Photovoltaic array automatic inspection system and method

Abstract

The invention provides a photovoltaic array automatic inspection system which is formed by connecting a plurality of photovoltaic panels side by side and comprises a supporting column, a plurality of hoops are arranged at the upper end of the supporting column, vertical central supporting purlines and inclined lateral supporting purlines are arranged on the two sides of the hoops, and the central supporting purlines and the lateral supporting purlines are arranged on the upper end of the supporting column. An automatic inspection device is arranged at the lower end of the vertical purline between the two central supporting purlines, a suspended hanging cable is arranged on the automatic inspection device, a control module is hung on the hanging cable, and a vibration sensor is arranged on the supporting column. The control module moves along the hanging cable to generate an action source, vibration data are detected to judge whether a loosening sign occurs, the hanging cable serves as a hanging tool and also serves as a power source negative electrode, and the situation that connection cannot be achieved due to rigid connection caused by butt joint size errors between different photovoltaic panels is avoided through flexible connection of the hanging cable. Whether looseness occurs or not and the specific position of the looseness are automatically detected through data comparison, the automation degree is high, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a photovoltaic array automatic inspection system and method. Background Art

[0002] Photovoltaic arrays are DC power generation units composed of several photovoltaic modules mechanically and electrically assembled in a certain way and with a fixed support structure. Photovoltaic arrays are in an outdoor natural environment for a long time. Affected by the vibration caused by strong winds, some array fastening bolts are prone to loosening, which may cause safety operation risks. According to the regulations, it is necessary to conduct a comprehensive inspection of the foundation, bracket and grounding grid of the photovoltaic array every 3 months. Therefore, it is particularly important to check the overall stability of the array in a timely and effective manner, find the loose bolts, and eliminate them. There are many photovoltaic arrays on each photovoltaic project site. There are thousands of photovoltaic arrays, which brings great difficulty to on-site inspection. In addition, the height of the arrays of various photovoltaic projects varies greatly according to different designs. Some project arrays are lower and more convenient to inspect, while some project arrays are higher and it is very inconvenient to inspect the upper part of the array. Moreover, visual inspection alone is generally ineffective and cannot accurately judge the looseness of the array bolts. Summary of the invention

[0003] The present invention provides a photovoltaic array automatic inspection system and method, which can automatically detect the photovoltaic array and output the results.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A photovoltaic array automatic inspection system is disclosed. The photovoltaic array is formed by connecting a plurality of photovoltaic panels in parallel. The photovoltaic panels are mounted on support columns. A plurality of clamps are arranged on the upper end of the support columns. Vertical central support purlins and oblique lateral support purlins are arranged on both sides of the clamps. The central support purlins and lateral support purlins are fixedly connected to the vertical purlins. A plurality of transverse purlins are arranged in parallel on the vertical purlins. The photovoltaic panels are connected to the transverse purlins. An automatic inspection device is arranged at the lower end of the vertical purlins between the two central support purlins. A hanging rope is arranged on the automatic inspection device. A control module is hung on the hanging rope. A vibration sensor is arranged on the support column. The control module moves in a controlled manner along the hanging rope between the photovoltaic panels. Whether there is looseness is checked by detecting data from the vibration sensor.

[0005] The above-mentioned automatic inspection device includes a cable bracket connected to the vertical purlin, the cable bracket is arranged vertically, and a cable tube is provided at the end of the cable bracket. The cable passes through and is fixed in multiple cable tubes. The shuttle can roll along the cable, and the lower end of the shuttle is connected to the control module.

[0006] A base plate is provided on one side of the above-mentioned shuttle, and a rotatably connected roller is provided on the base plate. A mounting plate is provided on the other side of the roller. The base plate is obliquely turned and provided with a block at the bottom. The mounting plate is detachably fixed so that a hanging rope can be inserted and limited between the mounting plate and the block. The roller shaft is connected to the rolling motor, and the rolling motor is controlled by the control module below.

[0007] The above-mentioned shuttle is provided with two rollers, one of which is made of non-conductive material and its rotating shaft is connected to the rolling motor, and the other roller is made of conductive material and its rotating shaft is connected to the negative power supply module. The hanging rope is connected to the negative pole of the power supply, and an elastic positive head is provided under the control module. When the elastic positive head moves along the hanging rope, it can contact the positive pole plate at the bottom of the positive pole bracket. One side of the mounting plate is rotatably connected to a roller rotating shaft, and the other side is provided with a sliding groove at the other roller rotating shaft for the hanging rope to be inserted or removed.

[0008] The above-mentioned shuttle is provided with two and is respectively connected to the support arms on both sides of the control module, and the cables of the rolling motor and the negative electrode power taking module enter the control module through the support arms.

[0009] The control module is provided with a counterweight slot, which is used to adjust the center of the control module.

[0010] The above-mentioned positive electrode bracket is arranged in plurality along the hanging rope.

[0011] The above-mentioned hanging rope bracket is provided with two hanging rope tubes and two hanging ropes, and the control module is provided with a shuttle at the top and bottom to be clamped with the hanging rope and the hanging rope tube; The hanging rope tube arranged at the end is provided with a conical tension sleeve, and the conical tension sleeve is tightened and fixed with the hanging rope.

[0012] The control module is provided with a wireless communication module, which can communicate wirelessly with an external controller; A first vibration sensor and a second vibration sensor are respectively provided at the central supporting purlins near both sides in the supporting column.

[0013] Using the above-mentioned automatic inspection method of a photovoltaic array automatic inspection system, the inspection steps are as follows: Step 1: The control module stops at one of the positive pole brackets according to the setting, and the elastic positive pole head contacts the positive pole plate on the positive pole bracket, and the control module is charged through the positive pole of the positive pole plate and the negative pole of the hanging rope; Step 2: Tighten all central supporting purlins, lateral supporting purlins, vertical purlins, transverse purlins and photovoltaic panels; Step 3: Control the control module to move along the hanging rope at a set speed, detect the data of the first vibration sensor and the second vibration sensor, and obtain a normal value range after filtering and interference elimination; Step 4: loosen the central support purlin, lateral support purlin, vertical purlin, transverse purlin and one of the photovoltaic panels on a certain photovoltaic panel respectively, and then control the control module to move along the hanging rope at a set speed, detect the data of the first vibration sensor and the second vibration sensor, and obtain the sensor value range of each loosening after filtering and interference elimination, and finally re-tighten all; Step 5. When the set detection time is reached, the control module starts automatically and moves along the hanging rope. The sensor data at each support column is compared with the sensor value range of each loose sensor obtained in step 4 to determine which photovoltaic panel is loose and where it is loose, and the judgment result is transmitted to the remote control center or authorized mobile terminal.

[0014] The present invention provides a photovoltaic array automatic inspection system and method. An automatic inspection module is arranged on a vertical purlin. The control module moves along a hanging cable to generate an action source, and detects vibration data generated by the action source to determine whether there is a sign of looseness. The hanging cable serves as both a hanger and a negative pole of a power supply. The soft connection of the hanging cable avoids the defect of a hard connection that cannot be connected due to a docking size error between different photovoltaic panels and cannot provide a track for movement. By comparing data, it is automatically detected whether there is looseness and the specific location of the looseness. The degree of automation is high, and the detection efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of the inspection system of the present invention; Figure 2 for Figure 2 A partial enlarged schematic diagram of Figure 3 The structure of the automatic inspection device is shown in FIG. Figure 1 ; Figure 4 is a top view schematic diagram of a support column; Figure 5 The structure of the automatic inspection device is shown in FIG. Figure 2 ; Figure 6 for Figure 5 A partial enlarged schematic diagram of Figure 7 The structure of the shuttle is shown in Figure 1. Figure 1 ; Figure 8 The structure of the shuttle is shown in Figure 1. Figure 2 ; Fig. 9 It is a schematic diagram of the cable hanging tube structure at the end; Fig.10A schematic diagram of the structure of an optimized automatic inspection device; Fig.11 for Fig.10 A partial enlarged schematic diagram of Fig.12 Schematic diagram of the optimized control module structure.

[0016] Among them: support column 3, clamp 2, central support purlin 3, lateral support purlin 4, vertical purlin 5, transverse purlin 6, photovoltaic panel 7, automatic inspection device 8, hanging cable bracket 81, hanging cable tube 82, conical tension sleeve 821, hanging cable 83, shuttle 84, base plate 841, roller 842, mounting plate 843, slide groove 844, block 845, control module 85, rolling motor 851, negative electrode power extraction module 852, elastic positive electrode head 86, positive electrode bracket 87, first vibration sensor 9, second vibration sensor 10, counterweight slot 11, support arm 12. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following content will systematically and completely describe the specific technical solutions of the present invention in combination with the drawings provided according to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Example: like Figure 1-12 As shown in the figure, a photovoltaic array automatic inspection system is provided, wherein the photovoltaic array is formed by connecting a plurality of photovoltaic panels 7 in parallel, and the photovoltaic panels 7 are mounted on a supporting column 3, and a plurality of clamps 2 are provided on the upper end of the supporting column 3, and a vertical central supporting purlin 3 and an oblique lateral supporting purlin 4 are provided on both sides of the clamps 2, the central supporting purlin 3 and the lateral supporting purlin 4 are fixedly connected with the vertical purlin 5, and a plurality of transverse purlins 6 are arranged in parallel on the vertical purlin 5, and the photovoltaic panels 7 are connected with the transverse purlin 6, and an automatic inspection device 8 is provided at the lower end of the vertical purlin 5 between the two central supporting purlins 3, and a hanging rope 83 is provided on the automatic inspection device 8, and a control module 85 is hung on the hanging rope 83, and a vibration sensor is provided on the supporting column 3, and the control module 85 is controlled to move between the photovoltaic panels 7 along the hanging rope 83, and whether there is looseness is checked by detecting the data of the vibration sensor.

[0019] Due to the deadweight of the control module 85, when the control module 85 moves along the hanging rope 83 between the photovoltaic panels 7, a downward force will be generated on the vertical purlins 5. The vertical purlins 5 are directly or indirectly connected to the central supporting purlins 3, the lateral supporting purlins 4, the vertical purlins 5 and the transverse purlins 6. When there are signs of looseness, the vibration sensor will receive abnormal data, and the looseness can be detected by identifying the abnormal data. According to the I / O ports of the vibration sensors on different support columns 3, it can be known which photovoltaic panel 7 has been installed loosely, and it can be judged where the looseness has occurred based on the different data.

[0020] The above-mentioned automatic inspection device 8 includes a hanging cable bracket 81 connected to the vertical purlin 5, the hanging cable bracket 81 is arranged vertically, and a hanging cable tube 82 is provided at the end of the hanging cable bracket 81. The hanging cable 83 passes through and is fixed in multiple hanging cable tubes 82. The shuttle 84 can roll along the hanging cable 83, and the lower end of the shuttle 84 is connected to the control module 85.

[0021] A base plate 841 is provided on one side of the above-mentioned shuttle 84, and a rotatably connected roller 842 is provided on the base plate 841. A mounting plate 843 is provided on the other side of the roller 842. The base plate 841 is obliquely turned below and provided with a clamping block 845. The mounting plate 843 is detachably fixed so that the hanging rope 83 can be inserted and limited between the mounting plate 843 and the clamping block 845. The rotating shaft of the roller 842 is connected to the rolling motor 851, and the rolling motor 851 is controlled by the control module 85 below.

[0022] The above-mentioned shuttle 84 is provided with two rollers 842, one of which is made of non-conductive material and its rotating shaft is connected to the rolling motor 851, and the other roller 842 is made of conductive material and its rotating shaft is connected to the negative power supply module 852. The hanging rope 83 is connected to the negative pole of the power supply, and an elastic positive head 86 is provided under the control module 85. When the elastic positive head 86 moves along the hanging rope 83, it can contact the positive pole plate at the bottom of the positive bracket 87. One side of the mounting plate 843 is rotatably connected to the rotating shaft of a roller 842, and the other side is provided with a slide groove 844 at the rotating shaft of the other roller 842 for the hanging rope 83 to be inserted or removed.

[0023] By setting two rollers 842, on the one hand, the two rollers hung on the hanging rope 83 have greater stability, so that a more uniform force is generated when the control module 85 moves. On the other hand, one roller 842 is used as a power source and the other roller 842 is used as a negative electrode for power extraction. When the elastic positive electrode head 86 stops on the positive electrode bracket 87, the control module 85 can be charged.

[0024] The above-mentioned shuttle 84 is provided with two and is respectively connected to the support arms 12 on both sides of the control module 85 , and the cables of the rolling motor 851 and the negative electrode power extraction module 852 enter the control module 85 through the support arms 12 .

[0025] The control module 85, the support arm 12 and the hanging rope 83 are formed into a triangle by two sliding shuttles 84, so that the structure is more stable and the movement is more stable when walking.

[0026] The control module 85 is provided with a counterweight groove 11 , and the counterweight groove 11 is used to adjust the center of the control module 85 .

[0027] By adjusting the weight level position of the counterweight in the counterweight slot 11, the center of the control module 85 is coplanar with the contact line of the hanging rope 83 and the roller 842, so that the control module 85 is in a vertical state when naturally hung, which can enhance the stability of movement.

[0028] The positive electrode brackets 87 are provided in plurality along the hanging rope 83 .

[0029] The above-mentioned hanging rope bracket 81 is provided with two hanging rope tubes 82 and two hanging ropes 83, and the control module 85 is provided with a shuttle 84 at the top and bottom to be clamped with the hanging rope 83 and the hanging rope tube 82; The hanging rope tube 82 disposed at the end is provided with a conical tension sleeve 821 , and the conical tension sleeve 821 is tensioned and fixed to the hanging rope 83 .

[0030] The control module 85 is provided with a wireless communication module, which can communicate wirelessly with an external controller; A first vibration sensor 9 and a second vibration sensor 10 are respectively provided at the central supporting purlins 3 near both sides in the supporting column 3 .

[0031] Using the above-mentioned automatic inspection method of a photovoltaic array automatic inspection system, the inspection steps are as follows: Step 1: The control module 85 stops at one of the positive pole brackets 87 according to the setting, and the elastic positive pole head 86 contacts the positive pole plate on the positive pole bracket 87, and the control module 85 is charged through the positive pole of the positive pole plate and the negative pole of the hanging rope 83; Step 2: Tighten all central supporting purlins 3, lateral supporting purlins 4, vertical purlins 5, transverse purlins 6 and photovoltaic panels 7; Step 3: Control the control module 85 to move along the hanging rope 83 at a set speed, detect the data of the first vibration sensor 9 and the second vibration sensor 10, and obtain a normal value range after filtering and interference elimination; Step 4: loosen one of the central support purlin 3, the lateral support purlin 4, the vertical purlin 5, the transverse purlin 6 and the photovoltaic panel 7 on a certain photovoltaic panel 7, and then control the control module 85 to move along the hanging rope 83 at a set speed, detect the data of the first vibration sensor 9 and the second vibration sensor 10, and obtain the sensor value range of each looseness after filtering and interference elimination, and finally re-tighten all; Step 5. When the set detection time is reached, the control module 85 starts automatically and moves along the hanging rope 83. The sensor data at each support column 3 is compared with the sensor value range of each looseness obtained in step 4 to determine which photovoltaic panel 7 is loose and where it is loose, and the judgment result is transmitted to the remote control center or authorized mobile terminal.

Claims

1. A photovoltaic array automatic inspection system, wherein the photovoltaic array is formed by connecting a plurality of photovoltaic panels (7) in parallel, characterized in that: The photovoltaic panel (7) is installed on a support column (3). A plurality of hoops (2) are provided at the upper end of the support column (3). A vertical central support purlin (3) and an oblique lateral support purlin (4) are provided on both sides of the hoops (2). The central support purlin (3) and the lateral support purlin (4) are fixedly connected to the vertical purlin (5). A plurality of transverse purlins (6) are arranged side by side on the vertical purlin (5). The photovoltaic panel (7) is connected to the transverse purlin (6). An automatic inspection device (8) is provided at the lower end of the vertical purlin (5) between the two central support purlins (3). A hanging rope (83) is provided on the automatic inspection device (8). A control module (85) is hung on the hanging rope (83). A vibration sensor is provided on the support column (3). The control module (85) moves in a controlled manner between the photovoltaic panels (7) along the hanging rope (83). Whether there is looseness is detected by detecting data from the vibration sensor.

2. According to the photovoltaic array automatic inspection system described in claim 1, it is characterized in that: The automatic inspection device (8) comprises a hanging cable bracket (81) connected to the vertical purlin (5), the hanging cable bracket (81) is arranged vertically, a hanging cable tube (82) is provided at the end of the hanging cable bracket (81), a hanging cable (83) passes through and is fixed in the plurality of hanging cable tubes (82), a shuttle (84) can roll along the hanging cable (83), and the lower end of the shuttle (84) is connected to the control module (85).

3. According to the photovoltaic array automatic inspection system described in claim 2, it is characterized in that: A base plate (841) is provided on one side of the shuttle (84), a rotatably connected roller (842) is provided on the base plate (841), a mounting plate (843) is provided on the other side of the roller (842), a clamping block (845) is provided at the bottom of the base plate (841), the mounting plate (843) is detachably fixed so that a hanging rope (83) can be inserted between the mounting plate (843) and the clamping block (845) and limited in position, the rotating shaft of the roller (842) is connected to a rolling motor (851), and the rolling motor (851) is controlled by a control module (85) at the bottom.

4. According to the photovoltaic array automatic inspection system described in claim 3, it is characterized in that: The shuttle (84) is provided with two rollers (842), one of which is made of non-conductive material and has a rotating shaft connected to a rolling motor (851), and the other roller (842) is made of conductive material and has a rotating shaft connected to a negative-electrode power extraction module (852). The hanging rope (83) is connected to the negative pole of the power source, and an elastic positive electrode head (86) is provided below the control module (85). When the elastic positive electrode head (86) moves along the hanging rope (83), it can contact the positive electrode plate at the bottom of the positive pole bracket (87). One side of the mounting plate (843) is rotatably connected to the rotating shaft of one roller (842), and the other side is provided with a slide groove (844) at the rotating shaft of the other roller (842) for the hanging rope (83) to be inserted into or removed.

5. According to the photovoltaic array automatic inspection system described in claim 4, it is characterized in that: The shuttle (84) is provided with two arms (12) respectively connected to the support arms (12) on both sides of the control module (85); the cables of the rolling motor (851) and the negative electrode power extraction module (852) enter the control module (85) through the support arms (12).

6. According to the photovoltaic array automatic inspection system described in claim 5, it is characterized in that: The control module (85) is provided with a counterweight groove (11), and the counterweight groove (11) is used to adjust the center of the control module (85).

7. A photovoltaic array automatic inspection system according to claim 6, characterized in that: A plurality of positive electrode brackets (87) are provided along the hanging rope (83).

8. A photovoltaic array automatic inspection system according to claim 7, characterized in that: The rope bracket (81) is provided with two upper and lower rope tubes (82) and two ropes (83); the control module (85) is provided with upper and lower shuttles (84) respectively, which are clamped with the ropes (83) and the rope tubes (82); The hanging rope tube (82) arranged at the end is provided with a conical tension sleeve (821), and the conical tension sleeve (821) and the hanging rope (83) are tensioned and fixed.

9. A photovoltaic array automatic inspection system according to claim 8, characterized in that: The control module (85) is provided with a wireless communication module, and the wireless communication module can communicate wirelessly with an external controller; A first vibration sensor (9) and a second vibration sensor (10) are respectively provided at the central supporting purlins (3) close to both sides in the supporting column (3).

10. An automatic inspection method using a photovoltaic array automatic inspection system according to claim 9, characterized in that: The steps for checking are: Step 1: The control module (85) stops at one of the positive electrode brackets (87) according to the setting, and the elastic positive electrode head (86) contacts the positive electrode plate on the positive electrode bracket (87), and the control module (85) is charged through the positive power supply electrode of the positive electrode plate and the negative power supply electrode of the hanging rope (83); Step 2: tighten all the central supporting purlins (3), lateral supporting purlins (4), vertical purlins (5), transverse purlins (6) and photovoltaic panels (7); Step 3: Control the control module (85) to move along the hanging rope (83) at a set speed, detect the data of the first vibration sensor (9) and the second vibration sensor (10), and obtain a normal value range after filtering and interference elimination; Step 4: loosen one of the central support purlin (3), the lateral support purlin (4), the vertical purlin (5), the transverse purlin (6) and the photovoltaic panel (7) on a photovoltaic panel (7), and then control the control module (85) to move along the hanging rope (83) at a set speed to detect the data of the first vibration sensor (9) and the second vibration sensor (10), and obtain the sensor value range for each loosening after filtering and interference elimination, and finally re-tighten all of them; Step 5. When the set detection time is reached, the control module (85) starts automatically and moves along the hanging rope (83), and compares the sensor data at each support column (3) with the sensor value range of each loose sensor obtained in step 4 to determine which photovoltaic panel (7) is loose and where it is loose, and transmits the judgment result to a remote control center or an authorized mobile terminal.

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