A lightning arrester performance detection device applied to a smart grid and a lightning arrester

Abstract

The application belongs to the technical field of lightning arrester detection, and particularly relates to a lightning arrester performance detection device applied to a smart power grid and a lightning arrester. In simulation, only the influence of weather factors on the electrical performance of the lightning arrester is considered, and unexpected situations (such as foreign matter covering the lightning arrester) caused by the weather factors are not considered, so that the detection of the device is not comprehensive. The following scheme is proposed, which comprises: a lightning arrester body, one end of the lightning arrester body is provided with a high-voltage end, and the other end of the lightning arrester body is provided with a grounding end; and a detection simulation bin, a detection base is arranged on the detection simulation bin. The lightning arrester performance detection device applied to the smart power grid and the lightning arrester have the effect of improving the comprehensiveness of electrical performance detection. When detection is performed, the device can consider unexpected situations (such as foreign matter covering the lightning arrester) caused by weather factors, and simulate actual working conditions by covering the foreign matter, so as to increase the detection use effect of the device.

Description

Technical Field

[0001] This invention relates to the field of surge arrester testing technology, and in particular to a surge arrester performance testing device and surge arrester for use in smart grids. Background Technology

[0002] Surge arresters are critical devices in power systems that protect electrical equipment from transient overvoltage damage. Their core function is like a "voltage safety valve," limiting lightning strikes or operational overvoltages to safe levels within nanoseconds, ensuring stable grid operation. Surge arresters are connected between cables and ground, typically in parallel with the protected equipment. They can also effectively protect communication equipment; in the event of abnormal voltage, the arrester will activate and provide protection.

[0003] Surge arrester performance testing is a core operation and maintenance method to ensure the safety of power systems. It assesses the overvoltage protection capability and health status through electrical parameter measurement and operating condition simulation.

[0004] Existing surge arresters require electrical performance testing during operation. This testing can be conducted by simulating actual operating conditions to simulate the electrical performance of the surge arrester during actual operation. However, the simulation usually only considers the impact of weather factors on the electrical performance of the surge arrester, without taking into account unexpected situations caused by weather factors (such as foreign objects covering the surge arrester), thus making the testing of the device incomplete. Summary of the Invention

[0005] This invention discloses a surge arrester performance testing device, which aims to solve the technical problem in the background art that when conducting simulations, only the influence of weather factors on the electrical performance of surge arresters is usually considered, without considering unexpected situations caused by weather factors (such as foreign objects covering the surge arrester), thus making the device's testing insufficient.

[0006] This invention proposes a surge arrester for use in smart grids, comprising:

[0007] The surge arrester body has a high-voltage terminal at one end and a grounding terminal at the other end.

[0008] A surge arrester performance testing device includes a surge arrester as described above for use in smart grids, comprising:

[0009] A testing simulation chamber is provided, and a testing base is provided on the testing simulation chamber. Two support frames are provided on the testing base.

[0010] A high-voltage electrical frame is mounted on one of the support frames, and a positive terminal is provided on the high-voltage electrical frame.

[0011] A grounding frame is mounted on another support frame, and a negative terminal is provided on the grounding frame.

[0012] A coverage detection unit is disposed on a detection base. The coverage detection unit is used to simulate the actual working condition of foreign object coverage, thereby improving the comprehensiveness of electrical performance detection.

[0013] A flame retardant detection module is mounted on the detection base. The flame retardant detection module is used to prevent accidents during electrical performance testing and to avoid simulated combustion caused by foreign objects covering the device.

[0014] In a preferred embodiment, the coverage detection unit includes:

[0015] Four mounting frames are provided, each of which is equipped with a mounting shaft, and each of the four mounting shafts is equipped with a bracket plate;

[0016] Two servo motors are mounted on two of the mounting frames, and the output shafts of the two servo motors are connected to one end of two of the mounting shafts.

[0017] In a preferred embodiment, the coverage detection unit further includes:

[0018] Multiple guide rods are respectively set on four support plates, and the same movable frame is set on every two adjacent guide rods;

[0019] Two mounting plates are respectively mounted on four movable frames, and each of the two mounting plates is equipped with a linear guide rail.

[0020] Multiple telescopic springs are respectively disposed on the outside of multiple guide rods. One end of each of the multiple telescopic springs is fixedly connected to the outer wall of four support plates, and the other end of each of the multiple telescopic springs is fixedly connected to the outer wall of four movable frames.

[0021] In a preferred embodiment, the coverage detection unit further includes:

[0022] Two linear lead screws are respectively mounted on two linear guide rails, and the same slider is mounted on both the linear lead screws and the linear guide rails on the same side;

[0023] Two sliding components are respectively mounted on two linear guide rails;

[0024] Two stepper motors are respectively mounted on two linear guide rails, and the output shafts of the two stepper motors are respectively connected to one end of two linear lead screws through couplings.

[0025] In a preferred embodiment, the coverage detection unit further includes:

[0026] Four fixing components are respectively set on two slider components and two slider components, and the same electric telescopic rod is set on each pair of adjacent fixing components;

[0027] Two fixed rollers are respectively mounted on two sliding blocks;

[0028] Two rotating rollers are respectively mounted on two sliding members, and the two fixed rollers and the two rotating rollers are provided with the same covering strip.

[0029] In a preferred embodiment, the coverage detection unit further includes:

[0030] Two drive motors are respectively mounted on two sliding parts, and the output shafts of the two drive motors are respectively connected to one end of two rotating rollers through couplings;

[0031] Two elastic rods are respectively set on two fixed rollers and two rotating rollers. The outer walls of the two elastic rods are provided with elastic inner rollers, and the outer walls of the two elastic inner rollers are in contact with the inner wall of the covering belt.

[0032] In a preferred embodiment, the detection base is provided with a fixed bracket, the fixed bracket is provided with an electric push rod, the output end of the electric push rod is provided with a universal motor, the output shaft of the universal motor is connected to a screw bolt through a coupling, and the screw bolt is provided with a magnetic collar, the inside of the magnetic collar is provided with a locking bolt.

[0033] In a preferred embodiment, the flame retardant detection module includes:

[0034] A fixed frame is set on the detection base, and a fixed shaft is set on the fixed frame. A rotating plate is fixedly connected to the outer wall of the fixed shaft.

[0035] A power motor is mounted on a fixed frame, and the output shaft of the power motor is connected to one end of a fixed shaft via a coupling.

[0036] A movable plate base is set on a rotating plate platform. The movable plate base is provided with two shaft members, each of which is provided with a communicating air chamber. Each of the two communicating air chambers is provided with multiple flame-retardant nozzles.

[0037] In a preferred embodiment, the flame retardant detection module further includes:

[0038] A gas-retardant chamber is set on a rotating plate platform. Two conveying pipes are set on the gas-retardant chamber. A conveying pump is set at one end of each of the two conveying pipes. The two conveying pumps are respectively set on two interconnecting gas chambers.

[0039] Two active motors are mounted on a movable plate base, and the output shafts of the two active motors are respectively connected to one end of two shaft members through couplings;

[0040] The mounting frame is set on the movable plate base, and a motion motor is installed on the mounting frame. The output shaft of the motion motor is connected to a drive gear through a coupling.

[0041] A toothed plate is mounted on a rotating platform and meshes with a drive gear.

[0042] As can be seen from the above, the surge arrester performance testing device provided by the present invention has the function of improving the comprehensiveness of electrical performance testing. When conducting testing, the device can take into account unexpected situations caused by weather factors (such as foreign objects covering the surge arrester) and simulate actual working conditions by covering the surge arrester with foreign objects, so as to increase the testing effect of the device. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a surge arrester for use in a smart grid, as proposed in this invention.

[0044] Figure 2 This is a schematic diagram of the overall structure of a surge arrester performance testing device proposed in this invention;

[0045] Figure 3 This is a schematic diagram of the combined structure of the surge arrester body and the grounding frame of the surge arrester performance testing device proposed in this invention;

[0046] Figure 4 This is a schematic diagram of the coverage detection unit structure of a surge arrester performance testing device proposed in this invention;

[0047] Figure 5 This is a schematic diagram of the disassembled structure of the telescopic spring and guide rod of the surge arrester performance testing device proposed in this invention;

[0048] Figure 6 This is a schematic diagram of the fixed roller and rotating roller combination structure of a surge arrester performance testing device proposed in this invention;

[0049] Figure 7 This is a schematic diagram of the combined structure of a high-voltage power frame and a surge arrester body for a surge arrester performance testing device proposed in this invention;

[0050] Figure 8 This is a schematic diagram of the flame-retardant testing module structure of a surge arrester performance testing device proposed in this invention;

[0051] Figure 9 This is a schematic diagram of the combined structure of a flame-retardant nozzle and a connecting gas chamber in a surge arrester performance testing device proposed in this invention.

[0052] Figure 10 This is a schematic diagram of the combined structure of the drive gear and toothed plate of a surge arrester performance testing device proposed in this invention.

[0053] In the diagram: 1. Surge arrester body; 2. High-voltage end; 3. Grounding end; 4. Detection simulation chamber; 5. Cover detection unit; 501. Mounting frame; 502. Servo motor; 503. Covering strip; 504. Mounting shaft; 505. Stepper motor; 506. Linear guide rail; 507. Movable frame; 508. Electric telescopic rod; 509. Drive motor; 510. Telescopic spring; 511. Guide rod component; 512. Support plate; 513. Mounting plate component; 514. Fixing component; 515. Elastic inner roller; 516. Elastic rod; 517. Fixed roller; 518. Linear lead screw; 519. Sliding block component; 520. Sliding component; 521. Rotating roller; 6. Detection base; 7. 701. Flame-retardant testing module; 702. Rotating platform; 703. Movable plate base; 704. Flame-retardant nozzle; 705. Fixed frame; 706. Power motor; 707. Active motor; 708. Connecting air chamber; 709. Fixed shaft; 710. Flame-retardant chamber; 711. Delivery pipe; 712. Delivery pump; 713. Shaft component; 714. Gear plate; 715. Mounting bracket; 716. Motion motor; 717. Drive gear; 8. Grounding bracket; 9. Negative terminal; 10. Locking bolt; 11. Magnetic collar; 12. Rotary bolt component; 13. Universal motor; 14. Fixed bracket; 15. Electric push rod; 16. High-voltage bracket; 17. Positive terminal; 18. Bracket frame. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0055] The surge arrester performance testing device disclosed in this invention is mainly used in scenarios where only the influence of weather factors on the electrical performance of surge arresters is considered during simulation, without considering unexpected situations caused by weather factors (such as foreign objects covering the surge arrester), thus making the device's testing insufficient.

[0056] Reference Figure 1 A surge arrester for use in smart grids, comprising:

[0057] The surge arrester body 1 has a high-voltage terminal 2 at one end and a grounding terminal 3 at the other end.

[0058] Reference Figures 2-10 A surge arrester performance testing device, comprising a surge arrester as described above for use in smart grids, including:

[0059] The test simulation chamber 4 is equipped with a test base 6, and the test base 6 is equipped with two support frames 18.

[0060] High-voltage electrical frame 16 is mounted on one of the support frames 18, and a positive terminal 17 is provided on the high-voltage electrical frame 16.

[0061] Grounding frame 8 is mounted on another support frame 18, and a negative terminal 9 is provided on the grounding frame 8.

[0062] The coverage detection unit 5 is set on the detection base 6. The coverage detection unit 5 is used to simulate the actual working condition of foreign object coverage, thereby improving the comprehensiveness of electrical performance detection.

[0063] The flame retardant detection module 7 is mounted on the detection base 6. The flame retardant detection module 7 is used to prevent accidents during electrical performance testing and to avoid foreign objects covering the simulated combustion.

[0064] Device: Positive terminal 17 and negative terminal 9 are used to connect the positive and negative terminals of the electrical performance testing equipment during testing, so as to test the electrical performance of the surge arrester body 1.

[0065] Reference Figures 2-6 In a preferred embodiment, the coverage detection unit 5 includes:

[0066] Four mounting frames 501, each of the four mounting frames 501 is provided with a mounting shaft 504, and each of the four mounting shafts 504 is provided with a bracket plate 512;

[0067] Two servo motors 502 are mounted on two of the mounting frames 501, and the output shafts of the two servo motors 502 are connected to one end of two of the mounting shafts 504.

[0068] In this invention, the coverage detection unit 5 further includes:

[0069] Multiple guide rods 511 are respectively set on four support plates, and the same movable frame 507 is set on every two adjacent guide rods 511.

[0070] Two mounting plates 513 are respectively mounted on four movable frames 507, and each mounting plate 513 is equipped with a linear guide rail 506.

[0071] Multiple telescopic springs 510 are respectively disposed on the outside of multiple guide rods 511. One end of each of the multiple telescopic springs 510 is fixedly connected to the outer wall of four support plates 512, and the other end of each of the multiple telescopic springs 510 is fixedly connected to the outer wall of four movable frames 507.

[0072] In this invention, the coverage detection unit 5 further includes:

[0073] Two linear lead screws 518 are respectively mounted on two linear guide rails 506. The same slider 519 is mounted on both the linear lead screw 518 and the linear guide rail 506 on the same side.

[0074] Two sliders 520 are respectively mounted on two linear guides 506;

[0075] Two stepper motors 505 are respectively mounted on two linear guide rails 506, and the output shafts of the two stepper motors 505 are respectively connected to one end of two linear lead screws 518 through couplings.

[0076] In this invention, the coverage detection unit 5 further includes:

[0077] Four fixing parts 514 are respectively set on two slider parts 519 and two slider parts 520. The same electric telescopic rod 508 is set on each two adjacent fixing parts 514.

[0078] Two fixed rollers 517 are respectively mounted on two sliders 519;

[0079] Two rotating rollers 521 are respectively mounted on two sliding members 520. The two fixed rollers 517 and the two rotating rollers 521 are provided with the same covering strip 503.

[0080] In this invention, the coverage detection unit 5 further includes:

[0081] Two drive motors 509 are respectively mounted on two sliding parts 520, and the output shafts of the two drive motors 509 are respectively connected to one end of two rotating rollers 521 via couplings.

[0082] Two elastic rods 516 are respectively mounted on two fixed rollers 517 and two rotating rollers 521. Each elastic rod 516 has an elastic inner roller 515 on its outer wall. The outer walls of the two elastic inner rollers 515 are in contact with the inner wall of the covering belt 503.

[0083] Specifically, during testing, the servo motor 502 operates, driving the mounting shaft 504 and the support plate 512 to rotate. This causes the support plate 512 to move the guide rod frame, the movable frame 507, and the linear guide rail 506. The linear guide rail 506 then drives the fixed roller 517 and the rotating roller 521 to be positioned on both sides of the surge arrester body 1, so that the covering strip 503 covers the surge arrester body 1 for testing.

[0084] When foreign objects are covered at different positions, stepper motor 505 runs, which can drive linear screw 518 to rotate, and through linear screw 518 drive slider 519 to move, so as to further drive slider 520 to move on linear guide rail 506 to change the position of covering strip 503. Then servo motor 502 runs to cover the covering strip 503 on different positions of surge arrester body 1 to detect the electrical performance of surge arrester under different covering positions.

[0085] When the foreign object covers different areas, the drive motor 509 moves, and the drive motor 509 drives the rotating roller 521 to rotate, so as to relax the covering strip 503 on the rotating roller 521. At the same time as relaxing, the electric telescopic rod 508 runs, so that the electric telescopic rod 508 drives the sliding member 520 away from the sliding member 519, thereby tightening the relaxed covering strip 503 again to change the size of the covering strip 503. Then the servo motor 502 runs to cover the surge arrester body 1 with the covering strip 503 to detect the electrical performance of the surge arrester under different coverage areas.

[0086] In specific application scenarios, the coverage detection unit 5 is set in the surge arrester electrical performance testing stage. That is, when performing electrical performance testing, the coverage detection unit 5 can consider unexpected situations caused by weather factors (such as foreign objects covering the surge arrester), and simulate foreign object coverage testing through the covering strip 503 to simulate actual working conditions, thereby improving the comprehensiveness of the device's testing. During testing, the device can adjust the coverage position of the covering in a timely manner to detect the impact of different positions of foreign objects covering the surge arrester on the surge arrester's electrical performance. At the same time, the device can change the coverage range as needed to detect the impact of the range of foreign objects covering the surge arrester on the surge arrester's electrical performance, further increasing the comprehensiveness of the surge arrester's electrical performance testing, thereby increasing the effectiveness of the device.

[0087] It should be noted that the elastic rod 516 and the elastic inner roller 515 can provide a certain support effect for the covering belt 503 during use, so as to avoid excessive deformation of the covering material during foreign object covering simulation, which would cause the covering effect to differ from the predetermined effect, thus ensuring the accuracy of the test data.

[0088] Reference Figure 2 , Figure 3 and Figure 7 In a preferred embodiment, a fixed bracket 14 is provided on the detection base 6, an electric push rod 15 is provided on the fixed bracket 14, a universal motor 13 is provided at the output end of the electric push rod 15, the output shaft of the universal motor 13 is connected to a screw bolt 12 through a coupling, and a magnetic collar 11 is provided on the screw bolt 12, and a locking bolt 10 is provided inside the magnetic collar 11.

[0089] The electric push rod 15, the general motor 13 and the screw bolt 12 can set the locking bolt 10 at the grounding terminal 3 of the surge arrester body 1 during use, so as to fix the surge arrester body 1 on the grounding frame 8 and increase the detection stability.

[0090] When the locking bolt 10 is disassembled after testing, the magnetic collar 11 can attract the bolt inside the magnetic collar 11 to prevent it from being lost, and it is also convenient for use in subsequent tests.

[0091] Reference Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 10 In a preferred embodiment, the flame retardant detection module 7 includes:

[0092] A fixed frame 704 is set on the detection base 6. A fixed shaft 708 is set on the fixed frame 704. A rotating plate 701 is fixedly connected to the outer wall of the fixed shaft 708.

[0093] A power motor 705 is mounted on a fixed frame 704, and the output shaft of the power motor 705 is connected to one end of a fixed shaft 708 via a coupling.

[0094] The movable plate base 702 is mounted on the rotating plate platform 701. The movable plate base 702 is provided with two shaft members 712. Each shaft member 712 is provided with a communicating air chamber 707. Each communicating air chamber 707 is provided with multiple flame-retardant nozzles 703.

[0095] In this invention, the flame retardant detection module 7 further includes:

[0096] The gas-arresting chamber 709 is set on the rotating plate 701. The gas-arresting chamber 709 is provided with two conveying pipes 710. One end of each of the two conveying pipes 710 is provided with a conveying pump 711. The two conveying pumps 711 are respectively set on two connected gas chambers 707.

[0097] Two active motors 706 are mounted on the movable plate base 702. The output shafts of the two active motors 706 are connected to one end of two shaft members 712 respectively through couplings.

[0098] Mounting bracket 714 is mounted on movable plate base 702. Mounting bracket 714 is equipped with motion motor 715. The output shaft of motion motor 715 is connected to drive gear 716 through coupling.

[0099] Gear plate 713 is disposed on rotating plate 701 and meshes with drive gear 716.

[0100] Specifically, during the testing process, the power motor 705 drives the fixed shaft 708 to rotate, so that the rotating platform 701 is set parallel above the arrester body 1. At this time, as the testing proceeds, the delivery pump 711 and the active motor 706 operate. The delivery pump 711 delivers the flame-retardant gas inside the flame-retardant chamber 709 to the connecting gas chamber 707 through the delivery pipe 710, and sprays the flame-retardant gas onto the covering material through the flame-retardant nozzle 703 on the connecting gas chamber 707 to achieve flame retardancy. At the same time, when the flame-retardant gas is released, the active motor 706 drives the shaft 712 to reciprocate to increase the spray coverage and position of the flame-retardant gas and increase the flame-retardant effect.

[0101] When flame retardant is used, the motion motor 715 can drive the drive gear 716 to rotate. Since the drive gear 716 meshes with the toothed plate 713, it can drive the movable plate seat 702 to move, so as to adjust the position of flame retardant gas injection and release in real time according to the position and range of foreign objects.

[0102] In specific application scenarios, the flame-retardant detection module 7 is suitable for the detection of foreign object covering in surge arresters. That is, the flame-retardant detection module 7 can prevent accidents when performing foreign object covering detection. During the detection process, the device can continuously release flame-retardant gas at the foreign object covering detection area of ​​the surge arrester body 1 to prevent the covering material from being ignited by excessively high temperature during electrical performance testing. This avoids the simulation of combustion of foreign object covering, thereby increasing the detection safety of the device and preventing accidental combustion from damaging the device, thus increasing the service life of the device.

[0103] Working principle:

[0104] In use, the grounding terminal 3 of the surge arrester body 1 is placed on the grounding frame 8, and then the high-voltage terminal 2 is placed on the high-voltage frame 16. At this time, the electric push rod 15 and the general motor 13 are activated so that the screw bolt 12 and the magnetic collar 11 will place the locking bolt 10 on the grounding terminal 3 to fix the surge arrester body 1. Then, the positive and negative terminals of the electrical performance testing equipment are connected to the positive terminal 17 and the negative terminal 9 respectively, and the testing base 6 is moved into the testing simulation chamber 4 for testing.

[0105] During testing, the servo motor 502 runs, driving the mounting shaft 504 and the support plate 512 to rotate. This causes the support plate 512 to move the guide rod frame, the movable frame 507, and the linear guide rail 506. The linear guide rail 506 then drives the fixed roller 517 and the rotating roller 521 to be positioned on both sides of the surge arrester body 1, so that the covering strip 503 covers the surge arrester body 1 for testing.

[0106] When foreign objects are covered at different positions, stepper motor 505 runs, which can drive linear screw 518 to rotate, and through linear screw 518 drive slider 519 to move, so as to further drive slider 520 to move on linear guide rail 506 to change the position of covering strip 503. Then servo motor 502 runs to cover the covering strip 503 on different positions of surge arrester body 1 to detect the electrical performance of surge arrester under different covering positions.

[0107] When the foreign object covers different areas, the drive motor 509 moves, and the drive motor 509 drives the rotating roller 521 to rotate, so as to relax the covering strip 503 on the rotating roller 521. At the same time as relaxing, the electric telescopic rod 508 runs, so that the electric telescopic rod 508 drives the sliding member 520 away from the sliding member 519, thereby tightening the relaxed covering strip 503 again to change the size of the covering strip 503. Then the servo motor 502 runs to cover the surge arrester body 1 with the covering strip 503 to detect the electrical performance of the surge arrester under different coverage areas.

[0108] During the testing process, the power motor 705 drives the fixed shaft 708 to rotate, so that the rotating platform 701 is set parallel above the arrester body 1. At this time, as the testing proceeds, the delivery pump 711 and the active motor 706 operate. The delivery pump 711 delivers the flame-retardant gas inside the flame-retardant chamber 709 to the connecting gas chamber 707 through the delivery pipe 710, and sprays the flame-retardant gas onto the covering material through the flame-retardant nozzle 703 on the connecting gas chamber 707 to achieve flame retardancy. At the same time, when the flame-retardant gas is released, the active motor 706 drives the shaft 712 to reciprocate to increase the spray coverage and position of the flame-retardant gas and increase the flame-retardant effect.

[0109] When flame retardant is applied, the motion motor 715 can drive the drive gear 716 to rotate. Since the drive gear 716 meshes with the toothed plate 713, it can drive the movable plate base 702 to move, so as to adjust the position of flame retardant gas injection and release in real time according to the position and range of foreign objects.

[0110] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surge arrester performance testing device, characterized in that, include: The test simulation chamber (4) is provided with a test base (6), and the test base (6) is provided with two support frames (18). A high-voltage electrical frame (16) is mounted on one of the support frames (18), and a positive terminal (17) is provided on the high-voltage electrical frame (16). Grounding frame (8) is mounted on another support frame (18), and a negative terminal (9) is provided on the grounding frame (8). Coverage detection unit (5) is set on detection base (6) and is used to simulate the actual working condition of foreign object coverage; The flame retardant detection module (7) is mounted on the detection base (6); The coverage detection unit (5) includes: Four mounting frames (501), each of the four mounting frames (501) is provided with a mounting shaft (504), and each of the four mounting shafts (504) is provided with a bracket plate (512); Two servo motors (502) are mounted on two of the mounting frames (501), and the output shafts of the two servo motors (502) are connected to one end of two of the mounting shafts (504); The coverage detection unit (5) further includes: Multiple guide rods (511) are respectively set on four support plates, and the same movable frame (507) is set on every two adjacent guide rods (511). Two mounting plates (513) are respectively mounted on four movable frames (507), and each of the two mounting plates (513) is provided with a linear guide rail (506). Multiple telescopic springs (510) are respectively disposed on the outside of multiple guide rods (511). One end of each of the multiple telescopic springs (510) is fixedly connected to the outer wall of four support plates (512), and the other end of each of the multiple telescopic springs (510) is fixedly connected to the outer wall of four movable frames (507). The coverage detection unit (5) further includes: Two linear lead screws (518) are respectively mounted on two linear guides (506). The linear lead screws (518) and the linear guides (506) on the same side are both provided with the same slider (519). Two sliders (520) are respectively mounted on two linear guides (506); Two stepper motors (505) are respectively mounted on two linear guide rails (506), and the output shafts of the two stepper motors (505) are respectively connected to one end of two linear lead screws (518) through couplings; The coverage detection unit (5) further includes: Four fixing members (514) are respectively set on two slider members (519) and two slider members (520). Each pair of adjacent fixing members (514) is provided with the same electric telescopic rod (508). Two fixed rollers (517) are respectively mounted on two sliders (519); Two rotating rollers (521) are respectively disposed on two sliding members (520), and the two fixed rollers (517) and the two rotating rollers (521) are provided with the same covering strip (503).

2. The surge arrester performance testing device according to claim 1, characterized in that, The coverage detection unit (5) further includes: Two drive motors (509) are respectively mounted on two sliding parts (520), and the output shafts of the two drive motors (509) are respectively connected to one end of two rotating rollers (521) through couplings; Two elastic rods (516) are respectively set on two fixed rollers (517) and two rotating rollers (521). The outer walls of the two elastic rods (516) are provided with elastic inner rollers (515). The outer walls of the two elastic inner rollers (515) are in contact with the inner wall of the covering belt (503).

3. The surge arrester performance testing device according to claim 1, characterized in that, The detection base (6) is provided with a fixed bracket (14), and an electric push rod (15) is provided on the fixed bracket (14). A general motor (13) is provided at the output end of the electric push rod (15). The output shaft of the general motor (13) is connected to a screw bolt (12) through a coupling. A magnetic collar (11) is provided on the screw bolt (12), and a locking bolt (10) is provided inside the magnetic collar (11).

4. The surge arrester performance testing device according to claim 1, characterized in that, The flame retardant detection module (7) includes: A fixed frame (704) is provided on the detection base (6). A fixed shaft (708) is provided on the fixed frame (704). A rotating plate (701) is fixedly connected to the outer wall of the fixed shaft (708). A power motor (705) is mounted on a fixed frame (704), and the output shaft of the power motor (705) is connected to one end of a fixed shaft (708) via a coupling. Movable plate base (702) is set on rotating plate platform (701). The movable plate base (702) is provided with two shaft members (712). Each shaft member (712) is provided with a communicating air chamber (707). Each communicating air chamber (707) is provided with multiple flame-retardant nozzles (703).

5. The surge arrester performance testing device according to claim 4, characterized in that, The flame retardant detection module (7) also includes: A flame-retardant chamber (709) is provided on a rotating plate (701). Two delivery pipes (710) are provided on the flame-retardant chamber (709). A delivery pump (711) is provided at one end of each of the two delivery pipes (710). The two delivery pumps (711) are respectively provided on two interconnecting gas chambers (707). Two active motors (706) are mounted on a movable plate base (702), and the output shafts of the two active motors (706) are connected to one end of two shaft members (712) respectively through couplings; Mounting bracket (714) is mounted on movable plate base (702). A motion motor (715) is mounted on the mounting bracket (714). The output shaft of the motion motor (715) is connected to a drive gear (716) through a coupling. A toothed plate (713) is disposed on a rotating platform (701) and meshes with a drive gear (716).

6. A surge arrester for use in a smart grid, wherein the surge arrester performance testing device according to any one of claims 1-5 is used for testing, characterized in that, include: The surge arrester body (1) has a high-voltage terminal (2) at one end and a grounding terminal (3) at the other end.

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