Performance test device for power distribution system test and control method

Abstract

The invention relates to the technical field of electric power tests, and discloses a performance test device for a power distribution system test and a control method, the performance test device comprises a loading assembly, a vibration assembly, a vibration assembly and a blowing assembly, the loading assembly comprises a tool table for loading tested equipment and a rotation driving mechanism; the vibration assembly is used for driving the tool table to vibrate. The raining assembly comprises a raining pipe arranged above the tool table in a circular arc shape, a plurality of raining nozzles, a swing driving mechanism and a water supply system, the water spraying directions of the multiple raining nozzles all face the circular arc center of the raining pipe, and the swing driving mechanism is used for driving the raining pipe to swing; the air blowing assembly comprises an air knife and an air blowing system, and the air knife is arranged beside the tool table. According to the invention, different use scenes of the tested equipment can be simulated, the environment simulation is vivid, and the comprehensive protection performance of the power distribution equipment in outdoor and special application scenes can be truly and comprehensively evaluated.

Description

Technical Field

[0001] This invention relates to the field of power testing technology, and in particular to a performance testing device and control method for power distribution system testing. Background Technology

[0002] For outdoor power distribution equipment such as transformers and distribution cabinets in existing power distribution systems, the protection level of their enclosures is crucial to ensuring long-term reliable operation. If water enters the equipment due to seal failure, it will directly cause an electrical short circuit, leading to damage to core components. Therefore, protective performance tests, such as rain tests, must be conducted on the equipment before it leaves the factory.

[0003] However, current conventional rain testing equipment can only simulate static or fixed-angle spray environments, which is significantly different from the complex working conditions actually faced by the equipment. Specifically, this manifests in the following technical defects: The inability to simulate the coupling effect of wind and rain: In real outdoor environments, rain is often accompanied by strong winds, and the combined effect of wind and rain forces rainwater to impact equipment gaps with higher pressure and at varying angles. Existing devices cannot reproduce this dynamic "wind and rain coupling" effect, resulting in insufficient waterproof performance testing.

[0004] Lack of wind resistance assessment capability: In addition to affecting the path of rainwater intrusion, strong winds also exert continuous mechanical loads and vibrations on the equipment structure. Existing rain testing equipment is completely incapable of detecting and assessing this type of wind resistance performance.

[0005] The vibration factors under special operating environments are not considered: For power distribution equipment installed on mobile platforms such as ships, it must continuously withstand multidimensional vibrations and impacts from the platform itself during operation. Existing test equipment cannot simulate this vibration environment, and therefore cannot assess the structural stability and electrical connection reliability of the equipment under such harsh conditions.

[0006] In summary, existing testing technologies have limitations such as limited scenario coverage and distorted environmental simulation, making it difficult to provide a true and comprehensive evaluation of the overall protection performance of power distribution equipment in outdoor and special application scenarios. Summary of the Invention The purpose of this invention is to provide a performance testing device and control method for power distribution system testing, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0007] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention provides a performance testing apparatus for power distribution system testing, comprising: The loading assembly includes a tooling table for loading the device under test and a rotary drive mechanism for driving the tooling table to rotate about a vertical axis; A vibration assembly is used to drive the tooling table to vibrate; The rain shower assembly includes a rain shower pipe arranged in an arc shape above the tooling table, a plurality of rain shower nozzles spaced apart along the rain shower pipe, a swing drive mechanism connected to the rain shower pipe, and a water supply system for supplying water to the rain shower pipe. The spray direction of the plurality of rain shower nozzles is all set towards the center of the arc of the rain shower pipe. The two ends of the rain shower pipe are spaced apart on both sides of the tooling table in a horizontal direction. The swing drive mechanism is used to drive the rain shower pipe to swing around the horizontal connecting line between the two ends of the rain shower pipe. A blowing assembly includes at least one air knife and a blowing system. The air knife is vertically arranged beside the tooling table, and the blowing direction of the air knife is towards the device under test. The blowing system is used to provide high-pressure gas to at least one of the air knives.

[0008] The beneficial effects of the performance testing device of the present invention are: During the test, the device under test (DUT) is fixed on a fixture. A water supply system supplies water to the rain hoses, controlling multiple rain nozzles to spray water. Simultaneously, the rain hoses oscillate back and forth, and the fixture rotates the DUT, simulating rain spray from different directions. A blowing system provides high-pressure gas to the air knife, controlling the air knife to blow on the DUT, simulating wind and rain weather and reproducing the dynamic "wind and rain coupling" effect. This allows for a more thorough waterproof performance test and also allows for the detection of the device's wind resistance. A vibration assembly drives the fixture to vibrate, simulating different vibration environments and testing the structural stability and electrical connection reliability of the device under harsh operating conditions.

[0009] As a further improvement to the above technical solution, the rotary drive mechanism includes a rotary table and a rotary drive structure that drives the rotary table to rotate, and the vibration component is disposed between the bottom of the tooling table and the top of the rotary table.

[0010] As a further improvement to the above technical solution, the vibration assembly includes a first linear actuator and a plurality of second linear actuators. The telescopic upper end of the first linear actuator is hinged to the bottom center of the tooling table, and the fixed lower end of the first linear actuator is fixedly connected to the top of the rotary table. The plurality of second linear actuators are respectively disposed on both sides of the first linear actuator. The telescopic upper end of the second linear actuator is hinged to the bottom of the tooling table, and the fixed lower end of the second linear actuator is slidably connected to the top of the rotary table.

[0011] As a further improvement to the above technical solution, the air knife is connected to a swishing mechanism, which is used to drive the air knife to swish back and forth around a vertical axis, so as to control the air knife to swish and swirl to clean the device under test.

[0012] As a further improvement to the above technical solution, the air knife is connected to a purging and lifting mechanism, which is used to control the lifting and lowering of the air knife.

[0013] As a further improvement to the above technical solution, the purging and lifting mechanism includes a purging and lifting frame and a purging and lifting drive component that drives the purging and lifting frame to move up and down reciprocally. The upper and lower ends of the air knife are rotatably connected to the purging and lifting frame. The purging and swinging mechanism includes a purging and swinging drive component installed on the purging and lifting frame. The purging and swinging drive component is tractively connected to one end of the air knife.

[0014] As a further improvement to the above technical solution, multiple air knives are provided, and the multiple air knives are arranged circumferentially at intervals on the side of the tooling table.

[0015] As a further improvement to the above technical solution, the rain shower assembly also includes a rain shower lifting mechanism, which is used to drive the rain shower pipe to move up and down.

[0016] As a further improvement to the above technical solution, the rain shower lifting mechanism includes two rain shower lifting structures respectively disposed on both sides of the tooling table. The rain shower lifting structure includes a fixed frame, a lifting seat that is slidably mounted on the fixed frame, and a rain shower lifting drive component that drives the lifting seat to move up and down reciprocally. The swing drive mechanism includes two rain shower swing drive components respectively mounted on the two lifting seats, and the two rain shower swing drive components are respectively connected to the two ends of the rain shower pipe.

[0017] The present invention also proposes a performance test control method for power distribution system testing, applicable to the aforementioned performance test device, the control method comprising: The device to be tested is mounted on top of the tooling table according to the actual installation method; Multiple rain nozzles are controlled to spray water onto the device under test, while the rain pipe is controlled to swing back and forth according to a preset swing amplitude and preset swing frequency. The tooling table is driven to vibrate according to a preset frequency and preset amplitude; The tooling table is controlled to rotate according to a preset rotation speed; The air knife is used to purge the device under test according to the preset air pressure.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1This is a schematic diagram of an embodiment of the performance testing device provided by the present invention; Figure 2 This is a top view schematic diagram of an embodiment of the performance testing device provided by the present invention, showing the air knife blowing process. Figure 3 This is a flowchart of an embodiment of the control method provided by the present invention; Icon labels: Loading assembly 100; tooling table 110; rotary table 120; vibration guide rail 121; rotary drive structure 130; Vibration assembly 200; first linear actuator 210; second linear actuator 220; Rain shower assembly 300; rain shower pipe 310; rain shower head 320; mounting bracket 330; lifting base 340; rain shower lifting drive component 350; rain shower swing drive component 360; Blowing assembly 400; air knife 410; blowing and lifting frame 420; blowing and lifting drive component 430; blowing and swinging drive component 440; 500 devices under test; Rack size 600. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0025] Reference Figure 1 and Figure 2 The performance testing apparatus of the present invention is illustrated in the following embodiments: The performance testing apparatus of the present invention includes: a loading component 100, a vibration component 200, a rain component 300, and a blowing component 400.

[0026] In this embodiment, the loading assembly 100 includes a fixture table 110 and a rotary drive mechanism. The fixture table 110 serves as the actual mounting base for the power distribution equipment. During testing, the device under test 500 is loaded onto the top of the fixture table 110 according to the set installation method. The rotary drive mechanism drives the fixture table 110 to rotate around a vertical axis, thereby rotating the device under test 500.

[0027] In this embodiment, the vibration component 200 is used to drive the tooling table 110 to vibrate, so as to simulate the device under test 500 in different oscillation scenarios.

[0028] Specifically, the rotary drive mechanism of this embodiment includes a rotary table 120 and a rotary drive structure 130 that drives the rotary table 120 to rotate. The rotary table 120 is rotatably mounted on the frame 600. The rotary drive structure 130 uses a waterproof motor to avoid water affecting the operation of the motor. The vibration component 200 is located between the bottom of the tooling table 110 and the top of the rotary table 120. When the rotary table 120 rotates, it drives the vibration component 200 and the tooling table 110 to rotate together.

[0029] The vibration assembly 200 of this embodiment includes a first linear actuator 210 and a plurality of second linear actuators 220. The first linear actuator 210 and the second linear actuators 220 are both vertically arranged. The telescopic upper end of the first linear actuator 210 is hinged to the bottom center of the tooling table 110, and the fixed lower end of the first linear actuator 210 is fixedly connected to the top of the rotary table 120. The tooling table 110 can swing freely around the upper end of the first linear actuator 210. The plurality of second linear actuators 220 are respectively arranged on the left and right sides of the first linear actuator 210. The telescopic upper end of the second linear actuator 220 is hinged to the bottom of the tooling table 110, and the fixed lower end of the second linear actuator 220 is slidably connected to the top of the rotary table 120.

[0030] In this embodiment, the tooling table 110 has two vibration modes. The first mode involves the first linear actuator 210 and the second linear actuator 220 synchronously driving the tooling table 110 to move up and down at high frequency, achieving a reciprocating oscillation effect, mainly used to simulate bouncing oscillation conditions. The second mode involves the first linear actuator 210 not operating, but controlling the second linear actuators 220 on both sides to move up and down, driving the tooling table 110 to swing up and down around the center position at high frequency, achieving a reciprocating oscillation effect, mainly used to simulate oscillating oscillation conditions. In actual tests, different vibration modes can be selected according to different needs.

[0031] The top surface of the rotary table 120 in this embodiment is provided with a left-right extending vibration guide rail 121, and the second linear actuator 220 slides in cooperation with the vibration guide rail 121.

[0032] The rain shower assembly 300 in this embodiment includes a rain shower pipe 310, multiple rain shower nozzles 320, a swing drive mechanism, and a water supply system.

[0033] The rain pipe 310 is arc-shaped and is located above the tooling table 110. The two ends of the rain pipe 310 are spaced apart on the left and right sides of the tooling table 110 in the left and right directions. It can be understood that the rain pipe 310 is arc-shaped above the device under test 500 and covers the device under test 500.

[0034] Multiple shower heads 320 are arranged at intervals along the shower pipe 310, and the spray direction of the multiple shower heads 320 is all directed towards the center of the arc of the shower pipe 310, which is equivalent to the multiple shower heads 320 spraying water towards the device under test 500. The water supply system is connected to the shower pipe 310, and the water supply system supplies water to the shower pipe 310 and distributes the water to the multiple shower heads 320 through the shower pipe 310. The water supply system is equipped with water valves for controlling water pressure and flow rate to control the water pressure and water volume of the spray.

[0035] In this embodiment, the swing drive mechanism is connected to the rain pipe 310. The swing drive mechanism is used to drive the rain pipe 310 to swing around the horizontal connecting line between the two ends of the rain pipe 310. It can be understood that after the rain pipe 310 covers the device under test 500, it can swing around the device under test 500 to control the rain nozzle 320 to spray the device under test 500 from different directions.

[0036] The blowing assembly 400 of this embodiment includes at least one air knife 410 and a blowing system. The air knife 410 is vertically arranged on the side of the tooling table 110, and the blowing direction of the air knife 410 is towards the device under test 500. The blowing system is used to provide high-pressure gas to the air knife 410, and the blowing system has a valve for controlling the air pressure and air volume.

[0037] During the test, the device under test 500 is fixed on the fixture 110. The water supply system supplies water to the rain pipe 310, controlling multiple rain nozzles 320 to spray water. Simultaneously, the rain pipe 310 oscillates back and forth, and the fixture 110 drives the device under test 500 to rotate, thus simulating rain spraying from different directions. The blowing system provides high-pressure gas to the air knife 410, controlling the air knife 410 to blow on the device under test 500, simulating wind and rain weather, reproducing the dynamic "wind and rain coupling" effect, thereby making the waterproof performance test more thorough and also testing the wind resistance performance of the equipment. The vibration component 200 drives the fixture 110 to vibrate to simulate different vibration environments and test the structural stability and electrical connection reliability of the equipment under harsh working conditions.

[0038] Furthermore, in this embodiment, the air knife 410 is connected to a swishing mechanism, which drives the air knife 410 to oscillate back and forth around a vertical axis, thereby controlling the air knife 410 to oscillate and swirl against the device under test 500. Additionally, in this embodiment, the air knife 410 is connected to a swishing lifting mechanism, which controls the raising and lowering of the air knife 410 to more realistically simulate the wind conditions experienced by the device under different severe weather conditions.

[0039] Specifically, the purging and lifting mechanism of this embodiment includes a purging and lifting frame 420 and a purging and lifting drive component 430 that drives the purging and lifting frame 420 to move up and down reciprocally. The purging and lifting frame 420 is slidably mounted on the frame 600. The purging and lifting drive component 430 adopts a linear drive structure such as a linear motor or a cylinder.

[0040] In this embodiment, the upper and lower ends of the air knife 410 are rotatably connected to the blowing and lifting frame 420. The blowing and swinging mechanism includes a blowing and swinging drive component 440 installed on the blowing and lifting frame 420. The blowing and swinging drive component 440 is connected to one end of the air knife 410. The blowing and swinging drive component 440 uses a waterproof motor.

[0041] Furthermore, such as Figure 2 As shown, this embodiment has multiple air knives 410, which are arranged circumferentially on the side of the tooling table 110, so that the device under test 500 can be blown from different directions around it.

[0042] The rain shower assembly 300 of this embodiment also includes a rain shower lifting mechanism, which is used to move the rain shower pipe 310 up and down to adapt to the test equipment 500 at different heights. At the same time, during spraying, it can also move the rain shower pipe 310 up and down to make the spraying effect more realistic and simulate the real outdoor environment.

[0043] The rain shower lifting mechanism of this embodiment includes two rain shower lifting structures respectively located on both sides of the tooling table 110. The rain shower lifting structure includes a fixed frame 330 fixedly installed on the frame 600, a lifting seat 340 slidably installed on the fixed frame 330, and a rain shower lifting drive component 350 that drives the lifting seat 340 to move up and down reciprocally. The rain shower lifting drive component 350 adopts a linear drive structure such as a linear motor or a cylinder.

[0044] The swing drive mechanism includes two rain swing drive components 360 respectively installed on two lifting seats 340. The two rain swing drive components 360 are respectively connected to both ends of the rain pipe 310. The rain swing drive components 360 are waterproof motors.

[0045] This invention also proposes a performance test control method for power distribution system testing, applicable to the aforementioned performance test apparatus, such as... Figure 3 As shown, the control method in this embodiment includes: Step S100: Mount the device under test 500 on top of the tooling table 110 according to the actual installation method; Step S200: Control multiple rain nozzles 320 to spray water onto the device under test 500, and at the same time control the rain pipe 310 to swing back and forth according to the preset swing amplitude and preset swing frequency. Step S300: Drive the tooling table 110 to vibrate according to the preset frequency and preset amplitude; Step S400: Control the tooling table 110 to rotate according to the preset rotation speed; Step S500: The tested equipment 500 is purged by controlling the air knife 410 according to the preset air pressure.

[0046] In step S100, the device under test 500 is mounted on the top of the tooling table 110 according to the set installation method, and is generally fixed by bolts.

[0047] In step S200, the water supply system provides the set water pressure and water volume to the rain pipe 310, and then distributes the water to multiple rain nozzles 320 through the rain pipe 310. The rain pipe 310 is driven to swing by the rain swing drive components 360 on the left and right sides. At the same time, the rain lifting drive component 350 drives the lifting seat 340 to move up and down to move the rain pipe 310 up and down, simulating rain spraying from different directions, and adapting to the test equipment 500 at different heights.

[0048] In step S300, different vibration modes are selected according to the actual test conditions. One vibration mode is to control the first linear actuator 210 and the second linear actuator 220 to drive the fixture table 110 to move up and down at high frequency, so as to achieve the effect of up and down reciprocating oscillation and simulate the jumping oscillation condition. Another mode is to control the first linear actuator 210 to not run, and control the second linear actuators 220 on the left and right sides to move up and down reciprocally, so as to drive the fixture table 110 to swing up and down at high frequency around the center position, simulating the swinging oscillation condition.

[0049] In step S400, by controlling the rotation of the rotary table 120, the vibration component 200 and the tooling table 110 are driven to rotate together, so as to couple with the swing blowing and swing lifting spray, which can simulate a more realistic and comprehensive real scene.

[0050] In step S500, high-pressure gas with a set pressure and flow rate is provided to the air knife 410 through the blowing system. At the same time, the air knife 410 is driven to swing back and forth around the vertical axis through the purging swing mechanism to control the air knife 410 to swing and blow on the device under test 500. The air knife 410 can also be raised and lowered through the purging lifting mechanism to more realistically simulate the wind experienced by the device under different severe weather conditions.

[0051] During the experiment, corresponding steps can be executed according to different simulated scenarios. If steps S200, S300, S400, and S500 are executed simultaneously, the vibration condition of the device under test 500 in windy and rainy weather is simulated. If step S200 is executed alone, the static scenario of the device under test 500 in rainy weather is simulated; if steps S200 and S400 are executed alone, the rotational dynamic scenario of the device under test 500 in rainy weather is simulated; if steps S200 and S300 are executed alone, the vibrational dynamic scenario of the device under test 500 in rainy weather is simulated; if steps S200 and S500 are executed alone, the static scenario of the device under test 500 in windy and rainy weather is simulated; if step S300 is executed alone, then… The device under test (DUT) 500 is simulated in an oscillating dynamic scenario. If steps S300 and S400 are executed alone, the DUT 500 is simulated in an oscillating and rotating dynamic scenario. If step S500 is executed alone, the DUT 500 is simulated in a static scenario in a wind field. If steps S400 and S500 are executed alone, the DUT 500 is simulated in a rotating dynamic scenario in a wind field. If steps S300 and S500 are executed alone, the DUT 500 is simulated in an oscillating dynamic scenario in a wind field.

[0052] Furthermore, this invention can simulate the tested device 500 in different usage scenarios, and the environmental simulation is realistic, enabling a true and comprehensive evaluation of the overall protection performance of power distribution equipment in outdoor and special application scenarios.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A performance testing device for testing power distribution systems, characterized in that, include: The loading assembly (100) includes a tooling table (110) for loading the device under test (500) and a rotary drive mechanism for driving the tooling table (110) to rotate about a vertical axis. A vibration assembly (200) is used to drive the tooling table (110) to vibrate; The rain shower assembly (300) includes a rain shower pipe (310) arranged in an arc shape above the tooling table (110), a plurality of rain shower nozzles (320) arranged at intervals along the rain shower pipe (310), a swing drive mechanism connected to the rain shower pipe (310) and a water supply system for supplying water to the rain shower pipe (310). The spray direction of the plurality of rain shower nozzles (320) is all arranged towards the center of the arc of the rain shower pipe (310). The two ends of the rain shower pipe (310) are arranged at intervals along the horizontal direction on both sides of the tooling table (110). The swing drive mechanism is used to drive the rain shower pipe (310) to swing around the horizontal connecting line between the two ends of the rain shower pipe (310). The blowing assembly (400) includes at least one air knife (410) and a blowing system. The air knife (410) is vertically arranged on the side of the tooling table (110). The blowing direction of the air knife (410) is towards the device under test (500). The blowing system is used to provide high-pressure gas to at least one of the air knives (410).

2. The performance testing apparatus according to claim 1, characterized in that: The rotary drive mechanism includes a rotary table (120) and a rotary drive structure (130) that drives the rotary table (120) to rotate. The vibration component (200) is located between the bottom of the tooling table (110) and the top of the rotary table (120).

3. The performance testing apparatus according to claim 2, characterized in that: The vibration assembly (200) includes a first linear actuator (210) and a plurality of second linear actuators (220). The telescopic upper end of the first linear actuator (210) is hinged to the bottom center of the tooling table (110), and the fixed lower end of the first linear actuator (210) is fixedly connected to the top of the rotary table (120). The plurality of second linear actuators (220) are respectively disposed on both sides of the first linear actuator (210). The telescopic upper end of the second linear actuator (220) is hinged to the bottom of the tooling table (110), and the fixed lower end of the second linear actuator (220) is slidably connected to the top of the rotary table (120).

4. The performance testing apparatus according to claim 1, characterized in that: The air knife (410) is connected to a swishing mechanism, which is used to drive the air knife (410) to swish back and forth around a vertical axis, so as to control the air knife (410) to swish and swirl to clean the device under test (500).

5. The performance testing apparatus according to claim 4, characterized in that: The air knife (410) is connected to a purging and lifting mechanism, which is used to control the air knife (410) to rise and fall.

6. The performance testing apparatus according to claim 5, characterized in that: The purging and lifting mechanism includes a purging and lifting frame (420) and a purging and lifting drive component (430) that drives the purging and lifting frame (420) to move up and down reciprocally. The upper and lower ends of the air knife (410) are rotatably connected to the purging and lifting frame (420). The purging and swinging mechanism includes a purging and swinging drive component (440) installed on the purging and lifting frame (420). The purging and swinging drive component (440) is drively connected to one end of the air knife (410).

7. The performance testing apparatus according to claim 5, characterized in that: Multiple air knives (410) are provided, and multiple air knives (410) are arranged circumferentially at intervals on the side of the tooling table (110).

8. The performance testing apparatus according to claim 1, characterized in that: The rain shower assembly (300) also includes a rain shower lifting mechanism, which is used to drive the rain shower pipe (310) to move up and down.

9. The performance testing apparatus according to claim 8, characterized in that: The rain shower lifting mechanism includes two rain shower lifting structures respectively located on both sides of the tooling table (110). The rain shower lifting structure includes a fixed frame (330), a lifting seat (340) slidably mounted on the fixed frame (330), and a rain shower lifting drive component (350) that drives the lifting seat (340) to move up and down reciprocally. The swing drive mechanism includes two rain shower swing drive components (360) respectively mounted on the two lifting seats (340). The two rain shower swing drive components (360) are respectively connected to the two ends of the rain shower pipe (310).

10. A performance test control method for power distribution system testing, characterized in that, The control method, applicable to the performance testing apparatus as described in any one of claims 1 to 9, comprises: The device under test (500) is mounted on top of the tooling table (110) according to the actual installation method; Multiple rain nozzles (320) are controlled to spray water onto the device under test (500), while the rain pipe (310) is controlled to swing back and forth according to a preset swing amplitude and a preset swing frequency. The tooling table (110) is driven to vibrate according to a preset frequency and preset amplitude; The tooling table (110) is controlled to rotate according to a preset rotation speed; The air knife (410) is controlled by a preset air pressure to purge the device under test (500).

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