A Visual Inspection Method and Equipment for Insulator Leakage Current

Abstract

The present invention discloses a method and device for visual inspection of leakage current of insulators, belonging to the technical field of transmission line monitoring, and is used to solve the technical problems that the hidden danger detection process of existing transmission line insulators is complex, the identification and analysis of hidden dangers of insulators are inaccurate, and the manual inspection cost is high and the inspection efficiency is low. The method includes: determining the spatial position information of several insulators in the transmission line; collecting the leakage current of the insulators according to the spatial position information of the several insulators to obtain a recording file; identifying the current discharge waveform according to the recording file to obtain the discharge type; controlling the monitoring pan-tilt camera to rotate and identify according to the discharge type to obtain an inspection image; and determining the damage conditions of the several insulators according to the inspection image and the recording file.

Description

Technical Field

[0001] This application relates to the field of transmission line monitoring, and in particular to a visual inspection method and device for insulator leakage current. Background Art

[0002] Insulators in transmission lines are exposed to outdoor operation for a long time. The harsh natural environment and the operation quality of the insulators themselves are factors affecting accidents. To ensure the stable and reliable operation of insulators, regular inspection and maintenance are required to keep the insulators operating stably and the transmission lines operating reliably.

[0003] The operation process of traditional off-line insulator pollution level measurement is complex, consuming a large amount of manpower and material resources, and the obtained test results have large errors. Regular maintenance based on historical operation data has poor timeliness and may cause a large amount of waste. Portable insulator detection instruments need to be carried to the site manually for inspection work, with low inspection efficiency, increasing the work pressure on power operation and maintenance personnel. The judgment results of on-line insulator detection instruments are relatively single, with many false alarms, requiring operation and maintenance personnel to conduct manual screening, increasing the work pressure on operation and maintenance personnel. Failure to maintain in a timely manner may lead to inadequate supervision, and in severe cases, flashover power outage liability accidents may occur. Summary of the Invention

[0004] The embodiments of this application provide a visual inspection method and device for insulator leakage current, which are used to solve the following technical problems: the hidden danger detection process of existing transmission line insulators is complex, the identification and analysis of insulator hidden dangers are inaccurate, and the manual inspection cost is high and the inspection efficiency is low.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] On the one hand, the embodiments of this application provide a visual inspection method and device for insulator leakage current, characterized in that the method includes: determining the spatial position information of several insulators in the transmission line; collecting the leakage current of the insulators according to the spatial position information of the several insulators to obtain a recording file; identifying the current discharge waveform according to the recording file to obtain the discharge type; controlling the monitoring pan-tilt camera to rotate and identify according to the discharge type to obtain an inspection image; and determining the damage conditions of the several insulators according to the inspection image and the recording file.

[0007] In the embodiment of the present application, the leakage current of the insulator is obtained through the insulator leakage sensor, and then combined with the visual monitoring and shooting device to realize the real-time visual monitoring of the insulator, and timely master the actual situation of the insulator. Then, short-range wireless communication is used to realize the communication between the leakage current detection device and the visual intelligent monitoring and shooting device, which not only saves the hardware cost, but also improves the edge data processing ability. For the insulators with early warnings, trigger the visual image and infrared thermal image inspections, and perform intelligent analysis on the inspection image information to identify potential defect hazards. Then, combined with the meteorological information, conduct comprehensive analysis and confirmation to reduce the false alarm rate of insulator detection, improve the accuracy of potential hazard identification, provide visual analysis and operation and maintenance judgment basis for the operation and maintenance personnel. This method greatly improves the operation and maintenance monitoring level of the insulator, improves the work efficiency of the operation and maintenance personnel, and reduces the cost of manual inspection.

[0008] In a feasible implementation manner, determining the spatial position information of several insulators in the transmission line specifically includes: taking pictures of several insulators through the monitoring and shooting pan-tilt camera to obtain several initial insulator images and the initial angles of the monitoring and shooting pan-tilt camera; identifying the spatial position information of the insulators in several initial insulator images to obtain the initial position coordinates of each insulator; calculating the difference between the initial position coordinates of each insulator and the image center position coordinates to obtain the horizontal coordinate difference and the vertical coordinate difference of each insulator; converting the horizontal coordinate difference and the vertical coordinate difference into angles to obtain the horizontal change angle and the vertical change angle; adjusting the initial angles of the monitoring and shooting pan-tilt camera according to the horizontal change angle and the vertical change angle to obtain the actual horizontal angle and the actual vertical angle; and recording the actual horizontal angle and the actual vertical angle corresponding to several insulators in the back-end server to obtain the spatial position information of several insulators.

[0009] In the embodiment of the present application, by obtaining the spatial positions of several insulators, the monitoring and shooting pan-tilt camera is rotated to the corresponding position in the first time to obtain the real-time situation of the insulator, realizing the rapid and accurate search for the insulators with potential safety hazards and reducing the probability of missing or misidentifying the insulators.

[0010] In a feasible implementation manner, perform target similarity segmentation on the initial insulator image to segment out the similar insulator images, and determine whether the similar insulator images contain complete insulator images; in the case of determining that the similar insulator images contain complete insulator images, establish a two-dimensional plane coordinate system for the initial insulator image; determine the center point coordinates of the similar insulator image according to the two-dimensional plane coordinate system, and obtain the initial position coordinates of the insulator according to the center point coordinates of the similar insulator image.

[0011] In a feasible implementation manner, when it is determined that the similar insulator image does not contain a complete insulator image, the similar insulator image is subjected to convolution operation to extract the abstract surface features of the similar insulator image; wherein, the abstract surface features are the shape features of the insulator; the abstract surface features are subjected to feature repetition transformation to obtain additional basic features; according to the additional basic features, the abstract surface features are complemented and increased to obtain complete abstract surface features; through the complete abstract surface features, the similar insulator image is blurred and expanded to obtain a complemented similar insulator image; the complemented similar insulator image and the insulator image are overlapped and fused to obtain a complemented insulator image; and according to the complemented insulator image, a complemented two-dimensional plane coordinate system is constructed; according to the complemented two-dimensional plane coordinate system, the center point coordinates of the complemented similar insulator image are determined, and according to the center point coordinates of the complemented similar insulator image, the initial position coordinates of the complemented insulator are obtained; wherein, the initial position coordinates of the insulator include the initial position coordinates of the complemented insulator.

[0012] In a feasible implementation manner, according to the spatial position information of the plurality of insulators, leakage current of the insulators is collected to obtain a recording file, which specifically includes: detecting leakage current of the plurality of insulators through an insulator leakage current sensor to obtain an induced current; wherein, the insulator leakage current sensor is installed at the top end of the insulator; converting the induced current into voltage differential, and restoring the voltage differential through a filter integration amplifier to obtain a leakage current value; if the leakage current value is greater than a first preset threshold, recording the leakage current through the insulator leakage current sensor to obtain a recording file corresponding to the leakage current; and sending the recording file to a monitoring PTZ camera; wherein, the recording file includes the discharge waveform width and the discharge waveform amplitude of the leakage current.

[0013] The leakage current in the embodiments of the present application is obtained by induction of a Rogowski coil. The Rogowski coil does not contain ferromagnetic materials and has no hysteresis effect, and has a good effect on measuring current and is more accurate in measurement.

[0014] In a feasible implementation manner, according to the recording file, current discharge waveform recognition is performed to obtain a discharge type, which specifically includes: after sending the recording file to a monitoring PTZ camera, detecting weather meteorology to obtain micro-meteorological data; performing current discharge waveform recognition on the recording file through a preset lightweight intelligent algorithm and the micro-meteorological data to obtain a corresponding discharge type; wherein, the discharge type includes at least any one of the following: insulator breakdown and short circuit, insulator high-resistance grounding, lightning overcurrent, and corona discharge.

[0015] In a feasible implementation manner, according to the discharge type, the monitoring and shooting pan-tilt camera is controlled to rotate and identify to obtain inspection images, specifically including: according to the discharge type, identifying the spatial position of the insulator corresponding to the discharge type; controlling the monitoring and shooting pan-tilt camera to rotate to the corresponding spatial position of the insulator, and performing visible light and infrared identification and photographing on the insulator to obtain the inspection images; wherein, the inspection images include visible light images and infrared images.

[0016] In the embodiment of the present application, through the visual built-in lightweight algorithm, the visible light image can identify potential hazards such as incomplete insulators and cracks, the infrared thermal imaging can identify the heating effect caused by discharge, and the micro-meteorological detection can retain the meteorological conditions where the leakage current occurs, providing multiple bases for comprehensively judging the operating condition of the insulator and improving the determination accuracy.

[0017] In a feasible implementation manner, according to the inspection images and the recording file, determining the damage conditions of several insulators, specifically including: through a preset intelligent analysis algorithm, analyzing the image content of the inspection images to obtain the surface damage characteristics and heating effect of the insulators; wherein, the surface damage characteristics of the insulators at least include any one of the following: incomplete insulators, insulator cracks, surface contamination of the insulators, and ice coating thickness of the insulators; combining the surface damage characteristics and heating effect of the insulators with the micro-meteorological data to obtain the insulator damage warning type; wherein, the micro-meteorological data is obtained by detecting the weather meteorology, and the insulator damage warning type at least includes any one of the following: insulator damage warning, contamination coverage warning, over-thick ice coating warning, and overheating warning of leakage current.

[0018] In a feasible implementation manner, after determining the damage conditions of several insulators according to the inspection images and the recording file, the method further includes: statistically analyzing the inspection images, the recording file, the insulator damage warning type, the leakage current value, and the micro-meteorological data to obtain comprehensive detection data; sending the comprehensive detection data to the back-end server in the control platform to realize the visual inspection of the several insulators by the operation and maintenance personnel.

[0019] On the other hand, the embodiment of the present application further provides a visual insulator leakage current inspection device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions that can be executed by the at least one processor, so that the at least one processor can execute a visual insulator leakage current inspection method according to any one of the above embodiments.

[0020] The embodiments of the present application provide a method and device for visual inspection of insulator leakage current. By implementing communication between the leakage current detection device and the visual intelligent monitoring and photographing device through short-distance wireless communication, not only the hardware cost is saved, but also the edge-end data processing ability is improved. For insulators with early warnings triggered, visual images and infrared thermal images are inspected, and the inspected image information is intelligently analyzed to identify potential defects. Combining with meteorological information, comprehensive analysis and confirmation are carried out, reducing the false alarm rate of insulator detection, improving the accuracy of potential hazard identification, providing visual analysis and operation and maintenance judgment basis for operation and maintenance personnel. This method greatly improves the operation and maintenance monitoring level of insulators, improves the work efficiency of operation and maintenance personnel, and reduces the cost of manual inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0022] Figure 1 It is a flowchart of a method for visual inspection of insulator leakage current provided by an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of a device for visual inspection of insulator leakage current provided by an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the structure of a device for visual inspection of insulator leakage current provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] The embodiments of the present application provide a method for visual inspection of insulator leakage current, as Figure 1 shown, the method for visual inspection of insulator leakage current specifically includes steps S101-S105:

[0027] S101. Determine the spatial position information of several insulators in the transmission line.

[0028] Specifically, by monitoring and photographing the pan-tilt camera, several insulators are photographed to obtain several initial insulator images and the initial angles of the monitoring pan-tilt camera. The spatial position information of the insulators in the several initial insulator images is identified to obtain the initial position coordinates of each insulator.

[0029] Among them, the initial insulator images are segmented by target similarity to segment out similar insulator images, and it is judged whether the similar insulator images contain complete insulator images.

[0030] In the case where it is determined that the similar insulator image contains a complete insulator image, a two-dimensional plane coordinate system is established for the initial insulator image. And according to the two-dimensional plane coordinate system, the center point coordinates of the similar insulator image are determined, and according to the center point coordinates of the similar insulator image, the initial position coordinates of the insulator are obtained.

[0031] In the case where it is determined that the similar insulator image does not contain a complete insulator image, the similar insulator image is subjected to convolution operation, and through the stacking of multiple convolutional layers, the abstract surface features of the similar insulator image are extracted. Among them, the abstract surface features are the shape features of the insulator. The feature repetition transformation is performed on the abstract surface features to obtain additional basic features. According to the additional basic features, the abstract surface features are supplemented and increased to obtain complete abstract surface features. Through the complete abstract surface features, the similar insulator image is blurred and expanded to obtain a supplemented similar insulator image. The supplemented similar insulator image and the insulator image are overlapped and fused to obtain a supplemented insulator image. And according to the supplemented insulator image, a supplemented two-dimensional plane coordinate system is constructed. According to the supplemented two-dimensional plane coordinate system, the center point coordinates of the supplemented similar insulator image are determined, and according to the center point coordinates of the supplemented similar insulator image, the initial position coordinates of the supplemented insulator are obtained. Among them, the initial position coordinates of the insulator include the initial position coordinates of the supplemented insulator.

[0032] Further, the difference between the initial position coordinates of each insulator and the image center position coordinates is calculated to obtain the horizontal coordinate difference and the vertical coordinate difference of each insulator. The horizontal coordinate difference and the vertical coordinate difference are subjected to angle conversion to obtain the horizontal change angle and the vertical change angle. According to the horizontal change angle and the vertical change angle, the initial monitoring pan-tilt camera angle is adjusted to obtain the actual horizontal angle and the actual vertical angle. And the actual horizontal angles and the actual vertical angles corresponding to several insulators are recorded in the backend server to obtain the spatial position information of several insulators.

[0033] As a feasible implementation, first, the integrity of the insulator image in the initial insulator image is judged. If a complete insulator image is included, a two-dimensional plane coordinate system is directly established. Then, the center point of the segmented similar insulator images is used as the initial coordinates of the insulator, and finally, the coordinates are obtained. If an incomplete insulator image is included, first, the incomplete insulator image is complemented with features to obtain a complete abstract surface feature. Then, according to the complete abstract surface feature, the incomplete partial image is blurred and restored and expanded to obtain a new large image, that is, the similar insulator image is complemented. This image contains a complete insulator image. Then, a two-dimensional plane coordinate system is established for the new large image, and finally, the coordinates of this incomplete insulator are determined. The initial position coordinates of the insulator are of two cases. One is that the insulator image in the initial insulator image is complete, and the other is that the insulator image in the initial insulator image is incomplete. That is, the initial coordinate position of the insulator includes the coordinates under the complete insulator image and the coordinates of the complemented insulator under the incomplete insulator image. These two cases are both the initial position coordinates of the insulator, so that the spatial position coordinates of the insulator in all image cases can be obtained.

[0034] In one embodiment, the visualization intelligent monitoring device initializes and calibrates multiple insulators. The spatial position of the insulators can be manually confirmed or automatically calibrated. For manual confirmation, according to the position of the insulator in the initial insulator image, manual correction is required to make the insulator located at the center of the initial insulator image, and the monitoring pan-tilt camera is controlled to record the spatial position coordinates of the insulator at this time.

[0035] S102. According to the spatial position information of several insulators, the leakage current of the insulators is collected to obtain a recording file.

[0036] Specifically, through the insulator leakage current sensor, the leakage current of several insulators is detected to obtain an induced current. The induced current is converted into a voltage differential, and through a filter and integrator amplifier, the voltage differential is restored to obtain a leakage current value. If the leakage current value is greater than the first preset threshold, the leakage current is recorded through the insulator leakage current sensor to obtain a recording file corresponding to the leakage current. And the recording file is sent to the monitoring pan-tilt camera. Among them, the recording file includes the discharge waveform width and the discharge waveform amplitude of the leakage current.

[0037] As a feasible implementation, the insulator leakage current sensor is a Rogowski coil sensor and adopts an open structure. The installation position is at the top of the insulator. The terminal of the insulator leakage current sensor has a recording function, and the relevant discharge type is determined by comparing the width and amplitude of the discharge waveform in a lightweight database.

[0038] In one embodiment, Figure 2 is a schematic diagram of a visual insulator leakage current monitoring device provided by an embodiment of the present application. As Figure 2 shown, the insulator leakage current sensor charges the rechargeable battery through the solar panel, and the battery realizes power conversion through the power conversion chip to supply power to the insulator leakage current sensor device; the leakage current is obtained by induction through the Rogowski coil. The Rogowski coil does not contain ferromagnetic materials and has no hysteresis effect, and the measurement of the current has a good effect. The current induced from the Rogowski coil is a differential current, and the differential current needs to pass through a low-pass filter circuit and an amplification and integration circuit to be restored to a measurable current, and then sent to the MCU for AD sampling. When the amplitude of the sampling circuit is greater than the set threshold, wave recording is started, the waveform data of the leakage current is recorded, and the leakage current trigger signal and the wave recording file are sent to the visual intelligent monitoring device through the short-range wireless module.

[0039] S103. According to the wave recording file, identify the current discharge waveform to obtain the discharge type.

[0040] Specifically, after the wave recording file is sent to the monitoring platform camera, the weather and meteorology are detected to obtain the micro-meteorological data. Through the preset lightweight intelligent algorithm and the micro-meteorological data, the current discharge waveform of the wave recording file is identified to obtain the corresponding discharge type. Among them, the discharge type includes at least any one of the following: insulator breakdown and short circuit, insulator high-resistance grounding, lightning overcurrent, and corona discharge.

[0041] As a feasible implementation manner, the insulator breakdown and short circuit include insulator bursting and burning through, and the insulator high-resistance grounding includes insulator cracks or several breakdowns. Among them, the main function of the preset lightweight intelligent algorithm is to identify the current discharge waveform of the wave recording file and combine the micro-meteorological data at that time to obtain the discharge type of the insulator.

[0042] S104. According to the discharge type, control the monitoring platform camera to rotate and identify to obtain the inspection image.

[0043] Specifically, according to the discharge type, the spatial position information of the insulator corresponding to each discharge type is identified. The monitoring platform camera is controlled to rotate to the spatial position of the corresponding insulator, and visible light and infrared identification and photographing of the insulator are performed to obtain the inspection image. Among them, the inspection image includes a visible light image and an infrared image. If no discharge type is matched, it will return to the daily inspection.

[0044] In one embodiment, as Figure 2As shown, the visual intelligent monitoring device primarily consists of a solar power module, a visible light camera, an infrared thermal imaging lens, an intelligent control core, a rotating pan / tilt (PTZ), and a micro-meteorological module. The pan / tilt (PTZ) of the visual intelligent monitoring device can rotate ±180° horizontally and ±90° vertically. The solar power management module includes a solar panel, a lithium battery, and a charging control circuit. The solar panel charges the lithium battery through the control circuit and provides protection against lightning, overvoltage, and overcurrent. The intelligent control module controls the PTZ, visible light camera, and infrared thermal imaging. The visible light images and infrared thermal imaging data generated during inspections are sent to the front-end intelligent analysis module for insulator data identification and processing, with the analysis results uploaded to a server via a 4G / 5G network. The micro-meteorological module transmits collected data to the intelligent control module via radio frequency, enabling the collection of environmental status information and providing meteorological correlation for insulator leakage current.

[0045] In one embodiment, when freezing rain and ice form on insulators, the insulation performance is reduced, which will cause leakage current in the insulators, and in severe cases, a short circuit. Through leakage current detection, the current status information of the insulator can be discovered in time, and the ice thickness can be measured through image inspection to confirm the alarm. The background will trigger the ice melting operation in time to avoid power outages.

[0046] S105. Determine the damage conditions of several insulators based on the inspection images and the wave recording files.

[0047] Specifically, a preset intelligent analysis algorithm analyzes the inspection images for content analysis, identifying surface damage characteristics and heating effects on insulators. These characteristics include at least one of the following: insulator defects, cracks, surface contamination, and ice thickness. These characteristics and heating effects are then combined with micrometeorological data to determine the type of insulator damage alarm. Micrometeorological data is obtained through weather monitoring, and insulator damage alarm types include at least one of the following: insulator damage alarm, contamination coverage alarm, excessive ice thickness alarm, and leakage current overheating alarm.

[0048] Furthermore, inspection images, waveform recordings, insulator damage alarm types, leakage current values, and micro-meteorological data are statistically analyzed for each insulator to generate comprehensive inspection data. This comprehensive inspection data is then sent to the back-end server in the control platform, enabling operations and maintenance personnel to conduct visual inspections of multiple insulators.

[0049] As a feasible implementation, by viewing the comprehensive detection data of the backend servers of the control platform, the operation and maintenance personnel can clearly and intuitively know the damage situation of each insulator, so as to facilitate the operation and maintenance personnel to count the specific content of the above data for the corresponding insulator according to the visual inspection images, oscillogram files, insulator damage alarm types, leakage current values, and micro-meteorological data, and analyze the existing potential safety hazards for the insulator based on the specific content of the statistics, and use this as the basis for operation and maintenance judgment to handle the potential hazards, ensuring the safe operation of power transmission, and also improving the operation and maintenance monitoring level and accuracy of the insulator.

[0050] In addition, the embodiment of the present application also provides a visual insulator leakage current inspection device, as Figure 3 shown, the visual insulator leakage current inspection device 300 specifically includes:

[0051] At least one processor 301, and a memory 302 communicatively connected to the at least one processor 301. Wherein, the memory 302 stores instructions that can be executed by the at least one processor 301, so that the at least one processor 301 can execute:

[0052] Determine the spatial positions of a number of insulators;

[0053] Collect the leakage current of the insulators according to the spatial positions of the number of insulators to obtain an oscillogram file;

[0054] Identify the current discharge waveform according to the oscillogram file to obtain the discharge type;

[0055] Control the monitoring pan-tilt camera to rotate and identify according to the discharge type to obtain inspection images;

[0056] Determine the damage situation of a number of insulators according to the inspection images and the oscillogram file.

[0057] The embodiment of the present application provides a visual insulator leakage current inspection method and device. By realizing the communication between the leakage current detection device and the visual intelligent monitoring device through short-distance wireless communication, not only the hardware cost is saved, but also the edge data processing ability is improved. For the insulators with early warnings, trigger visual images and infrared thermal imaging inspections, and perform intelligent analysis and identification of defect potential hazards on the inspection image information, and combine with meteorological information for comprehensive analysis and confirmation, reducing the false alarm rate of insulator detection, improving the accuracy of potential hazard identification, providing visual analysis and operation and maintenance judgment basis for operation and maintenance personnel, greatly improving the operation and maintenance monitoring level of insulators. At the same time, it improves the work efficiency of operation and maintenance personnel and reduces the cost of manual inspection.

[0058] The various embodiments in this application are described in a progressive manner. For the parts that are the same or similar among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description of the method embodiments.

[0059] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0060] The above is only the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included within the scope of the claims of the present application.

Claims

1. A visual inspection method for insulator leakage current, characterized in that, The method includes: Determine the spatial position information of several insulators in the transmission line, specifically including: Take pictures of several of the insulators through a monitoring pan-tilt camera to obtain several initial insulator images and the initial angle of the monitoring pan-tilt camera; Identify the spatial position information of the insulators in several of the initial insulator images to obtain the initial position coordinates of each insulator, specifically including: Perform target similarity segmentation on the initial insulator images, segment out similar insulator images, and determine whether the similar insulator images contain complete insulator images; When it is determined that the similar insulator image contains a complete insulator image, establish a two-dimensional plane coordinate system for the initial insulator image; According to the two-dimensional plane coordinate system, determine the center point coordinates of the similar insulator image, and based on the center point coordinates of the similar insulator image, obtain the initial position coordinates of the insulator; When it is determined that the similar insulator image does not contain a complete insulator image, perform convolution operation on the similar insulator image to extract the abstract surface features of the similar insulator image; wherein, the abstract surface features are the shape features of the insulator; Perform feature repetition transformation on the abstract surface features to obtain additional basic features; According to the additional basic features, perform complement and increase on the abstract surface features to obtain complete abstract surface features; Through the complete abstract surface features, perform fuzzy expansion on the similar insulator image to obtain a complemented similar insulator image; Overlap and fuse the complemented similar insulator image with the insulator image to obtain a complemented insulator image; and construct a complemented two-dimensional plane coordinate system according to the complemented insulator image; According to the complemented two-dimensional plane coordinate system, determine the center point coordinates of the complemented similar insulator image, and based on the center point coordinates of the complemented similar insulator image, obtain the initial position coordinates of the complemented insulator; wherein, the initial position coordinates of the insulator include the initial position coordinates of the complemented insulator; Perform difference calculation on the initial position coordinates of each insulator and the image center position coordinates to obtain the horizontal coordinate difference and vertical coordinate difference of each insulator; Convert the horizontal coordinate difference and vertical coordinate difference into angles to obtain the horizontal change angle and vertical change angle; According to the horizontal change angle and vertical change angle, adjust the initial angle of the monitoring pan-tilt camera to obtain the actual horizontal angle and actual vertical angle; and record the actual horizontal angle and actual vertical angle corresponding to several of the insulators in the back-end server to obtain the spatial position information of several of the insulators; Collect the leakage current of the insulators according to the spatial position information of several of the insulators to obtain a recording file; Perform current discharge waveform recognition according to the recording file to obtain the discharge type; According to the discharge type, control the monitoring pan-tilt camera to rotate and identify to obtain an inspection image; Determine the damage conditions of several of the insulators according to the inspection image and the recording file.

2. The visual inspection method for insulator leakage current according to claim 1, wherein Collecting leakage current of the insulators according to the spatial position information of the plurality of insulators to obtain a recording file specifically includes: Using an insulator leakage current sensor, leakage current is detected on a plurality of the insulators to obtain an induced current; wherein the insulator leakage current sensor is installed at the top of the insulator; Converting the induced current into a voltage differential, and restoring the voltage differential through a filter integrating amplifier to obtain a leakage current value; If the leakage current value is greater than the first preset threshold, the leakage current is recorded by the insulator leakage current sensor to obtain a recording file corresponding to the leakage current; and the recording file is sent to the monitoring pan-tilt camera; wherein, the recording file includes the discharge waveform width and discharge waveform amplitude of the leakage current.

3. The visual inspection method for insulator leakage current according to claim 2, characterized in that According to the recording file, the current discharge waveform is identified to obtain the discharge type, which specifically includes: After the recorded wave file is sent to the monitoring PTZ camera, the weather is detected to obtain micro-meteorological data; The current discharge waveform of the recorded file is identified using a preset lightweight intelligent algorithm and the micrometeorological data to obtain the corresponding discharge type; wherein the discharge type includes at least any one of the following: insulator breakdown short circuit, insulator high-resistance grounding, lightning overcurrent and corona discharge.

4. The visual inspection method for leakage current of insulators according to claim 1, characterized in that, According to the discharge type, the monitoring PTZ camera is controlled to rotate and identify the discharge to obtain an inspection image, specifically including: According to the discharge type, identifying spatial position information of the insulator corresponding to the discharge type; The monitoring pan-tilt camera is controlled to rotate to the corresponding spatial position of the insulator, and the insulator is photographed using visible light and infrared recognition to obtain the inspection image; wherein the inspection image includes a visible light image and an infrared image.

5. A visual inspection method for insulator leakage current according to claim 1, characterized in that Determining damage conditions of the plurality of insulators according to the inspection image and the recording file specifically includes: The inspection image is analyzed for content using a preset intelligent analysis algorithm to obtain surface damage characteristics and heating effects of the insulator; wherein the surface damage characteristics of the insulator include at least any one of the following: insulator defects, insulator cracks, insulator surface contamination, and insulator ice thickness; The surface damage characteristics and heating effects of the insulator are combined with micro-meteorological data to obtain an insulator damage alarm type; wherein the micro-meteorological data is obtained by detecting weather and meteorology, and the insulator damage alarm type includes at least any one of the following: insulator damage alarm, contamination coverage alarm, excessive ice cover alarm, and leakage current overheating alarm.

6. The visual inspection method for insulator leakage current according to claim 5, characterized in that, After determining damage conditions of the plurality of insulators based on the inspection image and the waveform recording file, the method further includes: Performing statistical analysis on the inspection image, the recorded wave file, the insulator damage alarm type, the leakage current value, and the micro-meteorological data to obtain comprehensive detection data; The comprehensive detection data is sent to the back-end server in the control platform to enable operation and maintenance personnel to perform visual inspections of the insulators.

7. A visual inspection device for insulator leakage current, characterized in that, The device comprises: 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 to enable the at least one processor to execute a method for visual inspection of insulator leakage current according to any one of claims 1-6.

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