A photovoltaic panel support fault inspection system and method

Abstract

The application discloses a kind of photovoltaic panel support fault inspection system and inspection method, belong to photovoltaic power plant operation and maintenance technical field, including displacement sensor, displacement collector, centralized collector, movable collector carrier and control base station;The displacement sensor is arranged on photovoltaic panel support, and the displacement collector is connected with displacement sensor;The centralized collector is arranged on movable collector carrier, and centralized collector is wirelessly connected with displacement collector, and centralized collector is wirelessly connected with control base station.Displacement sensor data is collected and stored in displacement collector, and centralized collector wirelessly receives the data of each displacement collector in turn, and is transmitted to control base station, and control base station judges the change of the inclination angle of photovoltaic panel support exceeds threshold value and automatically alarms.Make photovoltaic power station fast automatic data acquisition, improve the efficiency, accuracy of patrol and reduce personnel cost.Realize the early forecast of photovoltaic panel support frame hidden danger fault.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of photovoltaic power station operation and maintenance, and particularly relates to a photovoltaic panel support fault inspection system and method. BACKGROUND

[0002] China has proposed that carbon dioxide emissions will peak before 2030 and achieve carbon neutrality before 2060. To achieve this goal, new energy will be the main supply energy in China in the future. At present, the non-fossil energy installed capacity accounts for 45.5% of the total installed capacity in China, and photovoltaic power generation accounts for 11.9% of the total installed capacity. In the future, the photovoltaic installed capacity will continue to grow rapidly, and it is expected to reach 40% of the total installed capacity. Photovoltaic power stations will become more and more numerous, and the larger the power generation capacity of a single photovoltaic power station, the more area and photovoltaic panels are required, which brings the main problem of photovoltaic power stations, i.e., the dramatic increase in the workload of inspection and maintenance.

[0003] Photovoltaic power stations are generally constructed on flat land, hills, slopes, ponds and various terrains. The support of the photovoltaic panel plays a supporting role, and the support has a stand-alone type and a connected type. Under the action of natural environment and external conditions, factors such as lightning strike, landslide, severe weather, aging, oxidation and potential human theft and damage will bring certain safety hazards to the support, and the foundation of the support is prone to sliding, tilting and cracking, thereby causing deformation, tilting and even collapse of the support. Therefore, it is necessary to regularly maintain and detect faults of the photovoltaic panel support.

[0004] There are two common configurations of traditional photovoltaic panels: 60 pieces and 72 pieces. The corresponding sizes are: the area of a 60-piece photovoltaic assembly is about 1.635 m2; and the area of a 72-piece photovoltaic assembly is about 1.938 m2. According to the calculation of a 72-piece 500W photovoltaic panel, about 4 m2 is required for 1KW. Taking a 50MW photovoltaic power station as an example, about 2x10 5 m2 is required, and the area of the photovoltaic inspection channel is calculated by increasing by 50%, and the total area is about 3x10 5 m2. According to the calculation of a rectangular occupied area, it is about 300m x 1000m, and the manual inspection workload is huge. At the same time, if 4 photovoltaic panels are combined into one photovoltaic panel support, and each photovoltaic panel is 500W, 2.5x10 4 photovoltaic panel supports are required, and if 20 photovoltaic panels are combined into one connected photovoltaic panel support, 5000 connected photovoltaic panel supports are required. It can be seen that the inspection and maintenance of photovoltaic panel supports is also huge. The traditional photovoltaic power station is mainly detected by manual inspection and maintenance, and it is difficult for the inspection personnel to quickly detect the tilting hidden trouble of the support, and the efficiency is low.

[0005] Therefore, there is an urgent need in the prior art for a new technical solution to solve this problem. SUMMARY

[0006] In order to overcome the deficiencies of the prior art, the present application provides a photovoltaic panel support fault inspection system and method, which is used to solve the technical problem of low detection efficiency of artificial inspection.

[0007] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a photovoltaic panel support fault inspection system, comprising a displacement sensor, a displacement collector, a centralized collector, a movable collector carrier and a control base station; the displacement sensor is arranged on the photovoltaic panel support, and the displacement collector is in communication connection with the displacement sensor; the centralized collector is arranged on the movable collector carrier, and the centralized collector is in wireless communication connection with the displacement collector and the control base station.

[0008] The displacement collector comprises an RS-485 four-channel communication board, a first WiFi receiving board and a first WiFi dual antenna; the displacement collector is built-in with an operating system.

[0009] The centralized collector comprises a PC-104 mainboard, a DC-DC power board, a second WiFi receiving board, a CPU, a RAM memory card, a solid state disk and a second WiFi dual antenna; the solid state disk is built-in with an operating system, and the solid state disk comprises a first judgment module; the first judgment module is used to judge the WiFi signal of the displacement collector, and the first judgment module is used to judge the repeatability of the data collected by the displacement collector.

[0010] The control base station comprises a control module, a wireless communication module, a storage module and a second judgment module; the control module is used to control the moving route of the movable collector carrier; the storage module is used to automatically store and statistically receive the data; and the second judgment module is used to judge the change amount of the inclination angle of the photovoltaic panel support, and the change amount of the inclination angle exceeding the threshold value is automatically alarmed.

[0011] A photovoltaic panel support fault inspection method, which adopts the photovoltaic panel support fault inspection system described above, comprises the following steps,

[0012] Step one, setting the number of all photovoltaic panel supports of the photovoltaic power station, and marking the geographical position of the photovoltaic panel support;

[0013] Step two, collecting the data of the displacement sensor and storing it in the displacement collector;

[0014] Step three, setting the inspection route of the movable collector carrier according to the position distribution of the displacement collector, and controlling the movable collector carrier to inspect according to the set route;

[0015] Step four, the centralized collector wirelessly receives the data of each displacement collector in turn, and completes one inspection cycle;

[0016] Step five, transmitting the data on the centralized collector to the control base station;

[0017] Step six, the control base station stores the data, judges the change of the tilt angle of the photovoltaic panel support, and automatically alarms when the change of the tilt angle exceeds a threshold.

[0018] The process that the centralized collector sequentially receives the data of each displacement collector is that the centralized collector searches for a WiFi signal, judges that it is a wireless signal emitted by the displacement collector, further judges the repetitiveness of the data of the displacement collector, does not collect the data again for the collected data, reads the latest data of the displacement collector for the uncollected data, saves the read data into the centralized collector according to a set format and parameter, and continues to search for the WiFi signal of a new displacement collector.

[0019] The design scheme can bring the following beneficial effects.

[0020] 1. The displacement sensor is used to measure the tilt angle of the photovoltaic panel support in real time, so as to judge whether the photovoltaic panel support has a tilt hidden danger, and realize the early prediction of the hidden danger of the photovoltaic panel support.

[0021] 2. The wireless transmission mode is used to make it possible for the photovoltaic power station to automatically collect data quickly, improve the efficiency, accuracy and personnel cost of the photovoltaic power station maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a photovoltaic panel support schematic diagram of the photovoltaic panel support fault inspection system.

[0023] Figure 2 It is a displacement collector structure block diagram of the photovoltaic panel support fault inspection system.

[0024] Figure 3 It is a displacement collector software flowchart of the photovoltaic panel support fault inspection system.

[0025] Figure 4 It is a centralized collector structure block diagram of the photovoltaic panel support fault inspection system.

[0026] Figure 5 It is a centralized collector software flowchart of the photovoltaic panel support fault inspection system.

[0027] Figure 6 It is a structure block diagram of the photovoltaic panel support fault inspection system.

[0028] Figure 7It is a rotor unmanned aerial vehicle suspension machine-mounted centralized collector structure schematic diagram of the photovoltaic panel support fault patrol inspection system.

[0029] In the figure, 1 is a displacement sensor, 2 is a displacement collector, 201 is a RS-485 four-channel communication board, 202 is a first WiFi receiving board, 203 is a first WiFi double antenna, 3 is a centralized collector, 301 is a PC-104 mainboard, 302 is a DC-DC power supply board, 303 is a second WiFi receiving board, 304 is a CPU, 305 is a RAM memory card, 306 is a solid state disk, 307 is a second WiFi double antenna, 308 is a first judgment module, 4 is a movable collector carrier, 5 is a control base station, 501 is a control module, 502 is a wireless communication module, 503 is a storage module, 504 is a second judgment module, 6 is a photovoltaic panel support, and 7 is a RS-485 communication cable. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] It should be noted that, in this paper, relationship terms such as first and second 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 the entities or operations.

[0032] In order to more clearly illustrate the present application, the present application will be further described below in conjunction with the preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than limiting, and users can make various changes to the following parameters without departing from the inventive concept and scope set forth in the claims. In order to avoid obscuring the essence of the present application, well-known methods and processes are not described in detail.

[0033] By the accompanying Figures 1-7 It is shown that a photovoltaic panel support fault patrol inspection system, comprising a displacement sensor 1, a displacement collector 2, a centralized collector 3, a movable collector carrier 4 and a control base station 5; the displacement sensor 1 is arranged on the photovoltaic panel support 6, and the displacement collector 2 is in communication connection with the displacement sensor 1; the centralized collector 3 is arranged on the movable collector carrier 4, the centralized collector 3 is in wireless communication connection with the displacement collector 2, and the centralized collector 3 is in wireless communication connection with the control base station 5.

[0034] The displacement collector 2 comprises a RS-485 four-channel communication board 201, a first WiFi receiving board 202 and a first WiFi double antenna 203; the displacement collector 2 is built-in with an operating system.

[0035] The centralized collector 3 comprises a PC-104 mainboard 301, a DC-DC power board 302, a second WiFi receiving board 303, a CPU 304, a RAM memory card 305, a solid state disk 306 and a second WiFi double antenna 307; the solid state disk 306 is built-in with an operating system, and the solid state disk 306 comprises a first judging module 308; the first judging module 308 is used for judging the WiFi signal of the displacement collector 2, and the first judging module 308 is used for judging the repetitiveness of the data collected by the displacement collector 2.

[0036] The control base station 5 comprises a control module 501, a wireless communication module 502, a storage module 503 and a second judging module 504; the control module 501 is used for controlling the moving route of the movable collector carrier 4; the storage module 503 is used for automatically storing and counting the received data; and the second judging module 504 is used for judging the change amount of the inclination angle of the photovoltaic panel support 6, and automatically alarming when the change amount of the inclination angle exceeds a threshold value.

[0037] Firstly, the independent supports of all photovoltaic panels of the photovoltaic power station are set according to the numbering required by the photovoltaic power station, and the accurate geographic position is input, and then the inspection route is set according to the one-time inspection cycle of the movable collector carrier 4, if the number of photovoltaic panels is too large or the distance is far, different inspection routes should be set; each detection needs the control base station 5 to control the movable collector carrier 4 to automatically inspect according to the set route, and the centralized collector 3 wirelessly receives the data of each displacement collector 2 in sequence during the inspection process of the movable collector carrier 4, the first judging module 308 first judges whether the wireless communication signal is from the displacement collector 2, and then judges whether the data of the displacement collector 2 at the current position has been collected; if the data has been collected, the next displacement collector 2 is searched, and if the data has not been collected, the data of the displacement collector 2 at the current position is collected. After one inspection cycle is completed, the data saved on the centralized collector 3 is transmitted to the control base station 5; finally, the control base station 5 can count, query, process and update the data this time, and the second judging module 504 judges whether the change amount of the inclination angle of the photovoltaic panel support 6 exceeds a threshold value, and automatically alarms if the threshold value is exceeded.

[0038] In this way, the whole system measures the inclination angle of the photovoltaic panel support in real time to judge whether the photovoltaic panel support has an inclination hidden danger, and realizes the early prediction of the hidden danger of the photovoltaic panel support. And through the wireless transmission mode, it makes it possible for the photovoltaic power station to automatically collect data quickly, improves the efficiency, accuracy of photovoltaic power station inspection and maintenance, and reduces personnel costs.

[0039] The specific implementation adopts a rotor unmanned aerial vehicle as the movable collector carrier 4, of course, a robot or the like can also be selected according to the topographic features of the photovoltaic power station.

[0040] Further, the built-in operating system of the displacement collector 2 and the centralized collector 3 is Linux operating system.

[0041] Further, the displacement collector 2 and the displacement sensor 1 are connected through the RS-485 communication cable 7.

[0042] Further, the data communication between the displacement collector 2 and the centralized collector 3 adopts FTP protocol transmission.

[0043] Further, the displacement collector 2 is connected with four displacement sensors 1.

[0044] Further, the displacement sensor 1 and the displacement collector 2 are powered by the photovoltaic panel output power supply.

[0045] In actual operation, the displacement sensor 1 is directly installed and fixed on the photovoltaic panel support 6, which is used to accurately measure the inclination angle of the photovoltaic panel support 6, and the working temperature is between-40℃ and 85℃. The displacement sensor adopts a high-resolution differential digital-to-analog converter to convert the change of the static gravitational field into the change of the inclination angle. The displacement sensor 1 is used to convert the static inclination angle of the photovoltaic panel support 6 ±90 degrees X, Y axis into RS-485 digital signal, which is input to the displacement collector 2 through the RS-485 communication cable 7. At most, four displacement sensors 1 can be connected to the displacement collector 2 through four RS-485 communication cables 7.

[0046] The RS-485 communication cable 7 adopts RS-485 serial bus standard. The displacement collector 2 provides 12V power supply for the displacement sensor 1 through the RS-485 communication cable 7. The RS-485 communication cable 7 is used to meet the communication and power supply between the displacement sensor 1 and the displacement collector 2.

[0047] The displacement collector 2 is directly installed and fixed on the photovoltaic panel support 6. The power supply of the displacement collector 2 is directly taken from the ±12V or ±24V DC output of the photovoltaic panel above the installation support. The displacement collector 2 transmits and responds data with the on-board centralized collector 3 on the rotor unmanned aerial vehicle through the first WiFi double antenna 203. The rotor unmanned aerial vehicle provides power supply ±12V or ±24V for the on-board centralized collector 3 through the on-board battery. The rotor unmanned aerial vehicle can carry a load capacity of 1kg and a flight time of at least 60min. The control base station 5 controls the rotor unmanned aerial vehicle to fly according to the set position, wirelessly collects the data of multiple displacement collectors 2 and responds. The on-board centralized collector 3 automatically saves the received data of multiple displacement collectors 2 to the solid state disk 306.

[0048] The displacement collector 2 comprises a shell, a PC-104 mainboard, a RS-485 four-channel communication board 201, a DC-DC power supply board, a first WiFi receiving board 202, a fanless low-power CPU, a RAM memory card, a solid state disk, a first WiFi double antenna 203, a DC input power terminal, four groups of 12V DC power output terminals, four groups of RS-485 input and output terminals, and four groups of IP67 waterproof aviation sockets. The various components are installed in the shell; the PC-104 mainboard is installed with the fanless low-power CPU, the RAM memory card, and the solid state disk; the RS-485 four-channel communication board 201, the DC-DC power supply board, and the first WiFi receiving board 202 are installed on the PC-104 mainboard stack bus socket; the first WiFi double antenna 203 is installed on the shell and connected to the first WiFi receiving board 202 through a cable; the DC-DC power supply board is connected to the four groups of 12V DC power output terminals through a cable; the RS-485 four-channel communication board 201 is connected to the four groups of RS-485 input and output terminals through a cable; and the four groups of IP67 waterproof aviation sockets are connected to the four groups of RS-485 input and output terminals and the four groups of 12V DC power output terminals. The solid state disk on the PC-104 mainboard stores an embedded Linux operating system and a collection program of the displacement collector 2, which are used for starting and running the displacement collector 2. The embedded operating system provides FTP service, and the first WiFi receiving board 202 provides wireless receiving and sending data.

[0049] The collection program of the displacement collector 2 automatically starts the embedded Linux operating system after power-on. The operating system is trimmed to only provide necessary FTP application service and network service. The FTP application service automatically runs. The RS-485 signal program reads timing parameters and starts a timing software process. When the timing parameter reading time is reached, the RS-485 signal data of up to four channels are sequentially read, and the read data is saved in the FTP server directory according to the specified format and parameters. The timing parameters, file saving format and parameters, time, and photovoltaic panel support number are set in advance during installation.

[0050] The on-board centralized collector 3 comprises a shell, a PC-104 mainboard 301, a DC-DC power board 302, a second WiFi receiving board 303, a fanless low-power CPU 304, a RAM memory card 305, a solid state disk 306, a second WiFi double antenna 307, and a DC input power terminal.

[0051] The collection program of the on-board centralized collector 3 firstly automatically starts the embedded Linux operating system after being powered on, the operating system is trimmed to only provide necessary network functions; searches for a WiFi signal and establishes network communication; judges whether the wireless signal is sent by the displacement collector 2, if yes, judges whether the data of the displacement collector 2 has been collected; if the data of the displacement collector 2 has been collected, no further collection is performed; if the data of the displacement collector 2 has not been collected, the latest data of the FTP of the displacement collector 2 is read; the read data is saved to the solid state disk according to a specified format and parameters; and new WiFi signals are continuously searched.

[0052] A photovoltaic panel support fault inspection method adopts the photovoltaic panel support fault inspection system, and comprises the following steps,

[0053] Step one, set the number of all photovoltaic panel supports of the photovoltaic power station, and mark the geographical position of the photovoltaic panel supports.

[0054] Step two, collect the data of the displacement sensor 1 and store the data in the displacement collector 2; the collection is timed collection, and the time interval of the timing can be less than the inspection period, so that the data is updated at least once before the next inspection.

[0055] Step three, set the inspection route of the movable collector carrier 4 according to the position distribution of the displacement collector 2, and control the movable collector carrier 4 to inspect according to the set route.

[0056] Step four, the centralized collector 3 wirelessly receives the data of each displacement collector 2 in sequence, and completes one inspection period.

[0057] Step five, transmit the data on the centralized collector 3 to the control base station 5.

[0058] Step six, the base station 5 stores the data, determine the change of the inclination angle of the photovoltaic panel bracket 6, the change of the inclination angle exceeds the threshold value, then automatically alarm. The threshold value is set according to the volume weight of the photovoltaic panel and the specific environment combined with the principle of mechanics, the environment includes topography, wind and other factors.

[0059] The process of the centralized collector 3 receiving the data of each displacement collector 2 in turn is that the centralized collector 3 searches the WiFi signal, judges whether it is the wireless signal emitted by the displacement collector 2, then further judges the repeatability of the data of the displacement collector 2, does not collect the data again for the collected data, reads the latest data of the displacement collector 2 for the data not collected, saves the read data into the centralized collector 3 according to the set format and parameters, and continues to search the WiFi signal of the new displacement collector 2.

[0060] Obviously, the above described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

Claims

1. A photovoltaic panel support fault patrol method, the photovoltaic panel support fault patrol system used comprises a displacement sensor (1), a displacement collector (2), a centralized collector (3), a movable collector carrier (4) and a control base station (5); the displacement sensor (1) is arranged on the photovoltaic panel support (6); the displacement collector (2) is in communication connection with the displacement sensor (1); the centralized collector (3) is arranged on the movable collector carrier (4), the centralized collector (3) is in wireless communication connection with the displacement collector (2), and the centralized collector (3) is in wireless communication connection with the control base station (5); characterized in that: It comprises the following steps, Step one, set the number of all photovoltaic panel supports of photovoltaic power station, mark the geographical position of photovoltaic panel support; displacement sensor (1) is directly installed and fixed on photovoltaic panel support (6), used for accurately measuring the inclination angle of photovoltaic panel support (6), displacement sensor (1) converts the change of static gravity field into inclination change by using high-resolution differential digital-analog converter, displacement sensor (1) is used for converting the static inclination angle of photovoltaic panel support (6) into RS-485 digital signal, and inputting into displacement collector (2) through RS-485 communication cable; Step two, collect the data of displacement sensor (1) and store in displacement collector (2); Step three, set the inspection route of movable collector carrier (4) according to the position distribution of displacement collector (2), and control movable collector carrier (4) to inspect according to the set route; Step four, centralized collector (3) sequentially receives the data of each displacement collector (2) wirelessly, and completes a inspection cycle; The process that the centralized collector (3) sequentially receives the data of each displacement collector (2) wirelessly is that the centralized collector (3) searches the WiFi signal, judges whether the wireless signal is emitted by the displacement collector (2), further judges the repeatability of the data of the position displacement collector (2), does not collect the data again for the collected data, reads the latest data of the position displacement collector (2) for the data not collected, saves the read data into the centralized collector (3) according to the set format and parameter, and continues to search the WiFi signal of the new displacement collector (2); Step five, transmit the data on the centralized collector (3) to the control base station (5); Step six, the control base station (5) stores the data this time, judges the change amount of the inclination angle of photovoltaic panel support (6), and automatically alarms when the change amount of the inclination angle exceeds the threshold.

2. The method of claim 1, wherein: The displacement collector (2) comprises an RS-485 four-channel communication board (201), a first WiFi receiving board (202) and a first WiFi double antenna (203); the displacement collector (2) is built-in operating system.

3. The method of claim 1, wherein: The centralized collector (3) comprises a PC-104 mainboard (301), a DC-DC power board (302), a second WiFi receiving board (303), a CPU (304), a RAM memory card (305), a solid state disk (306) and a second WiFi double antenna (307); the solid state disk (306) is built-in operating system, and the solid state disk (306) comprises a first judgment module (308); the first judgment module (308) is used for judging the WiFi signal of the displacement collector (2), and the first judgment module (308) is used for judging the repeatability of the data of the displacement collector (2).

4. The method of claim 1, wherein: The control base station (5) comprises a control module (501), a wireless communication module (502), a storage module (503) and a second judgment module (504); the control module (501) is used for controlling the moving route of the movable collector carrier (4); the second judgment module (504) is used for judging the change amount of the inclination angle of the photovoltaic panel support (6), and automatically alarming when the change amount of the inclination angle exceeds a threshold value.

5. The method of claim 1, wherein: The movable collector carrier (4) is a rotorless unmanned aerial vehicle.

6. The method of claim 1, wherein: The built-in operating systems of the displacement collector (2) and the centralized collector (3) are both Linux operating systems.

7. The method of claim 1, wherein: The displacement collector (2) is connected with the displacement sensor (1) through an RS-485 communication cable (7).

8. The method of claim 1, wherein: The displacement collector (2) is connected with four displacement sensors (1) simultaneously.

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