A performance test system and method for distributed photovoltaic power station

Abstract

The present invention discloses a performance test system and method for a distributed photovoltaic power station, wherein a plurality of functional cylinder components are evenly arranged on the right side of the test box from front to back, a heat preservation box is fixedly connected to the middle of the inner cavity of the test box through a thin column, an inner box is fixedly arranged in the inner cavity of the heat preservation box, and a plurality of coils of electric heating wire are fixedly arranged between the inner wall of the heat preservation box and the outer wall of the inner box, and the present invention relates to the technical field of photovoltaic power stations. The performance test system and method for the distributed photovoltaic power station can accurately detect which part of the cable surface has leakage through the mutual cooperation between the rotating shaft, the sleeve column, the first spring and the arc-shaped contact sheet, and has good insulation detection effect, high detection efficiency and strong practicality. Through the mutual cooperation between the bottom plate, the first contact block, the second contact block and the arc-shaped thin sheet, the high temperature resistance and insulation of the cable can be detected simultaneously, and the detection efficiency is greatly improved, which has the value and significance of promotion.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power stations, and in particular to a performance test system and method for a distributed photovoltaic power station. Background Art

[0002] Distributed photovoltaic power stations usually refer to power generation systems that use distributed resources, have a small installed capacity, and are arranged near users. They are generally connected to a power grid with a voltage level of less than 35 kV or lower. Distributed photovoltaic power stations specifically refer to distributed photovoltaic power station systems that use photovoltaic modules to directly convert solar energy into electrical energy. The most widely used distributed photovoltaic power station system is a photovoltaic power generation project built on the roof of a city building. This type of project must be connected to the public power grid and supply power to nearby users together with the public power grid. Without the support of the public power grid, the distributed system cannot guarantee the reliability and quality of electricity use for users. Distributed photovoltaic power stations have low pollution and outstanding environmental benefits. The basic configuration of distributed photovoltaic power generation includes: solar panels, inverters, brackets, cables and installation accessories, etc. Large power stations also require other auxiliary equipment such as transformers and distribution cabinets. Among them, the cable in the photovoltaic power station is a power transmission device, usually composed of several or several groups of wires, each group of wires is insulated from each other, and is often twisted around a center, and the entire outside is covered with a highly insulating covering layer. The cable has the characteristics of internal power supply and external insulation. Based on the above characteristics, cables in photovoltaic power stations must undergo rigorous testing before being put into use, and only cables that meet the standards can be put into use.

[0003] The existing performance test system of distributed photovoltaic power stations is not effective in detecting the insulation of cables. It is unable to accurately detect which part of the cable surface has leakage. The detection efficiency is too low and the practicality is not strong. In addition, the high temperature resistance and insulation of the cable need to be tested separately, and synchronous detection cannot be achieved. Only single-cable detection experiments can be performed, which leaves much room for improvement. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a performance test system and method for a distributed photovoltaic power station, which solves the problems of poor insulation detection of cables, inability to accurately detect which part of the cable surface has leakage, too low detection efficiency, poor practicality, and the need to separately test the high temperature resistance and insulation of the cable, inability to achieve synchronous detection, and only single-cable detection experiments.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a performance test system for a distributed photovoltaic power station, including a test box, a plurality of functional cylinder assemblies are evenly arranged from front to back on the right side of the test box, an insulation box is fixedly connected to the middle of the inner cavity of the test box through a thin column, an inner box is fixedly arranged in the inner cavity of the insulation box, a plurality of coils of heating wire are fixedly arranged between the inner wall of the insulation box and the outer wall of the inner box, limit blocks are fixedly arranged on the left and right sides of the bottom of the inner cavity of the inner box, a heat-resistant detection plate assembly is arranged between the two limit blocks, and the left side of the test box is fixedly arranged from A plurality of guide tubes are evenly arranged from front to back, a plurality of warning lights are evenly fixedly arranged on the right side of the top of the test box from front to back, each of the functional cylinder components includes an outer cylinder and a detection cylinder mechanism, a cleaning cylinder mechanism is rotatably arranged inside the outer cylinder, a first gear is rotatably arranged on the upper front end of the detection cylinder mechanism through a connecting rod, a first limit plate is fixedly arranged in the middle of the front end of the detection cylinder mechanism, a rotating rod is passed through the interior of the first limit plate, and a second gear is fixedly arranged on the upper and lower ends of the rotating rod, a second limit plate is fixedly arranged at the front end of the outer cylinder, and a A rotating column, a third gear is fixedly arranged on both sides of the left and right sides of the rotating column, the detection cylinder mechanism includes a detection cylinder, a rotating shaft is rotatably arranged between the front and rear walls of the upper and lower parts of the inner cavity of the detection cylinder, a sleeve column is fixedly arranged on the outside of the rotating shaft, a plurality of first springs are evenly fixedly arranged on the outer surface of the sleeve column, and an arc-shaped contact piece is fixedly arranged between the ends of the first springs at the same horizontal height away from the rotating shaft, the cleaning cylinder mechanism includes a cleaning cylinder, a gear ring is fixedly arranged on the outer right side of the cleaning cylinder, a limiting ring is fixedly arranged on the outer middle fixed sleeve of the cleaning cylinder, a spiral frame is fixedly arranged on the inner wall of the cleaning cylinder, and the spiral frame A plurality of bristles are evenly fixedly arranged on the inner surface of the rotating frame, and the heat-resistant detection plate assembly includes a bottom plate, a plurality of bottom columns are evenly fixedly arranged on the top of the bottom plate, a first contact block is fixedly arranged on the top of each bottom column, a guide rod is penetrated between the bottom column and the inside of the first contact block, a second contact block is fixedly arranged on the top of the guide rod, an arc-shaped sheet is fixedly arranged on the top of the second contact block, the front and rear ends of the bottom of the arc-shaped sheet are fixedly connected to the top of the bottom plate by a second spring, a sealing plug is fixedly arranged on the front end of the bottom plate, and a plurality of warning lights are evenly fixedly arranged on the front end of the sealing plug.

[0006] Preferably, the left and right sides of the test box are fixedly provided with supporting plates, the tops of the two supporting plates are fixedly provided with connecting frames, and support rods are rotatably provided between the front and rear walls of the upper and lower parts of the inner cavity of the connecting frames.

[0007] Preferably, the outer fixing sleeve of the upper support rod is provided with a plurality of first guide rollers, and the outer fixing sleeve of the lower support rod is provided with a plurality of second guide rollers, and the number of the plurality of first guide rollers is the same as the number of the plurality of second guide rollers.

[0008] Preferably, a circle of balls is rotatably provided on the left and right side walls of the inner cavity of each guide tube, the second gear on the upper part is meshed with the first gear, and the third gear on the left part is meshed with the second gear on the lower part.

[0009] Preferably, the detection cylinder is fixedly connected to the right wall of the inner cavity of the test box, the gear ring is located on the right side of the outer cylinder, and the limit ring is rotatably connected to the inner wall of the outer cylinder.

[0010] Preferably, the gear ring is meshed with the third gear on the right, and the upper plurality of arc-shaped contact pieces, the upper rotating shaft, one of the alarm lights, the lower plurality of arc-shaped contact pieces, and the lower rotating shaft are electrically connected via wires.

[0011] Preferably, the front end of the upper rotating shaft passes through the front wall of the detection cylinder and is fixedly connected to the connecting rod, the bottom plate is slidably connected between the two limit blocks, and the sealing plug passes through the front wall of the test box and the front wall of the insulation box.

[0012] Preferably, the bottom plate, the bottom column, the first contact block, the second contact block and the warning light are electrically connected through a wire.

[0013] The present invention also provides a method for a performance test system of a distributed photovoltaic power station, and the specific method comprises the following steps:

[0014] Step 1: Use an external traction device to pass the cable to be tested between the first guide roller and the second guide roller on the right, and traction and stretching it to the left. During the process, the cable passes through the inside of the cleaning cylinder and the detection cylinder. The outer surface of the cable will contact the upper arc contact piece and the lower arc contact piece. During the movement of the cable, the friction force will drive the sleeve column and the rotating shaft to rotate, and then the first gear will rotate. Through the meshing connection between the second gear, the third gear and the cleaning cylinder mechanism, the cleaning cylinder is finally driven to rotate, and the spiral frame and the bristles rotate accordingly to clean the surface of the cable passing through, and sweep the dust and impurities adhering to the cable surface to the outside;

[0015] Step 2: If the outer surface of the clean cable is damaged and leaking, it is equivalent to connecting the power supply between the upper arc contact piece and the lower arc contact piece, and the alarm light on the same circuit is turned on. The alarm light flashes, indicating that the cable has leakage and insulation problems. If there is no leakage, the alarm light does not flash;

[0016] Step three, the cable enters the insulation box, passes through the inside of the guide tube, and finally passes through the first guide roller and the second guide roller on the left. It is tightened and limited by the external traction device, and the heating wire is energized and heated to keep the internal temperature of the insulation box at the set value, and heats the cable part in the insulation box. If the surface of the cable melts within a certain period of time, the rubber insulation layer on the surface droops downward due to gravity, squeezing the second contact block at the bottom downward so that the second contact block contacts the first contact block. At this time, the circuit between the guide rod, the second contact block and the warning light is turned on, and the warning light flashes to indicate that the heat resistance of the cable does not meet the standard. If the warning light does not flash to indicate, it means that the cable does not deform at the set temperature and the heat resistance meets the standard.

[0017] Preferably, the number of the guide tubes is the same as the number of the functional tube assemblies.

[0018] Beneficial Effects

[0019] The present invention provides a performance test system and method for a distributed photovoltaic power station. Compared with the prior art, it has the following beneficial effects:

[0020] 1. A method for a performance test system of a distributed photovoltaic power station, wherein a rotating shaft is rotatably arranged between the front and rear walls of the upper and lower parts of the inner cavity of a detection tube, a sleeve column is fixedly sleeved outside the rotating shaft, a plurality of first springs are evenly and fixedly arranged on the outer surface of the sleeve column, and arc-shaped contact pieces are fixedly arranged between the ends of the first springs at the same horizontal height away from the rotating shaft. Through the mutual cooperation among the rotating shaft, the sleeve column, the first spring and the arc-shaped contact piece, it is possible to accurately detect which part of the cable surface has leakage, and the insulation detection effect is good, the detection efficiency is high, and the practicability is strong.

[0021] 2. A method for a performance test system of a distributed photovoltaic power station, wherein a plurality of bottom columns are evenly fixed on the top of a bottom plate, a first contact block is fixed on the top of each bottom column, a guide rod is provided between the bottom column and the inside of the first contact block, a second contact block is fixed on the top of the guide rod, an arc-shaped sheet is fixed on the top of the second contact block, the front and rear ends of the bottom of the arc-shaped sheet are fixedly connected to the top of the bottom plate by a second spring, a sealing plug is fixed on the front end of the bottom plate, a plurality of warning lights are evenly fixed on the front end of the sealing plug, and through the mutual cooperation among the bottom plate, the first contact block, the second contact block and the arc-shaped sheet, the high temperature resistance and insulation of the cable can be tested simultaneously, the detection efficiency is greatly improved, and the cable has the value and significance of promotion.

[0022] 3. A method for a performance test system of a distributed photovoltaic power station, wherein a cleaning cylinder mechanism is arranged through the internal rotation of an outer cylinder, a first gear is arranged on the upper front end of the detection cylinder mechanism through the rotation of a connecting rod, a first limit plate is fixedly arranged in the middle of the front end of the detection cylinder mechanism, a rotating rod is passed through the interior of the first limit plate, a second gear is fixedly arranged on the upper and lower ends of the rotating rod, a second limit plate is fixedly arranged at the front end of the outer cylinder, a rotating column is passed through the interior of the second limit plate, and a third gear is fixedly arranged on the left and right sides of the rotating column, and the friction between the cable and the arc-shaped contact piece is utilized through the mutual cooperation among the gear ring, the spiral frame, the bristles and the third gear to drive the rotating shaft to rotate, thereby rotating the cleaning cylinder mechanism, driving the spiral frame and the bristles to rotate, and cleaning the surface through which the cable passes, and due to the special shape of the spiral frame, the cleaned impurities will be directly transported to the outside to avoid blockage.

[0023] 4. A method for a performance test system of a distributed photovoltaic power station, wherein a plurality of functional cylinder assemblies are evenly arranged through the right side of the test box from front to back, each functional cylinder assembly includes an outer cylinder and a detection cylinder mechanism, and through the mutual cooperation between a plurality of outer cylinders, a plurality of detection cylinder mechanisms and a plurality of guide tubes, a plurality of cables can be tested and tested, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 is a cross-sectional view of the test box of the present invention;

[0026] Figure 3 It is a front view of the functional tube assembly of the present invention;

[0027] Figure 4 is a cross-sectional view of the detection tube mechanism of the present invention;

[0028] Figure 5 It is a left side cross-sectional view of the detection tube mechanism of the present invention;

[0029] Figure 6 is a three-dimensional diagram of the cleaning cylinder mechanism of the present invention;

[0030] Figure 7 is a three-dimensional diagram of the spiral frame of the present invention;

[0031] Figure 8 is a cross-sectional view of the heat preservation box of the present invention;

[0032] Fig. 9 It is a left view of the heat-resistant detection board assembly of the present invention;

[0033] Fig.10 It is a cross-sectional view of the guide tube of the present invention.

[0034] In the figure: 1, test box; 2, bearing plate; 3, connecting frame; 4, support rod; 5, first guide roller; 6, second guide roller; 7, functional cylinder assembly; 71, outer cylinder; 72, detection cylinder mechanism; 721, detection cylinder; 722, rotating shaft; 723, sleeve column; 724, first spring; 725, arc-shaped contact piece; 73, cleaning cylinder mechanism; 731, cleaning cylinder; 732, gear ring; 733, limit ring; 734, spiral frame; 735, bristles; 74, first gear; 75, first limit plate ; 76, rotating rod; 77, second gear; 78, second limit plate; 79, rotating column; 710, third gear; 8, insulation box; 9, inner box; 10, heating wire; 11, limit block; 12, heat-resistant detection plate assembly; 121, bottom plate; 122, bottom column; 123, first contact block; 124, guide rod; 125, second contact block; 126, arc-shaped sheet; 127, second spring; 128, sealing plug; 129, warning light; 13, guide tube; 14, ball; 15, alarm light. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-10The present invention provides a technical solution: a performance test system for a distributed photovoltaic power station, comprising a test box 1, a plurality of functional tube components 7 are evenly arranged on the right side of the test box 1 from front to back, a heat preservation box 8 is fixedly connected to the middle of the inner cavity of the test box 1 through a thin column, an inner box 9 is fixedly arranged in the inner cavity of the heat preservation box 8, a plurality of circles of electric heating wires 10 are fixedly arranged between the inner wall of the heat preservation box 8 and the outer wall of the inner box 9, a limit block 11 is fixedly arranged on both sides of the left and right sides of the inner cavity bottom of the inner box 9, a heat-resistant detection board component 12 is arranged between the two limit blocks 11, a plurality of guide tubes 13 are evenly arranged on the left side of the test box 1 from front to back, a plurality of warning lights 15 are evenly fixedly arranged on the top right side of the test box 1 from front to back, and each functional tube component 7 include an outer cylinder 71 and a detection cylinder mechanism 72, the inner part of the outer cylinder 71 is provided with a cleaning cylinder mechanism 73 for rotation, the upper part of the front end of the detection cylinder mechanism 72 is provided with a first gear 74 for rotation through a connecting rod, a first limit plate 75 is fixedly provided at the middle of the front end of the detection cylinder mechanism 72, a rotating rod 76 is passed through the inner part of the first limit plate 75, and a second gear 77 is fixedly provided at the upper and lower ends of the rotating rod 76, a second limit plate 78 is fixedly provided at the front end of the outer cylinder 71, a rotating column 79 is passed through the inner part of the second limit plate 78, and a third gear 710 is fixedly provided on the left and right sides of the rotating column 79, and the detection cylinder mechanism 72 includes a detection cylinder 721, and a rotating shaft 722 is rotatably provided between the front and rear walls of the upper and lower parts of the inner cavity of the detection cylinder 721, and the outer fixed sleeve of the rotating shaft 722 A sleeve column 723 is provided, and a plurality of first springs 724 are evenly and fixedly provided on the outer surface of the sleeve column 723. An arc-shaped contact piece 725 is fixedly provided between the ends of the first springs 724 at the same horizontal height away from the rotating shaft 722. Through the mutual cooperation among the rotating shaft 722, the sleeve column 723, the first spring 724 and the arc-shaped contact piece 725, it is possible to accurately detect which part of the cable surface has leakage, and the insulation detection effect is good, the detection efficiency is high, and the practicability is strong. The cleaning cylinder mechanism 73 includes a cleaning cylinder 731, and a gear ring 732 is fixedly provided on the outer right side of the cleaning cylinder 731, and a limiting ring 733 is fixedly provided on the outer middle fixed sleeve of the cleaning cylinder 731. A spiral frame 734 is fixedly provided on the inner wall of the cleaning cylinder 731, and the inner surface of the spiral frame 734 is evenly fixed. A plurality of bristles 735 are provided, and through the mutual cooperation among the gear ring 732, the spiral frame 734, the bristles 735 and the third gear 710, the friction between the cable and the arc-shaped contact piece 725 is utilized to drive the rotating shaft 722 to rotate, thereby rotating the cleaning cylinder mechanism 73, driving the spiral frame 734 and the bristles 735 to rotate, and cleaning the surface through which the cable passes. Due to the special shape of the spiral frame 734, the cleaned impurities will be directly transported to the outside to avoid blockage. The heat-resistant detection plate assembly 12 includes a bottom plate 121, and a plurality of bottom columns 122 are evenly fixedly provided on the top of the bottom plate 121. A first contact block 123 is fixedly provided on the top of each bottom column 122, and a guide rod 124 is provided through the inside of the bottom column 122 and the first contact block 123.A second contact block 125 is fixedly provided on the top of the guide rod 124, an arc-shaped thin sheet 126 is fixedly provided on the top of the second contact block 125, the front and rear ends of the bottom of the arc-shaped thin sheet 126 are fixedly connected to the top of the bottom plate 121 by a second spring 127, a sealing plug 128 is fixedly provided on the front end of the bottom plate 121, and a plurality of warning lights 129 are evenly fixedly provided on the front end of the sealing plug 128. Through the mutual cooperation between the bottom plate 121, the first contact block 123, the second contact block 125 and the arc-shaped thin sheet 126, the high temperature resistance and insulation of the cable can be improved. The test box 1 can be tested at the same time, and the test efficiency is greatly improved, which has the value and significance of promotion. The left and right sides of the test box 1 are fixed with supporting plates 2, and the tops of the two supporting plates 2 are fixed with connecting frames 3. The connecting frames 3 are rotatably provided with support rods 4 between the front and rear walls of the upper and lower parts of the inner cavity. The outer fixed sleeve of the upper support rod 4 is provided with a plurality of first guide rollers 5, and the outer fixed sleeve of the lower support rod 4 is provided with a plurality of second guide rollers 6. The number of the plurality of first guide rollers 5 is the same as the number of the plurality of second guide rollers 6. The left and right side walls of the inner cavity of each guide tube 13 are rotatably provided with A circle of balls 14, the upper second gear 77 is meshed with the first gear 74, the left third gear 710 is meshed with the lower second gear 77, the detection cylinder 721 is fixedly connected to the right wall of the inner cavity of the test box 1, the gear ring 732 is located on the right side of the outer cylinder 71, the limit ring 733 is rotatably connected to the inner wall of the outer cylinder 71, the gear ring 732 is meshed with the right third gear 710, and the upper plurality of arc-shaped contact pieces 725, the upper shaft 722, one of the alarm lights 15, the lower plurality of arc-shaped contact pieces 725, and the lower shaft 722 are connected by wires. Electrical connection, the front end of the upper rotating shaft 722 penetrates the front wall of the detection cylinder 721 and is fixedly connected to the connecting rod, the bottom plate 121 is slidably connected between the two limit blocks 11, the sealing plug 128 penetrates between the front wall of the test box 1 and the front wall of the insulation box 8, the bottom plate 121, the bottom column 122, the first contact block 123, the second contact block 125 and the prompt light 129 are electrically connected through wires, and through the mutual cooperation between the outer cylinders 71, the detection cylinder mechanisms 72 and the guide tubes 13, multiple cables can be tested, which is more practical.

[0037] The embodiment of the present invention also provides a method for a performance test system of a distributed photovoltaic power station, and the specific method includes the following steps:

[0038] Step 1: Use an external traction device to pass the cable to be tested through the first guide roller 5 and the second guide roller 6 on the right side, and traction and stretching it to the left. During the process, the cable passes through the inside of the cleaning cylinder 731 and the detection cylinder 721. The outer surface of the cable will contact the upper arc contact piece 725 and the lower arc contact piece 725. During the movement of the cable, the friction force will drive the sleeve column 723 and the rotating shaft 722 to rotate, and then the first gear 74 will rotate. Through the meshing connection between the second gear 77, the third gear 710 and the cleaning cylinder mechanism 73, the cleaning cylinder 731 is finally driven to rotate, and the spiral frame 734 and the brush 735 rotate accordingly, cleaning the surface of the cable passing through, and sweeping the dust and impurities adhering to the cable surface to the outside;

[0039] Step 2: If the outer surface of the clean cable is damaged and leaking, it is equivalent to connecting the power supply between the upper arc contact piece 725 and the lower arc contact piece 725, and the alarm light 15 on the same circuit is turned on. The alarm light 15 flashes, indicating that the cable has leakage and insulation problems. If there is no leakage, the alarm light 15 does not flash;

[0040] Step three, the cable enters the insulation box 8, passes through the inside of the guide tube 13, and finally passes through the left first guide roller 5 and the second guide roller 6, and is tightened and limited by the external traction device. The heating wire 10 is energized and heated to keep the internal temperature of the insulation box 8 at the set value, and heats the cable part located in the insulation box 8. If the surface of the cable melts within a certain period of time, the rubber insulating layer of the surface droops downward due to the action of gravity, and squeezes the lower second contact block 125 downward, so that the second contact block 125 contacts the first contact block 123. At this time, the circuit between the guide rod 124, the second contact block 125, and the warning light 129 is turned on, and the warning light 129 flashes to indicate that the heat resistance of the cable does not meet the standard. If the warning light 129 does not flash to indicate, it means that the cable does not deform at the set temperature and the heat resistance meets the standard.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance test system for a distributed photovoltaic power station, comprising a test box (1), characterized in that: A plurality of functional cylinder assemblies (7) are evenly arranged on the right side of the test box (1) from front to back, a heat preservation box (8) is fixedly connected to the middle of the inner cavity of the test box (1) through a thin column, an inner box (9) is fixedly arranged in the inner cavity of the heat preservation box (8), a plurality of coils of electric heating wire (10) are fixedly arranged between the inner wall of the heat preservation box (8) and the outer wall of the inner box (9), limit blocks (11) are fixedly arranged on both sides of the bottom of the inner cavity of the inner box (9), and a heat-resistant detection plate assembly (12) is arranged between the two limit blocks (11), a plurality of guide tubes (13) are evenly arranged on the left side of the test box (1) from front to back, and a plurality of warning lights (15) are evenly fixedly arranged on the right side of the top of the test box (1) from front to back; Each of the functional cylinder assemblies (7) comprises an outer cylinder (71) and a detection cylinder mechanism (72); a cleaning cylinder mechanism (73) is rotatably arranged inside the outer cylinder (71); a first gear (74) is rotatably arranged at the upper front end of the detection cylinder mechanism (72) through a connecting rod; a first limiting plate (75) is fixedly arranged in the middle of the front end of the detection cylinder mechanism (72); a rotating rod (76) is passed through the interior of the first limiting plate (75); a second gear (77) is fixedly arranged at the upper and lower ends of the rotating rod (76); a second limiting plate (78) is fixedly arranged at the front end of the outer cylinder (71); a rotating column (79) is passed through the interior of the second limiting plate (78); and third gears (710) are fixedly arranged on both the left and right sides of the rotating column (79); The detection cylinder mechanism (72) comprises a detection cylinder (721), a rotating shaft (722) is rotatably arranged between the front and rear walls of the upper and lower parts of the inner cavity of the detection cylinder (721), a sleeve column (723) is fixedly sleeved on the outside of the rotating shaft (722), a plurality of first springs (724) are evenly fixedly arranged on the outer surface of the sleeve column (723), and an arc-shaped contact piece (725) is fixedly arranged between the ends of the first springs (724) away from the rotating shaft (722) at the same horizontal height; The cleaning cylinder mechanism (73) comprises a cleaning cylinder (731), a gear ring (732) is provided on the right fixed sleeve outside the cleaning cylinder (731), a limiting ring (733) is provided on the middle fixed sleeve outside the cleaning cylinder (731), a spiral frame (734) is fixedly provided on the inner wall of the cleaning cylinder (731), and a plurality of bristles (735) are evenly fixedly provided on the inner surface of the spiral frame (734); The heat-resistant detection plate assembly (12) comprises a bottom plate (121), a plurality of bottom columns (122) are evenly fixedly arranged on the top of the bottom plate (121), a first contact block (123) is fixedly arranged on the top of each bottom column (122), a guide rod (124) is arranged between the inside of the bottom column (122) and the first contact block (123), a second contact block (125) is fixedly arranged on the top of the guide rod (124), an arc-shaped thin sheet (126) is fixedly arranged on the top of the second contact block (125), the front and rear ends of the bottom of the arc-shaped thin sheet (126) are fixedly connected to the top of the bottom plate (121) by a second spring (127), a sealing plug (128) is fixedly arranged on the front end of the bottom plate (121), and a plurality of warning lights (129) are evenly fixedly arranged on the front end of the sealing plug (128).

2. A performance test system for a distributed photovoltaic power station according to claim 1, characterized in that: The left and right sides of the test box (1) are both fixedly provided with supporting plates (2), the tops of the two supporting plates (2) are both fixedly provided with connecting frames (3), and support rods (4) are both rotatably provided between the front and rear walls of the upper and lower parts of the inner cavity of the connecting frames (3).

3. A distributed photovoltaic power station performance test system according to claim 2, characterized in that: The outer fixed sleeve of the upper support rod (4) is provided with a plurality of first guide rollers (5), and the outer fixed sleeve of the lower support rod (4) is provided with a plurality of second guide rollers (6), and the number of the plurality of first guide rollers (5) is the same as the number of the plurality of second guide rollers (6).

4. A performance test system for a distributed photovoltaic power station according to claim 3, characterized in that: A circle of balls (14) is rotatably provided on the left and right side walls of the inner cavity of each guide tube (13); the upper second gear (77) is meshed with the first gear (74); and the left third gear (710) is meshed with the lower second gear (77).

5. A performance test system for a distributed photovoltaic power station according to claim 4, characterized in that: The detection cylinder (721) is fixedly connected to the right wall of the inner cavity of the test box (1), the gear ring (732) is located on the right side of the outer cylinder (71), and the limit ring (733) is rotatably connected to the inner wall of the outer cylinder (71).

6. A performance test system for a distributed photovoltaic power station according to claim 5, characterized in that: The gear ring (732) is meshed with the third gear (710) on the right, and the upper plurality of arc-shaped contact pieces (725), the upper rotating shaft (722), one of the alarm lights (15), the lower plurality of arc-shaped contact pieces (725), and the lower rotating shaft (722) are electrically connected via wires.

7. A performance test system for a distributed photovoltaic power station according to claim 6, characterized in that: The front end of the upper rotating shaft (722) passes through the front wall of the detection tube (721) and is fixedly connected to the connecting rod, the bottom plate (121) is slidably connected between the two limit blocks (11), and the sealing plug (128) passes through the front wall of the test box (1) and the front wall of the insulation box (8).

8. A performance test system for a distributed photovoltaic power station according to claim 7, characterized in that: The bottom plate (121), the bottom column (122), the first contact block (123), the second contact block (125) and the warning light (129) are electrically connected via wires.

9. A method for implementing the performance test system of the distributed photovoltaic power station according to claim 8, characterized in that: The method comprises the following steps: Step 1: Use an external traction device to pass the cable to be tested through the first guide roller (5) and the second guide roller (6) on the right side, and traction and stretching the cable to the left. During the process, the cable passes through the inside of the cleaning cylinder (731) and the detection cylinder (721). The outer surface of the cable will contact the upper arc contact piece (725) and the lower arc contact piece (725). During the movement of the cable, the friction force will drive the sleeve (723) and the rotating shaft (722) to rotate, thereby causing the first gear (74) to rotate, and finally driving the cleaning cylinder (731) to rotate through the meshing connection between the second gear (77), the third gear (710) and the cleaning cylinder mechanism (73). The spiral frame (734) and the bristles (735) rotate accordingly, cleaning the surface of the cable passing through, and sweeping the dust and impurities adhering to the cable surface to the outside; Step 2: If the outer surface of the clean cable is damaged and leaking, it is equivalent to connecting the power supply between the upper arc contact piece (725) and the lower arc contact piece (725), and the alarm light (15) on the same circuit is turned on. The alarm light (15) flashes, indicating that the cable has leakage and insulation problems. If there is no leakage, the alarm light (15) does not flash; Step 3, the cable enters the insulation box (8), passes through the inside of the guide tube (13), and finally passes through the left first guide roller (5) and the second guide roller (6), and is tightened and limited by the external traction device. The electric heating wire (10) is energized and heated to keep the internal temperature of the insulation box (8) at a set value, and the cable part located in the insulation box (8) is heated. If the surface of the cable melts within a certain period of time, the rubber insulation layer of the surface falls downward under the action of gravity, pressing the lower second contact block (125) downward, so that the second contact block (125) contacts the first contact block (123). At this time, the circuit between the guide rod (124), the second contact block (125), and the warning light (129) is connected, and the warning light (129) flashes to indicate that the heat resistance of the cable does not meet the standard. If the warning light (129) does not flash to indicate, it means that the cable does not deform at the set temperature and the heat resistance meets the standard.

10. A method for a performance test system of a distributed photovoltaic power station according to claim 9, characterized in that: The number of the guide tubes (13) is the same as the number of the functional cylinder assemblies (7).

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