Transformer internal inspection management method, system and device and computer equipment

Abstract

The invention relates to the technical field of transformer maintenance, and discloses a transformer internal inspection management method, system and device and computer equipment, and the method comprises the steps: carrying out the environment detection, safety condition inspection and tool inspection of the transformer internal inspection work in sequence, and judging whether the environment, safety conditions and tools meet the internal inspection requirements or not; when the internal inspection requirements are met, oil discharge and oil injection monitoring and transformer internal device inspection are sequentially carried out on the interior of the transformer, whether oil discharge, oil injection and transformer internal devices meet the internal inspection requirements or not is judged, and an internal inspection result of the transformer is obtained; and formulating a fault processing scheme based on the internal detection result of the transformer, and processing the internal fault of the transformer based on the fault processing scheme. According to the invention, possible damage to human bodies and equipment caused by environment, foreign matters, misoperation and the like during on-site internal inspection is avoided, and unsafe incidents such as switching-on explosion and fire outbreak of the transformer caused by internal inspection pollution are completely eradicated.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer maintenance, and in particular to a transformer internal inspection management method, system, device and computer equipment. Background Art

[0002] Power transformers play a vital role in power systems, transforming voltage, optimizing power transmission, reducing wire losses, and improving power transmission efficiency. This transformation capability enables transformers to serve as a bridge connecting power grids of varying voltage levels, enabling flexible scheduling and efficient transmission of electrical energy. Beyond their basic functions, transformers also play a crucial role in maintaining system stability and protecting equipment within power systems. By properly configuring the transformer's capacity, ratio, and wiring, system loads can be effectively balanced, reducing voltage fluctuations and power quality issues. In the event of a power grid fault, the transformer's internal protection devices can respond quickly, shutting off the fault current and preventing equipment damage and the escalation of the incident, thereby ensuring the overall stability and safety of the power system.

[0003] Currently, oil-immersed transformers are almost exclusively used in power systems with voltage levels of 110kV and above. Oil-immersed transformers have the advantages of excellent insulation performance, good heat dissipation, moisture and noise resistance, easy maintenance, and high efficiency. However, oil-immersed transformers may cause serious consequences such as explosions and fires when encountering high-energy discharge faults. Therefore, their safety and reliability are of great significance to the power system and even the entire society.

[0004] In recent years, the industry has vigorously promoted intelligent maintenance of power equipment. The internal inspection method for oil-immersed transformers has gradually shifted from manual to robotic. However, robotic internal inspection still faces many challenges, especially signal interference and inconvenient operation. Often, faults are discovered but cannot be corrected, and manual internal inspection is still required to eliminate the defect. Therefore, manual internal inspection cannot be replaced for a period of time. In fact, with the exception of some ultra-high voltage 1000kV transformers that use robotic internal inspection, the vast majority of oil-immersed transformers in manufacturers and operating sites still require manual internal inspection. Internal inspection of oil-immersed transformers is a critical and difficult maintenance task. Due to the uneven technical level of maintenance units and inconsistent process procedures and personnel operations, the industry has repeatedly experienced serious incidents such as personal injury, internal transformer contamination, and even explosions and fires during internal inspections.

[0005] Therefore, there is an urgent need for a full-process management method for internal inspection of oil-immersed transformers to avoid personal injury, internal contamination of the transformer, and even serious incidents of explosion and fire during the internal inspection process in the existing technology. Summary of the Invention

[0006] In view of this, the present invention provides a transformer internal inspection management method, system, device and computer equipment to solve the problems in the prior art of personal injury, internal contamination of the transformer and even serious explosion and fire incidents during the internal inspection process.

[0007] In a first aspect, the present invention provides a transformer internal inspection management method, the method comprising:

[0008] Conduct environmental testing, safety condition inspection and tool inspection for transformer internal inspection work in sequence, and determine whether the environment, safety conditions and tools meet the internal inspection requirements;

[0009] When the internal inspection requirements are met, the transformer is sequentially inspected for oil draining and oil filling, as well as internal components. It is determined whether the oil draining and oil filling, as well as internal components of the transformer meet the internal inspection requirements, and the transformer internal inspection results are obtained.

[0010] A fault handling plan is developed based on the transformer internal inspection results, and the transformer internal faults are handled based on the fault handling plan.

[0011] The present invention provides a transformer internal inspection management method, which formulates strategies for transformer internal inspection operator safety, environmental monitoring, foreign matter control, and fault handling, thereby improving the success rate of discovering and handling faults during internal inspection of oil-immersed transformers, effectively reducing the adverse effects of internal inspection of oil-immersed transformers on the internal insulation level of the transformer, avoiding damage to personnel and equipment caused by the environment, foreign matter, operational errors, etc. during on-site internal inspection, and preventing the occurrence of unsafe incidents such as transformer closing explosion and fire caused by internal inspection pollution, thereby solving the problems of personal injury, internal transformer pollution, and even serious explosion and fire incidents during internal inspection in the prior art.

[0012] In an optional embodiment, the transformer internal inspection work is sequentially subjected to environmental testing, safety condition inspection, and tool inspection, and it is determined whether the environment, safety conditions, and tools meet the internal inspection requirements, including:

[0013] Test the environmental parameters of the transformer internal inspection site and determine whether the environmental parameters meet the internal inspection requirements;

[0014] Check the safety conditions of the personnel performing internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements;

[0015] Check the appearance and binding status of tools brought in for internal inspection of transformers and record them in the register.

[0016] The present invention provides a transformer internal inspection management method that detects and determines environmental parameters at the transformer internal inspection site, enabling early identification of environmental factors unsuitable for internal inspection, such as severe weather and excessive temperature and humidity. Internal inspections are conducted in adverse environments to prevent contamination or damage to the transformer's internal insulation due to environmental issues, thereby ensuring the transformer's performance and safety during the internal inspection. Strict inspections of the safety conditions of workers can promptly identify problems such as abnormal mental states and improper wearing of safety and labor protection equipment. Internal inspections are conducted only when safety conditions meet requirements, eliminating accidents caused by personnel safety hazards at the source and ensuring the personal safety of workers throughout the internal inspection process. The appearance and binding status of tools are inspected and recorded. This, on the one hand, allows for the timely detection of problems such as damage to tools, preventing the use of defective tools that may affect the internal inspection work; on the other hand, by recording the status of tools, a quick comparison can be performed after the internal inspection to ensure the consistency of tool quantity and status, preventing tools from being lost or left inside the transformer and eliminating potential safety risks.

[0017] In an optional embodiment, the environmental parameters include on-site weather parameters, temperature and humidity parameters, particle size in the oil used for internal inspection, and insulation resistance;

[0018] Test the on-site environmental parameters where the transformer internal inspection is performed and determine whether the on-site environmental parameters meet the internal inspection requirements, including:

[0019] The weather parameters at the transformer internal inspection site are detected through wireless Internet technology, the temperature and humidity parameters at the transformer internal inspection site are detected through temperature and humidity sensors, the oil filter and oil tank samples used for internal inspection are sampled for online oil particle size detection, and the insulation resistance of the transformer before internal inspection is detected through an insulation resistance tester;

[0020] When the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the corresponding first preset conditions, it is determined that the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0021] The present invention provides a transformer internal inspection management method, which comprehensively utilizes wireless Internet technology, temperature and humidity sensors, online oil particle size detection, insulation resistance testers and other technical means to conduct a comprehensive detection of the transformer internal inspection site environment from multiple dimensions such as weather, temperature and humidity, oil particle size, and insulation resistance. It avoids the limitations of a single detection method, ensures the integrity and accuracy of environmental parameter detection, and provides sufficient environmental information support for internal inspection work. Strictly controlling whether environmental parameters meet internal inspection requirements can ensure that the transformer is internally inspected under appropriate environmental conditions. It avoids damage to the internal insulation of the transformer due to environmental problems such as bad weather, excessive temperature and humidity, ensures the performance safety of the transformer, extends its service life, and improves the reliability and stability of the transformer operation.

[0022] In an optional embodiment, the safety conditions include the mental state of the operator, the wearing of safety labor protection equipment, the transformer internal inspection path, the oxygen content inside the transformer, and the lighting level inside the transformer;

[0023] Check the safety conditions of the personnel performing internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements, including:

[0024] The human-computer interaction control screen is used to check the mental state of the transformer internal inspection workers, the safety and labor protection equipment they wear, and the transformer internal inspection path; the oxygen content inside the transformer is checked through an oxygen meter; and the illumination level inside the transformer is detected through an illumination sensor;

[0025] When the operator's mental state, the wearing of safety and labor protection supplies, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the corresponding second preset conditions, it is determined that the operator's mental state, the wearing of safety and labor protection supplies, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0026] The transformer internal inspection management method provided by this invention examines multiple dimensions, including the operator's mental state, the safety and protective equipment worn, the internal inspection route, internal oxygen levels, and illumination levels. These factors encompass key safety factors, including the operator's physical condition, protective measures, and the working environment. This method avoids safety accidents caused by poor operator condition, inadequate protective measures, or environmental hazards, providing comprehensive safety protection for operators and ensuring their personal safety during the internal inspection process.

[0027] In an optional embodiment, the oil draining and filling monitoring includes the oil filling and draining speed of the transformer, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and the vacuum unit; the internal components of the transformer include the iron core, insulation, fasteners, leads and coils;

[0028] The oil draining and filling of the transformer and the inspection of the internal components of the transformer are carried out in sequence to obtain the internal defect results of the transformer, and to determine whether the oil draining and filling and the internal components of the transformer meet the internal inspection requirements. The transformer internal inspection results are obtained, including:

[0029] By installing a flow meter at the end of the transformer oil filling and discharge pipe to monitor the transformer oil filling and discharge speed, monitoring the oil temperature at the oil filter outlet through a temperature sensor, and monitoring the vacuum degree of the transformer and the vacuum unit through a vacuum gauge, when the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet through the temperature sensor, and the vacuum degree of the transformer and the vacuum unit through the vacuum gauge meet the third preset condition, it is determined that the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet through the temperature sensor, and the vacuum degree of the transformer and the vacuum unit through the vacuum gauge meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements;

[0030] The transformer's internal components, including the iron core, insulation, fasteners, leads, and coils, are inspected to detect one or more of the following: iron core heating, insulation carbonization, lead wire breakage, and coil collapse. The transformer internal inspection results include transformer internal inspection failure results and transformer internal inspection qualified results.

[0031] The present invention provides a transformer internal inspection management method, which monitors the transformer oil filling and draining speed, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and vacuum unit in real time by installing flow meters, temperature sensors and vacuum gauges at key positions, and determines whether the requirements are met based on the third preset condition. It can promptly discover and correct process deviations such as too fast or too slow speed, abnormal oil temperature, and substandard vacuum degree during oil filling and draining, and avoid problems such as moisture in the transformer's internal insulation and reduced insulation strength due to improper process, ensuring that the oil filling and draining process strictly follows the process standards and protects the transformer's performance from being damaged. A comprehensive inspection of key components such as the transformer's internal iron core, insulation, fasteners, leads and coils can accurately identify common faults such as iron core heating, insulation carbonization, lead breakage, and coil inversion. This targeted inspection method can quickly locate the fault location and type, provide a detailed basis for the subsequent formulation of accurate and effective fault handling plans, and improve the efficiency and accuracy of fault diagnosis.

[0032] In an optional embodiment, a fault handling plan is formulated based on the transformer internal inspection result, and the transformer internal fault is handled based on the fault handling plan, including:

[0033] A corresponding fault handling plan is formulated based on the transformer internal fault inspection results, and the transformer internal fault is handled based on the fault handling plan.

[0034] The present invention provides a transformer internal inspection management method that formulates a treatment plan based on the transformer internal inspection fault results. It can tailor corresponding treatment measures to different types of faults (such as core heating, insulation carbonization, and lead wire breakage). This avoids a "one-size-fits-all" approach and ensures that each fault receives the most appropriate solution, accurately resolving the problem at its root, thereby improving the accuracy and effectiveness of fault handling.

[0035] In an optional implementation, the transformer internal inspection management method further includes:

[0036] Use electronic monitoring and scanning methods to check for foreign objects on the bottom of the transformer box, internal components of the transformer, operators and fault handling operations, and clean up any foreign objects found;

[0037] The entire process of transformer internal inspection, including environmental monitoring, safety condition inspection, tool inspection, oil draining and filling monitoring, transformer internal component inspection, and fault handling, is recorded using surveillance cameras worn by operators and deployed at the internal inspection site to monitor and trace the transformer internal inspection work.

[0038] After the internal inspection of the transformer is completed, compare the tools used by the operator with those used at the beginning of the internal inspection to see if they are consistent.

[0039] The present invention provides a transformer internal inspection management method that uses electronic monitoring and scanning methods to inspect the bottom of the transformer box, internal components, operators, and fault handling operations for foreign objects, and can comprehensively detect metal and non-metallic foreign objects. It prevents foreign objects from being left inside the transformer during the internal inspection process, prevents foreign objects from entering the high-field strength area with the oil flow during operation, and prevents serious accidents such as insulation breakdown and discharge, thereby eliminating equipment damage and safety risks caused by foreign objects from the source. Through monitoring cameras worn by operators and deployed on site, the entire process of transformer internal inspection is recorded and videotaped, realizing real-time supervision of various links such as environmental monitoring, safety inspection, and tool management. Once safety and quality problems arise, the operation process can be quickly traced through the video recording to clarify the responsibility. At the same time, it also provides intuitive and detailed information for subsequent problem analysis and improvement work, ensuring that the internal inspection work strictly follows the standard process. After the internal inspection work is completed, the consistency of the tools before and after the operation is compared to promptly detect whether the tools are damaged, lost, or missing. It prevents tools from being left inside the transformer and causing faults, while ensuring the integrity of the tools required for internal inspection work, facilitating subsequent work.

[0040] In a second aspect, the present invention provides a transformer internal inspection management system, the system comprising: a first inspection device, an information sensor, a second inspection device, a human-computer interaction control screen, and a controller;

[0041] The first inspection device is used to sequentially perform environmental testing and safety condition checks on the transformer internal inspection work. The human-machine interactive control screen is used to check tools. The parameters of the first inspection device and the human-machine interactive control screen are transmitted to the controller through information sensors using the Internet of Things technology. The controller then determines whether the environment, safety conditions, and tools meet the internal inspection requirements.

[0042] The second inspection device is used to monitor the oil drainage and oil filling of the transformer and inspect the internal components of the transformer in sequence when the internal inspection requirements are met, and to determine whether the oil drainage and oil filling and the internal components of the transformer meet the internal inspection requirements. The parameters of the second inspection device are transmitted to the controller through the information sensor using the Internet of Things technology, and the controller is analyzed to obtain the transformer internal inspection results;

[0043] The controller is also used to formulate a fault handling plan based on the transformer internal inspection result, and handle the transformer internal fault based on the fault handling plan.

[0044] In a third aspect, the present invention provides a transformer internal inspection management device, the device comprising:

[0045] The pre-inspection inspection module is used to perform environmental inspection, safety condition inspection and tool inspection on the transformer internal inspection work in sequence, and determine whether the environment, safety conditions and tools meet the internal inspection requirements;

[0046] The internal inspection module is used to monitor the oil draining and filling of the transformer and inspect the internal components of the transformer in turn when the internal inspection requirements are met, and to determine whether the oil draining and filling and the internal components of the transformer meet the internal inspection requirements, and obtain the transformer internal inspection results;

[0047] The internal inspection post-processing module is used to formulate a fault handling plan based on the transformer internal inspection results and handle the transformer internal faults based on the fault handling plan.

[0048] In a fourth aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to thereby execute the transformer internal inspection management method of the first aspect or any corresponding embodiment thereof.

[0049] In a fifth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the transformer internal inspection management method of the first aspect or any corresponding embodiment thereof.

[0050] In a sixth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the transformer internal inspection management method of the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0052] Figure 1 is a flow chart of a transformer internal inspection management method according to an embodiment of the present invention;

[0053] Figure 2 is a flow chart of another transformer internal inspection management method according to an embodiment of the present invention;

[0054] Figure 3 is a flowchart of another transformer internal inspection management method according to an embodiment of the present invention;

[0055] Figure 4 is a flow chart of another transformer internal inspection management method according to an embodiment of the present invention;

[0056] Figure 5 2 is a structural block diagram of a transformer internal inspection management device according to an embodiment of the present invention;

[0057] Figure 6 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0059] Most insulation faults within oil-immersed transformers are directly reflected in the chromatographic analysis results of the transformer oil. Therefore, if the transformer oil chromatographic data exceeds the standard, it will become a major equipment hazard. Timely and effective inspection measures must be taken to determine whether the transformer can continue to operate. Internal inspection is the fastest, most convenient, and most cost-effective method for inspecting oil-immersed transformers during power outages. Compared with live inspections, internal inspections are more intuitive and can save significant time and resources compared to hanging cover inspections or factory repairs. They are suitable as a pre-inspection for hanging cover or factory repairs. If the fault point is discovered during internal inspection, the anomaly can be accurately identified and addressed, significantly reducing construction time and costs. Internal inspection of oil-immersed transformers is a critical and difficult maintenance task. Due to the varying technical levels of maintenance units, inconsistent process flows, and personnel operations, the industry has repeatedly experienced serious incidents of personal injury, internal transformer contamination, and even explosions and fires during internal inspections.

[0060] The embodiment of the present invention provides a transformer internal inspection management method. By managing the entire process of internal inspection of an oil-immersed transformer, it achieves the effect of avoiding damage to personnel and equipment caused by the environment, foreign objects, operational errors, etc. during on-site internal inspection, and preventing unsafe incidents such as transformer explosion and fire caused by internal inspection pollution.

[0061] According to an embodiment of the present invention, an embodiment of a transformer internal inspection management method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0062] In this embodiment, a transformer internal inspection management method is provided, which can be used in a transformer internal inspection management system. Figure 1 FIG. 1 is a flow chart of a transformer internal inspection management method according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0063] In step S101, the internal inspection of the transformer is sequentially performed on the environment, safety conditions and tools, and it is determined whether the environment, safety conditions and tools meet the internal inspection requirements.

[0064] Specifically, the transformer of this embodiment is an oil-immersed transformer.

[0065] Before the internal inspection of oil-immersed transformers begins, comprehensive testing of on-site environmental parameters is carried out using a variety of technical means, including on-site weather parameters, temperature and humidity parameters, particle size in the oil used for internal inspection, and insulation resistance.

[0066] The safety condition inspection is mainly set for internal inspection personnel, including the mental state of the personnel, the wearing of safety labor protection equipment, the internal inspection path of the transformer, the oxygen content inside the transformer and the internal lighting of the transformer.

[0067] The tool inspection mainly focuses on the tools carried by operators when working on the internal parts of the transformer.

[0068] Set corresponding preset conditions for environmental parameters, safety condition inspection and tool inspection respectively. When the preset conditions are met, it is determined that the internal inspection requirements are met; otherwise, it is not met.

[0069] Step S102: When the internal inspection requirements are met, the oil draining and oil filling of the transformer and the internal components of the transformer are inspected in sequence, and it is determined whether the oil draining and oil filling and the internal components of the transformer meet the internal inspection requirements, and the transformer internal inspection result is obtained.

[0070] Specifically, when the inspection before the start of the transformer internal inspection work meets the internal inspection requirements, the transformer internal inspection work is carried out.

[0071] During the transformer oil draining and filling stages, monitoring is performed on the transformer. This monitoring includes process parameters such as the transformer oil filling rate, oil temperature at the oil filter outlet, and the vacuum level of the transformer and vacuum unit. If the oil draining and filling meet the preset conditions, it is determined to meet the internal inspection requirements; otherwise, it does not meet the internal inspection requirements.

[0072] The operating personnel enter the transformer and conduct a detailed inspection of key components such as the iron core, insulation, fasteners, leads and coils according to the predetermined inspection route to check whether there are any abnormalities in the iron core, insulation, fasteners, leads and coils. If no abnormalities occur, the transformer is judged to have passed the internal inspection and a transformer internal inspection pass result is obtained; otherwise, it does not meet the internal inspection requirements and a fault exists, and a transformer internal inspection fault result is obtained.

[0073] Step S103: formulate a fault handling plan based on the transformer internal inspection result, and handle the transformer internal fault based on the fault handling plan.

[0074] Specifically, when the transformer internal inspection results indicate a fault, the fault detection and handling module automatically generates a corresponding fault handling plan based on a pre-set fault handling knowledge base, taking into account the specific fault type and severity. The plan includes detailed information such as the tools, materials, operating procedures, and safety precautions required for troubleshooting.

[0075] According to the fault handling plan, the maintenance personnel collect the necessary tools and materials and handle the internal fault of the transformer according to the operating procedures.

[0076] The transformer internal inspection management method provided in this embodiment formulates strategies for transformer internal inspection operator safety, environmental monitoring, foreign matter control, and fault handling, thereby improving the success rate of fault detection and handling during internal inspection of oil-immersed transformers, effectively reducing the adverse effects of internal inspection of oil-immersed transformers on the internal insulation level of the transformer, avoiding potential damage to personnel and equipment caused by the environment, foreign matter, and operational errors during on-site internal inspections, and preventing unsafe incidents such as explosions and fires during transformer closing caused by internal inspection contamination. This solves the problems of personal injury, internal transformer contamination, and even serious explosions and fires during internal inspections in the prior art.

[0077] In this embodiment, a transformer internal inspection management method is provided, which can be used in a transformer internal inspection management system, including parameter sensors, information sensors, a human-computer interaction control screen and a controller, etc. Figure 2 FIG. 1 is a flow chart of a transformer internal inspection management method according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0078] In step S201, the transformer internal inspection work is sequentially performed on the environment, safety conditions and tools, and it is determined whether the environment, safety conditions and tools meet the internal inspection requirements.

[0079] Specifically, the above step S201 includes:

[0080] Step S2011: Detect the environmental parameters of the transformer internal inspection site and determine whether the environmental parameters meet the internal inspection requirements.

[0081] In some optional embodiments, the environmental parameters include on-site weather parameters, temperature and humidity parameters, particle size in the oil used for internal inspection, and insulation resistance; the above step S2011 includes:

[0082] Step a1: Detect weather parameters at the transformer internal inspection site through wireless Internet technology, detect temperature and humidity parameters at the transformer internal inspection site through temperature and humidity sensors, perform online oil particle size detection on oil filters and oil tank samples used for internal inspection, and detect the insulation resistance of the transformer before internal inspection through an insulation resistance tester.

[0083] Specifically, before starting the transformer internal inspection, a comprehensive test of on-site environmental parameters is conducted using a variety of technical means. Wireless internet technology is used to obtain real-time weather parameters at the worksite, including the presence of inclement weather such as rain, snow, and fog. Temperature and humidity sensors are used to accurately collect temperature and humidity data from the on-site environment. The data collection frequency can be set to once per minute, ensuring real-time and accurate environmental temperature and humidity information.

[0084] Professional sampling equipment is used to collect oil samples from the oil filter and oil tank used for internal inspection. An online oil particle size analyzer is then used to analyze the total number of particles larger than 5μm in the oil sample, with an accuracy of up to the number of particles per 100ml of oil sample. Simultaneously, an insulation resistance tester is used to measure the insulation resistance of the transformer prior to internal inspection, following standard testing procedures.

[0085] Step a2: When the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the corresponding first preset conditions, it is determined that the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0086] The first preset conditions include weather conditions, ambient temperature conditions, relative humidity conditions, oil particle size conditions, and insulation resistance conditions.

[0087] The above environmental parameter detection data is transmitted by the information sensor to the environmental detection module in the controller through the Internet of Things technology to determine whether the environmental parameters meet the internal inspection requirements. For example, (1) weather conditions: no rain, snow, or fog on the day of the transformer internal inspection; (2) environmental temperature conditions and relative humidity conditions: ambient temperature ≤ 40°C, relative humidity ≤ 75%; (3) oil particle size conditions: the total number of particles larger than 5μm and below NAS2 in the oil ≤ 1000 / 100ml; (4) insulation resistance conditions: insulation resistance ≥ 10000MΩ. If the environmental parameters do not meet the internal inspection requirements, an immediate warning will be issued, which can avoid external factors such as bad weather, excessive environmental humidity, contamination of the oil tank and oil filter, and abnormal insulation resistance, which may cause the internal insulation of the transformer to be contaminated and damaged during the internal inspection.

[0088] The transformer internal inspection management method provided in this embodiment comprehensively utilizes multiple technical means such as wireless Internet technology, temperature and humidity sensors, online oil particle size detection, and insulation resistance testers to conduct a comprehensive inspection of the transformer internal inspection site environment from multiple dimensions such as weather, temperature and humidity, oil particle size, and insulation resistance. It avoids the limitations of a single detection method, ensures the integrity and accuracy of environmental parameter detection, and provides sufficient environmental information support for internal inspection work. Strictly controlling whether environmental parameters meet internal inspection requirements can ensure that the transformer is inspected under appropriate environmental conditions. It avoids damage to the internal insulation of the transformer due to environmental problems such as bad weather, excessive temperature and humidity, ensures the performance safety of the transformer, extends its service life, and improves the reliability and stability of the transformer operation.

[0089] Step S2012: Check the safety conditions of the personnel performing the internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements.

[0090] In some optional implementations, the safety conditions include the mental state of the operator, the wearing of safety labor protection equipment, the transformer internal inspection path, the oxygen content inside the transformer, and the lighting inside the transformer; the above step S2012 includes:

[0091] Step b1: Check the mental state of the transformer internal inspection workers, the safety and labor protection equipment they wear, and the transformer internal inspection path through the human-computer interaction control screen, check the oxygen content inside the transformer through the oxygen meter, and detect the internal illumination of the transformer through the illumination sensor.

[0092] Specifically, through a human-machine interactive control screen, a dedicated person conducts individual checks on the mental state of each operator. This includes face-to-face communication, observing the operator's eye contact, verbal expression, and body movements to determine if they are intoxicated, in a trance, or experiencing other abnormalities. Furthermore, the operator is carefully checked against the safety and labor protection equipment list to ensure they are properly wearing the required safety and labor protection equipment, including long-sleeved overalls, helmets, lights, and walkie-talkies. The transformer's internal inspection paths are also inspected to ensure they are unobstructed.

[0093] Use an oxygen meter to conduct multi-point oxygen content detection at different locations inside the transformer (such as the top, middle, and bottom). Each location is detected three times, and the average value is taken as the oxygen content data for that location. Use an illuminance sensor to measure the illumination of each inspection area inside the transformer to ensure that the measurement points are evenly distributed throughout the entire working area.

[0094] Step b2: When the operator's mental state, the safety and labor protection equipment worn, the transformer internal inspection path, the oxygen content inside the transformer, and the transformer internal illumination meet the corresponding second preset conditions, it is determined that the operator's mental state, the safety and labor protection equipment worn, the transformer internal inspection path, the oxygen content inside the transformer, and the transformer internal illumination meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0095] Specifically, the second preset conditions include mental state conditions, safety and labor protection equipment wearing conditions, transformer internal inspection path conditions, transformer internal oxygen content conditions, and transformer internal illumination conditions.

[0096] The above inspection data is transmitted by information sensors to the safety condition inspection module in the controller through the Internet of Things technology to determine whether the safety conditions meet the internal inspection requirements: (1) Mental state condition: The operator is sober and not in abnormal conditions such as drinking or being in a trance; (2) Safety and labor protection equipment wearing condition: All required safety and labor protection equipment are worn correctly; (3) Transformer internal inspection path condition: The transformer internal inspection path is unobstructed and personnel can pass normally; (4) Transformer internal oxygen content condition: The transformer internal oxygen content is ≥18%; (5) Transformer internal illumination condition: The internal illumination is ≥50lx. If abnormal conditions such as low oxygen content and insufficient lighting are detected, the safety condition inspection module will issue a warning in time to ensure the personal safety of the operator during the transformer internal inspection process.

[0097] The transformer internal inspection management method provided in this embodiment conducts inspections from multiple dimensions, including the operator's mental state, the use of safety and protective equipment, the internal inspection route, internal oxygen levels, and illumination levels. These inspections cover key safety factors, including the operator's physical condition, protective measures, and the working environment. This prevents accidents caused by poor operator condition, inadequate protective measures, or environmental hazards, providing comprehensive safety protection for operators and ensuring their personal safety during the internal inspection process.

[0098] Step S2013: Check the appearance and binding status of the tools brought in for the transformer internal inspection and enter them for registration.

[0099] Specifically, the images of the tools brought in for internal inspection are recorded one by one through the human-computer interaction control screen, and the appearance of the tools (such as whether there is damage or deformation) and binding (such as whether the rope is firm) are registered through machine vision technology, and detailed information such as the model, specifications, and quantity of the tools are recorded.

[0100] After the internal inspection is completed, the tools must be inspected and confirmed again using machine vision technology to ensure that the number and status of the tools are consistent before and after the internal inspection. If the tools are damaged, lost or missed, the difference before and after can be discovered in time through machine vision technology, and the tool inspection module will immediately issue a warning.

[0101] Step S202: When the internal inspection requirements are met, the oil draining and oil filling of the transformer and the internal components of the transformer are inspected in sequence, and it is determined whether the oil draining and oil filling and the internal components of the transformer meet the internal inspection requirements, and the transformer internal inspection result is obtained.

[0102] Specifically, the oil draining and filling monitoring includes the oil filling and draining speed of the transformer, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and the vacuum unit; the internal components of the transformer include the iron core, insulation, fasteners, leads and coils; the above step S202 includes:

[0103] Step S2021, by installing a flow meter at the end of the transformer oil filling and discharge pipe to monitor the transformer oil filling and discharge speed, monitoring the oil temperature at the oil filter outlet through a temperature sensor, and monitoring the vacuum degree of the transformer and the vacuum unit through a vacuum gauge. When the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet monitored by the temperature sensor, and the vacuum degree of the transformer and the vacuum unit monitored by the vacuum gauge meet the third preset condition, it is determined that the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet monitored by the temperature sensor, and the vacuum degree of the transformer and the vacuum unit monitored by the vacuum gauge meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0104] Specifically, by monitoring the process parameters of the transformer during the oil draining and filling stages, monitoring the valve opening and closing status by installing a relay, and monitoring the transformer oil filling and discharge speed by installing a flow meter at the end of the oil filling and discharge pipe, the flow meter accuracy can reach ±0.5%; the oil temperature at the oil filter outlet is monitored by a temperature sensor, and the temperature measurement error is controlled within ±1°C; the vacuum degree of the transformer and vacuum unit is monitored by a vacuum gauge, and the vacuum degree measurement range is 0-100Pa, with an accuracy of ±0.1Pa.

[0105] The third preset conditions include the transformer oil filling and discharge speed conditions, the oil temperature conditions at the oil filter outlet, and the vacuum conditions of the transformer and the vacuum unit.

[0106] These process parameter data are transmitted by information sensors to the oil draining and filling monitoring module of the controller through the Internet of Things technology to determine whether the process parameters meet the internal inspection requirements: (1) Transformer oil filling and draining speed condition: oil draining speed ≥ 5t / h; (2) Oil filter outlet oil temperature condition: oil filter outlet oil temperature ≥ 60℃; (3) Transformer and vacuum unit vacuum degree condition: vacuum degree ≤ 13Pa. If the process parameters do not meet the internal inspection requirements, a warning will be issued in time to avoid the problem of moisture in the transformer's internal insulation parts and reduced insulation strength due to failure to meet the oil draining and filling process requirements.

[0107] Step S2022: Inspect the iron core, insulation, fasteners, leads, and coils of the internal components of the transformer to obtain one or more of the following: iron core heating, insulation carbonization, lead wire breakage, and coil collapse, and obtain the transformer internal inspection results, which include transformer internal inspection failure results and transformer internal inspection qualified results.

[0108] Specifically, workers enter the transformer and, following a predetermined inspection path, meticulously inspect key components such as the core, insulation, fasteners, leads, and coils. When inspecting the core, they use an infrared thermometer to measure the core's surface temperature to determine if there's any localized heating. Insulators are visually inspected for abnormalities such as carbonization or cracking. Fasteners are checked for tightening torque compliance using a torque wrench. Leads are visually inspected for broken strands or insulation damage. Coils are inspected for signs of inversion or deformation.

[0109] All kinds of defects found inside the transformer during the internal inspection process, including core heating, carbonization of insulation parts, loose fasteners, broken leads, coil inversion and other abnormalities and defects, are photographed and registered through the human-computer interaction control screen. These data are transmitted to the fault detection and processing module of the controller by information sensors through the Internet of Things technology, and the processing plan is checked in real time or timely communication is carried out with external professionals. Targeted fault handling plans are quickly formulated and the processing process is supervised to ensure the processing effect. If no abnormalities are found, the transformer is judged to have passed the internal inspection. Step S203, formulate a fault handling plan based on the transformer internal inspection results, and handle the internal fault of the transformer based on the fault handling plan. For details, please see Figure 1 Step S103 of the illustrated embodiment will not be described in detail here.

[0110] The transformer internal inspection management method provided in this embodiment monitors the transformer oil filling and draining speed, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and vacuum unit in real time by installing flow meters, temperature sensors, and vacuum gauges at key locations, and determines whether the requirements are met based on the third preset condition. It can promptly detect and correct process deviations such as excessive speed or slowness, abnormal oil temperature, and substandard vacuum degree during oil filling and draining, and avoid problems such as moisture in the transformer's internal insulation and reduced insulation strength due to improper processes. It ensures that the oil filling and draining process strictly follows the process standards and protects the transformer's performance from being damaged. A comprehensive inspection of key components such as the transformer's internal iron core, insulation, fasteners, leads, and coils can accurately identify common faults such as core heating, insulation carbonization, lead breakage, and coil inversion. This targeted inspection method can quickly locate the fault location and type, provide a detailed basis for the subsequent formulation of accurate and effective fault handling plans, and improve the efficiency and accuracy of fault diagnosis.

[0111] In this embodiment, a transformer internal inspection management method is provided, which can be used in a transformer internal inspection management system, including inspection devices, information sensors, human-computer interaction control screens and controllers, etc. Figure 3 FIG. 1 is a flow chart of a transformer internal inspection management method according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0112] Step S301: Perform environmental testing, safety condition inspection, and tool inspection on the transformer internal inspection work in sequence, and determine whether the environment, safety conditions, and tools meet the internal inspection requirements. Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0113] Step S302: If the internal inspection requirements are met, the transformer is sequentially drained and filled with oil, and the internal components of the transformer are inspected. It is determined whether the draining and filling of oil and the internal components of the transformer meet the internal inspection requirements, and the transformer internal inspection results are obtained. Figure 2 Step S202 of the illustrated embodiment will not be described in detail here.

[0114] Step S303: formulate a fault handling plan based on the transformer internal inspection result, and handle the transformer internal fault based on the fault handling plan.

[0115] Specifically, the above step S303 includes:

[0116] Step c: formulating a corresponding fault handling plan based on the transformer internal fault inspection result, and handling the transformer internal fault based on the fault handling plan.

[0117] When the transformer internal inspection results indicate a fault, the fault detection and handling module automatically generates a corresponding fault handling plan based on the preset fault handling knowledge base, the specific fault type, and severity. The plan includes detailed information such as the tools, materials, operating procedures, and safety precautions required for troubleshooting.

[0118] Maintenance personnel, according to the troubleshooting plan, collect the necessary tools and materials and follow the steps to address the transformer's internal fault. During the process, the system monitors the repair progress and operating procedures in real time, and records the entire process through on-site surveillance cameras and cameras worn by the operators. If maintenance personnel encounter any problems during the process, they can communicate remotely with external professionals through the system to obtain technical support, ensuring the fault is effectively addressed. After the troubleshooting is complete, the transformer is fully inspected again to confirm that the fault has been eliminated and meets operational requirements.

[0119] Step S304: electronic monitoring and scanning are used to inspect the transformer bottom, internal components of the transformer, operators, and fault handling operations for foreign objects, and any foreign objects found are cleaned.

[0120] Specifically, foreign matter includes metallic and non-metallic objects. Before the transformer internal inspection begins, electronic monitoring equipment, such as high-definition cameras, metal detectors, and non-metallic object scanners, is deployed around and within key locations around the transformer. These areas are automatically scanned every 10 minutes, focusing on identifying foreign matter such as metal debris, fibers, and plastic that could affect the safe operation of the transformer.

[0121] Through electronic monitoring and scanning, metal and non-metallic foreign objects in the bottom of the transformer box, transformer body, iron core, magnetic shielding, outgoing line device, internal inspection personnel, and fault handling operations are thoroughly inspected and warned, and the cleaning of foreign objects is recorded to avoid foreign objects discovered and left behind during the internal inspection from remaining inside the transformer. During operation, foreign objects will flow with the oil to the high field strength area, causing insulation breakdown and discharge, resulting in damage to personnel and equipment.

[0122] It should be noted that before entering the transformer, operators are required to pass through a dedicated security checkpoint equipped with full-body metal detectors and non-metallic foreign object detection devices to perform comprehensive scans of clothing, tool bags, etc. During troubleshooting operations, portable metal detectors and miniature high-definition cameras provide real-time monitoring of the work area and operational procedures to ensure that no foreign objects are generated or left behind during the handling process.

[0123] In step S305, the entire process of transformer internal inspection, including environmental monitoring, safety condition inspection, tool inspection, oil drainage and oil filling monitoring, transformer internal component inspection, and fault handling, is recorded using surveillance cameras worn by operators and surveillance cameras deployed at the internal inspection site to supervise and trace the transformer internal inspection work.

[0124] Specifically, multiple 360-degree high-definition surveillance cameras are deployed at the transformer internal inspection site to ensure that there are no blind spots in the inspection area. The cameras are installed 2-2.5 meters above the ground, covering the entire workspace. Each operator is also equipped with a portable, waterproof, and drop-resistant surveillance camera, which is fixed to the front of the helmet to ensure clear images and fully record the operator's operation process.

[0125] This data is transmitted via IoT technology from information sensors to an audio-visual monitoring and traceability module. This allows for comprehensive control over all aspects of transformer internal inspection, including environmental testing, personnel safety checks, troubleshooting, and foreign object control. This ensures that every person, parameter, tool, and operation is recorded and traceable. Any anomalies in safety or quality management trigger an active alert, and closed-loop procedures are not permitted until qualified resolution is achieved. The traceability process after the transformer internal inspection is completed can effectively improve its quality, avoid transformer short-circuit failures caused by improper operation, the presence of foreign objects, and other misoperations, and prevent serious equipment damage accidents such as explosions and fires.

[0126] Step S306: After the transformer internal inspection is completed, the tools used by the operator are compared with the tools used at the beginning of the transformer internal inspection to see if they are consistent.

[0127] Specifically, before the internal inspection work begins, the operators place all tools neatly in a dedicated tool placement area, take multi-angle high-definition photos of each tool through the image entry function on the human-computer interaction control screen, and use machine vision technology to extract the tool's characteristic information (such as shape, size, surface texture), generate a unique electronic identification code, and store it in the tool management database together with the tool's name, model, quantity and other information.

[0128] After the internal inspection is complete, the operator gathers the tools and instruments back into the storage area. The system automatically activates the machine vision recognition program to scan and identify the tools and instruments. By comparing the current tools' electronic identification codes, quantity, and appearance with the initially entered information, if any tools are found to have inconsistent quantity, or are damaged or deformed, the system immediately issues an alarm, highlights the details of the abnormal tools on the interface, and generates a tool discrepancy report.

[0129] The transformer internal inspection management method provided in this embodiment formulates a treatment plan based on the results of the transformer internal inspection fault, and can tailor corresponding treatment measures according to different types of faults (such as core heating, carbonization of insulation parts, broken leads, etc.). Avoid adopting a "one-size-fits-all" treatment approach, ensure that each fault can get the most suitable solution, accurately solve the problem from the root, and improve the accuracy and effectiveness of fault handling. The transformer internal inspection management method uses electronic monitoring and scanning means to check for foreign objects on the bottom of the transformer box, internal components, operators and fault handling operations, and can comprehensively check for metal and non-metallic foreign objects. Avoid foreign objects being left inside the transformer during the internal inspection process, prevent foreign objects from entering the high field strength area with the oil flow during operation, causing serious accidents such as insulation breakdown and discharge, and eliminate equipment damage and safety risks caused by foreign objects from the source. Through the monitoring cameras worn by operators and arranged on site, the entire process of transformer internal inspection is recorded and videotaped, realizing real-time supervision of various links such as environmental monitoring, safety inspection, and tool management. If safety or quality issues arise, the operation process can be quickly traced through video recording, clarifying responsibility. This also provides intuitive and detailed information for subsequent problem analysis and improvement work, ensuring that internal inspections strictly adhere to standardized procedures. After the internal inspection is completed, the consistency of tools before and after the operation can be compared to promptly identify any damaged, lost, or missing tools. This prevents tools from being left inside the transformer and causing malfunctions, while also ensuring the integrity of the tools required for internal inspections, facilitating subsequent work.

[0130] As one or more specific application embodiments of the present invention, combined with Figure 4 The transformer internal inspection management method provided by the present invention is further described in detail, specifically including:

[0131] Step S1, environmental detection: weather information is collected through the wireless Internet, the on-site environmental temperature and relative humidity are detected through temperature and humidity sensors, the oil filter and oil tank used for internal inspection are sampled for online oil particle size analysis, and the insulation resistance of the transformer before internal inspection is detected through an insulation resistance tester. The detection data is transmitted from the information sensor to the environmental detection module of the controller through the Internet of Things technology, and the system determines whether the environment meets the internal inspection requirements: (1) no rain, snow, or fog on that day; (2) the ambient temperature is ≤40℃, the relative humidity is ≤75%; (3) the total number of particles larger than 5μm and below NAS2 in the oil is ≤1000 / 100ml; (4) the insulation resistance is ≥10000MΩ. If the environmental parameters do not meet the internal inspection requirements, an immediate warning will be issued, which can avoid the internal insulation of the transformer being contaminated and damaged during the internal inspection due to external factors such as bad weather, excessive environmental humidity, contamination of the oil tank and oil filter, and abnormal insulation resistance.

[0132] Step S2, safety condition check, checks the mental state of the operator, the operator's safety and labor protection equipment (such as long-sleeved overalls, safety helmets, lighting, walkie-talkies, etc.), the transformer internal inspection path and other safety items one by one through the human-computer interactive control screen, detects the oxygen content inside the transformer through the oxygen meter, and detects the internal illumination of the transformer through the illumination sensor. These data are transmitted to the safety condition check module in the controller through the Internet of Things technology by the information sensor, and the system determines whether the safety conditions meet the internal inspection requirements: (1) The operator is sober and has not been drinking, is not in a trance or other abnormal state; (2) All required safety and labor protection equipment have been worn correctly; (3) The internal inspection path of the transformer is unobstructed and personnel can pass normally; (4) The oxygen content inside the transformer is ≥18%; (5) The internal illumination is ≥50lx. If abnormal conditions such as low oxygen content and insufficient lighting are detected, the module will issue a warning in time to ensure the personal safety of the operator during the transformer internal inspection.

[0133] Step S3, tool inspection: Images of the tools brought in for internal inspection are recorded one by one through the human-computer interaction control screen, and the appearance, binding and other status of the tools are registered through machine vision technology. After the internal inspection is completed, the tools need to be inspected and confirmed again through machine vision technology to ensure that the number and status of tools before and after the internal inspection are consistent. If the tools are damaged, lost or missed, the difference before and after can be discovered in time through visual technology, and the tool inspection module of the controller will immediately issue a warning.

[0134] Step S4, oil draining and oil filling monitoring: By monitoring the process parameters of the transformer oil draining and oil filling stages, monitoring the valve opening and closing status by installing a relay, monitoring the transformer oil filling and discharge speed by installing a flow meter at the end of the oil filling and discharge pipe, monitoring the oil temperature at the oil filter outlet by a temperature sensor, and monitoring the vacuum degree of the transformer and vacuum unit by a vacuum gauge, etc. These data are transmitted to the oil draining and oil filling supervision module of the controller by the information sensor through the Internet of Things technology, and the system determines whether the process parameters meet the internal inspection requirements: (1) oil draining speed ≥ 5t / h; (2) oil temperature at the oil filter outlet ≥ 60℃; (3) vacuum degree ≤ 13Pa. If the process parameters do not meet the internal inspection requirements, a warning will be issued in time to avoid the problem of moisture in the transformer's internal insulation parts and reduced insulation strength due to failure to meet the oil draining and oil filling process requirements.

[0135] Step S5, fault detection and processing: Various defects found inside the transformer during the internal inspection process, including core heating, carbonization of insulation parts, loose fasteners, broken leads, coil inversion and other abnormalities and defects, are photographed and registered through the human-computer interaction control screen. This data is transmitted to the fault detection and processing module of the controller by information sensors through the Internet of Things technology, and the processing plan is checked in real time or timely communication is carried out with external professionals to quickly formulate targeted fault processing plans and supervise the processing process to ensure the processing effect.

[0136] Step S6, foreign body control: Through electronic monitoring and scanning, etc., metal and non-metal foreign bodies in the transformer box bottom, transformer body, iron core, magnetic shield, outgoing line device, internal inspection personnel, and fault handling operations are thoroughly inspected and warned, and the foreign body cleaning status is recorded to prevent foreign bodies found and left behind during the internal inspection from remaining inside the transformer. During operation, foreign bodies are carried by oil flow to high-field strength areas, causing insulation breakdown and discharge, resulting in damage to personnel and equipment.

[0137] Step S7, video and audio monitoring and tracing: Using wearable surveillance cameras and 360-degree surveillance cameras deployed at the internal inspection site, the entire process before, during, and after the transformer internal inspection is recorded. This data is transmitted by information sensors to the controller's video and audio monitoring and tracing module via IoT technology. This allows for full control of all aspects involved in steps S1 through S6, including environmental testing, personnel safety, troubleshooting, and foreign object control. This ensures that every person, parameter, tool, and operation is video and audio recorded and traceable. Any anomalies in safety or quality links are automatically alerted, and closed-loop procedures are not permitted until qualified procedures are met. The traceability process after the transformer internal inspection is completed can effectively improve the quality of the transformer internal inspection, avoid transformer short-circuit failures caused by improper operation, the presence of foreign objects, and other misoperations, and prevent serious equipment damage accidents such as explosions and fires.

[0138] The transformer internal inspection management method provided in this embodiment includes S1, environmental testing; S2, safety condition inspection; S3, tool inspection; S4, oil drainage and oil filling supervision; S5, fault detection and handling; S6, foreign matter control module; S7, audio and video monitoring and tracing. Among them, the "Oil-immersed Transformer Internal Inspection Management System" model was first created, which implements procedural and modular management of oil-immersed transformer internal inspections, and formulates targeted strategies for oil-immersed transformer internal inspection personnel safety, environmental testing, foreign matter control, and fault handling. This improves the success rate of oil-immersed transformer internal inspection fault detection and handling, effectively reduces the adverse effects of oil-immersed transformer internal inspections on the transformer's internal insulation level, and avoids potential damage to personnel and equipment caused by the environment, foreign matter, and operational errors during on-site internal inspections.

[0139] In this embodiment, a transformer internal inspection management system is also provided, which includes: a first inspection device, an information sensor, a second inspection device, a human-computer interaction control screen and a controller; the first inspection device is used to perform environmental detection and safety condition inspection on the transformer internal inspection work in sequence, and the human-computer interaction control screen is used to inspect tools, and the parameters of the first inspection device and the parameters of the human-computer interaction control screen are transmitted to the controller through the information sensor using the Internet of Things technology, and the controller determines whether the environment, safety conditions and tools meet the internal inspection requirements; the second inspection device is used to monitor the oil drainage and oil filling of the transformer and inspect the internal components of the transformer in sequence when the internal inspection requirements are met, and determine whether the oil drainage and oil filling and the internal components of the transformer meet the internal inspection requirements, and transmit the parameters of the second inspection device to the controller through the information sensor using the Internet of Things technology, and the controller analyzes and obtains the transformer internal inspection results; the controller is also used to formulate a fault handling plan based on the transformer internal inspection results, and handle the internal fault of the transformer based on the fault handling plan.

[0140] The first inspection components include temperature and humidity sensors, an insulation resistance tester, an oxygen detector, and an illumination sensor. The second inspection components include a flow meter, a temperature sensor, and a vacuum gauge. The controller includes an environmental monitoring module, a safety condition inspection module, a tool inspection module, an oil drain and oil filling monitoring module, a fault detection and handling module, a foreign object control module, and an audio and video monitoring and tracing module.

[0141] The further functional description of each of the above modules is the same as that of the above corresponding embodiments and will not be repeated here.

[0142] This embodiment also provides a transformer internal inspection management device for implementing the aforementioned embodiments and preferred implementations. Details already described will not be repeated. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. While the devices described in the following embodiments are preferably implemented using software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0143] This embodiment provides a transformer internal inspection management device, such as Figure 5 As shown, including:

[0144] The pre-inspection inspection module 501 is used to sequentially inspect the environment, safety conditions, and tools of the transformer internal inspection work, and determine whether the environment, safety conditions, and tools meet the internal inspection requirements;

[0145] Internal inspection module 502 is used to monitor the oil draining and filling of the transformer and inspect the internal components of the transformer in sequence when the internal inspection requirements are met, and determine whether the oil draining and filling and the internal components of the transformer meet the internal inspection requirements, and obtain the transformer internal inspection results;

[0146] The internal inspection post-processing module 503 is used to formulate a fault handling plan based on the transformer internal inspection result, and handle the transformer internal fault based on the fault handling plan.

[0147] In some optional embodiments, the pre-internal inspection module 501 includes:

[0148] The environmental detection unit is used to detect the environmental parameters of the transformer internal inspection site and determine whether the on-site environmental parameters meet the internal inspection requirements.

[0149] The safety condition inspection unit is used to inspect the safety conditions of the personnel performing internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements.

[0150] The tool inspection unit is used to inspect the appearance and binding status of tools brought in for internal inspection of transformers and record them.

[0151] In some optional embodiments, the environmental parameters include on-site weather parameters, temperature and humidity parameters, particle size in the oil used for internal inspection, and insulation resistance; the environmental detection unit includes:

[0152] The environmental parameter detection subunit is used to detect the weather parameters at the transformer internal inspection work site through wireless Internet technology, detect the temperature and humidity parameters at the transformer internal inspection work site through temperature and humidity sensors, perform online oil particle size detection on the oil filter and oil tank samples used for internal inspection, and detect the insulation resistance of the transformer before internal inspection through an insulation resistance tester.

[0153] The first judgment subunit is used to determine that the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the internal inspection requirements when the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the corresponding first preset conditions; otherwise, they do not meet the internal inspection requirements.

[0154] In some optional embodiments, the safety conditions include the mental state of the operator, the wearing of safety labor protection equipment, the transformer internal inspection path, the oxygen content inside the transformer, and the lighting inside the transformer; the safety condition inspection unit includes:

[0155] The safety condition inspection subunit is used to check the mental state of the transformer internal inspection workers, the safety and labor protection equipment they wear, and the transformer internal inspection path through the human-computer interaction control screen, check the oxygen content inside the transformer through the oxygen meter, and detect the internal illumination of the transformer through the illumination sensor.

[0156] The second judgment subunit is used to determine that the operator's mental state, the safety and labor protection equipment worn, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the internal inspection requirements when the operator's mental state, the safety and labor protection equipment worn, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the corresponding second preset conditions; otherwise, they do not meet the internal inspection requirements.

[0157] In some optional embodiments, the oil draining and filling monitoring includes the oil filling and draining speed of the transformer, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and the vacuum unit; the internal components of the transformer include the iron core, insulation, fasteners, leads and coils;

[0158] In some optional embodiments, the internal inspection module 502 includes:

[0159] The oil drainage and oil filling monitoring unit is used to monitor the oil filling and discharge speed of the transformer by installing a flow meter at the end of the transformer oil filling and discharge pipe, monitor the oil temperature at the oil filter outlet through a temperature sensor, and monitor the vacuum degree of the transformer and the vacuum unit through a vacuum gauge. When the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet monitored by the temperature sensor, and the vacuum degree of the transformer and the vacuum unit monitored by the vacuum gauge meet the third preset condition, it is determined that the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet monitored by the temperature sensor, and the vacuum degree of the transformer and the vacuum unit monitored by the vacuum gauge meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

[0160] The fault detection and processing unit is used to inspect the iron core, insulation parts, fasteners, leads and coils of the internal components of the transformer, and obtain one or more of the following: iron core heating, insulation carbonization, lead wire breakage, and coil collapse, and obtain the transformer internal inspection results. The transformer internal inspection results include transformer internal inspection fault results and transformer internal inspection qualified results.

[0161] In some optional implementations, the internal inspection post-processing module 503 includes:

[0162] The fault handling plan formulation and fault handling unit are used to formulate corresponding fault handling plans based on the transformer internal fault inspection results, and handle the transformer internal faults based on the fault handling plans.

[0163] In some optional implementations, the transformer internal inspection management device further includes:

[0164] The foreign object control module uses electronic monitoring and scanning to inspect the transformer bottom, internal components, operators, and troubleshooting equipment for foreign objects, and removes any foreign objects found. This module is identical to the foreign object control module in the controller of the transformer internal inspection management system.

[0165] The audio and video monitoring and tracing module uses operator-worn surveillance cameras and on-site surveillance cameras to record the entire transformer internal inspection process, including environmental monitoring, safety checks, tool inspections, oil draining and filling monitoring, internal component inspections, and fault handling. This allows for monitoring and tracing of the transformer internal inspection process. This module is consistent with the audio and video monitoring and tracing module in the controller of the transformer internal inspection management system.

[0166] The tool inspection module is used to compare the operator's tools after the transformer internal inspection is completed with the tools used at the beginning of the inspection to ensure they are consistent. This module is consistent with the tool inspection module of the controller in the transformer internal inspection management system.

[0167] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0168] The transformer internal inspection management device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0169] The embodiment of the present invention also provides a computer device having the above Figure 5 The transformer internal inspection management device shown.

[0170] See also Figure 6 , Figure 6 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 6 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 A processor 10 is taken as an example.

[0171] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0172] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0173] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0174] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0175] The computer device further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 6 The bus connection is taken as an example.

[0176] The input device 30 can receive input digital or character information and generate key signal input related to user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touch pad, an indicator stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), and a tactile feedback device (e.g., a vibration motor). The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display, and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0177] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0178] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0179] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A transformer internal inspection management method, characterized in that: The method comprises: Conduct environmental testing, safety condition inspection and tool inspection for transformer internal inspection work in sequence, and determine whether the environment, safety conditions and tools meet the internal inspection requirements; When the internal inspection requirements are met, the transformer is sequentially inspected for oil draining and oil filling, as well as internal components. It is determined whether the oil draining and oil filling, as well as internal components of the transformer meet the internal inspection requirements, and the transformer internal inspection results are obtained. A fault handling plan is formulated based on the transformer internal inspection result, and the internal fault of the transformer is handled based on the fault handling plan.

2. The method according to claim 1, characterized in that Conduct environmental testing, safety condition inspection, and tool inspection for transformer internal inspection work in sequence, and determine whether the environment, safety conditions, and tools meet the internal inspection requirements, including: Test the environmental parameters of the transformer internal inspection site and determine whether the environmental parameters meet the internal inspection requirements; Check the safety conditions of the personnel performing internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements; Check the appearance and binding status of tools brought in for internal inspection of transformers and record them in the register.

3. The method according to claim 2, characterized in that The environmental parameters include on-site weather parameters, temperature and humidity parameters, particle size in the online oil used for internal inspection, and insulation resistance; The on-site environmental parameters of the transformer internal inspection are detected, and whether the on-site environmental parameters meet the internal inspection requirements are determined, including: The weather parameters at the transformer internal inspection site are detected through wireless Internet technology, the temperature and humidity parameters at the transformer internal inspection site are detected through temperature and humidity sensors, the oil filter and oil tank samples used for internal inspection are sampled for online oil particle size detection, and the insulation resistance of the transformer before internal inspection is detected through an insulation resistance tester; When the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the corresponding first preset conditions, it is determined that the weather parameters, temperature and humidity parameters, oil particle size and insulation resistance meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

4. The method according to claim 2, characterized in that The safety conditions include the mental state of the operators, the wearing of safety labor protection equipment, the internal inspection path of the transformer, the oxygen content inside the transformer and the lighting level inside the transformer; Check the safety conditions of the personnel performing internal inspection of the transformer and determine whether the safety conditions meet the internal inspection requirements, including: The human-computer interaction control screen is used to check the mental state of the transformer internal inspection workers, the safety and labor protection equipment they wear, and the transformer internal inspection path; the oxygen content inside the transformer is checked through an oxygen meter; and the illumination level inside the transformer is detected through an illumination sensor; When the operator's mental state, the wearing of safety and labor protection supplies, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the corresponding second preset conditions, it is determined that the operator's mental state, the wearing of safety and labor protection supplies, the transformer internal inspection path, the oxygen content inside the transformer, and the internal illumination of the transformer meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements.

5. The method according to claim 1, wherein The oil draining and filling monitoring includes the oil filling and draining speed of the transformer, the oil temperature at the oil filter outlet, and the vacuum degree of the transformer and vacuum unit; the internal components of the transformer include the iron core, insulation parts, fasteners, leads and coils; The oil draining and oil filling monitoring and transformer internal component inspection are sequentially performed to obtain transformer internal defect results, and it is determined whether the oil draining and oil filling and transformer internal components meet the internal inspection requirements to obtain the transformer internal inspection results, including: By installing a flow meter at the end of the transformer oil filling and discharge pipe to monitor the transformer oil filling and discharge speed, monitoring the oil temperature at the oil filter outlet through a temperature sensor, and monitoring the vacuum degree of the transformer and the vacuum unit through a vacuum gauge, when the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet through the temperature sensor, and the vacuum degree of the transformer and the vacuum unit through the vacuum gauge meet the third preset condition, it is determined that the transformer oil filling and discharge speed, the oil temperature at the oil filter outlet through the temperature sensor, and the vacuum degree of the transformer and the vacuum unit through the vacuum gauge meet the internal inspection requirements; otherwise, they do not meet the internal inspection requirements; The iron core, insulation parts, fasteners, leads and coils of the internal components of the transformer are inspected to obtain one or more of the following: iron core heating, insulation carbonization, lead wire breakage, and coil collapse, and the transformer internal inspection results are obtained. The transformer internal inspection results include transformer internal inspection failure results and transformer internal inspection qualified results.

6. The method according to claim 5, characterized in that Formulating a fault handling plan based on the transformer internal inspection result, and handling the transformer internal fault based on the fault handling plan, includes: A corresponding fault handling plan is formulated based on the transformer internal fault detection result, and the transformer internal fault is handled based on the fault handling plan.

7. The method according to claim 1, characterized in that The method further comprises: Use electronic monitoring and scanning methods to check for foreign objects on the bottom of the transformer box, internal components of the transformer, operators and fault handling operations, and clean up any foreign objects found; The entire process of transformer internal inspection, including environmental monitoring, safety condition inspection, tool inspection, oil draining and filling monitoring, transformer internal component inspection, and fault handling, is recorded using surveillance cameras worn by operators and deployed at the internal inspection site to monitor and trace the transformer internal inspection work. After the internal inspection of the transformer is completed, compare the tools used by the operator with those used at the beginning of the internal inspection to see if they are consistent.

8. A transformer internal inspection management system, characterized in that: The system includes: a first inspection device, an information sensor, a second inspection device, a human-computer interaction control screen and a controller; The first inspection device is used to sequentially perform environmental testing and safety condition checks on the transformer internal inspection work. The human-machine interactive control screen is used to check tools. The parameters of the first inspection device and the human-machine interactive control screen are transmitted to the controller through information sensors using the Internet of Things technology. The controller then determines whether the environment, safety conditions, and tools meet the internal inspection requirements. The second inspection device is used to monitor the oil drainage and oil filling of the transformer and inspect the internal components of the transformer in sequence when the internal inspection requirements are met, and to determine whether the oil drainage and oil filling and the internal components of the transformer meet the internal inspection requirements. The parameters of the second inspection device are transmitted to the controller through the information sensor using the Internet of Things technology, and the controller is analyzed to obtain the transformer internal inspection results; The controller is further configured to formulate a fault handling plan based on the transformer internal inspection result, and handle the transformer internal fault based on the fault handling plan.

9. A transformer internal inspection management device, characterized in that: The device comprises: The pre-inspection inspection module is used to perform environmental inspection, safety condition inspection and tool inspection on the transformer internal inspection work in sequence, and determine whether the environment, safety conditions and tools meet the internal inspection requirements; The internal inspection module is used to monitor the oil draining and filling of the transformer and inspect the internal components of the transformer in turn when the internal inspection requirements are met, and to determine whether the oil draining and filling and the internal components of the transformer meet the internal inspection requirements, and obtain the transformer internal inspection results; The internal inspection post-processing module is used to formulate a fault processing plan based on the transformer internal inspection result and process the internal fault of the transformer based on the fault processing plan.

10. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the transformer internal inspection management method according to any one of claims 1 to 7 by executing the computer instructions.

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