A photovoltaic tracking system aging test device

Abstract

The utility model belongs to photovoltaic tracking system test related equipment technical field discloses a kind of photovoltaic tracking system ageing test device, including the test cabin for placing photovoltaic tracker, the inside of test cabin is provided with main controller, electrical cabinet and environmental control module, test cabin outside is provided with a control panel connected with main controller, environmental control module includes temperature control unit for simulating high-low temperature environment;It further includes the inclination detection element for detecting the inclination angle of photovoltaic module, and the inclination detection element is installed on photovoltaic module;The utility model integrates each module of photovoltaic tracker to carry out one-time rapid test, and the repeatability of ageing test is good, and the efficiency of ageing test is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of photovoltaic tracking system testing equipment, and in particular to a photovoltaic tracking system aging test device. Background Technology

[0002] Photovoltaic tracking systems automatically adjust the angle of photovoltaic modules to track the sun's trajectory, maximizing the amount of solar radiation received by the modules and significantly improving their power generation efficiency. This has made them the mainstream choice for centralized power plants, mountain ponds, and agricultural-photovoltaic complementary applications.

[0003] To test the stability of a photovoltaic tracking system over a long period of time, an aging test is required.

[0004] A Chinese utility model patent with patent application number 202420264413.X proposes a drive control integrated system suitable for solar tracking brackets. This patent reveals that the photovoltaic tracking system includes modules such as a drive unit, a mechanical transmission unit, and an electrical control load. The aging test method for the photovoltaic tracking system mentioned in this patent mainly relies on manual labor, testing each module of the photovoltaic tracking system separately. This method suffers from numerous drawbacks, including long testing times, low testing efficiency, and large testing errors. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide an aging test device for a photovoltaic tracking system, which integrates various modules of the photovoltaic tracker for one-time rapid testing, has good repeatability of aging test, and greatly improves the efficiency of aging test.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] An aging test device for a photovoltaic tracking system includes a test chamber for placing a photovoltaic tracker. The test chamber is equipped with a main controller, an electrical box and an environmental control module. A control panel connected to the main controller is located on the outside of the test chamber. The environmental control module includes a temperature control unit for simulating high and low temperature environments.

[0008] It also includes a tilt detection element for detecting the tilt angle of photovoltaic modules, which is installed on the photovoltaic modules.

[0009] The following are further optimizations of the above technical solution by this utility model:

[0010] The environmental control module includes a salt spray control unit for simulating a salt spray corrosion environment.

[0011] Further optimization: The temperature control unit includes a temperature control box and a temperature detection element. The temperature control box is used to introduce airflow of the corresponding temperature into the test chamber, and the temperature detection element is used to monitor the temperature inside the test chamber. Both the temperature control box and the temperature detection element are electrically connected to the main controller.

[0012] Further optimization: The electrical box is equipped with a circulating drive power supply unit and a current detection element. The circulating drive power supply unit is electrically connected to both the main controller and the photovoltaic tracker. The current detection element is used to detect the power supply current of the photovoltaic tracker.

[0013] Further optimization: The tilt detection element adopts a single-axis tilt sensor.

[0014] Further optimization: The temperature detection element adopts a platinum resistance temperature sensor.

[0015] Further optimization: The current detection element adopts a Hall current sensor.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] 1. This utility model adopts the above-mentioned technical solution, accelerates the aging process through cyclic testing, and uses a data acquisition system inside the test chamber to accurately collect data on various performance aspects and failure modes of the photovoltaic tracking system. This enables the integration of various modules of the photovoltaic tracking system for rapid testing at one time, realizing rapid testing and evaluation of key tracking performance indicators of the photovoltaic tracking system, thereby greatly improving the efficiency of aging testing.

[0018] 2. This utility model uses a temperature control module and a salt spray control module to precisely control and adjust the environment inside the test chamber, thereby effectively ensuring the repeatability of the aging test in this utility model. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the test chamber in an embodiment of this utility model;

[0022] Figure 3This is a control principle diagram of an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the testing process for this utility model.

[0024] In the diagram: 1. Photovoltaic tracker; 2. Test chamber; 3. Main controller; 4. Electrical box; 401. Cyclic drive power supply unit; 402. Current detection element; 5. Control panel; 6. Temperature control unit; 601. Temperature control box; 602. Temperature detection element; 7. Photovoltaic module; 8. Tilt angle detection element; 9. Salt spray control unit. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1-4 As shown, a photovoltaic tracking system aging test device includes a test chamber 2 for placing a photovoltaic tracker 1.

[0028] In this embodiment, the photovoltaic tracker 1 can adopt a traditional single-axis rotary deceleration structure, which is a complete system including a main motor rotation controller module, a mechanical transmission structure, and motor cables.

[0029] The structure and working principle of the photovoltaic tracker 1 are existing technologies and are well known to those skilled in the art, so they will not be described in detail here.

[0030] In this embodiment, the photovoltaic module 7 controlled by the photovoltaic tracker 1 is installed outdoors, and the photovoltaic module 7 can be controlled at the same time as the aging test.

[0031] like Figure 1 and Figure 2 As shown, the test chamber 2 is equipped with a main controller 3, an electrical box 4, and an environmental control module.

[0032] In this embodiment, the main controller 3 can be a commercially available PLC controller, such as the Siemens Smart200 PLC controller.

[0033] The main controller 3 is connected to the test chamber 2 via a communication line to facilitate data transmission, and the communication uses the RS485 communication protocol.

[0034] In this embodiment, the connection structure and principle between the main controller 3 and the test chamber 2 and the electrical box 4 are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0035] It should be noted that this application does not improve the Siemens Smart200 controller programmable program, but only utilizes its existing control program and principles to realize the functions of collecting, calculating and comparing aging test data of photovoltaic tracking system and HMI display.

[0036] Preferably, a control panel 5 connected to the main controller 3 is provided on the outside of the test chamber 2, and the environmental control module includes a temperature control unit 6 for simulating high and low temperature environments.

[0037] In this embodiment, the test chamber 2 and control panel 5 can be commercially available closed aging test chambers and HMI operation panels.

[0038] In this embodiment, the present invention utilizes automation technology to integrate the various modules of the photovoltaic tracker 1, and uses the main controller 3 as a comprehensive data processing platform. The main controller 3 controls the temperature control unit 6, which can simulate the environmental conditions for long-term use of the photovoltaic tracker 1 inside the test chamber 2, and realize automatic switching continuous testing under different ambient temperatures.

[0039] By performing a rapid one-time test on all modules of the photovoltaic tracker 1, the key tracking performance indicators of the photovoltaic tracker 1 can be tested and evaluated quickly, thereby greatly improving the efficiency of aging test.

[0040] like Figures 1-3 As shown, the temperature control unit 6 includes a temperature control box 601 and a temperature detection element 602. The temperature control box 601 is used to introduce airflow of the corresponding temperature into the test chamber 2, and the temperature detection element 602 is used to monitor the temperature inside the test chamber 2. Both the temperature control box 601 and the temperature detection element 602 are electrically connected to the main controller 3.

[0041] In this embodiment, the temperature control box 601 can be a commercially available high and low temperature gas generator.

[0042] For example, temperature control box 601 may include a box body and an air outlet located on the top of the box body. The box body is equipped with a heating end, a cooling end and a relay. The heating end includes an electric heating wire for heating the air, the cooling end includes a variable frequency compressor for cooling the air, and the relay is used to control the on and off of the electric heating wire and the variable frequency compressor.

[0043] In this embodiment, the internal components of the temperature control box 601, as well as the structure, connection relationship, and heating and cooling principles between the components, are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0044] Preferably, the temperature sensing element 602 is a platinum resistance temperature sensor.

[0045] In this embodiment, the temperature sensing element 602 can be a commercially available model, such as the PODT102 platinum resistance temperature sensor produced by Beijing Saiswei Measurement & Control Technology Co., Ltd.

[0046] In this embodiment, the temperature control box 601 and the temperature detection element 602 enable the temperature inside the test chamber 2 of this invention to be precisely controlled between -30°C and 50°C. This temperature range can cover the actual ambient temperature of most areas in China where photovoltaic modules 7 can be installed, thereby effectively simulating the operating environment of the photovoltaic tracking system under different temperature conditions.

[0047] Preferably, the electrical box 4 is equipped with a circulating drive power supply unit 401 and a current detection element 402. The circulating drive power supply unit 401 is electrically connected to both the main controller 3 and the photovoltaic tracker 1. The current detection element 402 is used to detect the power supply current of the photovoltaic tracker 1.

[0048] In this embodiment, the cyclic drive power supply unit 401 is used to control the input of power supply to start, maintain and turn off.

[0049] Since the photovoltaic tracker 1 relies on the electrical energy generated by the photovoltaic module 7 to operate, it has power during the day but will automatically turn off at night when there is no sun.

[0050] This invention utilizes a cyclic drive power supply unit 401 to simulate actual power supply conditions, which can automatically turn on and start the photovoltaic tracker 1 during the day and automatically turn off and shut down the power input terminal at night, while also meeting the requirements for aging cycle testing of the photovoltaic tracker 1.

[0051] In this embodiment, the main controller 3 can automatically control the temperature of the test chamber 2 according to the preset aging schedule, thereby realizing automated control of the test process.

[0052] The main controller 3 automatically controls the start and stop of the power supply unit 401 to realize the aging test process of the photovoltaic tracker 1.

[0053] During this cycle, the temperature inside the test chamber 2 is continuously cyclically adjusted from -30℃ to 50℃ under the precise control of the temperature control unit 6. Starting from -30℃, each 5℃ interval is a test interval node, and the test is performed 30 times at each interval node temperature with a frequency of 10 minutes on and 10 minutes off.

[0054] When the test conditions are met, the main controller 3 can automatically control the switching of test interval nodes.

[0055] This invention accelerates the aging process of the photovoltaic tracker 1 through cyclic testing, while the control panel 5 supports the visualization of aging test conditions.

[0056] Meanwhile, the main controller 3 is used to automatically monitor the operation of this utility model, which can accurately collect data on various performance aspects and failure modes of the photovoltaic tracker 1, thereby improving the automation level of this utility model and greatly improving the efficiency of the aging test of the photovoltaic tracker 1.

[0057] Preferably, the current detection element 402 is a Hall current sensor.

[0058] In this embodiment, the current sensing element 402 can be a commercially available Hall current sensing sensor, such as the CSM100LAT2 series closed-loop Hall current sensor produced by Nanjing Qihuo Technology Co., Ltd.

[0059] In this embodiment, the current detection element 402 is used to monitor the magnitude of the power supply current during the operation of the photovoltaic tracker 1, and can transmit the collected current value to the main controller 3.

[0060] Preferably, an aging test device for a photovoltaic tracking system further includes a tilt angle detection element 8 for detecting the tilt angle of the photovoltaic module 7, the tilt angle detection element 8 being mounted on the photovoltaic module 7.

[0061] Preferably, the tilt detection element 8 is a single-axis tilt sensor.

[0062] In this embodiment, the tilt detection element 8 can be a commercially available single-axis tilt test sensor, such as the NS-QJ01 series single-axis tilt sensor produced by Shanghai Tianmu Automation Instrument Co., Ltd.

[0063] In this embodiment, the tilt angle detection element 8 is used to monitor the tilt angle of the photovoltaic module 7 in real time and transmit the real-time tilt angle value of the photovoltaic module 7 to the main controller 3.

[0064] Furthermore, by using the tilt angle detection element 8 and the current detection element 402, it is possible to accurately determine the stability of the tracking accuracy of the photovoltaic tracker 1 under different temperature environments and the changes in current during operation during the aging test.

[0065] In this embodiment, the main controller 3 and the test chamber 2 are the core of the entire aging test device. The main controller 3 can control the test chamber 2, the temperature control unit 6, the tilt angle detection element 8, the circulating drive power supply unit 401, the current detection element 402 and the photovoltaic tracker 1.

[0066] Example 2

[0067] This embodiment is basically the same as Embodiment 1, except that:

[0068] The environmental control module includes a salt spray control unit 9 for simulating a salt spray corrosion environment.

[0069] In this embodiment, the salt spray control unit 9 can be a commercially available model, mainly including a salt solution tank, a salt spray exhaust pipe, a salt spray nozzle, and a salt spray settling collector.

[0070] All components, structures, and salt spray generation principles mentioned in the salt spray control unit 9 are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0071] In this embodiment, some photovoltaic modules 7 will be installed in areas near the sea. At this time, a salt spray control unit 9 can be added to the test chamber 2 to simulate the high-salt and high-humidity operating environment at the seaside.

[0072] like Figure 4 As shown, the process for conducting an aging test on photovoltaic tracker 1 using the aforementioned photovoltaic tracking system aging test device is as follows:

[0073] S1. Set the preset parameters on control panel 5;

[0074] S2. The parameters set at control panel 5 are transmitted to the data acquisition system built into main controller 3 and test chamber 2;

[0075] S3. Start the test chamber 2, and at the same time, the temperature control unit 6 is also started. The temperature control unit 6 is used to automatically and cyclically adjust the temperature inside the test chamber 2.

[0076] S4. The cycle drive power supply unit 401 and the current detection element 402 start simultaneously to supply power to the motor of the photovoltaic tracker 1, and the photovoltaic tracker 1 starts to work.

[0077] S5, the tilt angle detection element 8 continuously monitors the tilt angle of the photovoltaic module 7, and the current detection element 402 continuously monitors and collects the power supply current of the photovoltaic tracker 1 in real time, and continuously feeds the collected data back to the main controller 3 and the test chamber 2.

[0078] S6. The final aging test results are output to control panel 5 for display.

[0079] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic tracking system aging test apparatus, comprising a test chamber (2) for housing a photovoltaic tracker (1), characterized in that, The test chamber (2) is equipped with a main controller (3), an electrical box (4) and an environmental control module. The test chamber (2) is equipped with a control panel (5) connected to the main controller (3) on the outside. The environmental control module includes a temperature control unit (6) for simulating high and low temperature environments. It also includes a tilt detection element (8) for detecting the tilt angle of the photovoltaic module (7), which is mounted on the photovoltaic module (7).

2. The photovoltaic tracking system aging test device according to claim 1, characterized in that, The environmental control module includes a salt spray control unit (9) for simulating a salt spray corrosion environment.

3. The photovoltaic tracking system aging test device according to claim 1 or 2, characterized in that, The temperature control unit (6) includes a temperature control box (601) and a temperature detection element (602). The temperature control box (601) is used to supply airflow of the corresponding temperature to the test chamber (2). The temperature detection element (602) is used to monitor the temperature inside the test chamber (2). Both the temperature control box (601) and the temperature detection element (602) are electrically connected to the main controller (3).

4. The photovoltaic tracking system aging test device according to claim 1 or 2, characterized in that, The electrical box (4) is equipped with a circulating drive power supply unit (401) and a current detection element (402). The circulating drive power supply unit (401) is electrically connected to the main controller (3) and the photovoltaic tracker (1). The current detection element (402) is used to detect the power supply current of the photovoltaic tracker (1).

5. The photovoltaic tracking system aging test device according to claim 1 or 2, characterized in that, The tilt detection element (8) is a single-axis tilt sensor.

6. The photovoltaic tracking system aging test device according to claim 3, characterized in that, The temperature sensing element (602) is a platinum resistance temperature sensor.

7. The photovoltaic tracking system aging test device according to claim 4, characterized in that, The current sensing element (402) is a Hall current sensor.

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