed on the multiple composite insulator sample subsets to obtain multiple composite insulator feature information. Obtain the color difference information and hardness information of the second surface of the composite insulator to be tested; The second aging information of the composite insulator to be tested is determined based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information.

2. The method according to claim 1, characterized in that, The composite insulator's characteristic information is represented by a coefficient matrix; the second aging information of the composite insulator to be tested is determined based on the second surface color difference information, the second surface hardness information, and the composite insulator's characteristic information, including: The second surface color difference information and the second surface hardness information are concatenated into a multi-dimensional vector; The second aging information is obtained by multiplying the coefficient matrix corresponding to the feature information of the composite insulator with the multidimensional vector.

3. The method according to claim 1, characterized in that, The second aging information of the composite insulator to be tested is determined based on the second surface color difference information, the second surface hardness information, and the composite insulator characteristic information, including: Determine the composite insulator sample subset corresponding to the second surface color difference information and the second surface hardness information; The second aging information of the composite insulator to be tested is determined based on the second surface color difference information, the second surface hardness information, and the composite insulator feature information corresponding to the composite insulator sample subset.

4. The method according to claim 1, characterized in that, The surface color difference information is Lab color space information, and the surface hardness information is Rockwell hardness.

5. A testing device for detecting the aging state of composite insulators according to any one of claims 1-4, characterized in that, The device includes: a color difference test probe, a hardness test probe, and a controller; The color difference test probe and the hardness test probe are respectively connected to the controller; The color difference test probe is used to collect surface color difference information of the composite insulator; the hardness test probe is used to collect surface hardness information of the composite insulator. The controller is used to determine the aging information of the composite insulator based on the surface color difference information and the surface hardness information.

6. The device according to claim 5, characterized in that, The controller includes a display module, a data acquisition module, a data analysis module, and a data storage module; The display module provides a human-computer interaction interface for receiving user-triggered operations; The data acquisition module is used to provide the communication protocol and hardware channel for accessing the color difference test probe and the hardness test probe; The data analysis module is used to analyze the surface color difference information and the surface hardness information to obtain aging information; The data storage module is used to store the surface color difference information, the surface hardness information, and the aging information.

7. The device according to claim 5, characterized in that, The device also includes a power supply for supplying power to the device.

8. The device according to claim 7, characterized in that, The controller also includes a power management module for detecting the real-time status of the power supply.

9. The device according to claim 5, characterized in that, The controller also includes a test management module for recording basic information about the composite insulator.

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