Photovoltaic power generation grid-connected performance test equipment

Abstract

The invention provides photovoltaic power generation grid-connected performance test equipment, and relates to the technical field of electrical performance test.The photovoltaic power generation grid-connected performance test equipment is mainly characterized in that an EL detector on a detection table is used for conducting voltage and current testing on a photovoltaic assembly after contact, and a clamping assembly for limiting and fixing the photovoltaic assembly is arranged at the upper end of the detection table; according to the size self-adaptive adjustment of different photovoltaic modules, positioning assemblies for guiding and positioning the upper end clamping assembly and the photovoltaic modules are arranged on the two sides of the detection table, the positions of corresponding positioning blocks are kept in the middle of the EL detector, the middle positions of the photovoltaic modules are kept to be in contact with the EL detector, and the detection accuracy is improved. According to the structure of the part, sufficient contact between the EL detector and the photovoltaic module to be detected is guaranteed, the photovoltaic modules of different sizes always keep direct contact between the middle areas and the EL detector, after the EL detector and the photovoltaic modules are connected, voltage and current detection is carried out, monitoring data are fed back to a system terminal, and manual adjustment time is saved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical performance testing, and in particular to a photovoltaic power generation grid-connected performance testing device. Background Art

[0002] Photovoltaic power grid connection refers to the process of converting the direct current output of the solar cell array into sinusoidal alternating current with the same frequency and phase as the grid voltage through an inverter, and connecting it to the grid for distribution, transmission and use. The technology and system components involved in this process include solar cell arrays, DC / DC converters, DC / AC inverters and other components. Its purpose is to connect decentralized photovoltaic systems to a centralized grid to achieve efficient use and distribution of electrical energy.

[0003] In the performance test of photovoltaic power generation grid connection, electrical performance detection is more important. The performance of photovoltaic modules is evaluated, including the measurement of open circuit voltage, short circuit current, maximum power point voltage and current and other parameters, which are carried out through photoelectric conversion efficiency meter and programmable electronic load. At present, the electrical performance detection method of photovoltaic power generation grid connection is mainly the detection of photovoltaic modules. The electrical performance test of photovoltaic modules mainly includes the following aspects: Current-voltage (IV) characteristic test: By testing the current output of the module at different voltages, the IV characteristic curve is drawn to evaluate the key parameters of the module such as open circuit voltage, short circuit current, maximum power point voltage, maximum power point current. These parameters directly reflect the power generation capacity and conversion efficiency of the module. When using EL detector for photovoltaic module detection, the first thing to do is to set up the equipment, including connecting the power supply of the EL detector to the module to ensure the stability of the power supply. It is also necessary to set the relevant parameters of the EL detector according to the type and specifications of the photovoltaic module, such as detection voltage, current, exposure time, etc. The settings of these parameters should be determined according to the specific test requirements and the characteristics of the PV modules to ensure the accuracy and effectiveness of the test. During the detection operation phase, the EL detector needs to be placed on the back of the PV module or a designated position to ensure that the detection probe is in close contact with the surface of the PV module to avoid air gaps to ensure the reliability of the test results.

[0004] However, due to different models and power generation requirements, the sizes of photovoltaic modules are different. When contacting with the EL detector for detection, the position of the photovoltaic module may need to be adjusted due to the size of the photovoltaic module to keep the middle area of ​​the photovoltaic module in contact with the EL detector. This process requires manual adjustment, which is inconvenient. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a photovoltaic power generation grid-connected performance testing device to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The device mainly uses the EL detector on the detection table to test the voltage and current of the photovoltaic module after contact. A clamping component for limiting and fixing the photovoltaic module is provided at the upper end of the detection table, which is adaptively adjusted according to the sizes of different photovoltaic modules. At the same time, there are positioning components on both sides of the detection table for guiding and positioning the upper clamping component and the photovoltaic module. The position of the corresponding positioning block is maintained in the middle position of the EL detector to keep the middle position of the photovoltaic module in contact with the EL detector. This part of the structure is to ensure that the EL detector has sufficient contact with the photovoltaic module to be tested. Photovoltaic modules of different sizes always keep the middle area in direct contact with the EL detector. After connecting the EL detector and the photovoltaic module, voltage and current detection is performed, and the monitoring data is fed back to the system terminal, saving time for manual adjustment and avoiding the problem of insufficient contact.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a photovoltaic power generation grid-connected performance test equipment, including a base frame, a test platform is fixed on the top of the base frame, and an EL detector is installed in the middle of the test platform, the detection end of the EL detector is flush with the test platform, and movable stations are provided on both sides of the test platform. A clamping assembly is provided on the top of the test platform, and the clamping assembly includes two groups of side frames, and the two groups of side frames are symmetrically arranged on both sides of the top of the test platform. A first bidirectional telescopic plate is installed at the rear end of the side frame, and a second bidirectional telescopic plate is installed at the front end of the side frame. A positioning assembly is provided on the outside of the frame, and the positioning assembly includes a vertical frame, and the vertical frame slides along the outer surface of the side frame, and a slide is slidably connected inside the vertical frame, and two connecting rods are symmetrically mounted on the surface of the slide via a rotating shaft, and the connecting rods are respectively connected to the positions of the first two-way telescopic plate and the second two-way telescopic plate, and an adjustment assembly is provided on the outside of the side frame near one end of the first two-way telescopic plate, and the adjustment assembly includes a mounting frame, and two sliding seats are slidably sleeved on the surface of the mounting frame, and the sliding seats are fixedly connected to the corresponding side frames, and a cross beam is provided at the bottom of the mounting frame, and the cross beam slides along both sides of the base frame.

[0007] Furthermore, the clamping assembly also includes a slide groove, a slide groove is opened on the side of the side frame, and a slide rod is fixed inside the slide groove, the two extended ends of the first two-way telescopic plate slide out of the slide groove and are sleeved on the slide rod, and the slide rod is located between the slide groove and the extended end of the first two-way telescopic plate and is sleeved with a spring.

[0008] Furthermore, a vertical groove is opened at the position of the side frame corresponding to the second bidirectional telescopic plate, and the two extended ends of the second bidirectional telescopic plate slide along the inside of the vertical groove. A second electric push rod is fixed to the top of the vertical groove of the side frame, and the extended end of the second electric push rod is fixedly connected to the extended end of the second bidirectional telescopic plate.

[0009] Furthermore, the positioning assembly also includes a connecting plate, and a connecting plate is fixed to the outer side of the vertical groove and one end of the first two-way telescopic plate passing through the slide groove, and the connecting plate is rotatably connected to the other end of the connecting rod through a rotating shaft, a plug column is fixed to the bottom of the vertical frame, a horizontal groove is opened on the outer surface of the side frame, and the vertical frame slides along the horizontal groove.

[0010] Furthermore, a movable frame is slidably connected inside the movable station, and a positioning block is fixed inside the movable frame at the middle position of the EL detector, and a socket is opened at the top of the positioning block corresponding to the position of the plug post, and the plug post can be inserted into the socket.

[0011] Furthermore, a plug plate is fixed to the bottom of the side frame, and the plug plate is slidably plugged on the side surface of the movable frame.

[0012] Furthermore, a third electric push rod is fixed to the connecting plate outside the extended end of the first bidirectional telescopic plate, and the extended end of the third electric push rod can pass through the connecting plate and be in extrusion contact with the outer wall of the side frame.

[0013] Furthermore, the adjustment component also includes a bidirectional screw, the bidirectional screw is rotatably installed inside the mounting frame through a bearing, and a motor is fixed to one end of the mounting frame, the motor output end is fixedly connected to the bidirectional screw, and the sliding seat is threadedly sleeved on the surface of the bidirectional screw.

[0014] Furthermore, two fourth electric push rods are fixed on the top of the cross beam, and the extended ends of the fourth electric push rods are fixed to the bottom of the mounting frame, a sliding frame is fixed to the outside of the other end of the side frame, and a slider is slidably connected to the inside of the sliding frame, a fifth electric push rod is fixed to the position of the base frame corresponding to the slider, and the extended end of the fifth electric push rod is fixedly connected to the slider.

[0015] Furthermore, slide rails are arranged on both sides of the base frame, and a first electric push rod is fixed inside the slide rail, and an extended end of the first electric push rod is fixedly connected to the crossbeam.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention lifts the clamping assembly to a certain height through the fourth electric push rod and the fifth electric push rod. After the squeezing contact between the third electric push rod and the outer wall of the side frame is released, the two extended ends of the first bidirectional telescopic plate slide along the slide groove and the slide rod toward the second bidirectional telescopic plate through the elastic force of the spring. According to the width of the photovoltaic component, the motor drives the bidirectional screw to rotate, and the two slide seats cooperate with the bidirectional screw threads to slide along the mounting frame to adjust the spacing between the two side frames. The cooperative telescopic adjustment of the first bidirectional telescopic plate and the second bidirectional telescopic plate is suitable for the detection of photovoltaic components of different sizes.

[0018] 2. After the first and second bidirectional telescopic plates of the present invention limit the front and rear ends of the photovoltaic component, the third electric push rod locks the position of the first bidirectional telescopic plate. At this time, the clamping assembly is moved according to the position of the vertical frame of the positioning assembly, and the first electric push rod inside the base frame pushes the crossbeam to slide along the slide rail. The entire adjustment assembly and the clamping assembly move horizontally until the vertical frame corresponds to the positioning block, and then the clamping assembly is lowered by the fourth and fifth electric push rods, so that the photovoltaic component contacts and is detected by the EL detector on the test bench. When the distance between the two side frames changes, the slider on the top of the fifth electric push rod slides along the slide frame to maintain the connection.

[0019] 3. The present invention inserts the plug plate at the bottom of the side frame into the inside of the moving frame, and then when the spacing of the side frames is adjusted, the moving frame moves synchronously along the moving station to keep the positions of the vertical frame and the positioning frame always on the same vertical plane.

[0020] 4. In the present invention, when the bottom of the vertical frame and the top of the positioning block are vertically corresponding, a signal is transmitted to the system. At this time, the clamping assembly is driven to descend through the adjusting assembly, and the plug post of the vertical frame is inserted into the plug hole of the positioning block. Because the horizontal position of one side of the second two-way telescopic plate does not change, as the position of the first two-way telescopic plate changes, the connecting rod pushes the slide plate to slide along the inside of the vertical frame, and the vertical frame slides along the horizontal groove to keep the vertical frame always in the middle position of the first two-way telescopic plate and the second two-way telescopic plate.

[0021] 5. When placing the photovoltaic component, the second electric push rod on the vertical groove pushes the second bidirectional telescopic plate downward along the vertical groove to expose the entrance end of the side frame, which is convenient for placing or removing the photovoltaic component. When the photovoltaic component is placed, it will contact the first bidirectional telescopic plate and push the first bidirectional telescopic plate to slide along the slide groove until the rear end of the photovoltaic component is in contact with the second bidirectional telescopic plate.

[0022] 6. Compared with the prior art, the present invention mainly utilizes the EL detector on the test bench to test the voltage and current of the photovoltaic module after contact. A clamping assembly for limiting and fixing the photovoltaic module is provided at the upper end of the test bench, and is adaptively adjusted according to the sizes of different photovoltaic modules. At the same time, there are positioning assemblies on both sides of the test bench for guiding and positioning the upper clamping assembly and the photovoltaic module. The position of the corresponding positioning block is maintained in the middle position of the EL detector to keep the middle position of the photovoltaic module in contact with the EL detector. This part of the structure is to ensure that the EL detector has sufficient contact with the photovoltaic module to be tested. Photovoltaic modules of different sizes always keep the middle area in direct contact with the EL detector. After connecting the EL detector and the photovoltaic module, the voltage and current are detected, and the monitoring data is fed back to the system terminal, which saves the time of manual adjustment and avoids the problem of insufficient contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the overall structure of a photovoltaic power generation grid-connected performance testing device of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of an adjustment component of a photovoltaic power generation grid-connected performance testing device of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a clamping assembly of a photovoltaic power generation grid-connected performance testing device of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a positioning component of a photovoltaic power generation grid-connected performance testing device according to the present invention;

[0027] Figure 5 A schematic diagram of the internal structure of a mobile station of a photovoltaic power generation grid-connected performance testing device according to the present invention;

[0028] Figure 6 This is a schematic diagram of the installation position of an EL detector of a photovoltaic power generation grid-connected performance testing device of the present invention.

[0029] In the figure: 1, base frame; 11, slide rail; 12, first electric push rod; 13, cross beam; 2, clamping assembly; 21, side frame; 22, slide groove; 23, slide rod; 24, spring; 25, first two-way telescopic plate; 26, second two-way telescopic plate; 27, vertical groove; 28, second electric push rod; 3, inspection table; 31, mobile station; 32, EL detector; 33, mobile frame; 34, positioning block; 35, socket; 36, plug plate; 4, positioning assembly; 41, vertical frame; 42, slide plate; 43, connecting rod; 44, plug column; 45, connecting plate; 46, third electric push rod; 47, cross groove; 5, adjustment assembly; 51, mounting frame; 52, slide seat; 53, two-way screw; 54, motor; 55, fourth electric push rod; 56, slide frame; 57, slider; 58, fifth electric push rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 6The present invention provides a technical solution: a photovoltaic power generation grid-connected performance test device, comprising a base frame 1, a test platform 3 is fixed on the top of the base frame 1, and an EL detector 32 is installed in the middle position of the test platform 3, the detection end of the EL detector 32 is flush with the test platform 3, and movable stations 31 are arranged on both sides of the test platform 3. A clamping component 2 is arranged on the top of the test platform 3, and the clamping component 2 comprises two groups of side frames 21, and the two groups of side frames 21 are symmetrically arranged on both sides of the top of the test platform 3. A first bidirectional telescopic plate 25 is installed at the rear end of the side frame 21, and a second bidirectional telescopic plate 26 is installed at the front end of the side frame 21. A positioning component 4 is arranged on the outside of the side frame 21, and the positioning component 4 comprises a vertical frame 41, and the vertical frame 41 slides along the outer surface of the side frame 21, and a slide plate 42 is slidably connected inside the vertical frame 41, and the surface of the slide plate 42 is symmetrically rotated by a rotating axis. Two connecting rods 43 are installed, and the connecting rods 43 are respectively connected to the positions of the first two-way telescopic plate 25 and the second two-way telescopic plate 26. An adjustment component 5 is provided on the outer side of the side frame 21 near one end of the first two-way telescopic plate 25. The adjustment component 5 includes a mounting frame 51. Two slide seats 52 are slidably sleeved on the surface of the mounting frame 51, and the slide seats 52 are fixedly connected to the corresponding side frames 21. A crossbeam 13 is provided at the bottom of the mounting frame 51, and the crossbeam 13 slides along both sides of the base frame 1. When using the device, the clamping component 2 is lifted above the detection table 3, and the range of the clamping component 2 is adjusted according to the size of the photovoltaic component to be detected. Then the photovoltaic component is placed in the clamping component 2 and clamped and fixed. The adjustment component 5 and the positioning component 4 adjust the position of the photovoltaic component, and the photovoltaic component is contacted with the EL detector 32 after keeping it corresponding to the middle position of the EL detector 32 to test the electrical performance.

[0032] In this embodiment, the clamping assembly 2 also includes a slide groove 22, a slide groove 22 is provided on the side of the side frame 21, and a slide rod 23 is fixed inside the slide groove 22, the two extended ends of the first two-way telescopic plate 25 slide out of the slide groove 22 and are sleeved on the slide rod 23, the slide rod 23 is located between the slide groove 22 and the extended end of the first two-way telescopic plate 25 and is sleeved with a spring 24, the side frame 21 is provided with a vertical groove 27 at a position corresponding to the second two-way telescopic plate 26, and the two extended ends of the second two-way telescopic plate 26 slide along the vertical groove 27, the side frame 21 is located at the vertical A second electric push rod 28 is fixed to the top of the groove 27, and the extended end of the second electric push rod 28 is fixedly connected to the extended end of the second bidirectional telescopic plate 26. When placing the photovoltaic component, the second electric push rod 28 on the vertical groove 27 pushes the second bidirectional telescopic plate 26 downward along the vertical groove 27 to expose the entrance end of the side frame 21, which is convenient for placing or removing the photovoltaic component. When the photovoltaic component is placed in, it will contact the first bidirectional telescopic plate 25 and push the first bidirectional telescopic plate 25 to slide along the slide groove 22 until the rear end of the photovoltaic component is in contact with the second bidirectional telescopic plate 26.

[0033] In this embodiment, the positioning assembly 4 also includes a connecting plate 45, the outer side of the vertical slot 27 and the end of the first two-way telescopic plate 25 passing through the slide slot 22 are fixed with a connecting plate 45, and the connecting plate 45 is rotatably connected to the other end of the connecting rod 43 through a rotating shaft, a plug post 44 is fixed to the bottom of the vertical frame 41, a transverse groove 47 is provided on the outer surface of the side frame 21, and the vertical frame 41 slides along the transverse groove 47, the mobile station 31 is slidably connected to the mobile frame 33, and a positioning block 34 is fixed to the mobile frame 33 at the middle position of the EL detector 32, and a socket 35 is provided at the top of the positioning block 34 corresponding to the plug post 44 The plug 44 can be inserted into the socket 35, and a sensing module can be set at the bottom of the vertical frame 41 and the top of the positioning block 34. When the two are vertically corresponding, the signal is transmitted to the system. At this time, the clamping component 2 is driven to descend by the adjustment component 5, and the plug 44 of the vertical frame 41 is inserted into the socket 35 of the positioning block 34. Because the horizontal position of one side of the second two-way telescopic plate 26 does not change, as the position of the first two-way telescopic plate 25 changes, the connecting rod 43 pushes the slide plate 42 to slide along the inside of the vertical frame 41, and the vertical frame 41 slides along the horizontal groove 47 to keep the vertical frame 41 always in the middle position of the first two-way telescopic plate 25 and the second two-way telescopic plate 26.

[0034] In this embodiment, a plug plate 36 is fixed to the bottom of the side frame 21, and the plug plate 36 is slidably inserted into the side surface of the movable frame 33. The plug plate 36 at the bottom of the side frame 21 is inserted into the inside of the movable frame 33. When the spacing of the side frames 21 is adjusted, the movable frame 33 moves synchronously along the movable station 31, keeping the positions of the vertical frame 41 and the positioning frame always on the same vertical plane.

[0035] In this embodiment, a third electric push rod 46 is fixed to the connecting plate 45 on the outer side of the extended end of the first bidirectional telescopic plate 25, and the extended end of the third electric push rod 46 can pass through the connecting plate 45 and squeeze and contact the outer wall of the side frame 21. The adjustment component 5 also includes a bidirectional screw 53. The bidirectional screw 53 is rotatably installed inside the mounting frame 51 through a bearing, and a motor 54 is fixed to one end of the mounting frame 51. The output end of the motor 54 is fixedly connected to the bidirectional screw 53. The slide seat 52 is threadedly sleeved on the surface of the bidirectional screw 53. Two fourth electric push rods 55 are fixed on the top of the crossbeam 13, and the fourth electric push rods 55 are The extended end is fixed to the bottom of the mounting frame 51, a sliding frame 56 is fixed to the outside of the other end of the side frame 21, and a slider 57 is slidably connected inside the sliding frame 56, a fifth electric push rod 58 is fixed to the position of the base frame 1 corresponding to the slider 57, and the extended end of the fifth electric push rod 58 is fixedly connected to the slider 57, slide rails 11 are arranged on both sides of the base frame 1, and a first electric push rod 12 is fixed inside the slide rail 11, and the extended end of the first electric push rod 12 is fixedly connected to the crossbeam 13. When placing the photovoltaic component first, the fourth electric push rod 55 and the fifth electric push rod 58 lift the clamping component 2 to a certain height, and release the third electric push rod After the first bidirectional telescopic plate 25 is squeezed and contacted with the outer wall of the side frame 21, the two extended ends of the first bidirectional telescopic plate 25 slide along the slide groove 22 and the slide rod 23 toward the second bidirectional telescopic plate 26 through the elastic force of the spring 24. According to the width of the photovoltaic module, the motor 54 drives the bidirectional screw 53 to rotate, and the two slide seats 52 and the bidirectional screw 53 are threadedly matched to slide along the mounting frame 51 to adjust the spacing between the two side frames 21. The first bidirectional telescopic plate 25 and the second bidirectional telescopic plate 26 are telescopically adjusted in coordination, and then the photovoltaic module is placed between the two side frames 21. After the front and rear ends of the photovoltaic module are limited by the first bidirectional telescopic plate 25 and the second bidirectional telescopic plate 26, The third electric push rod 46 locks the position of the first bidirectional telescopic plate 25. At this time, the clamping assembly 2 is moved according to the position of the vertical frame 41 of the positioning assembly 4. The first electric push rod 12 inside the base frame 1 pushes the crossbeam 13 to slide along the slide rail 11. The entire adjustment assembly 5 and the clamping assembly 2 move horizontally until the vertical frame 41 corresponds to the positioning block 34. The clamping assembly 2 is lowered by the fourth electric push rod 55 and the fifth electric push rod 58, so that the photovoltaic assembly contacts and is detected by the EL detector 32 on the test bench 3. When the distance between the two side frames 21 changes, the slider 57 on the top of the fifth electric push rod 58 slides along the slide frame 56 to maintain the connection.

[0036] When the device is in use, the fourth electric push rod 55 and the fifth electric push rod 58 lift the clamping assembly 2 to a certain height. After the third electric push rod 46 is released from the squeezing contact with the outer wall of the side frame 21, the two extended ends of the first bidirectional telescopic plate 25 slide along the slide groove 22 and the slide rod 23 toward the second bidirectional telescopic plate 26 through the elastic force of the spring 24. According to the width of the photovoltaic component, the motor 54 drives the bidirectional screw 53 to rotate, and the two slide seats 52 and the bidirectional screw 53 are threadedly matched to slide along the mounting frame 51 to adjust the spacing between the two side frames 21. The first bidirectional telescopic plate 25 and the second bidirectional telescopic plate 26 are telescopically adjusted in coordination. The second electric push rod 28 on the vertical groove 27 pushes the second bidirectional telescopic plate 26 downward along the vertical groove 27 to expose the entrance end of the side frame 21, which is convenient for placing or removing the photovoltaic component. When the photovoltaic component is placed in, it will contact with the The first bidirectional telescopic plate 25 contacts and pushes the first bidirectional telescopic plate 25 to slide along the slide groove 22 until the rear end of the photovoltaic component contacts and is tightly attached to the second bidirectional telescopic plate 26. The third electric push rod 46 locks the position of the first bidirectional telescopic plate 25. At this time, the clamping assembly 2 is moved according to the position of the vertical frame 41 of the positioning assembly 4, and the first electric push rod 12 inside the base frame 1 pushes the crossbeam 13 to slide along the slide rail 11. The entire adjustment assembly 5 and the clamping assembly 2 move horizontally until the vertical frame 41 corresponds to the positioning block 34, and then the clamping assembly 2 is lowered by the fourth electric push rod 55 and the fifth electric push rod 58, so that the photovoltaic component contacts and is tested with the EL detector 32 on the test bench 3. After keeping the correspondence with the middle position of the EL detector 32, the photovoltaic component is contacted with the EL detector 32 to test the electrical performance.

[0037] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic power generation grid-connected performance testing device, comprising a base frame (1), characterized in that: A detection platform (3) is fixed on the top of the base frame (1), and an EL detector (32) is installed in the middle of the detection platform (3), and the detection end of the EL detector (32) is flush with the detection platform (3). Moving workstations (31) are provided on both sides of the detection platform (3). A clamping assembly (2) is provided on the top of the detection platform (3), and the clamping assembly (2) includes two groups of side frames (21). The two groups of side frames (21) are symmetrically arranged on both sides of the top of the detection platform (3). A first bidirectional telescopic plate (25) is installed at the rear end of the side frame (21), and a second bidirectional telescopic plate (26) is installed at the front end of the side frame (21). A positioning assembly (4) is provided on the outer side of the side frame (21), and the positioning assembly (4) includes a vertical frame (41). The vertical frame (42) is provided with a plurality of vertical frames (43). The vertical frame (41) slides along the outer surface of the side frame (21), and a slide plate (42) is slidably connected inside the vertical frame (41), two connecting rods (43) are symmetrically rotated on the surface of the slide plate (42) through a rotating shaft, and the connecting rods (43) are respectively connected to the positions of the first two-way telescopic plate (25) and the second two-way telescopic plate (26), and an adjustment component (5) is provided on the outer side of the side frame (21) near one end of the first two-way telescopic plate (25), and the adjustment component (5) includes a mounting frame (51), two sliding seats (52) are slidably sleeved on the surface of the mounting frame (51), and the sliding seats (52) are fixedly connected to the corresponding side frame (21), and a cross beam (13) is provided at the bottom of the mounting frame (51), and the cross beam (13) slides along the two sides of the bottom frame (1).

2. A photovoltaic power generation grid-connected performance testing device according to claim 1, characterized in that: The clamping assembly (2) also includes a slide groove (22), the side surface of the side frame (21) is provided with a slide groove (22), and a slide rod (23) is fixed inside the slide groove (22), the two extended ends of the first bidirectional telescopic plate (25) slide out of the slide groove (22) and are sleeved on the slide rod (23), and the slide rod (23) is located between the slide groove (22) and the extended end of the first bidirectional telescopic plate (25) and is sleeved with a spring (24).

3. A photovoltaic power generation grid-connected performance testing device according to claim 2, characterized in that: The side frame (21) is provided with a vertical slot (27) at a position corresponding to the second bidirectional telescopic plate (26), and the two extended ends of the second bidirectional telescopic plate (26) slide along the inside of the vertical slot (27), and the side frame (21) is fixed with a second electric push rod (28) at the top of the vertical slot (27), and the extended end of the second electric push rod (28) is fixedly connected to the extended end of the second bidirectional telescopic plate (26).

4. A photovoltaic power generation grid-connected performance testing device according to claim 3, characterized in that: The positioning assembly (4) further comprises a connecting plate (45), the outer side of the vertical slot (27) and one end of the first bidirectional telescopic plate (25) passing through the slide slot (22) are both fixed with connecting plates (45), and the connecting plate (45) is rotatably connected to the other end of the connecting rod (43) via a rotating shaft, a plug post (44) is fixed to the bottom of the vertical frame (41), a transverse slot (47) is provided on the outer surface of the side frame (21), and the vertical frame (41) slides along the transverse slot (47).

5. A photovoltaic power generation grid-connected performance testing device according to claim 4, characterized in that: The movable station (31) is slidably connected to a movable frame (33), and a positioning block (34) is fixed in the middle of the EL detector (32) inside the movable frame (33), and a plug hole (35) is provided at the top of the positioning block (34) at a position corresponding to the plug post (44), and the plug post (44) can be inserted into the plug hole (35).

6. A photovoltaic power generation grid-connected performance testing device according to claim 5, characterized in that: A plugging plate (36) is fixed to the bottom of the side frame (21), and the plugging plate (36) is slidably plugged on the side surface of the moving frame (33).

7. A photovoltaic power generation grid-connected performance testing device according to claim 4, characterized in that: A third electric push rod (46) is fixed to a connecting plate (45) outside the extended end of the first bidirectional telescopic plate (25), and the extended end of the third electric push rod (46) can pass through the connecting plate (45) and come into compression contact with the outer wall of the side frame (21).

8. The photovoltaic power generation grid-connected performance testing device according to claim 1, characterized in that: The adjustment assembly (5) further comprises a bidirectional screw (53), the bidirectional screw (53) being rotatably mounted inside the mounting frame (51) via a bearing, a motor (54) being fixed to one end of the mounting frame (51), an output end of the motor (54) being fixedly connected to the bidirectional screw (53), and the slide seat (52) being threadedly sleeved on the surface of the bidirectional screw (53).

9. A photovoltaic power generation grid-connected performance testing device according to claim 8, characterized in that: Two fourth electric push rods (55) are fixed on the top of the cross beam (13), and the extended ends of the fourth electric push rods (55) are fixed to the bottom of the mounting frame (51); a sliding frame (56) is fixed to the outside of the other end of the side frame (21), and a sliding block (57) is slidably connected inside the sliding frame (56); a fifth electric push rod (58) is fixed to the position of the base frame (1) corresponding to the sliding block (57), and the extended end of the fifth electric push rod (58) is fixedly connected to the sliding block (57).

10. A photovoltaic power generation grid-connected performance testing device according to claim 9, characterized in that: Slide rails (11) are arranged on both sides of the base frame (1), and a first electric push rod (12) is fixed inside the slide rail (11), and the extended end of the first electric push rod (12) is fixedly connected to the crossbeam (13).

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