Lightning arrester test system and test method

Abstract

The invention discloses a lightning arrester test system and test method, the test system comprises a test chamber and a conveying mechanism, and the conveying mechanism can convey a to-be-detected lightning arrester to the test chamber and transfer the detected lightning arrester from the test chamber to a designated position; the test chamber comprises a test area and a control room. The test area is internally provided with a test power supply, a lifting assembly, a high-voltage contact grading ring, a composite insulator, a binding post contact cylinder, a power frequency test device, a continuous current test device and a partial discharge test device. The test power supply is connected with the high-voltage contact grading ring through the control circuit; the high-voltage contact grading ring is connected with the lifting assembly through a composite insulator; and the binding post contact cylinder is connected with a control circuit. A control assembly is arranged in the control chamber and can generate a test report according to test data, and the conveying mechanism and the lifting assembly are both connected with the control assembly. According to the lightning arrester test system disclosed by the invention, the working efficiency is improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning arresters, and more specifically, to a lightning arrester test system and a test method. Background Art

[0002] As an important device to protect power equipment from overvoltage, the performance of lightning arrester is directly related to the safe and stable operation of the power system. Therefore, it is very important to carry out automated testing and inspection of lightning arrester.

[0003] The existing arrester test system usually adopts a split structure, that is, each device is set up independently, such as the test power supply, control circuit, display, measurement and other equipment are all separate. These devices are connected by cables to form a complex system. Operators need to manually control each device to complete tedious tasks such as wiring and data processing. At the same time, the existing system is often limited to a single test item, such as power frequency reference voltage, continuous current test, partial discharge detection, etc., and frequent wiring changes are required to complete all tests.

[0004] The existing automated lightning arrester test and inspection system has the following problems: 1) The split structure of the equipment increases the complexity of the system. Operators need to connect equipment, wire and process data, which is time-consuming and labor-intensive, and has a high error rate; 2) The existing system only supports a single test item, and multiple wirings are required to complete a comprehensive test, which is time-consuming and costly, and increases the workload of operators; 3) The existing system lacks automatic control functions and requires manual operation, resulting in low work efficiency.

[0005] In summary, there is much room for improvement in the existing automated test and inspection system for lightning arresters in terms of efficiency, accuracy, and ease of operation.

[0006] Therefore, how to improve the efficiency of lightning arrester testing and inspection and reduce the labor intensity of staff has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a lightning arrester test system to improve the experimental efficiency and reduce the labor intensity of the staff.

[0008] Another object of the present invention is to provide a lightning arrester testing method, using the above-mentioned lightning arrester testing system.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A lightning arrester test system includes a test chamber and a conveying mechanism;

[0011] The conveying mechanism can convey the arrester to be tested to the test chamber, and transfer the arrester that has completed the test from the test chamber to the designated location;

[0012] The test chamber includes a test area and a control room. The test area is equipped with a test power supply, lifting components, high-voltage contact grading rings, composite insulators, terminal contact cylinders, power frequency test equipment, continuous current test equipment and partial discharge test equipment;

[0013] The test power supply is connected to the high-voltage contact grading ring through the control circuit; the high-voltage contact grading ring is connected to the lifting assembly through the composite insulator; the terminal contact cylinder is connected to the control circuit; when testing, the terminal contact cylinder is connected to the low-voltage terminal of the lightning arrester, and the high-voltage contact grading ring is in contact with the high-voltage end of the lightning arrester to form a closed loop;

[0014] The power frequency test equipment, continuous current test equipment and partial discharge test equipment are all connected to the arrester;

[0015] A control component is arranged in the control room. The control component includes a display screen to display the test results. The control component can generate a test report according to the test data. The conveying mechanism and the lifting component are both connected to the control component.

[0016] Optionally, in the above-mentioned lightning arrester test system, a discharge component is provided in the test area, and after the test of the lightning arrester to be tested is completed, the discharge component is connected to the lightning arrester to discharge the lightning arrester.

[0017] Optionally, in the above-mentioned lightning arrester test system, the discharge assembly includes a grounded rotating cylinder, and the grounded rotating cylinder is arranged on the lifting assembly through a slider.

[0018] Optionally, in the above-mentioned lightning arrester test system, the test power supply is connected to the test voltage regulator.

[0019] Optionally, the above-mentioned lightning arrester test system further includes a fixing mechanism, which is used to fix the lightning arrester to be tested.

[0020] Optionally, in the above-mentioned arrester test system, the fixing mechanism includes a cylinder; or,

[0021] The fixing mechanism comprises an electric telescopic rod and a clamping part connected to the electric telescopic rod, and the clamping part is used for clamping the arrester to be detected.

[0022] Optionally, in the above-mentioned arrester test system, the conveying mechanism includes a first conveying assembly and a second conveying assembly, the first conveying assembly conveys the arrester to be tested from a storage position to a position close to the test chamber, and conveys the arrester after the test to a designated position;

[0023] The arrester to be tested is transported to the test chamber by the second transport assembly, and the arrester after the test is transported from the test chamber to the first transport assembly by the second transport assembly.

[0024] Optionally, in the above-mentioned arrester test system, the arrester is moved between the first conveying assembly and the second conveying assembly by a lifting and transplanting mechanism; or,

[0025] The lightning arrester is moved between the first conveying assembly and the second conveying assembly by a mechanical arm.

[0026] Optionally, in the above-mentioned lightning arrester test system, the lifting assembly includes a driving part, a screw, a first nut and a second nut, the driving part is connected to the screw, the first nut and the second nut are both matched with the screw thread, the composite insulator is connected to the first nut, and the slider is connected to the second nut.

[0027] A lightning arrester test method, using the above-mentioned lightning arrester test system to perform test inspection, is characterized by comprising the following steps:

[0028] S1. The conveying mechanism conveys the arrester to be tested to the test chamber through a tray;

[0029] S2, the terminal contact cylinder's terminal is connected to the low voltage terminal of the arrester to be tested;

[0030] S3, the lifting assembly moves, controlling the high-voltage contact grading ring to automatically fall and contact the high-voltage end of the arrester to be tested, forming a high-voltage conductive path;

[0031] S4. Test and inspection;

[0032] S5. After the test is completed, the conveying mechanism will transport the lightning arrester after inspection to the designated location.

[0033] The lightning arrester test system disclosed in the present invention integrates a test power supply, a control circuit, a display control component and a test device into one, thereby simplifying the complexity of the system; the lightning arrester is transported by a conveying mechanism, thereby realizing automatic operation, eliminating the need for human handling, reducing the links of manual operation, improving work efficiency and safety, and reducing the labor intensity of the staff; by setting a lifting component, the lifting height of the high-voltage contact grading ring can be adjusted according to the height of the lightning arrester to be tested, thereby meeting the test requirements of lightning arresters of various heights, and the operation is convenient; when wiring, it is only necessary to connect the terminal of the terminal contact cylinder with the low-voltage terminal of the lightning arrester, thereby reducing the labor intensity of the staff and improving the detection efficiency; multiple detection items such as power frequency reference voltage test, continuous current test, residual pressure test under nominal discharge current, partial discharge test and current distribution test can be completed at one time, thereby reducing the trouble of multiple wiring, improving the test efficiency, and having a high degree of integration; the control component can generate a test report according to the test structure, thereby further improving the detection efficiency, reducing the probability of errors, and improving the accuracy of lightning arrester test inspection.

[0034] The lightning arrester test method disclosed in the present invention has the same technical effect as the lightning arrester test system, and will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A top view of a lightning arrester test system disclosed in an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the arrangement of the test area equipment disclosed in the embodiment of the present invention Figure 1 ;

[0038] Figure 3 A schematic diagram of the arrangement of the test area equipment disclosed in the embodiment of the present invention Figure 2 ;

[0039] Figure 4 A top view of a test chamber disclosed in an embodiment of the present invention;

[0040] Figure 5 The present invention is a flowchart of a lightning arrester testing method disclosed in an embodiment of the present invention.

[0041] Among them, 100 is the test chamber, 100-1 is the test area, and 100-2 is the control room;

[0042] 101 is a test power supply, 102 is a lifting assembly, 1021 is a driving unit, 1022 is a lead screw, 1023 is a first nut, 103 is a high-voltage contact grading ring, 1031 is a high-voltage conductor, 104 is a composite insulator, 105 is a terminal contact cylinder, 106 is a grounding rotary cylinder, 107 is a power frequency test device, 108 is a continuous current test device, 109 is a partial discharge test device, 110 is a fixing mechanism, 111 is a test voltage regulator, and 112 is a lifting door;

[0043] 200 is a conveying mechanism, 210 is a first conveying assembly, 220 is a second conveying assembly, 221 is a first conveying unit, 222 is a second conveying unit, 223 is a third conveying unit, and 201 is a tray;

[0044] 300 is the lightning arrester. DETAILED DESCRIPTION

[0045] The core of the invention is to disclose a lightning arrester test system to improve the experimental efficiency and reduce the labor intensity of the staff.

[0046] Another object of the present invention is to provide a lightning arrester testing method, using the above-mentioned lightning arrester testing system.

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0048] like Figure 1 As shown, an embodiment of the present invention discloses a lightning arrester test system, including a test chamber 100 and a conveying mechanism 200 .

[0049] A tray 201 is provided on the conveying mechanism 200, and the tray 201 is used to place the lightning arrester 300. The tray 201 is preferably made of insulating material. The conveying mechanism 200 can convey the lightning arrester 300 to be tested to the test chamber 100, and transfer the lightning arrester 300 that has completed the test from the test chamber 100 to a designated location.

[0050] like Figure 3-Figure 4As shown, the test chamber 100 includes a test area 100-1 and a control room 100-2. Preferably, the test area 100-1 is provided with a shielding structure, and the test area 100-1 is provided with a lifting door 112. The test area 100-1 is provided with a test power supply 101, a lifting assembly 102, a high-voltage contact grading ring 103, a composite insulator 104, a terminal contact cylinder 105, a power frequency test equipment 107, a continuous current test equipment 108 and a partial discharge test equipment 109. The test power supply 101 is connected to the high-voltage contact grading ring 103 through a control circuit, and the control circuit is preferably a PLC control circuit. The high-voltage contact grading ring 103 is connected to the lifting assembly 102 through the composite insulator 104, and the terminal contact cylinder 105 is connected to the control circuit. Specifically, one end of the composite insulator 104 is connected to the lifting assembly 102, and the other end is connected to the high-voltage contact grading ring 103, so as to connect and insulate the lifting assembly 102 and the high-voltage test part. The control circuit includes a high voltage wire 1031 connected to the high voltage contact grading ring 103 .

[0051] When testing, the terminal of the terminal contact cylinder 105 is connected to the low voltage terminal of the lightning arrester 300, and the high voltage contact equalizing ring 103 is in contact with the high voltage end of the lightning arrester 300 to form a closed loop.

[0052] like Figure 4 As shown, the power frequency test equipment 107, the continuous current test equipment 108 and the partial discharge test equipment 109 are all connected to the arrester 300. The power frequency test equipment 107 measures the power frequency reference voltage, the continuous current test equipment 108 measures the resistive current and the full current value under the continuous operating voltage, and the partial discharge test equipment 109 is used to detect the partial discharge phenomenon of the product to be tested to evaluate the insulation state of the product. The arrester 300 can be subjected to power frequency reference voltage test (under the power frequency reference current selected by the manufacturer), continuous current test, residual voltage test under nominal discharge current, partial discharge test and current distribution test, etc. Specifically, the measurement range of the power frequency reference voltage covers 1-250kV, with an accuracy of ±2%; the partial discharge measurement background is 1pC. The test equipment is preferably a high-precision test equipment.

[0053] The control room 100 - 2 is provided with a control component, which includes a display screen to display the test results, and can generate a test report based on the test data. The conveying mechanism 200 and the lifting component 102 are both connected to the control component.

[0054] A displacement sensor is provided on the high-voltage contact equalizing ring 103 , and the displacement sensor is connected to the control component. The driving part of the lifting component 102 is connected to the control component. The lifting height of the lifting component 102 is controlled according to the displacement signal detected by the displacement sensor.

[0055] When it is necessary to perform a high voltage test on the arrester 300, the conveying mechanism 200 conveys the assembled arrester 300 to the test area 100-1, the terminal of the terminal contact cylinder 105 is connected to the low voltage terminal of the arrester 300, and the lifting component 102 is actuated to control the high voltage contact equalizing ring 103 to fall to contact the high voltage end of the arrester 300 to be tested, forming a high voltage conductive path, and after the connection is completed, the high voltage test can be performed. Specifically, a test button can be set on the display screen, and the test inspection can be performed by pressing the test button or issuing a control command to the control component. All parameters during the test are displayed on the display screen, and the control component generates a test report based on the test results.

[0056] It should be noted that the lifting assembly 102 includes a variety of solutions, such as a telescopic rod, a cylinder, a slide rail and a slider, or a linear motor. As long as it is possible to adjust the lifting of the high-voltage contact equalizing ring 103 according to the height of the lightning arrester 300 to be tested so that the high-voltage contact equalizing ring 103 contacts the high-voltage end of the lightning arrester 300, it will be sufficient.

[0057] If the arrester 300 to be tested fails the test, the control component can send out an alarm signal and perform a secondary test on the arrester 300. If the test result is still unqualified, the conveying mechanism 200 can convey the arrester 300 to the unqualified area.

[0058] The lightning arrester test system disclosed in the embodiment of the present invention integrates the test power supply 101, the control circuit, the display control component and the test equipment into one, thereby simplifying the complexity of the system; the lightning arrester 300 is transported by the conveying mechanism 200, thereby realizing automatic operation, eliminating the need for personnel to carry it, reducing the manual operation links, improving work efficiency and safety, and reducing the labor intensity of the staff; by setting the lifting component 102, the lifting height of the high-voltage contact grading ring 103 can be adjusted according to the height of the lightning arrester 300 to be tested, thereby meeting the test requirements of lightning arresters 300 of various heights, and the operation is convenient ; When wiring, you only need to connect the terminal contact cylinder 105 to the low-voltage terminal of the lightning arrester 300, which can reduce the labor intensity of the staff and improve the detection efficiency; it can complete multiple detection items such as power frequency reference voltage test, continuous current test, residual pressure test under nominal discharge current, partial discharge test and current distribution test at one time, reducing the trouble of multiple wiring, improving the efficiency of testing, and having a high degree of integration; the control component can generate a test report according to the test structure, which can further improve the detection efficiency, reduce the probability of errors, and improve the accuracy of the lightning arrester 300 test inspection.

[0059] Furthermore, if Figure 2 and Figure 3As shown, the test area 100 - 1 is provided with a discharge component. After the test of the arrester 300 to be tested is completed, the discharge component is connected to the arrester 300 to discharge the residual voltage of the arrester 300 .

[0060] In some specific embodiments, Figure 2 As shown, the discharge assembly includes a grounded rotary cylinder 106, which is disposed on the lifting assembly 102 via a slider. When the test is completed, the test power supply 101 is disconnected, so that the grounded rotary cylinder 106 slides along the lifting assembly 102, so that the grounded rotary cylinder 106 is connected to the composite insulator 104, so that the arrester 300 discharges. During the test of the arrester 300, the grounded rotary cylinder 106 is disconnected from the composite insulator 104.

[0061] Furthermore, if Figure 4 As shown, in order to adjust the output voltage and adapt to the test requirements of the arrester 300 of different voltage levels, the test power supply 101 is connected to the test voltage regulator 111.

[0062] Furthermore, in order to fix the arrester 300 during the high voltage test, the arrester test system further includes a fixing mechanism, which is used to fix the arrester 300 to be tested.

[0063] In some specific embodiments, the fixing mechanism 110 includes a cylinder, a piston rod of the cylinder contacts the bottom end of the arrester 300 to be tested, and a clamping portion capable of clamping the arrester 300 can be provided on the piston rod of the cylinder to ensure the firmness of the fixation of the arrester 300.

[0064] In some other specific embodiments, the fixing mechanism 110 includes an electric telescopic rod and a clamping portion connected to the electric telescopic rod, and the clamping portion is used to clamp the lightning arrester 300 to be tested.

[0065] Furthermore, if Figure 1 As shown, the conveying mechanism 200 includes a first conveying assembly 210 and a second conveying assembly 220. The first conveying assembly 210 conveys the arrester 300 to be tested from the storage position to a position close to the test chamber 100, and then transfers it to the second conveying assembly 220 and conveys it to the test chamber 100. After the test, the arrester 300 is conveyed from the test chamber 100 to the first conveying assembly 210 by the second conveying assembly 220, and then conveyed to the designated position by the first conveying assembly 210. The first conveying assembly 201 and the second conveying assembly 220 are preferably double-speed chain conveyor lines.

[0066] Specifically, the second conveying assembly 220 includes a first conveying section 221, a second conveying section 222 and a third conveying section 223, wherein the third conveying section 223 is located in the test area 100-1, and the first conveying section 221 is used to convey the lightning arrester 300 to be tested conveyed by the first conveying assembly 210 to the third conveying section 223. After the test is completed, the third conveying section 223 first conveys the lightning arrester 300 after the test to the first conveying section 221, then to the second conveying section 222, and then to the first conveying assembly 210.

[0067] Further, the arrester 300 is moved between the first conveying assembly 210 and the second conveying assembly 220 by a lifting and transplanting mechanism, which is an existing mechanism and the specific structure is not described again. Alternatively, the arrester 300 is moved between the first conveying assembly 210 and the second conveying assembly 220 by a mechanical arm.

[0068] Furthermore, the lifting assembly 102 includes a driving unit 1021, a lead screw 1022, a first nut 1023, and a second nut. The driving unit 1021 is connected to the lead screw 1022. The first nut 1023 and the second nut are both threadedly matched with the lead screw 1022. The composite insulator 104 is connected to the first nut 1023, and the slider is connected to the second nut. In order to ensure that the grounded rotary cylinder 106 is connected to the composite insulator 104 after the test, a displacement sensor can be provided on the grounded rotary cylinder 106. The displacement sensor is connected to the control assembly to control the lifting distance of the lead screw 1022 according to the displacement signal sent by the displacement sensor. The driving unit 1021 can be a pneumatic motor, an electric motor, etc.

[0069] In addition, the present invention also discloses a lightning arrester test method, such as Figure 5 As shown, the following steps are included:

[0070] S1, the conveying mechanism 200 conveys the arrester 300 to be tested to the test chamber 100 via the tray 201;

[0071] S2, the terminal of the terminal contact cylinder 105 is connected to the low voltage terminal of the arrester 300 to be tested;

[0072] S3, the lifting assembly 102 is actuated to control the high-voltage contact grading ring 103 to automatically fall and contact the high-voltage end of the arrester 300 to be tested, thereby forming a high-voltage conductive path;

[0073] S4. Test and inspection;

[0074] S5. After the test is completed, the conveying mechanism 200 conveys the lightning arrester 300 after the test to a designated location.

[0075] In step S5, after the test is completed, the arrester 300 needs to be discharged through the discharge component, and after the discharge is completed, it is transported to the designated location.

[0076] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0078] The terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0079] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A lightning arrester test system, characterized in that: It comprises a test chamber (100) and a conveying mechanism (200); The conveying mechanism (200) is capable of conveying the arrester (300) to be tested to the test chamber (100), and transporting the arrester (300) that has completed testing from the test chamber (100) to a designated location; The test chamber (100) comprises a test area (100-1) and a control room (100-2); the test area (100-1) is provided with a test power supply (101), a lifting assembly (102), a high-voltage contact grading ring (103), a composite insulator (104), a terminal contact cylinder (105), a power frequency test device (107), a continuous current test device (108) and a partial discharge test device (109); The test power supply (101) is connected to the high-voltage contact grading ring (103) through a control circuit; the high-voltage contact grading ring (103) is connected to the lifting assembly (102) through the composite insulator (104); the terminal contact cylinder (105) is connected to the control circuit; when testing, the terminal contact cylinder (105) is connected to the low-voltage terminal of the lightning arrester (300), and the high-voltage contact grading ring (103) is in contact with the high-voltage end of the lightning arrester (300) to form a closed loop; The power frequency test equipment (107), the continuous current test equipment (108) and the partial discharge test equipment (109) are all connected to the lightning arrester (300); A control component is arranged in the control room (100-2), the control component comprising a display screen for displaying test results, the control component being capable of generating a test report based on the test data, and the conveying mechanism (200) and the lifting component (102) are both connected to the control component.

2. The arrester test system according to claim 1, characterized in that: The test area (100-1) is provided with a discharge component, and after the test of the lightning arrester (300) to be tested is completed, the discharge component is connected to the lightning arrester (300) to discharge the lightning arrester (300).

3. The arrester test system according to claim 2, characterized in that: The discharge assembly comprises a grounded rotating cylinder (106), and the grounded rotating cylinder (106) is arranged on the lifting assembly (102) via a slider.

4. The arrester test system according to claim 1, characterized in that: The test power supply (101) is connected to a test voltage regulator (111).

5. The arrester test system according to claim 1, characterized in that: It also comprises a fixing mechanism (110), wherein the fixing mechanism (110) is used to fix the lightning arrester (300) to be tested.

6. The arrester test system according to claim 5, characterized in that: The fixing mechanism (110) comprises a cylinder; or, The fixing mechanism (110) comprises an electric telescopic rod and a clamping portion connected to the electric telescopic rod, the clamping portion being used to clamp the lightning arrester (300) to be tested.

7. The arrester test system according to claim 3, characterized in that: The conveying mechanism (200) comprises a first conveying component (210) and a second conveying component (220), wherein the first conveying component (210) conveys the arrester (300) to be tested from a storage position to a position close to the test chamber (100), and conveys the arrester (300) to a designated position after the test is completed; The arrester (300) to be tested is transported to the test chamber (100) by the second transport assembly (220), and after the test, the arrester (300) is transported from the test chamber (100) to the first transport assembly (210) by the second transport assembly (220).

8. The arrester test system according to claim 7, characterized in that: The lightning arrester (300) is moved between the first conveying assembly (210) and the second conveying assembly (220) by means of a lifting and transplanting mechanism; or, The lightning arrester (300) is moved between the first conveying assembly (210) and the second conveying assembly (220) by a mechanical arm.

9. The arrester test system according to claim 8, characterized in that: The lifting assembly (102) comprises a driving unit (1021), a lead screw (1022), a first nut (1023) and a second nut; the driving unit (1021) is connected to the lead screw (1022); the first nut (1023) and the second nut are both threadedly matched with the lead screw (1022); the composite insulator (104) is connected to the first nut (1023); and the slider is connected to the second nut.

10. A lightning arrester testing method, using the lightning arrester testing system according to any one of claims 1 to 9 to perform testing and inspection, characterized in that: The steps include: S1, the conveying mechanism (200) conveys the arrester (300) to be tested to the test chamber (100) via the tray (201); S2, connecting the terminal of the terminal contact cylinder (105) to the low-voltage terminal of the lightning arrester (300) to be tested; S3, the lifting assembly (102) is activated to control the high-voltage contact grading ring (103) to automatically fall down and contact the high-voltage end of the arrester (300) to be tested, thereby forming a high-voltage conductive path; S4. Test and inspection; S5. After the test is completed, the transport mechanism (200) transports the lightning arrester (300) after the test to a designated location.

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