A self-shading solar panel inspection and cleaning method and system

Abstract

The embodiment of the present application discloses a kind of self-shielding solar panel inspection cleaning method and system, it is first by to solar panel is divided into several unit areas and grid by multi-level division, simultaneously using inverter system obtains the power generation data of each unit area, then cleaning robot is gradually shielded after cleaning unit area solar panel each grid, while calculating efficiency change rate, by threshold value judging to efficiency change rate to assess the power generation efficiency of the grid being shielded, and again by cleaning robot to grid is inspected, generates inspection report, sends back central control unit, and guides people to solar panel maintenance.Using the present application, solar panel can be automatically cleaned and inspected, the power generation efficiency change of solar panel is accurately mastered, and people are guided to repair and replace solar panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of solar power generation, in particular to a self-shielding solar panel inspection and cleaning method. BACKGROUND

[0002] With the development of science and technology, solar photovoltaic power generation is widely used, and in order to improve the light efficiency, the solar photovoltaic power generation system is mostly selected to be set on the mountain or in the desert area with sufficient light source, which not only has large coverage area, but also has harsh environment.

[0003] The above situation makes it necessary to regularly clean and maintain the solar panel during use to avoid the decline of power generation efficiency caused by foreign matter shielding or panel surface damage, solar panel, etc. In order to meet the needs of large-area inspection and cleaning, manufacturers on the market have launched various cleaning and inspection devices, such as the solar panel surface maintenance and inspection method and system disclosed in the prior art CN115145305A, which mainly realizes the maintenance and inspection of the solar panel through a drone. However, the inspection method is usually a visual capture scheme through a drone, which can detect problems such as foreign matter shielding or panel surface damage, but cannot check the decline of power generation efficiency caused by internal material aging or line damage of the solar panel.

[0004] In order to solve the above problems, the present application designs a self-shielding solar panel inspection and cleaning method and system. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a self-shielding solar panel inspection and cleaning method, which comprises the following steps:

[0006] Step S1: data collection and evaluation, dividing the solar panel into a plurality of unit areas with the same area, dividing each area into a plurality of grids, and obtaining an estimated value of the power generation of the unit area;

[0007] Step S2: the cleaning robot moves to the unit area for cleaning, and after the cleaning is completed, the shielding plate is unfolded to shield each grid of the unit area gradually;

[0008] Step S3: obtaining the power generation of the unit area after shielding, and combining the estimated value of the power generation of the unit area in step S1 to calculate the efficiency change rate;

[0009] Step S4: when the efficiency change rate in step S3 is greater than a preset threshold, the cleaning robot moves to other unit areas, and steps S2 and S3 are repeated until the solar panel cleaning and inspection are completed;

[0010] When the ratio of the power generation of the unit area after the shielding to the estimated value of the power generation of the unit area in step S1 is less than a preset threshold value, the unit area is marked, and the cleaning robot enters the obstacle removal program. After the obstacle removal program is completed, the cleaning robot moves to other areas, and steps S2 and S3 are repeated until the solar panel cleaning and inspection are completed.

[0011] The step S1 comprises:

[0012] Step S11: Collect the power generation data of each unit area, and divide the power generation period according to the light intensity.

[0013] Step S12: Record the power generation of each unit area in the power generation period, combine the power generations of the power generation periods with the same light intensity, calculate the average value, and take the average value as the estimated value of the unit area power generation of the unit area under the light intensity.

[0014] In the step S2, the cleaning robot should be the same as the grid area that needs to be shielded after the shielding plate is unfolded.

[0015] The performance change rate calculation formula of step S3 is as follows:

[0016]

[0017] Wherein, E is the performance change rate, P 测 is the power generation of the unit area obtained in step S3, P 估 is the estimated value of the power generation of the unit area obtained in step S1, S 区 is the area of the unit area, S 网 is the area of the grid.

[0018] The obstacle removal program in step S4 comprises the following steps:

[0019] Step S41: Visual capture and infrared imaging detection are performed to check whether there is a visual fault of the solar panel in the grid.

[0020] Step S42: After the inspection is completed, all visual faults found in the grid are recorded and uploaded.

[0021] The obstacle removal program in step S4 comprises the following steps:

[0022] Step S41: Visual capture and infrared imaging detection are performed to check whether there is a visual fault of the solar panel in the grid.

[0023] Step S42: After the inspection is completed, all visual faults found in the grid are recorded and uploaded.

[0024] In order to solve the above-mentioned self-shielding type solar panel inspection and cleaning method, the embodiment of the present application also provides a self-shielding type solar panel inspection and cleaning method, comprising: an inverter system, a central control unit and a cleaning robot.

[0025] The inverter system is connected with each unit area of the solar panel and can obtain the power generation of each unit area;

[0026] The central control unit comprises a processor and a memory, the processor is used for controlling the connection of the cleaning robot, and the memory is used for accepting the power generation data obtained by the inverter system and the inspection data of the cleaning robot, and then calculating and generating the inspection result through the processor;

[0027] The cleaning robot comprises a main body, a driving module, an information sensing module, a shielding module, a signal transmission module and a cleaning module,

[0028] The driving module is arranged below the main body and drives the main body to move on the solar panel, the central control unit controls the connection of the cleaning robot through the signal transmission module, so that the cleaning robot can clean the solar panel through the cleaning module, and gradually shield the solar panel through the shielding module and perform inspection in the process, and obtain the inspection data through the information sensing module.

[0029] The cleaning module is a roller brush installed on both sides of the main body, the roller brush can be driven by a cleaning motor and clean the solar panel during operation.

[0030] The shielding module comprises a shielding plate connected to both sides of the main body, a rotating shaft and a shielding driving device, the shielding plate is rotatably installed on both sides of the main body and can be driven by the shielding driving device to rotate the rotating shaft to overturn the shielding plate.

[0031] The information sensing module comprises: an inspection component comprising a visual capture device and an infrared imaging device; an environment monitoring component comprising an illumination intensity sensor and a temperature sensor; a cleaning robot posture monitoring component comprising a Hall sensor and a laser edge detection sensor.

[0032] The driving module comprises a driving motor, a driving chain, a rotating wheel and a walking track, the driving motor is drivingly connected with the rotating wheel through the driving chain, and the walking track is sleeved outside the rotating wheel and can be driven by the rotating wheel.

[0033] The embodiment of the present application has the following beneficial effects: ① The present scheme adopts the scheme of cleaning first and then shielding and inspecting to realize the maintenance and repair of the solar panel. Compared with the traditional visual detection by the unmanned aerial vehicle, the power generation efficiency change rate is used to monitor the condition of the solar panel in reverse, so that the accuracy of the inspection is better, and the problem that some solar panels cannot be found due to the invisible aging or internal line loss problem which leads to the decrease of the power generation efficiency is avoided. ② The present scheme realizes the power generation monitoring, cleaning and inspection of the solar panel through the inverter system, the central controller and the cleaning robot, reduces the use of manpower, and improves the efficiency and safety of the inspection. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a step block diagram of the solar panel inspection and cleaning method of the present application;

[0035] Figure 2 is a division schematic diagram of the unit area and the grid of the solar panel of the present application;

[0036] Figure 3 is a schematic block diagram of the solar panel inspection and cleaning system of the present application;

[0037] Figure 4 is a schematic diagram of the cleaning robot of the present application;

[0038] Figure 5 is a schematic diagram of the shielding module of the cleaning robot of the present application;

[0039] Figure 6 is a schematic diagram of the internal split structure of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0041] Embodiment 1

[0042] As shown in Figure 1 , Figure 2 , a self-shielding solar panel inspection and cleaning method comprises the following steps:

[0043] Step S1: The solar panel is divided into a plurality of unit areas with the same area, each area is divided into a plurality of grids, and an estimated value of the power generation of the unit area is obtained.

[0044] Step S2: The cleaning robot moves to the unit area for cleaning, and after the cleaning is completed, the shielding plate is unfolded to shield each grid of the unit area gradually.

[0045] Step S3: Obtain the power generation of the unit area after being blocked, and calculate the change rate of efficiency by combining the estimated value of the power generation of the unit area in step S1.

[0046] Step S4: When the change rate of efficiency in step S3 is greater than a preset threshold, the cleaning robot moves to other grids, and steps S2 and S3 are repeated until the cleaning and inspection of the solar panels are completed.

[0047] When the ratio of the power generation of the unit area after being blocked to the estimated value of the power generation of the unit area in step S1 is less than a preset threshold, the grid is marked, and the cleaning robot enters the obstacle removal program. After the obstacle removal program is completed, the cleaning robot moves to other grids, and steps S2 and S3 are repeated until the cleaning and inspection of the solar panels are completed.

[0048] As shown in FIG. 1, the step S1 includes: Figure 2

[0049] Step S11: Collect the power generation data of each unit area, and divide the power generation period according to the light intensity.

[0050] Step S12: Record the power generation of each unit area in the power generation period, combine the power generations of the power generation periods with the same light intensity, calculate the average value, and take the average value as the estimated value of the power generation of the unit area under the light intensity.

[0051] Generally, in step S11, at least one month of power generation data of the unit area is collected, and the power generations of the power generation periods with the light intensity and the sunlight angle in the close range are classified and counted according to the time period of each day, and the average value of multiple groups of data is taken as the estimated value of the power generation of the unit area corresponding to the light intensity and the sunlight angle.

[0052] It should be noted that the solar power generation system is generally composed of multiple solar panels with the same length, width and height, and the unit area of the present scheme generally refers to a fixed number of solar panels, such as eight or ten solar panels, and the grid refers to a single solar panel. Therefore, when blocked, one solar panel in the unit area is completely blocked, and then the condition of the solar panel is monitored by the change rate of efficiency.

[0053] Specifically, the change rate of efficiency of step S3 is calculated according to the following formula:

[0054]

[0055] Wherein, E is the change rate of efficiency, P 测 is the power generation of the unit area obtained in step S3, P 估 is the estimated value of the power generation of the unit area obtained in step S1, and S​区 S represents the area of ​​a unit region. 网 The area is the grid.

[0056] by Figure 2 For example, assuming eight solar panels form a unit area, then one solar panel represents one grid. The inverter system retrieves the power generation of the power generation cycle closest to the current solar intensity, and uses the average of this power generation as an estimate. Then, the numerator P... 估 Subtract P 测 This can be considered as the actual power generation of the shaded solar panel, while the denominator P 估 Multiplying the grid area by the ratio of the unit area gives the estimated power generation of the shaded solar panel. The ratio of the actual power generation to the estimated power generation is the efficiency change rate. When this efficiency change rate is lower than the threshold (assuming the threshold is 90%), the grid is marked, and the troubleshooting procedure in step S4 is performed.

[0057] Specifically, the troubleshooting procedure in step S4 includes the following steps:

[0058] Step S41: Perform visual capture and infrared imaging detection to check whether there are any visible faults in the solar panels within the grid;

[0059] Step S42: After the inspection is completed, record all visible faults found in the grid and upload them.

[0060] Example 2

[0061] This embodiment mainly discloses a self-shading solar panel inspection and cleaning system for implementing Embodiment 1, such as... Figure 3 The system shown includes: inverter system 1, central control unit 2, and cleaning robot 3;

[0062] The inverter system 1 is connected to each unit area of ​​the solar panel and can obtain the power generation of each unit area;

[0063] The central control unit 2 includes a processor and a memory. The processor is used to control the cleaning robot 3 connected to the inverter system 1 and the inspection data of the cleaning robot 3 to generate inspection results.

[0064] The inspection results include the following information:

[0065] The inspection conditions include: the location of the solar panel grid to be inspected, the inspection time, the ambient light intensity and the surface temperature of the solar panels during the inspection.

[0066] The visualized abnormal log includes: the number of surface damages of the solar panel that can be captured by the visual capture and the corresponding damage situation, and also includes the thermal imaging diagram captured by the infrared imaging device.

[0067] As shown in Figure 4 , Figure 5 , Figure 6 The cleaning robot 3 includes: a main body 31, a driving module 32, an information sensing module 33, a shielding module 34, a signal transmission module 35, and a cleaning module 36.

[0068] The driving module 32 is arranged below the main body 31 and drives the main body 31 to move on the solar panel. The central control unit 2 controls the cleaning robot 3 through the signal transmission module 35, and makes it clean the solar panel through the cleaning module 36, and step by step shields the solar panel through the shielding module 34 and inspects it through the information sensing module 33 in the process.

[0069] As shown in Figure 5 The shielding module 34 includes shielding plates 341 connected to both sides of the main body, a rotating shaft 342, and a shielding driving device. The shielding plates 341 are rotatably installed on both sides of the main body 31 and can be driven by the shielding driving device to make the rotating shaft 342 turn over the shielding plates 341, so that the shielding plates 341 can completely cover the grid until covering a power generation cycle.

[0070] Of course, the structure of the above-mentioned shielding module 34 is not the only one. It can also be a structure for shielding realized by means such as an umbrella structure or a roller shutter structure. Such conventional structures should be considered as easily thought of by those skilled in the art. The focus of the present application is not the shielding module, but the use of data collected by the cleaning robot and the inverter system and the form of self-shielding to form an inspection scheme. Therefore, any scheme for realizing the shielding scheme for conventional replacement should fall within the protection scope of the present application.

[0071] As shown in Figure 5 Each component of the information sensing module 33 is connected to the central control unit 2 through the signal transmission system 35. The signal sensing module 33 includes:

[0072] The inspection component includes a visual capture device 331 and an infrared imaging device. The inspection component is used to implement the troubleshooting procedure in step S4 and can upload the scanned faults to the central control unit through the signal transmission module, and then generate the final inspection structure. Please refer to Figure 5 The visual capture device 331 is a camera installed at the lower part of the main body 31 and is used for visual capture of the solar panel.

[0073] It should be noted that visually capturing surface damage to solar panels using cameras and sensing abnormal heating of solar panels using infrared thermal imaging are both routine inspection methods in this field, and will not be repeated here.

[0074] Environmental monitoring components include a light intensity sensor and a temperature sensor 332. The light intensity sensor and temperature sensor are used to monitor the light intensity and temperature during inspection, which can then be correlated with the power generation data recorded in the inverter system. This allows the inverter system 1 to retrieve the power generation cycle with the light intensity closest to that during its inspection and use the average power generation of this part of the power generation cycle as an estimate.

[0075] The cleaning robot posture monitoring component includes a Hall sensor and a laser edge detection sensor 333. The Hall sensor is used to sense changes in the magnetic field of the drive motor, thereby achieving precise control of the drive motor. The laser edge detection sensor 333 is installed at the edge of the main body to sense the edge of the solar panel and control the robot's walking path.

[0076] Please refer to Figure 6 The cleaning module 36 is a roller brush installed on both sides of the main body. The roller brush can be driven by a cleaning motor and cleans the solar panel during operation.

[0077] The drive module 32 includes a drive motor 321, a drive chain 322, a wheel 323, and a track. The drive motor 321 is connected to the wheel 323 via the drive chain 322. The track is fitted around the wheel 323 and can be driven by the wheel 323.

[0078] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A self-shading solar panel inspection and cleaning method, characterized in that, The method comprises the following steps: Step S1: dividing the solar panel into a plurality of unit areas with the same area, dividing each unit area into a plurality of grids, and obtaining an estimated value of the power generation of the unit area, wherein the step S1 comprises: Step S11: collecting the power generation data of each unit area and dividing the power generation period according to the light intensity; Step S12: recording the power generation of each unit area in the power generation period, combining the power generation of the power generation period with the same light intensity, calculating the average value, and taking the average value as the estimated value of the power generation of the unit area under the light intensity in the unit area; Step S2: the cleaning robot moves to the unit area for cleaning, and after the cleaning is completed, the shielding plate is unfolded to shield each grid of the unit area gradually; Step S3: obtaining the power generation of the unit area after shielding, and calculating the efficiency change rate by combining the estimated value of the power generation of the unit area in step S1, wherein the efficiency change rate calculation formula of step S3 is as follows: where E is the rate of change of efficiency, P 测 is the power generation per unit area obtained in step S3, P 估 is the estimated value of the power generation per unit area obtained in step S1, S 区 is the area of the unit area, S 网 is the area of the grid; Step S4: when the efficiency change rate in step S3 is greater than a preset threshold, the cleaning robot moves to other grids, and steps S2 and S3 are repeated until the cleaning and inspection of the solar panel are completed; When the ratio of the power generation of the unit area after shielding to the estimated value of the power generation of the unit area in step S1 is less than a preset threshold, the grid is marked, and the cleaning robot enters the troubleshooting program, and after the troubleshooting program is completed, the cleaning robot moves to other grids, and steps S2 and S3 are repeated until the cleaning and inspection of the solar panel are completed.

2. The self-shading solar panel inspection and cleaning method of claim 1, wherein, The shielding area in step S2 is the same as the grid area.

3. The self-shading solar panel inspection and cleaning method of claim 1, wherein, The troubleshooting program in step S4 comprises the following steps: Step S41: visual capture and infrared imaging detection are performed to check whether there is a visible fault in the solar panel in the grid; Step S42: after the checking is completed, all visible faults found in the grid are recorded and uploaded.

4. A system for the self-shading solar panel inspection and cleaning method according to any one of claims 1-3, characterized in that, It comprises: An inverter system (1), a central control unit (2), and a cleaning robot (3); The inverter system (1) is connected with each unit area of the solar panel and can obtain the power generation of each unit area; The central control unit (2) comprises a processor and a memory, wherein the processor is used to control the connection of the cleaning robot (3), and the memory is used to accept the power generation data obtained by the inverter system (1) and the inspection data of the cleaning robot (3), and generate an inspection result; The cleaning robot (3) comprises a main body (31), a driving module (32), an information sensing module (33), a shielding module (34), a signal transmission module (35), and a cleaning module (36), The driving module (32) is arranged below the main body (31) and drives the main body (31) to move on the solar panel, the central control unit (2) controls the connection of the cleaning robot (3) through the signal transmission module (35), and makes the cleaning robot (3) clean the solar panel through the cleaning module (36), and shield the solar panel gradually through the shielding module (34) and inspect in the process through the information sensing module (33).

5. A self-shading solar panel inspection and cleaning method system according to claim 4, wherein, The information sensing module (33) comprises: The inspection component includes a visual capture device (331) for visual capture of the solar panel and an infrared imaging device for infrared thermal imaging scanning of the sun. The environmental monitoring component includes an illumination intensity sensor and a temperature sensor (332) for obtaining the external illumination intensity and the surface temperature of the solar panel during the inspection. The cleaning robot posture monitoring component includes a Hall sensor for sensing the magnetic field change of the driving motor to achieve accurate control of the driving motor and a laser edge detection sensor (333) for feeding back the position of the cleaning robot.

6. A self-shading solar panel inspection and cleaning method system according to claim 5, wherein, The shielding module (34) includes shielding plates (341) connected to both sides of the main body, a rotating shaft (342), and a shielding driving device. The shielding plates (341) are rotatably installed on both sides of the main body (31) and can be driven by the shielding driving device to make the rotating shaft (342) flip the shielding plates (341).

7. A self-shading solar panel inspection and cleaning method system according to claim 6, wherein, The cleaning module (36) is a roller brush installed on both sides of the main body. The roller brush can be driven by a cleaning motor and clean the solar panel during operation.

8. The self-shading solar panel inspection and cleaning method system of claim 6, wherein, The driving module (32) includes a driving motor (321), a driving chain (322), a rotating wheel (323), and a walking track. The driving motor (321) is drivingly connected to the rotating wheel (323) through the driving chain (322). The walking track is sleeved outside the rotating wheel (323) and can be driven by the rotating wheel (323).

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