A photovoltaic power generation grid-connected performance testing device

Abstract

The present invention provides a photovoltaic power generation grid-connected performance testing device, which relates to the technical field of electrical performance testing. This device mainly uses the EL detector on the detection table to test the voltage and current after contacting the photovoltaic module. A clamping assembly 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, positioning assemblies for guiding and positioning the upper clamping assembly and the photovoltaic module are provided on both sides of the detection table. The positions of the corresponding positioning blocks are maintained at the middle position of the EL detector, so that the middle position of the photovoltaic module is in contact with the EL detector. This part of the structure is to ensure sufficient contact between the EL detector and 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 to the photovoltaic module, voltage and current are detected, and the monitored data is fed back to the system terminal, saving the time of manual adjustment.

Description

Technical Field

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

[0002] Photovoltaic power generation grid connection refers to the process of converting the direct current output by a 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 technologies and system components involved in this process include components such as solar cell arrays, DC / DC converters, and DC / AC inverters. The purpose is to connect dispersed photovoltaic systems to a centralized power grid to achieve effective utilization and distribution of electric energy.

[0003] In the testing of photovoltaic power generation grid-connected performance, electrical performance detection is relatively important. To evaluate the performance of photovoltaic modules, parameters such as open-circuit voltage, short-circuit current, maximum power point voltage, and current are measured through a photovoltaic conversion efficiency meter and a programmable electronic load. Currently, the main method for detecting the electrical performance of photovoltaic power generation grid connection is to detect photovoltaic modules. The electrical performance testing of photovoltaic modules mainly includes the following aspects: Current-Voltage (I-V) characteristic testing: By measuring the current output of the module at different voltages and plotting the I-V characteristic curve, key parameters such as the open-circuit voltage, short-circuit current, maximum power point voltage, and maximum power point current of the module can be evaluated. These parameters directly reflect the power generation capacity and conversion efficiency of the module. When using an EL detector to detect photovoltaic modules, the first thing to do is equipment setup, which includes connecting the power supply of the EL detector to the module to ensure stable power supply. It is also necessary to set 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 setting of these parameters should be determined according to specific test requirements and the characteristics of the photovoltaic module to ensure the accuracy and effectiveness of the test. During the detection operation stage, the EL detector needs to be placed on the back or a designated position of the photovoltaic module, and it is necessary to ensure that the detection probe is in close contact with the surface of the photovoltaic module to avoid air gaps to ensure the reliability of the detection results.

[0004] However, due to different models and power generation requirements, the sizes of photovoltaic modules are different. When contacting and detecting with an EL detector, it may be necessary to adjust the position because of the position of the size of the photovoltaic module, and it is necessary to keep the middle area of the photovoltaic module in contact with the EL detector. This process requires manual adjustment, which is rather inconvenient. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a photovoltaic power generation grid-connected performance testing device to solve the problems proposed in the above background technology. The structure of the present invention is novel. This device mainly uses the EL detector on the detection table to test the voltage and current after contacting the photovoltaic module. There is a clamping component for limiting and fixing the photovoltaic module at the upper end of the detection table, which is adjusted adaptively 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 kept in the middle position of the EL detector, so that the middle position of the photovoltaic module is in contact with the EL detector. This part of the structure is to ensure sufficient contact between the EL detector and 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, saving the time of manual adjustment and avoiding the problem of insufficient contact at the same time.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A photovoltaic power generation grid-connected performance testing device, including a chassis, a detection table is fixed on the top of the chassis, and an EL detector is installed at the middle position of the detection table. The detection end of the EL detector is flush with the detection table. There are moving workstations on both sides of the detection table. There is a clamping component on the top of the detection table. The clamping component includes two side frames. The two side frames are symmetrically arranged on both sides of the top of the detection table. 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. There is a positioning component outside the side frame. The positioning component includes a vertical frame. The vertical frame slides along the outer surface of the side frame, and a sliding plate is slidably connected inside the vertical frame. Two connecting rods are symmetrically rotatably installed on the surface of the sliding plate through rotating shafts, and the connecting rods are respectively connected to the positions of the first bidirectional telescopic plate and the second bidirectional telescopic plate. There is an adjusting component outside the side frame near the first bidirectional telescopic plate end. The adjusting component includes a mounting frame. Two sliding seats are slidably sleeved on the surface of the mounting frame, and the sliding seats are fixed to the corresponding side frames. There is a cross beam at the bottom of the mounting frame, and the cross beam slides along both sides of the chassis.

[0007] Further, the clamping component further includes a chute. A chute is opened on the side surface of the side frame, and a sliding rod is fixed inside the chute. The two extended ends of the first bidirectional telescopic plate slide out of the chute and are sleeved on the sliding rod. A spring is sleeved between the sliding rod and the extended end of the first bidirectional telescopic plate.

[0008] Further, vertical grooves are opened at the positions of the side frames corresponding to the second bidirectional telescopic plates, and the two extended ends of the second bidirectional telescopic plate slide along the inside of the vertical grooves. A second electric push rod is fixed at the top of the side frame at the vertical groove, and the extended end of the second electric push rod is fixed to the extended end of the second bidirectional telescopic plate.

[0009] Further, the positioning assembly further includes a connecting plate. Connecting plates are fixed to the outer side of the vertical groove and one end of the first double-acting telescopic plate passing through the sliding groove, and the other end of the connecting plate is rotatably connected to the connecting rod through a rotating shaft. An inserting column is fixed to the bottom of the vertical frame. A horizontal groove is formed on the outer surface of the side frame, and the vertical frame slides along the horizontal groove.

[0010] Further, a moving frame is slidably connected inside the moving station, and a positioning block is fixed at the middle position of the EL detector inside the moving frame. A jack is formed at the top of the positioning block corresponding to the position of the inserting column, and the inserting column can be inserted into the jack.

[0011] Further, an inserting plate is fixed to the bottom of the side frame, and the inserting plate is slidably inserted on the side surface of the moving frame.

[0012] Further, a third electric push rod is fixed to the connecting plate on the outer side of the extended end of the first double-acting telescopic plate, and the extended end of the third electric push rod can pass through the connecting plate and be in pressing contact with the outer wall of the side frame.

[0013] Further, the adjusting assembly further includes a bidirectional screw rod. The bidirectional screw rod is rotatably installed inside the mounting frame through a bearing, and a motor is fixed to one end of the mounting frame. The output end of the motor is fixedly connected to the bidirectional screw rod, and the sliding seat is threadedly sleeved on the surface of the bidirectional screw rod.

[0014] Further, two fourth electric push rods are fixed to the top of the cross beam, and the extended ends of the fourth electric push rods are fixedly connected to the bottom of the mounting frame. A sliding frame is fixed to the outer side of the other end of the side frame, and a sliding block is slidably connected inside the sliding frame. A fifth electric push rod is fixed to the chassis corresponding to the position of the sliding block, and the extended end of the fifth electric push rod is fixedly connected to the sliding block.

[0015] Further, slide rails are arranged on both sides of the chassis, and a first electric push rod is fixed inside the slide rails. The extended end of the first electric push rod is fixedly connected to the cross beam.

[0016] Advantages of the present invention:

[0017] 1. In the present invention, the clamping assembly is lifted to a certain height by the fourth electric push rod and the fifth electric push rod. After the pressing contact between the third electric push rod and the outer wall of the side frame is released, the two extended ends of the first double-acting telescopic plate slide along the sliding groove and the sliding rod towards the second double-acting telescopic plate by the spring force. According to the width of the photovoltaic module, the motor drives the bidirectional screw rod to rotate, and the two sliding seats are threadedly engaged with the bidirectional screw rod and slide along the mounting frame to adjust the distance between the two side frames. The first double-acting telescopic plate and the second double-acting telescopic plate cooperate to expand and contract to adjust, which is suitable for detecting photovoltaic modules of different sizes.

[0018] 2. After the front and rear ends of the photovoltaic module are limited by the first double-direction telescopic plate and the second double-direction telescopic plate, the third electric push rod locks the position of the first double-direction telescopic plate. At this time, the clamping assembly is moved according to the position of the vertical frame of the positioning assembly. The first electric push rod inside the chassis pushes the cross beam 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. Then, the clamping assembly is lowered by the fourth electric push rod and the fifth electric push rod, so that the photovoltaic module contacts the EL detector on the detection table and is detected. When the distance between the two side frames changes, the slider at the top of the fifth electric push rod slides along the sliding frame to maintain the connection.

[0019] 3. The plug board at the bottom of the side frame of the present invention is inserted into the moving frame. Then, when adjusting the distance between the side frames, the moving frame synchronously moves along the moving station, keeping the positions of the vertical frame and the positioning frame always on the same vertical plane.

[0020] 4. When the bottom of the vertical frame and the top of the positioning block are vertically corresponding, the signal is transmitted to the system. At this time, the clamping assembly is driven to descend by the adjustment assembly. The insertion post of the vertical frame is inserted into the jack of the positioning block. Because the horizontal position on one side of the second double-direction telescopic plate does not change, as the position of the first double-direction telescopic plate changes, the connecting rod pushes the sliding 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 between the first double-direction telescopic plate and the second double-direction telescopic plate.

[0021] 5. When placing the photovoltaic module, the second electric push rod on the vertical groove pushes the second double-direction telescopic plate downward along the vertical groove, exposing the entrance end of the side frame, which is convenient for placing or removing the photovoltaic module. When the photovoltaic module is placed, it will contact the first double-direction telescopic plate and push the first double-direction telescopic plate to slide along the sliding groove until the rear end of the photovoltaic module contacts and fits tightly with the second double-direction telescopic plate.

[0022] 6. Compared with the prior art, the present device mainly uses the EL detector on the detection table to test the voltage and current after contacting the photovoltaic module. There is a clamping assembly for limiting and fixing the photovoltaic module 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 assemblies on both sides of the detection table for guiding and positioning the upper clamping assembly and the photovoltaic module. The position of the corresponding positioning block is kept in the middle position of the EL detector, keeping the middle position of the photovoltaic module in contact with the EL detector. This part of the structure is to ensure sufficient contact between the EL detector and 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 monitored data is fed back to the system terminal, saving the time of manual adjustment and avoiding the problem of insufficient contact at the same time. Description of the Drawings

[0023] Figure 1Schematic diagram of the overall structure of a photovoltaic power generation grid connection performance testing device of the present invention;

[0024] Figure 2 Schematic diagram of the adjustment component structure of a photovoltaic power generation grid connection performance testing device of the present invention;

[0025] Figure 3 Schematic diagram of the clamping component structure of a photovoltaic power generation grid connection performance testing device of the present invention;

[0026] Figure 4 Schematic diagram of the positioning component structure of a photovoltaic power generation grid connection performance testing device of the present invention;

[0027] Figure 5 Schematic diagram of the internal structure of the mobile workbench of a photovoltaic power generation grid connection performance testing device of the present invention;

[0028] Figure 6 Schematic diagram of the installation position of the EL detector of a photovoltaic power generation grid connection performance testing device of the present invention.

[0029] In the figure: 1, chassis; 11, slide rail; 12, first electric push rod; 13, cross beam; 2, clamping component; 21, side frame; 22, chute; 23, slide bar; 24, spring; 25, first double - acting telescopic plate; 26, second double - acting telescopic plate; 27, vertical groove; 28, second electric push rod; 3, detection table; 31, mobile workbench; 32, EL detector; 33, mobile frame; 34, positioning block; 35, jack; 36, plug board; 4, positioning component; 41, vertical frame; 42, slide plate; 43, connecting rod; 44, inserting column; 45, connecting plate; 46, third electric push rod; 47, horizontal groove; 5, adjustment component; 51, mounting frame; 52, sliding seat; 53, bidirectional screw; 54, motor; 55, fourth electric push rod; 56, sliding frame; 57, slider; 58, fifth electric push rod. Detailed implementation manners

[0030] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] Please refer to Figures 1 to 6, the present invention provides a technical solution: a photovoltaic power generation grid-connected performance testing device, including a chassis 1, a detection table 3 is fixed on the top of the chassis 1, and an EL detector 32 is installed at the middle position of the detection table 3. The detection end of the EL detector 32 is flush with the detection table 3. Moving stations 31 are provided on both sides of the detection table 3. A clamping assembly 2 is provided on the top of the detection table 3. The clamping assembly 2 includes two sets of side frames 21. The two sets of side frames 21 are symmetrically arranged on both sides of the top of the detection table 3. A first double-acting telescopic plate 25 is installed at the rear end of the side frame 21, and a second double-acting telescopic plate 26 is installed at the front end of the side frame 21. A positioning assembly 4 is provided outside the side frame 21. The positioning assembly 4 includes a vertical frame 41. The vertical frame 41 slides along the outer surface of the side frame 21, and a sliding plate 42 is slidably connected inside the vertical frame 41. Two connecting rods 43 are symmetrically rotatably installed on the surface of the sliding plate 42 through rotating shafts, and the connecting rods 43 are respectively connected to the positions of the first double-acting telescopic plate 25 and the second double-acting telescopic plate 26. An adjusting assembly 5 is provided outside the side frame 21 near one end of the first double-acting telescopic plate 25. The adjusting assembly 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 frames 21. A cross beam 13 is provided at the bottom of the mounting frame 51, and the cross beam 13 slides along both sides of the chassis 1. When using the device, the clamping assembly 2 is lifted higher than the detection table 3, the range of the clamping assembly 2 is adjusted according to the size of the photovoltaic module to be detected, and then the photovoltaic module is placed inside the clamping assembly 2 and clamped and fixed. The adjusting assembly 5 and the positioning assembly 4 adjust the position of the photovoltaic module. After keeping it corresponding to the middle position of the EL detector 32, the photovoltaic module is brought into contact with the EL detector 32 to perform the test of electrical performance.

[0032] In this embodiment, the clamping assembly 2 further includes a chute 22. A chute 22 is opened on the side surface of the side frame 21, and a sliding rod 23 is fixed inside the chute 22. The two extended ends of the first double-acting telescopic plate 25 slide out of the chute 22 and are sleeved on the sliding rod 23. A spring 24 is sleeved between the sliding rod 23 and the extended ends of the first double-acting telescopic plate 25. A vertical groove 27 is opened at the position of the side frame 21 corresponding to the second double-acting telescopic plate 26, and the two extended ends of the second double-acting telescopic plate 26 slide along the inside of the vertical groove 27. A second electric push rod 28 is fixed at the top of the side frame 21 at the vertical groove 27. The extended end of the second electric push rod 28 is fixedly connected to the extended end of the second double-acting telescopic plate 26. When placing the photovoltaic module, the second electric push rod 28 on the vertical groove 27 pushes the second double-acting 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 taking out the photovoltaic module. When the photovoltaic module is placed, it will contact the first double-acting telescopic plate 25 and push the first double-acting telescopic plate 25 to slide along the chute 22 until the rear end of the photovoltaic module contacts and fits tightly with the second double-acting telescopic plate 26.

[0033] In this embodiment, the positioning component 4 further includes a connecting plate 45. Connecting plates 45 are fixedly provided at the outer side of the vertical groove 27 and at one end of the first double-direction telescopic plate 25 passing through the sliding groove 22. The other end of the connecting plate 45 is rotatably connected to the connecting rod 43 through a rotating shaft. A plug post 44 is fixedly provided at the bottom of the vertical frame 41. A horizontal groove 47 is formed on the outer surface of the side frame 21, and the vertical frame 41 slides along the horizontal groove 47. A moving frame 33 is slidably connected inside the moving station 31. A positioning block 34 is fixedly provided at the middle position of the EL detector 32 inside the moving frame 33. A jack 35 is formed at the position corresponding to the plug post 44 at the top of the positioning block 34. The plug post 44 can be inserted into the jack 35. Induction modules can be provided at the bottom of the vertical frame 41 and at the top of the positioning block 34. When the two are vertically corresponding, a signal is transmitted to the system. At this time, the clamping component 2 is driven to descend by the adjusting component 5. The plug post 44 of the vertical frame 41 is inserted into the jack 35 of the positioning block 34. Since the horizontal position of one side of the second double-direction telescopic plate 26 does not change, as the position of the first double-direction telescopic plate 25 changes, the connecting rod 43 pushes the sliding 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 at the middle position between the first double-direction telescopic plate 25 and the second double-direction telescopic plate 26.

[0034] In this embodiment, a plug plate 36 is fixedly provided at the bottom of the side frame 21, and the plug plate 36 is slidably inserted on the side surface of the moving frame 33. By inserting the plug plate 36 at the bottom of the side frame 21 into the moving frame 33, when adjusting the distance between the side frames 21, the moving frame 33 moves synchronously along the moving station 31 to keep 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 extending end of the first double-direction telescopic plate 25, and the extending end of the third electric push rod 46 can pass through the connecting plate 45 to be in pressing contact with the outer wall of the side frame 21. The adjusting assembly 5 further includes a bidirectional screw rod 53. The bidirectional screw rod 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 rod 53. The sliding seat 52 is threadedly sleeved on the surface of the bidirectional screw rod 53. Two fourth electric push rods 55 are fixed to the top of the cross beam 13, and the extending ends of the fourth electric push rods 55 are fixedly connected to the bottom of the mounting frame 51. A sliding frame 56 is fixed to the outer side 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 bottom frame 1 corresponding to the position of the sliding block 57, and the extending end of the fifth electric push rod 58 is fixedly connected to the sliding block 57. Slide rails 11 are arranged on both sides of the bottom frame 1, and a first electric push rod 12 is fixed inside the slide rails 11. The extending end of the first electric push rod 12 is fixedly connected to the cross beam 13. When placing the photovoltaic module for the first time, 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 disengaged from the pressing contact with the outer wall of the side frame 21, the two extending ends of the first double-direction telescopic plate 25 slide along the chute 22 and the slide rod 23 towards the second double-direction telescopic plate 26 by the elastic force of the spring 24. According to the width of the photovoltaic module, the motor 54 drives the bidirectional screw rod 53 to rotate, and the two sliding seats 52 are in threaded cooperation with the bidirectional screw rod 53 and slide along the mounting frame 51 to adjust the distance between the two side frames 21. The first double-direction telescopic plate 25 and the second double-direction telescopic plate 26 are telescopically adjusted in a coordinated manner. 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 double-direction telescopic plate 25 and the second double-direction telescopic plate 26, the third electric push rod 46 locks the position of the first double-direction 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 cross beam 13 is pushed by the first electric push rod 12 inside the bottom frame 1 to slide along the slide rails 11. The entire adjusting assembly 5 and the clamping assembly 2 are horizontally moved until the vertical frame 41 corresponds to the positioning block 34. 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 module is in contact with the EL detector 32 on the detection table 3 for detection. When the distance between the two side frames 21 changes, the sliding block 57 at the top of the fifth electric push rod 58 slides along the sliding frame 56 to maintain the connection.

[0036] When using the device, the fourth electric push rod 55 and the fifth electric push rod 58 lift the clamping assembly 2 to a certain height. After releasing the extrusion contact between the third electric push rod 46 and the outer wall of the side frame 21, the two extended ends of the first double-sided telescopic plate 25 slide along the chute 22 and the slide rod 23 towards the second double-sided telescopic plate 26 by the elastic force of the spring 24. According to the width of the photovoltaic module, the motor 54 drives the double-threaded screw 53 to rotate, and the two sliding seats 52 are threadedly engaged with the double-threaded screw 53 and slide along the mounting frame 51 to adjust the distance between the two side frames 21. The first double-sided telescopic plate 25 and the second double-sided telescopic plate 26 are telescopically adjusted in a cooperative manner. The second electric push rod 28 on the vertical groove 27 pushes the second double-sided telescopic plate 26 downward along the vertical groove 27 to expose the inlet end of the side frame 21, facilitating the placement or removal of the photovoltaic module. When the photovoltaic module is placed, it will contact the first double-sided telescopic plate 25 and push the first double-sided telescopic plate 25 to slide along the chute 22 until the rear end of the photovoltaic module contacts and fits tightly with the second double-sided telescopic plate 26. The third electric push rod 46 locks the position of the first double-sided 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 cross beam 13 is pushed along the slide rail 11 by the first electric push rod 12 inside the bottom frame 1. The entire adjustment assembly 5 and the clamping assembly 2 are horizontally moved 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 module contacts and is detected by the EL detector 32 on the detection table 3. After keeping the middle position corresponding to the EL detector 32, the photovoltaic module is brought into contact with the EL detector 32 for electrical performance testing.

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

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments 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 testing platform (3) is fixed on the top of the base frame (1), and an EL detector (32) is installed in the middle of the testing platform (3), the detection end of the EL detector (32) is flush with the testing platform (3), movable workstations (31) are provided on both sides of the testing platform (3), a clamping assembly (2) is provided on the top of the testing platform (3), the clamping assembly (2) comprises two groups of side frames (21), the two groups of side frames (21) are symmetrically arranged on both sides of the top of the testing 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), and a positioning assembly (4) is provided on the outer side of the side frame (21), and the positioning assembly (4) The utility model comprises a vertical frame (41), wherein 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 two connecting rods (43) are symmetrically mounted on the surface of the slide plate (42) via a rotating shaft, and the connecting rods (43) are respectively connected to the positions of the first bidirectional telescopic plate (25) and the second bidirectional telescopic plate (26), and an adjustment component (5) is arranged on the outer side of one end of the side frame (21) close to the first bidirectional telescopic plate (25), and the adjustment component (5) comprises a mounting frame (51), and 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 the bottom of the mounting frame (51) is provided with The cross beam (13) is arranged on the bottom frame (1), and the cross beam (13) slides along both sides of the bottom frame (1); the clamping assembly (2) further comprises 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); 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); a spring (24) is sleeved on the slide rod (23) between the slide groove (22) and the extended end of the first bidirectional telescopic plate (25); the positioning assembly (4) further comprises a connecting plate (45); a vertical groove (27) is provided at a position of the side frame (21) corresponding to the second bidirectional telescopic plate (26); the outer side of the vertical groove (27) and the first bidirectional telescopic plate (26) are in contact with each other. A connecting plate (45) is fixed to one end of the telescopic plate (25) passing through the slide groove (22), and the connecting plate (45) is rotatably connected to the other end of the connecting rod (43) via a rotating shaft. A plug column (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 adjustment component (5) also includes a bidirectional screw (53). The bidirectional screw (53) is rotatably installed inside the mounting frame (51) via 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), and the slide seat (52) is threadedly sleeved on the surface of the bidirectional screw (53).

2. A photovoltaic power generation grid-connected performance testing device according to claim 1, characterized in that: The two extended ends of the second bidirectional telescopic plate (26) slide along the inside of the vertical slot (27); a second electric push rod (28) is fixed to the side frame (21) 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).

3. A photovoltaic power generation grid-connected performance testing device according to claim 1, 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).

4. A photovoltaic power generation grid-connected performance testing device according to claim 3, characterized in that: A plug plate (36) is fixed to the bottom of the side frame (21), and the plug plate (36) is slidably plugged onto the side surface of the moving frame (33).

5. The photovoltaic power generation grid-connected performance testing device according to claim 1, characterized in that: A third electric push rod (46) is fixed to the 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).

6. The photovoltaic power generation grid-connected performance testing device according to claim 1, characterized in that: Two fourth electric push rods (55) are fixed on the top of the crossbeam (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).

7. A photovoltaic power generation grid-connected performance testing device according to claim 6, 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 an extended end of the first electric push rod (12) is fixedly connected to a crossbeam (13).

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