An intelligent device for insulation type test and its control method

Abstract

The present invention discloses an intelligent device for insulation type testing and a control method thereof, comprising: an intelligent control cabinet, the intelligent control cabinet being used to automatically establish a test circuit with a test sample; an intelligent test system, the intelligent test system being used to read the basic information of the test sample, match the test sample with discrete test equipment and systems, select a test plan and run test parameters based on the basic information, and realize intelligent control of the test process by performing real-time analysis and judgment on the test data; and an automatic logistics system, the automatic logistics system being used to control the transfer of the test sample between upper and lower positions and between workstations based on the correspondence between the test sample and the discrete test equipment and systems. The intelligent device can effectively match the test sample with discrete test equipment and systems, realizing automation and intelligence of the test process.

Description

Technical Field

[0001] The invention belongs to the technical field of insulation performance testing, and relates to an intelligent device for insulation type testing and a control method thereof. Background Art

[0002] Medium voltage switchgear refers to switchgear with a rated voltage of 3.6kV~40.5kV.

[0003] Good insulation performance of medium-voltage switchgear is crucial for the safe operation of distribution networks. Therefore, medium-voltage switchgear is typically subject to insulation type testing. Traditional testing methods rely heavily on human operators, requiring frequent switching of test circuits. This results in complex testing procedures, low test efficiency, and a lack of intelligent testing.

[0004] Currently, insulation type tests for medium-voltage switchgear are mostly conducted in accordance with standards such as GB / T3906-2020, GB / T 11022-2020, and GB / T1985-2014. Taking a metal valve switchgear cabinet with a break test voltage higher than the ground test voltage as an example, the traditional wiring times are 34 times, which takes 102 minutes. This results in low test efficiency, and test engineers need to frequently enter and exit the high-voltage area, resulting in low test safety. The test is completely dependent on the test engineer and has a low level of intelligence. The logistics transfer time is approximately 30 minutes, and the test sample transfer time is relatively long. Summary of the Invention

[0005] In order to solve the problems of long test cycle and low safety in the existing insulation type test, the present invention provides an intelligent device for insulation type test and its control method. The intelligent device can effectively match the test product with discrete test equipment and systems, realizing the automation and intelligence of the test process.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An intelligent device for insulation type testing, comprising:

[0008] An intelligent control cabinet, which is used to automatically build a test circuit with the test product;

[0009] An intelligent testing system is used to read the basic information of the test product, match the test product with discrete test equipment and systems, select the test plan and run the test parameters based on the basic information, and intelligently control the test process by performing real-time analysis and judgment of the test data;

[0010] An automatic logistics system is used to control the transfer of samples between upper and lower positions and between workstations based on the correspondence between the samples and discrete test equipment and systems.

[0011] As a further improvement of the present invention, the intelligent control cabinet includes a first wall bushing connected to the test product, a second wall bushing connected to the power frequency test transformer, and a second wall bushing connected to the impulse voltage generator and its measurement system.

[0012] As a further improvement of the present invention, the test circuit of the intelligent control cabinet further comprises a first grounding switch;

[0013] The first grounding switch is connected to the test sample chassis and casing. During the test, the outer terminals of the first wall bushing are connected to the test sample terminals respectively, one of the outer terminals of the second wall bushing is connected to the power frequency test transformer, and the other outer terminals of the second wall bushing are connected to the impulse voltage generator and its measurement system respectively.

[0014] As a further improvement of the present invention, the intelligent test system includes a test template module, a test plan module and a test operation module;

[0015] The test template module automatically reads the basic information of the test product through RFID and automatically selects the test template;

[0016] The test plan module is used to automatically identify and add configured test templates to the test plan, and automatically select test items and test parameters based on the basic information of the test product. Test items include power frequency withstand voltage test or lightning impulse withstand voltage test;

[0017] The Run Test module is used to start a test based on a test template.

[0018] As a further improvement of the present invention, the operation test module includes a start / continue / pause / stop test unit, a door interlock safety detection unit, an equipment communication detection unit, and a test location selection function unit;

[0019] Start / continue / pause / stop test unit to control the entire test process;

[0020] Door interlock safety detection unit, used to detect whether the door interlock and equipment grounding are normal before starting / continuing the test;

[0021] Equipment communication detection unit, used to detect whether the equipment communication connection is normal before starting / continuing the test;

[0022] The test site selection functional unit is used to select the test site according to the basic information of the test product.

[0023] As a further improvement of the present invention, the automatic logistics system is provided with a waiting area and a test area, and the test samples are placed on the AGV shelves, and the test samples are transferred up and down and between workstations through the AGV shelves; the automatic logistics system is provided with a quick wiring device, and the test samples are connected to the quick wiring device through a cable in the waiting area, and are automatically connected to the intelligent control cabinet after the AGV shelves are in place.

[0024] As a further improvement of the present invention, the AGV shelf includes an insulator, an anti-skid plate, a slide, a handle, a support plate, a cable outlet hole, a quick wiring device and a base. The insulator is installed at the bottom of the base, the slide is installed on the base, the anti-skid plate is installed on the slide and can slide freely on the slide; the anti-skid plate can be fixed to the slide by rotating the handle, the support plate is arranged on the base, and a plurality of support plates are separated by gaps. A cable outlet hole is opened on the base, and a quick wiring device is installed on the side of the shelf.

[0025] As a further improvement of the present invention, the quick wiring device includes a first quick wiring device A and a second quick wiring device B, both of which include a metal conductor, an insulating contact arm, an insulating bracket, and an insulated cable. The metal conductor is installed in the insulating contact arm, the insulating contact arm is installed on the insulating bracket, and the insulated cable is connected to the metal conductor; the metal conductor of the first quick wiring device A protrudes from the insulating contact arm, the metal conductor of the second quick wiring device B is recessed in the insulating contact arm, a spring is installed in the insulating contact arm of the second quick wiring device B, and the spring of the second quick wiring device B is connected to the internal metal conductor; the protruding metal conductor of the first quick wiring device A and the insulating contact arm of the second quick wiring device B are automatically docked, and the metal conductor of the second quick wiring device B is in contact and conductive with the spring of the second quick wiring device B; the pressure sensor provides a feedback signal to confirm that the connection is normal; the insulated cable is used to connect a test piece or an intelligent control cabinet.

[0026] The test product is a medium voltage switchgear.

[0027] A control method for an intelligent device for insulation type testing, comprising:

[0028] The intelligent test system reads the basic information of the test product, matches the test product with discrete test equipment and systems, and then selects the test plan and running test parameters based on the basic information of the test product;

[0029] Control the transfer of test samples on the AGV shelves, such as upper and lower positions and between workstations, and then match them with test equipment and systems. The test samples on the AGV shelves can be connected to the intelligent control cabinet through a quick wiring device, and the test circuit is automatically established;

[0030] Control the transfer of test samples on the AGV shelf to the test station and connect it to the intelligent control cabinet; select the corresponding test template and run the test plan, start the test, and conduct real-time analysis and judgment on the test data.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] Compared with the traditional test method, which is completely dependent on the test engineer and has a low level of intelligence, the application of the present invention can realize the intelligent conduct of the test; specifically, the intelligent control cabinet has the function of automatically building a test circuit with the test sample. The intelligent test system reads the basic information of the test sample before the test, selects the test plan and runs the test parameters based on the basic information, and the automatic logistics system matches the test sample with the discrete test equipment and system to achieve physical connection. It also realizes intelligent control of the test process by performing real-time analysis and judgment on the test data, which can effectively match the test sample with the discrete test equipment and system and realize the automation of the test process. The traditional logistics transfer time is about 30 minutes. After the application of the automatic logistics system, the time is reduced to 5 minutes, and the efficiency is improved by more than 80%. The automatic logistics system eliminates the wiring time of the test sample at the test station, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings:

[0034] Figure 1 This is the overall architecture diagram;

[0035] Figure 2 This is the front view of the overall structure of the intelligent control cabinet;

[0036] Figure 3 This is the right view of the overall structure of the intelligent control cabinet;

[0037] Figure 4 This is the schematic diagram of the intelligent control cabinet.

[0038] In the figure: 1. external shell; 2. first grounding switch; 3. first wall bushing; 4. first insulating support; 5. first switch device; 6. second grounding switch; 7. second wall bushing; 8. second switch device; 9. third grounding switch; 10. ventilation hole; 11. second insulating support.

[0039] Figure 5 This is the architecture diagram of the intelligent test system;

[0040] Figure 6Diagram of the pilot project selection framework;

[0041] Figure 7 This is the main view of the AGV shelf;

[0042] Figure 8 This is the side view of the AGV shelf;

[0043] Figure 9 This is a top view of the AGV shelf;

[0044] Figure 10 This is a three-dimensional diagram of the AGV shelf;

[0045] Figure 11 This is the main view of the quick wiring device;

[0046] Figure 12 This is a side view of the quick connection device.

[0047] In the picture:

[0048] 12. Insulator; 13. Anti-slip plate; 14. Slide; 15. Handle; 16. Support plate; 17. Cable outlet; 18. Quick connection device; 19. Base;

[0049] 20. Metal conductor; 21. Insulated contact arm; 22. Insulated bracket; 23. Insulated cable; 24. Spring; 25. Pressure sensor. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only 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 ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0051] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] Figure 1 The invention provides an intelligent device for equipment insulation type testing, which is mainly based on an intelligent control cabinet, an intelligent testing system, and an automatic logistics system.

[0054] An intelligent control cabinet having a test circuit for automatic construction, the test circuit comprising a first wall bushing connected to the test object, a second wall bushing 7 connected to the power frequency test transformer, and a second wall bushing 7 connected to the impulse voltage generator and its measurement system;

[0055] An intelligent testing system, which is used to read the basic information of the test product, match the test product with discrete test equipment and systems, select the test plan, set test parameters and run the test based on the basic information, and realize intelligent control of the test process through real-time analysis and judgment of test data;

[0056] An automatic logistics system is used to control the transfer of samples between upper and lower positions and between workstations based on the correspondence between the samples and discrete test equipment and systems.

[0057] Among them, the intelligent control cabinet is the prerequisite for the intelligentization of the insulation type test of medium-voltage switchgear, which can realize the automatic construction of the test circuit; the intelligent test system organically, reliably and efficiently integrates the originally discrete test equipment and systems, and realizes intelligent control of the test process through real-time analysis and judgment of test data; the automatic logistics system is used to improve the flow efficiency of test products between various workstations.

[0058] The embodiments of the present invention are described using a medium-voltage switch as an example. However, this is not limited to medium-voltage switches and can also be applied to other compatible switches. The present invention enables intelligent insulation type testing of medium-voltage switchgear, improving test efficiency and reducing workload.

[0059] Figure 2 The overall structure front view of the intelligent control cabinet, Figure 3Right view of the overall structure of the intelligent control cabinet. Its working principle is as follows: connect the first grounding switch 2 to the test sample chassis and casing. During the test, connect the outer terminals of the first wall bushing 3 to the test sample terminals ABCabc respectively, connect the outer terminals of one of the second wall bushings 7 to the power frequency test transformer, and connect the outer terminals of the other second wall bushings 7 to the impulse voltage generator and its measurement system respectively.

[0060] For example, when conducting a power frequency withstand voltage test, with the high voltage phases Bcabc and F of the test specimen added to phase A and grounded, one of the second switch devices 8 is connected to one of the first switch devices 5. The first switch device 5 connected to the second switch device 8 is then connected to the inner terminal of the first wall bushing 3 at its upper end. The remaining second switch devices 8 are connected to the corresponding second grounding switches 6. The first wall bushings 3 at the lower end of the external housing 1 are respectively connected to the inner terminals of the second grounding switches 6 for grounding. Two third grounding switches 9 are connected to the inner terminals of the corresponding first wall bushings 3 at the upper end of the external housing 1 for grounding. The first grounding switch 2 is closed to ground the test specimen housing. A patent has been applied for the specific structure of the intelligent control, with application number 202110114817.1.

[0061] Figure 4 Schematic diagram of the intelligent control cabinet. The test circuit includes a first wall bushing connected to the test object, a second wall bushing 7 connected to the power-frequency test transformer, and a third wall bushing 7 connected to the impulse voltage generator and its measurement system. This allows for an integrated connection between the power-frequency test transformer, the impulse voltage generator and its measurement system, and the test object.

[0062] The intelligent testing system organically, reliably, and efficiently integrates previously discrete test equipment and system 1, discrete test equipment and system 2, and discrete test equipment and system n. It also implements intelligent control of the testing process through real-time analysis and judgment of test data. The intelligent testing system consists of three main functional modules: test templates, test plans, and operational tests. Each module contains multiple submodules. Figure 5 This is the architecture diagram of the intelligent test system.

[0063] The intelligent test system includes a test template module, a test plan module and a test operation module;

[0064] The test template module automatically reads the basic information of the test product through RFID technology and automatically selects the test template.

[0065] The test plan module is used to automatically identify and add configured test templates to the test plan, automatically select test items such as the power frequency withstand voltage test and the lightning impulse withstand voltage test based on the basic information of the test product, and automatically set the parameters of the power frequency withstand voltage test and the lightning impulse withstand voltage test;

[0066] The Run Test module is used to start a test based on a test template.

[0067] As an optional embodiment, upon entry, basic test sample information, such as commissioned test number, test sample number, test type, test items, test parameters, and included components, is automatically read via RFID. Based on this RFID-read information, the configured test template is automatically identified and added to the test plan. This basic test sample information serves as the starting point for all tests and determines the subsequent test process. This basic test sample information is then matched one-to-one with the corresponding test template data in the system.

[0068] The test item selection function module automatically selects test items such as power frequency withstand voltage test, lightning impulse withstand voltage test, auxiliary circuit, etc., and automatically sets parameters such as test voltage, test time, sampling time interval in power frequency withstand voltage test according to the information read by RFID, and test voltage, number of tests, charging time, interval time, whether the vacuum break is aging, number of wave modulation times, etc. in lightning impulse withstand voltage test. Figure 6 Select an architectural diagram for the pilot project.

[0069] The operation test module includes a start / continue / pause / stop test unit, a door interlock safety detection unit, an equipment communication detection unit, and a test location selection function unit;

[0070] The operational test includes modules for start / continue / pause / stop testing, door interlock safety testing, equipment communication testing, and test location selection. The test features start / continue / pause / stop buttons for full control of the test process. The door interlock safety test verifies that the door interlock and equipment grounding are functioning properly before the test starts / continues, providing an alarm for any abnormalities, ensuring the safety of test personnel and equipment. The test also verifies that equipment communication is functioning properly before the test starts / continues. The intelligent control cabinet's pneumatic valve detects the switch's full actuation status and provides feedback to the intelligent test system, providing an alarm for any abnormalities.

[0071] The automated logistics system enables sample loading and unloading, as well as transfers between workstations. By setting up waiting and testing areas, samples are first placed on AGV shelves. These shelves are then transported by automated AGV carts, enabling transfers between load and unload locations and between workstations. This reduces logistics transfer time from approximately 30 minutes to 5 minutes, effectively improving logistics efficiency.

[0072] In order to further improve the test efficiency, a quick wiring device is set up. The test sample is connected to the quick wiring device through a cable at the waiting station. After the AGV is put into operation, it is automatically connected to the intelligent control cabinet, eliminating the wiring time at the test station.

[0073] In order to more clearly illustrate the AGV rack and the quick wiring device, the following is a brief introduction to the drawings of the AGV rack and the quick wiring device.

[0074] Reference Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown, the AGV shelf includes an insulator 12, an anti-skid plate 13, a slide 14, a handle 15, a support plate 16, a cable outlet hole 17, a quick wiring device 18, and a base 19. The insulator 12 is installed at the bottom of the AGV shelf by bolt connection, and plays a supporting and insulating role. The slide 14 is installed on the base 19. The anti-skid plate 13 is installed on the slide 14 and can slide freely on the slide. It can be fixed to the slide 14 by rotating the handle 15. The support plate 16 is welded to the base 19, and there is a gap between the support plates 16. The purpose is to facilitate the placement and removal of the test sample by a forklift. A cable outlet hole 17 is opened on the base 19. The purpose is to facilitate the outlet of the test sample with a cable. A quick wiring device 18 is installed on the side of the AGV shelf, which can reduce the wiring time of the test sample and achieve quick wiring.

[0075] Reference Figure 11 and Figure 12 As shown, the quick wiring device 18 includes a first quick wiring device A and a second quick wiring device B. The first quick wiring device A and the second quick wiring device B both include a metal conductor 20, an insulating contact arm 21, an insulating bracket 22, and an insulating cable 23. The metal conductor 20 is installed in the insulating contact arm 21, the insulating contact arm 21 is installed on the insulating bracket 22, and the insulating cable 23 is connected to the metal conductor 20; the metal conductor 20 of the first quick wiring device A protrudes from the insulating contact arm 21, and the metal conductor 20 of the second quick wiring device B is recessed in the insulating contact arm 21. A spring 24 is installed in the insulating contact arm 21 of the second quick wiring device B, and the spring 24 of the second quick wiring device B is connected to the internal metal conductor 20; the protruding metal conductor 20 of the first quick wiring device A and the insulating contact arm 21 of the second quick wiring device B automatically dock, the metal conductor 20 of the second quick wiring device B and the spring 24 of the second quick wiring device B are in contact and conductive, and the pressure sensor 25 provides a feedback signal to confirm that the connection is normal; the insulating cable 23 is used to connect to the test piece or the intelligent control cabinet.

[0076] The working principle of the quick wiring device 18 is as follows: install the first quick wiring device A (or B) on the AGV shelf, and connect its cable to the test piece; connect the cable of the other quick wiring device to the intelligent control cabinet, use the AGV to move the test piece to the designated position, and the first quick wiring device A and B will automatically dock to complete the wiring.

[0077] The present invention also provides a control method for an intelligent device for insulation type testing, comprising:

[0078] The intelligent test system reads the basic information of the test product, matches the test product with discrete test equipment and systems, and selects the test plan and operating test parameters based on the basic information;

[0079] Control the transfer of test samples between upper and lower positions and workstations on the AGV shelf, and then match them with the test equipment and system. The test samples on the AGV shelf are connected to the intelligent control cabinet to automatically build a test circuit;

[0080] Control the transfer of test samples on the AGV shelf to the test station and connect it to the intelligent control cabinet; select the corresponding test template and run the test plan, start the test of the test sample, and realize intelligent control of the test process through real-time analysis and judgment of the test data.

[0081] The overall test process is as follows:

[0082] Before the test begins, place the test sample on the AGV shelf, slide the anti-slide plate to the test sample position, and turn the handle to fix the anti-slide plate on the slide to prevent the test sample from sliding during the flow process. After that, connect the test sample's incoming line unit and outgoing line unit to the quick wiring device; use the AGV automatic logistics system to transfer the test sample from the waiting station to the test station; select the corresponding test template and run the test plan, and then the intelligent test system automatically performs the test.

[0083] In summary, the present invention has the following advantages:

[0084] 1) Adopt intelligent solutions to realize intelligent insulation type testing of medium-voltage switchgear;

[0085] 2) The test template and test scheme functions cover most medium-voltage switchgear and can be expanded in the future;

[0086] 3) Door interlock safety test checks whether the door interlock and equipment grounding are normal before starting / continuing the test. It has an abnormal alarm function to provide safety protection for test personnel and test equipment;

[0087] 4) The invention of AGV shelves and quick wiring devices eliminates the time required for test samples to be operated and wired at the test station, thus improving test efficiency;

[0088] 5) The AGV rack is supported by insulating parts to maintain insulation from the ground;

[0089] 6) The AGV shelf adopts anti-skid plate design to improve stability during operation, and the test samples will not slide or fall during operation.

[0090] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0091] The further detailed description of the invention does not mean that the specific implementation methods of the invention are limited to this. For ordinary technicians in the technical field to which the invention belongs, they can make several simple deductions or substitutions without departing from the concept of the invention, which should be regarded as belonging to the scope of protection of the invention determined by the submitted claims.

Claims

1. An intelligent device for insulation type testing, characterized in that: include: An intelligent control cabinet, which is used to automatically build a test circuit with the test product; An intelligent testing system is used to read the basic information of the test product, match the test product with discrete test equipment and systems, select the test plan and run the test parameters based on the basic information, and intelligently control the test process by performing real-time analysis and judgment of the test data; An automatic logistics system, which is used to control the transfer of test samples between upper and lower positions and between workstations based on the correspondence between the test samples and discrete test equipment and systems; The intelligent test system includes a test template module, a test plan module and a test operation module; The test template module automatically reads the basic information of the test product through RFID and automatically selects the test template; The test plan module is used to automatically identify and add configured test templates to the test plan, and automatically select test items and test parameters based on the basic information of the test product. Test items include power frequency withstand voltage test or lightning impulse withstand voltage test; The Run Test module is used to start a test according to the test template; The operation test module includes a start / continue / pause / stop test unit, a door interlock safety detection unit, an equipment communication detection unit, and a test location selection function unit; Start / continue / pause / stop test unit to control the entire test process; Door interlock safety detection unit, used to detect whether the door interlock and equipment grounding are normal before starting / continuing the test; Equipment communication detection unit, used to detect whether the equipment communication connection is normal before starting / continuing the test; The test site selection function unit is used to select the test site according to the basic information of the test product; The automatic logistics system is provided with a waiting area and a test area, and the test samples are placed on the AGV shelves, and the test samples are transferred between upper and lower positions and between workstations through the AGV shelves; the automatic logistics system is provided with a quick wiring device (18), and the test samples are connected to the quick wiring device through a cable in the waiting area, and the AGV shelves are automatically connected to the intelligent control cabinet after being placed on the shelves; The quick wiring device (18) includes a first quick wiring device A and a second quick wiring device B. The first quick wiring device A and the second quick wiring device B both include a metal conductor (20), an insulating contact arm (21), an insulating bracket (22), and an insulating cable (23). The metal conductor (20) is installed in the insulating contact arm (21), the insulating contact arm (21) is installed on the insulating bracket (22), and the insulating cable (23) is connected to the metal conductor (20); the metal conductor (20) of the first quick wiring device A protrudes from the insulating contact arm (21), and the metal conductor (20) of the second quick wiring device B The insulating contact arm (21) is recessed, and a spring (24) is installed in the insulating contact arm (21) of the second quick wiring device B. The spring (24) of the second quick wiring device B is connected to the internal metal conductor (20); the protruding metal conductor (20) of the first quick wiring device A and the insulating contact arm (21) of the second quick wiring device B are automatically connected, and the metal conductor (20) of the second quick wiring device B and the spring (24) of the second quick wiring device B are in contact and conductive; the pressure sensor (25) provides a feedback signal for confirming that the connection is normal; the insulating cable (23) is used to connect a test piece or an intelligent control cabinet.

2. The intelligent device for insulation type testing according to claim 1, characterized in that: The intelligent control cabinet comprises a first wall bushing connected to a test object, a second wall bushing (7) connected to an industrial frequency test transformer, and a second wall bushing (7) connected to an impulse voltage generator and a measurement system thereof.

3. The intelligent device for insulation type testing according to claim 2, characterized in that: The test circuit of the intelligent control cabinet further comprises a first grounding switch (2); The first grounding switch (2) is connected to the test sample chassis and the housing. During the test, the outer terminals of the first wall bushing (3) are respectively connected to the test sample terminals, one outer terminal of the second wall bushing (7) is connected to the power frequency test transformer, and the outer terminals of the other second wall bushings (7) are respectively connected to the impulse voltage generator and its measurement system.

4. The intelligent device for insulation type testing according to claim 1, characterized in that: The AGV shelf comprises an insulator (12), an anti-skid plate (13), a slide (14), a handle (15), a support plate (16), a cable outlet hole (17) and a base (19), wherein the insulator (12) is mounted on the bottom of the base (19), the slide (14) is mounted on the base (19), the anti-skid plate (13) is mounted on the slide (14) and can slide freely on the slide; the anti-skid plate (13) can be fixed on the slide (14) by rotating the handle (15), the support plate (16) is arranged on the base (19), and gaps are left between the plurality of support plates (16), a cable outlet hole (17) is opened on the base (19), and a quick wiring device (18) is installed on the side of the shelf.

5. The intelligent device for insulation type testing according to claim 1, characterized in that: The test product is a medium voltage switchgear.

6. A control method for an intelligent device for insulation type testing, based on the intelligent device for insulation type testing according to any one of claims 1 to 5, characterized in that: include: The intelligent test system reads the basic information of the test product, matches the test product with discrete test equipment and systems, and then selects the test plan and running test parameters based on the basic information of the test product; Control the transfer of the test sample on the AGV shelf between upper and lower positions and between workstations, and then match it with the test equipment and system. The test sample is connected to the intelligent control cabinet on the AGV shelf through a quick wiring device (18), and a test circuit is automatically established; Control the transfer of test samples on the AGV shelf to the test station and connect it to the intelligent control cabinet; select the corresponding test template and run the test plan, start the test, and conduct real-time analysis and judgment on the test data.

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