Mechanical probe type contact detection method for electrical preventive test of transformer

Abstract

The invention provides a mechanical probe type contact detection method for an electrical preventive test of a transformer, and the method comprises the steps: placing the transformer at a preset position, carrying out the stage electrification of the transformer, carrying out the detection of a housing of the transformer through a mechanical probe, carrying out the power-off when the electrification time reaches a preset duration, carrying out the re-pressurization, and carrying out the electrification, and repeating the above steps. The power-on voltage reaches the maximum voltage; if it is judged that the transformer shell does not have the electric leakage phenomenon, low-voltage current is introduced, and a mechanical probe is used for detecting different positions of the transformer; if the detection is normal, the transformer is moved to a preset position in the protection chamber, the fixed position of the transformer is connected and contacted with the probe of the mechanical probe, and current with rated voltage is introduced to detect different positions of the transformer; and if the detection is normal, introducing the maximum voltage to detect different positions of the transformer. According to the invention, omnibearing detection of the transformer can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power plant installation, in particular to a mechanical probe type contact detection method for electrical preventive test of a transformer. BACKGROUND

[0002] When the transformer is in use, electrical preventive test needs to be performed on the transformer, so as to understand the insulation condition of the transformer and avoid leakage and other phenomena of the transformer in use, thereby improving the safety of the transformer in use. The mechanical probe type contact detection method is one of the detection methods. However, the general mechanical probe type contact detection method has some shortcomings in detection, such as: when low-voltage current is passed into the transformer, the voltage is different from that when the transformer is in use. Therefore, although the safety of detection can be ensured at this time, the detection data will be inaccurate, and the insulation condition of the transformer under normal voltage cannot be judged. When normal voltage is used for detection, the safety of the mechanical probe type contact detection method is poor, and thus it is not conducive to the detection of the transformer. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, a first object of the present application is to provide a mechanical probe type contact detection method for electrical preventive test of a transformer.

[0005] A second object of the present application is to provide an electronic device.

[0006] A third object of the present application is to provide a computer readable storage medium.

[0007] A fourth object of the present application is to provide a computer program product.

[0008] To achieve the above-mentioned objects, a mechanical probe type contact detection method for electrical preventive test of a transformer is provided according to a first aspect of the present application, comprising:

[0009] The transformer is placed at a predetermined position, the transformer is powered in stages, a mechanical probe is used to detect the shell of the transformer, the power is turned off and the voltage is increased again when the power time reaches a preset time, and the power is turned on repeatedly until the power voltage reaches a second detection voltage, and the second detection voltage is the maximum voltage of the transformer;

[0010] If it is judged that the transformer shell does not appear leakage phenomenon, a first detection voltage is passed in, and a mechanical probe is used to detect different positions of the transformer, and the first detection voltage is a low-voltage current;

[0011] If the detection is normal, the transformer is moved to a predetermined position in the protection room, the fixed position of the transformer is connected with the probe of the mechanical probe, and the current of the rated voltage is input to detect different positions of the transformer.

[0012] If the detection is normal, the second detection voltage is input to detect different positions of the transformer.

[0013] Optionally, the transformer is placed in a predetermined position, the transformer is powered in stages, the shell of the transformer is detected by using a mechanical probe, the power is turned off and the voltage is increased again when the power time reaches a preset length, and the process is repeated until the power voltage reaches a second detection voltage, the second detection voltage being the maximum voltage of the transformer, comprising:

[0014] The transformer is placed in a predetermined position, a first detection voltage is input, the power time is a first preset length, and the shell of the transformer is preliminarily detected by using a mechanical probe to determine whether the transformer has a leakage phenomenon.

[0015] When the power time reaches the first preset length, the power is turned off, and the power-off time is a second preset length.

[0016] When the power-off time reaches the second preset length, the voltage of the input current is increased by 100V, and the detection, power-off, and voltage-increase power-on are repeated until the input current voltage is increased to the second detection voltage.

[0017] Optionally, if it is determined that the shell of the transformer does not have a leakage phenomenon, a first detection voltage is input, and a mechanical probe is used to detect different positions of the transformer, the first detection voltage being a low-voltage current, comprising:

[0018] After the first detection voltage is input, a hand-held mechanical probe is used by a detection personnel to detect the shell, the wiring terminal and other key parts of the transformer; the first detection voltage is 380V, the mechanical probe detects the insulation of the transformer layer by layer to ensure the electrical stability of each part of the transformer under low voltage, and the detection personnel wears an insulating garment and operates within a specified safety range during the detection process.

[0019] Optionally, the detection personnel are in a group of two, one of whom holds the mechanical probe for detection and has an insulating rope around his waist, and the other is more than 5M away from the transformer as an observer.

[0020] Optionally, if the detection is normal, the transformer is moved to a predetermined position in the protection chamber, the fixed position of the transformer is connected with the probe of the mechanical probe, and the current of the rated voltage is passed to detect different positions of the transformer, including:

[0021] The transformer is arranged at a predetermined detection position in the protection chamber, and the transformer is fixed and stable to avoid movement during detection;

[0022] The probe of the mechanical probe is connected with the fixed position of the transformer, and the current of the rated voltage is passed to detect the insulation performance of each part of the transformer after the detection personnel leave the protection chamber and reach a safe position;

[0023] The shell, terminal and other key electrical parts of the transformer are checked layer by layer under the rated voltage to ensure that they can work normally under the rated voltage without abnormal leakage or failure;

[0024] The protection chamber is provided with a camera, and the detection personnel observes the transformer through the camera.

[0025] To achieve the above purpose, the second aspect of the embodiment of the application provides an electronic device, which comprises a processor and a memory connected with the processor in communication;

[0026] The memory stores computer execution instructions;

[0027] The processor executes the computer execution instructions stored in the memory to realize the method according to any one of the first aspect.

[0028] To achieve the above purpose, the third aspect of the embodiment of the application provides a computer readable storage medium, which stores computer execution instructions, and the computer execution instructions are executed by a processor to realize the method according to any one of the first aspect.

[0029] To achieve the above purpose, the fourth aspect of the embodiment of the application provides a computer program product, which is executed by a processor to realize the method according to any one of the first aspect.

[0030] The technical scheme provided by the embodiment of the application at least brings the following beneficial effects:

[0031] The transformer shell is usually the first line of defense for electrical insulation, and leakage may mean that the shell insulation has failed, with current leaking to the outside, posing a potential electrical safety hazard. Therefore, it is crucial to detect the insulation of the shell. Performing this detection at low voltage ensures that the transformer shell does not have dangerous current leakage when energized, effectively ensuring the safety of the detection personnel.

[0032] With the handheld probe, the detection personnel can flexibly conduct detailed detection of various positions of the transformer, including the wiring terminals, grounding system, core part, and other potential electrical connection points. The use of handheld probes allows the detection personnel to flexibly handle the detection tasks of various parts of the transformer, ensuring that every critical point of the transformer is covered, avoiding omissions, and comprehensively evaluating its insulation. Performing these detections at different voltages allows the transformer insulation performance to be judged at multiple voltage levels to ensure stable operation under normal working conditions.

[0033] During the process of connecting the probe to the fixed position of the transformer, the detection personnel can simulate the working state of the transformer in normal operation, ensuring that the insulation of the transformer does not have problems under rated voltage and maximum voltage due to long-term use or external power impact. This step can accurately reflect the working state of the transformer in actual use, further verifying its safety and reliability. Detecting at high voltage can most closely simulate the working environment of the transformer and detect whether the transformer will have insulation failure due to excessive voltage, thereby ensuring the stability of the transformer during use.

[0034] In summary, these three detection measures complement each other and work together to ensure the insulation and safety of the transformer. Through comprehensive detection, the transformer failure can be minimized, ensuring the long-term stable operation of the equipment and avoiding possible electrical accidents and equipment damage.

[0035] Additional aspects and advantages of the application will be made apparent by the following description and the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the following description, including the appended claims, taken in conjunction with the accompanying drawings.

[0037] Figure 1 A flowchart of a mechanical probe type contact detection method for transformer electrical preventive test provided by an embodiment of the application;

[0038] Figure 2A flowchart of a mechanical probe type contact detection method for a transformer electrical preventive test provided by an embodiment of the present application. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0040] To solve the technical problems existing in the prior art, the embodiment of the present application provides a mechanical probe type contact detection method for a transformer electrical preventive test, Figure 1 and Figure 2 A flowchart of a mechanical probe type contact detection method for a transformer electrical preventive test provided by an embodiment of the present application. As shown in Figure 1 the method comprises the following steps:

[0041] Step 101, placing the transformer at a predetermined position, performing step-by-step energization on the transformer, and detecting the shell of the transformer by using a mechanical probe, and every time the energization time reaches the preset time length, the power is turned off and the voltage is increased after the power is turned on, and the process is repeated until the energization voltage reaches the second detection voltage, and the second detection voltage is the maximum voltage of the transformer.

[0042] In this embodiment, the transformer is first placed at a predetermined detection position to ensure that the transformer is stable and will not be displaced during the detection process. Next, the transformer is energized step by step, and a mechanical probe is used to preliminarily detect the shell of the transformer to determine whether there is a leakage phenomenon.

[0043] In this step, first, a first detection voltage, for example, a low-voltage current of 380V, is input, and the energization time is 90 seconds (i.e., the preset energization time). During the 90 seconds of energization, a mechanical probe is used to detect the insulation performance of the transformer shell. If the transformer shell does not have a leakage phenomenon, the next step can be continued. When the energization time reaches the preset 90 seconds, the power is turned off, and the power-off time is 30 seconds (i.e., the preset power-off time). This power-off operation can effectively disconnect the transformer from the power supply, ensure that the current and voltage recovery is controllable, and help protect the equipment and detection personnel. At this time, the detection personnel ensure that the connection between the transformer and the power supply is safely cut off, and wait for 30 seconds to reduce the energy of the electrical system.

[0044] After the power-off time reaches 30 seconds, the next step is to increase the voltage. After each power-off, the voltage is increased by 100 V, and the mechanical probe is used again to detect the transformer shell to ensure that there is no leakage phenomenon. For example, after the 380 V voltage is applied, the power is turned off and waited for 30 seconds, and then the voltage is increased to 480 V, and the 90-second power-on detection is performed again. If the detection is normal, continue to power off and increase the voltage, and repeat until the voltage reaches the maximum voltage of the transformer (for example, 1000 V), which is the second detection voltage.

[0045] During the detection process, as the voltage gradually increases, the power-on time remains 90 seconds each time, and the power-off time is 30 seconds. Through this phased power supply method, the insulation of the transformer at each voltage stage can be fully detected, and its working state can be monitored in real time. Since each increase in voltage is followed by a 30-second power-off time, the detection personnel have enough time to ensure the safety of the operation.

[0046] In the detection process of the embodiments of the present application, the phased power-on and power-off method effectively avoids the risk of detection personnel being exposed to high voltage. Each time the voltage is increased, the power is turned off and waited for a period of time, which not only ensures the performance of the transformer under gradually increasing voltage, but also avoids the detection personnel being exposed to current and voltage for a long time during the entire process, significantly reducing the risk of electric shock. This phased power supply not only ensures the safety of the detection personnel, but also avoids overheating or damage to the equipment caused by long-term exposure to high voltage, making the detection process safer and more reliable.

[0047] Through this series of operations, the insulation performance of the transformer under different voltage conditions is fully detected, ensuring that it will not have a leakage phenomenon or other electrical safety problems during normal operation.

[0048] Step 102, if it is determined that the transformer shell does not have a leakage phenomenon, a first detection voltage is applied, and a mechanical probe is used to detect different positions of the transformer, and the first detection voltage is a low voltage current.

[0049] In the embodiments of the present application, if it is determined in step 101 that the transformer shell does not have a leakage phenomenon, the next step is to enter the detection stage of the first detection voltage. In this stage, the first detection voltage of 380 V low voltage current is applied. At this time, a mechanical probe is used to detect different parts of the transformer to ensure the electrical stability of each part of the transformer under low voltage conditions.

[0050] After the 380V voltage is applied, the inspector holds the mechanical probe to detect the transformer's shell, terminal, and other key electrical parts. Specifically, first, the inspector will start from the transformer's shell, as the shell is the first protective barrier of the transformer, which can effectively determine whether there is a leakage phenomenon. Next, the mechanical probe will gradually penetrate to detect the internal components of the transformer, including the terminal, cable connection point, and other internal insulation systems, to ensure that the insulation performance of each layer meets the electrical safety standards.

[0051] It is important to note that during the detection process, the mechanical probe strictly follows the following order when detecting the insulation of each part of the transformer:

[0052] (1) First, detect the transformer's shell to check its external insulation and determine whether there is a leakage phenomenon;

[0053] (2) Then, detect the insulation structure inside the transformer layer by layer, from the terminal to other key parts, to ensure that the insulation of each part of the transformer meets the specified electrical stability requirements under 380V low voltage.

[0054] To ensure the safety of the inspector, the inspector must wear an insulating suit during the entire detection process and operate within the specified safety range. The inspector needs to avoid direct contact with the transformer to prevent any electrical safety accidents. This effectively ensures the safety of the detection process and avoids electric shock and other accidents.

[0055] In addition, during the implementation process, the detection team consists of two people. One person is the inspector who holds the mechanical probe to detect each part of the transformer. The waist of this inspector should be wrapped with an insulating rope to ensure that he can quickly escape from the dangerous area in case of an emergency. The other person is the observer, whose main responsibility is to maintain a safe distance of at least 5 meters from the transformer and observe the state of the transformer at any time during the process to ensure the safety of the inspector and report any abnormal conditions in a timely manner.

[0056] In this way, not only can each key part of the transformer be carefully inspected for insulation, but the transformer's insulation can also be detected in all directions, ensuring the safety of the entire detection process and avoiding potential electric shock risks to personnel caused by high voltage. In addition, the division of labor among team members further improves detection efficiency and safety, ensuring the safe operation of the transformer.

[0057] Step 103, if the detection is normal, move the transformer to the predetermined position in the protection room, connect the fixed position of the transformer with the probe of the mechanical probe, and apply the rated voltage current to detect different positions of the transformer.

[0058] If the test result is normal in step 102, the transformer is then moved to a predetermined test position in the protection room. Ensure that the transformer is fixed and stably placed in the protection room to avoid any displacement or shaking during the test process, which may affect the test results.

[0059] In the embodiment of the present application, after the transformer is properly positioned and ensured to be stable, a mechanical probe is used to connect the probe to a fixed position on the transformer. This operation ensures that the mechanical probe maintains stable contact with the relevant parts of the transformer throughout the testing process, accurately testing the insulation performance of the transformer during normal use.

[0060] After ensuring they are in a safe location and have left the protective chamber, the inspector remotely observes the transformer via a camera, avoiding direct contact with the transformer. During this process, the inspector monitors the transformer's status in real time via the camera inside the protective chamber, ensuring each step of the inspection is carried out effectively while also ensuring the safety of the operator.

[0061] Next, the transformer is further tested by applying a current at the rated voltage. The rated voltage is typically the transformer's normal operating voltage, such as 380V or 660V. Mechanical probes are used to inspect the transformer's housing, terminals, and other key electrical components to ensure that the transformer's insulation performance meets standards at the rated voltage and that it is functioning properly without leakage or electrical faults.

[0062] Under the rated voltage, the embodiment of the present application again performs insulation inspection on the transformer layer by layer to ensure the insulation of the casing and check whether there is leakage; as well as the insulation performance of the terminal, to ensure that no electrical fault occurs at the terminal under the rated voltage; and other key electrical parts are inspected to ensure that these components can work stably under the rated voltage and meet safety standards.

[0063] In this embodiment, the transformer is placed in a protective chamber equipped with a camera system, allowing inspectors to observe the transformer remotely from a safe location, avoiding direct contact with high-voltage equipment. This setup significantly enhances safety during the inspection process, ensuring effective testing of the transformer's performance while protecting inspectors from electrical hazards.

[0064] The present embodiment utilizes a mechanical probe connected to a fixed position on the transformer to accurately assess the insulation performance of the transformer during normal use. This process allows inspectors to fully understand the working status of the transformer and ensure that it is free of electrical hazards under normal operating conditions.

[0065] Step 104: If the detection is normal, a second detection voltage is applied to detect different positions of the transformer.

[0066] After confirming the insulation performance of each part of the transformer in step 103, the next step is to test the second detection voltage. At this time, the transformer has passed the detection of low voltage (first detection voltage) and rated voltage, ensuring that it has no leakage phenomenon and stable electrical performance under these voltage conditions. The second detection voltage is usually the maximum voltage of the transformer, that is, the highest working voltage that the transformer may encounter in actual use.

[0067] The specific operation process is consistent with step 103, and the present application does not repeat the description.

[0068] It should be emphasized that the process of passing the second detection voltage is very critical, as it can simulate the performance of the transformer under extreme working conditions, ensuring that the transformer not only maintains good electrical performance under normal working voltage, but also continues to run without failure under higher working voltage. This link plays a decisive role in ensuring the safety, stability and long-term reliability of the transformer.

[0069] Through the above steps, the insulation of the transformer under the maximum voltage condition is fully verified, ensuring its electrical stability and safety in actual use. This detection link effectively avoids potential electrical accidents and ensures the long-term safe operation of the equipment.

[0070] In order to realize the above-mentioned embodiment, the present application also provides an electronic device, comprising: a processor, and a memory in communication connection with the processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to realize the method provided by the foregoing embodiment.

[0071] In order to realize the above-mentioned embodiment, the present application also provides a computer readable storage medium, the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to realize the method provided by the foregoing embodiment.

[0072] In order to realize the above-mentioned embodiment, the present application also provides a computer program product, comprising a computer program, which is executed by the processor to realize the method provided by the foregoing embodiment.

[0073] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in the present application comply with relevant laws and regulations, and do not violate public order and good customs.

[0074] It is important to note that user's personal information shall be collected for legitimate and reasonable uses of the service and not shared or sold outside of those legitimate uses. Further, such collection / sharing shall occur after receiving the consent of the users, including but not limited to informing the users to read the user agreement / user notice before using the function, and signing the agreement / authorization including authorization of relevant user information. In addition, any necessary steps shall be taken to protect and secure access to such personal information data, and ensure that other individuals with access to the personal information data follow their privacy policies and procedures.

[0075] The present application contemplates that user selective blocking of use or access to personal information data can be provided. That is, the disclosure contemplates providing hardware and / or software to prevent or block access to such personal information data. Access to such personal information data can be minimized by limiting the collection of such personal information data and deleting such personal information data when it is no longer needed.

[0076] In the foregoing detailed description, reference is made to descriptive terms such as "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. for describing various embodiments of the application. The descriptive terms are used for the convenience of the reader in understanding the application but are not intended to limit the application. Furthermore, these descriptive terms do not imply that all embodiments of the application are identical or similar. Moreover, the specific features, structures, materials or characteristics described in the above description can be combined in any suitable manner in one or more embodiments or examples of the application. In addition, the described embodiments or examples are not mutually exclusive, and combinations of described embodiments or examples can be made without departing from the scope of the application. Furthermore, persons skilled in the art can make modifications and improvements to the described embodiments or examples without departing from the scope of the application.

[0077] In addition, the terms "first", "second", etc. are used herein only to describe various embodiments and do not imply these relative importance or a specific characteristic. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0078] Any process or method descriptions or blocks in flow charts or otherwise described herein represent embodiments that can be managed as one or more modules, segments, or portions of code that include one or more executable instructions for implementing specific logic functions or steps, and the various embodiments of the application contemplate the use of either software or hardware including a programmable computer for managing these modules, segments, or portions of code. The machine-readable medium or machine-accessible medium includes a non-transitory machine-readable medium, a machine-readable storage medium, a machine-accessible storage medium, or a machine- readable non-transitory storage medium. The machine-readable medium can include, but is not limited to, floppy diskettes, optical disks, Compact Discs (CDs), DVDs, Blu-ray discs, magnetic cassettes, magnetic tapes, RAMs, ROMs, EEPROMs, flash memories, or other types of machine-readable media suitable for storing electronic instructions.

[0079] The logic and / or steps represented in flow diagrams or otherwise described herein, for example, can be considered as a sequence of instructions to implement logic functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. In the context of this specification, a "computer-readable medium" can be any means that can contain, store, communicate, propagate or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a machine-readable storage device (e.g., magnetic, optical or other) a machine-readable storage diskette (e.g., floppy disk, optical disk, CD- ROM, etc.), a machine- readable storage card (e.g., PCMCIA card, etc.), a machine-readable storage tape (e.g., magnetic tape, optical tape, etc.), a machine-readable storage medium (e.g., RAM, ROM, etc.), a machine-readable signal (e.g., electrical, optical, etc.), a machine-readable medium (e.g., carrier wave, etc.) or any other suitable medium or means of embodying the program. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a RAM, a ROM, an EPROM, a FLASH memory card, an optical fiber, and a portable compact disc read-only memory (CD-ROM). Additionally, the computer-readable medium can be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example, via optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and stored in a computer memory.

[0080] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. As such, in some embodiments, the steps or methods can be implemented in hardware such as a special purpose computer, a programmed microprocessor or microcontroller, a microprocessor-based or a microcontroller-based application-specific integrated circuit, a peripheral integrated circuit element, a digital signal processor, a highly-parallelized architecture or other similar or well-known computing devices. In other embodiments, the steps or methods can be implemented in software that is stored in a memory and executed on a suitable instruction execution system. In other embodiments, the steps or methods can be implemented in a combination of both software and hardware.

[0081] Those of skill in the art would understand that information and signals can be represented using any of a variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0082] In addition, each of the function units in each embodiment of the present application can be integrated in one processing module, or each unit can be physically present separately, or two or more units can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software function module. When the integrated module is realized in the form of a software function module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0083] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0084] It should be understood that the various forms of flow shown above can be reordered, added or deleted steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0085] The above detailed description does not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and replacements can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A mechanical probe contact detection method for transformer electrical preventive testing, characterized in that: The following steps are involved: Placing a transformer in a predetermined position, periodically energizing the transformer, and inspecting the transformer housing using a mechanical probe, disconnecting the transformer from the power supply and re-energizing the transformer when the power-on time reaches a preset duration, repeating this process until the power-on voltage reaches a second detection voltage, which is the maximum voltage of the transformer. If it is determined that there is no leakage in the transformer housing, a first detection voltage is applied and different positions of the transformer are detected using a mechanical probe, wherein the first detection voltage is a low voltage current; If the test is normal, the transformer is moved to a predetermined position in the protection room, the fixed position of the transformer is connected to the probe of the mechanical probe, and a current of rated voltage is passed to test different positions of the transformer; If the detection is normal, a second detection voltage is applied to detect different positions of the transformer.

2. The method according to claim 1, characterized in that The method includes placing the transformer at a predetermined position, periodically energizing the transformer, and detecting the outer shell of the transformer using a mechanical probe. Each time the power-on time reaches a preset time, the power is turned off and then re-energized and then powered on again, and the process is repeated until the power-on voltage reaches a second detection voltage, which is the maximum voltage of the transformer. Placing the transformer at a predetermined position, applying a first detection voltage for a first preset duration, and performing a preliminary inspection on the transformer housing using a mechanical probe to determine whether the transformer has leakage; When the power-on time reaches the first preset time, the power is cut off, and the power-off time is the second preset time; When the power-off time reaches the second preset time, the voltage of the input current is increased by 100V, and then detection, power off, and power on are performed again, and this process is repeated until the voltage of the input current increases to the second detection voltage.

3. The method according to claim 2, characterized in that If it is determined that there is no leakage in the transformer housing, a first detection voltage is applied and different positions of the transformer are detected using a mechanical probe, wherein the first detection voltage is a low-voltage current, including: After the first test voltage is applied, the test personnel use a handheld mechanical probe to test the casing, terminal blocks and other key parts of the transformer. The first test voltage is 380V. The mechanical probe tests the insulation of the transformer layer by layer to ensure the electrical stability of each part of the transformer under low voltage. During the test, the test personnel wear insulating clothing and operate within the specified safety range.

4. The method according to claim 3, characterized in that The inspection personnel are composed of two people, one of whom holds the mechanical probe for inspection with an insulating rope wrapped around his waist. This person is the inspection personnel, and the other person is more than 5 meters away from the transformer and is the observer.

5. The method according to claim 4, characterized in that If the test is normal, the transformer is moved to a predetermined position in the protection room, the fixed position of the transformer is connected to the probe of the mechanical probe, and a current of rated voltage is passed to detect different positions of the transformer, including: Placing the transformer at a predetermined testing position in the protective chamber and ensuring that the transformer is fixed and stable to avoid movement during the testing process; Use a mechanical probe to connect its probe to a fixed position of the transformer. After the inspector leaves the protection room and reaches a safe position, pass a current of rated voltage for testing to detect the insulation performance of various parts of the transformer; Under rated voltage, check the transformer casing, wiring terminals and other key electrical parts layer by layer to ensure that they can work normally under rated voltage without abnormal leakage or faults; Wherein, a camera is provided in the protection room, and the inspector observes the transformer through the camera.

6. An electronic device, characterized in that: include: a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 5.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 5 when executed by a processor.

8. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 5 when executed by a processor.

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