Testing device for testing multi-type photovoltaic power generation performance and testing method thereof

Abstract

The invention relates to a testing device for testing multi-type photovoltaic power generation performance and a testing method thereof.The testing device comprises a plurality of testing modules and an electric quantity information monitoring module, and each testing module is located between a grid-connected bus and a corresponding photovoltaic module; the test module comprises a first current detection unit, a DC-DC conversion unit and a second current detection unit, the signal input end of the first current detection unit is used for collecting electric quantity information of the photovoltaic module before the photovoltaic module is input into the DC-DC conversion unit, and the signal input end of the second current detection unit is used for collecting electric quantity information of the photovoltaic module after the photovoltaic module is input into the DC-DC conversion unit; by integrating a plurality of test modules, complex equipment and operation required in a traditional photovoltaic panel power generation performance test are simplified into a unified test device, each test module independently detects and processes electric quantity information of different photovoltaic modules, and automatic data acquisition and monitoring are realized in cooperation with an electric quantity information monitoring module and a remote terminal module. And the consumption of manpower and material resources is reduced.

Description

Technical Field

[0001] The present application relates to the field of testing the performance of multiple types of photovoltaic power generation, and in particular to a testing device and a testing method for testing the performance of multiple types of photovoltaic power generation. Background Art

[0002] In the existing technology, the power generation performance test of photovoltaic panels currently requires the use of solar cell testers, solar simulators, photovoltaic component test loads, environmental simulation test boxes and other test equipment at the same time. The test preparation work is complicated and requires multiple testers to cooperate in the joint test, which requires a high number of equipment and personnel. If the power generation performance comparison test of multiple photovoltaic panels is carried out at the same time, multiple sets of test equipment and multiple testers are required to cooperate in the joint test, which takes a long time and consumes a lot of manpower and material resources.

[0003] Application Contents In order to solve the problem that the power generation performance test of traditional photovoltaic panels requires multiple sets of testing equipment and multiple testers to cooperate in the test, the test time is long, and a lot of manpower and material resources are consumed, the present application provides a test device and a test method for testing the power generation performance of multiple types of photovoltaics.

[0004] The present application provides a test device for testing the performance of multiple types of photovoltaic power generation using the following technical solutions: A test device for testing multi-type photovoltaic power generation performance, comprising a test module, an electric quantity information monitoring module and a remote terminal module, wherein a plurality of the test modules are provided, and each of the test modules is located between a grid-connected bus and a corresponding photovoltaic module, wherein the test module comprises a first current detection unit, a DC-DC converter unit and a second current detection unit connected in sequence, wherein a signal input end of the first current detection unit is used to collect electric quantity information before the photovoltaic module is input into the DC-DC converter unit, a signal output end of the first current detection unit is connected to a first signal input end of the electric quantity information monitoring module, a signal input end of the second current detection unit is used to collect electric quantity information after the photovoltaic module is input into the DC-DC converter unit, a signal output end of the second current detection unit is connected to a second signal input end of the electric quantity information monitoring module, a remote communication end of the electric quantity information monitoring module is connected to a first data communication end of the remote terminal module, and a second data communication end of the remote terminal module is connected to a remote communication end of the DC-DC converter unit, so as to switch different types of converters in the DC-DC converter units of each test module, and then perform different types of power generation performance comparison experiments.

[0005] By adopting the above technical solution and integrating multiple test modules, the complex equipment and operations required in the traditional photovoltaic panel power generation performance test are simplified into a unified test device. Each test module independently detects and processes the power information of different photovoltaic modules, and cooperates with the power information monitoring module and the remote terminal module to realize automatic data collection and monitoring. Through the remote terminal module, the device can switch different types of DC-DC converters to realize the power generation performance comparison test of multiple types of photovoltaic modules, thereby reducing the demand for equipment and testers, significantly simplifying the test process, shortening the test time, and reducing the consumption of manpower and material resources.

[0006] Preferably, the first current detection unit comprises at least a first DC current transformer, a first end of the first DC current transformer is connected to the photovoltaic component, and a second end of the DC current transformer is connected to a DC input end of the DC-DC converter unit.

[0007] By adopting the above technical solution, the power information of the photovoltaic module before entering the DC-DC conversion unit can be effectively obtained through the setting of the first current detection unit, thereby providing accurate data support for subsequent power comparison and analysis, ensuring the accuracy and reliability of the test results, and further improving the efficiency of multi-type photovoltaic power generation performance tests.

[0008] Preferably, an input switch and a diode connected in series are provided between the first end of the first DC current transformer and the photovoltaic component, the first end of the diode is connected to the photovoltaic component, the second end of the diode is connected to the first end of the input switch, and the second end of the input switch is connected to the first end of the first DC current transformer.

[0009] By adopting the above technical solution, it is possible to effectively prevent reverse current from damaging photovoltaic modules and detection equipment, and at the same time control the current on and off through the input switch, thereby improving the safety and reliability of the test system.

[0010] Preferably, the second current detection unit includes at least a second DC current transformer, a first end of the second DC current transformer is connected to the DC output end of the DC-DC converter unit, and a second end of the second DC current transformer is connected to the grid-connected bus.

[0011] By adopting the above technical solution and setting up the second current detection unit, the power information of the photovoltaic module after passing through the DC-DC conversion unit can be effectively collected, thereby ensuring comprehensive monitoring and comparative analysis of the power before and after the conversion, improving the comprehensiveness and accuracy of the test, and further optimizing the effect of the power generation performance test.

[0012] Preferably, an output switch is provided between the second end of the second DC current transformer and the grid-connected bus, a first end of the output switch is connected to the second end of the second DC current transformer, and a second end of the output switch is connected to the grid-connected bus.

[0013] By adopting the above technical solution, it is easy to control the current connection between the photovoltaic module and the grid-connected bus, ensuring the safe transmission of current and flexible control of the test module, thereby improving the operability of the entire test device and the safety of the test process.

[0014] Preferably, the testing device for testing the performance of multiple types of photovoltaic power generation further includes a grid-connected switch located on the grid-connected bus, and each of the test modules is connected to the grid-connected switch at a bus node connected to the grid-connected bus.

[0015] By adopting the above technical solution, it is possible to set a grid-connected switch on the grid-connected bus to conveniently control the connection status of each test module and the grid-connected bus, thereby realizing unified management and coordination of multiple modules, improving the integration of the test device and the overall operating efficiency, and effectively reducing equipment conflicts and resource waste during the test process.

[0016] Preferably, the DC-DC converter unit comprises at least a unit body and a converter, and the converter is detachably connected to the unit body.

[0017] By adopting the above technical solution, the detachable connection design of the DC-DC converter unit can make the replacement and maintenance of the converter more convenient, thereby improving the flexibility and adaptability of the test device, better meeting the needs of different types of photovoltaic power generation performance tests, extending the service life of the equipment and reducing maintenance costs.

[0018] A testing method for testing the performance of multiple types of photovoltaic power generation, using a testing device for testing the performance of multiple types of photovoltaic power generation, the testing method comprising: Obtain experimental requirements information; According to the experimental requirement information, matching corresponding experimental modules, the experimental modules at least include a conversion voltage experimental module, a photovoltaic power generation efficiency experimental module and a DC-DC converter unit performance experimental module; Generate hardware detection points according to the experimental module to detect whether the hardware material connected to the hardware detection points is correct; If it is detected that the hardware material selection of the hardware detection point is correct, the first power information of the first current detection unit and the second power information of the second current detection unit are obtained, and the first power information and the second power information are sent to the remote terminal module; The remote terminal module is controlled to analyze the first power information and the second power information, and to generate and push a corresponding test report.

[0019] By adopting the above technical solution, it is possible to achieve accurate configuration for different test requirements by matching different experimental modules, ensuring the reasonable allocation and correct connection of each photovoltaic module and DC-DC converter unit in the experiment, thereby effectively improving the pertinence and scientific nature of the test, ensuring the validity and consistency of the experimental results, and being able to determine whether the actual output of the photovoltaic module meets the rated parameters by analyzing and comparing the first power information and the second power information, thereby accurately evaluating the photovoltaic power generation performance and generating a detailed test report, providing data support for further optimizing and improving the performance of photovoltaic modules, and significantly improving the scientific nature of the test and the application value of the data.

[0020] Preferably, in the step of generating hardware detection points according to the experimental module, the hardware detection points at least include conversion voltage detection points, photovoltaic power generation efficiency detection points and DC-DC converter unit performance detection points; The following steps are also included: If the experimental module is a conversion voltage experimental module, a conversion voltage detection point is generated, and the conversion voltage detection point is used to ensure that the DC voltage levels between the various photovoltaic modules are different, and to ensure that the brands and types of the converters required in the various DC-DC converter units are the same; If the experimental module is a photovoltaic power generation efficiency experimental module, a photovoltaic power generation efficiency detection point and a pre-detection point are generated. The photovoltaic power generation efficiency detection point is used to ensure that the brands of the photovoltaic modules are different and that the brands of the converters required in the DC-DC converter units are the same. The pre-detection point is used to ensure that the output voltage of each photovoltaic module remains consistent through the output voltage of the DC-DC converter unit. If the experimental module is a DC-DC converter unit performance experimental module, a DC-DC converter unit performance detection point and a switching detection point are generated. The DC-DC converter unit performance detection point is used to ensure that the brand types of various photovoltaic components are the same, and that the brand types of the converters required in various DC-DC converter units are different. The switching detection point is used to ensure that the converters required in each DC-DC converter unit reach a preset number and that the logic switching is correct.

[0021] By adopting the above technical solution, it is possible to determine whether the actual output of the photovoltaic module meets the rated parameters by analyzing and comparing the first power information and the second power information, thereby accurately evaluating the photovoltaic power generation performance and generating a detailed test report, providing data support for further optimizing and improving the performance of the photovoltaic module, and significantly improving the scientific nature of the test and the application value of the data.

[0022] Preferably, the step of controlling the remote terminal module to analyze the first power information and the second power information, and generating and pushing a corresponding test report includes: Obtain the type information of the photovoltaic module corresponding to the test module; Determining rated parameters according to the type information; comparing the first power information with the rated parameter, and comparing the second power information with the rated parameter, to generate corresponding comparison results; The first power information, the second power information and the comparison result are counted, and a corresponding test report is generated and pushed.

[0023] By adopting the above technical solution, it is possible to obtain the type information of the photovoltaic module and determine its rated parameters, effectively compare the first power information and the second power information, generate corresponding comparison results, and statistically analyze these data to generate an accurate test report, thereby providing a reliable basis for the comprehensive evaluation of the performance of the photovoltaic module, optimizing the overall function of the test device, and enhancing the practicality and guidance of the test report.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application simplifies the complex equipment and operations required in the traditional photovoltaic panel power generation performance test into a unified test device by integrating multiple test modules. Each test module independently detects and processes the power information of different photovoltaic modules, and cooperates with the power information monitoring module and the remote terminal module to realize automatic data collection and monitoring. Through the remote terminal module, the device can switch different types of DC-DC converters to realize the power generation performance comparison test of multiple types of photovoltaic modules, thereby reducing the demand for equipment and testers, significantly simplifying the test process, shortening the test time, and reducing the consumption of manpower and material resources; That is, multiple test modules are integrated, and each test module is located between the photovoltaic module and the grid-connected bus. In this way, multiple photovoltaic panels can be tested at the same time through one system, without the need to configure separate test equipment for each photovoltaic panel, thereby reducing the number of equipment and the complexity of test preparation. Through the cooperation of the power information monitoring module and the remote terminal module, the test device can automatically collect and monitor the power information of each test module, and control the test module through the remote terminal module. The DC-DC converter unit in the test device can switch between different types of converters according to the test requirements to achieve a comparative experiment on the power generation performance of different types of photovoltaic panels. In this way, the performance test of multiple types of photovoltaic panels can be completed more efficiently and the test time can be reduced. Since the test device integrates multiple functional modules and realizes automatic control, it no longer needs to use multiple independent test equipment or multi-person collaborative operation compared to traditional methods, thus greatly simplifying the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a flowchart diagram of a testing device for testing the performance of multiple types of photovoltaic power generation according to an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of a partial circuit structure of a testing device for testing the performance of multiple types of photovoltaic power generation according to an embodiment of the present application.

[0027] Figure 3 It is a flow chart of a testing method for testing the performance of multiple types of photovoltaic power generation according to an embodiment of the present application.

[0028] Figure 4 It is a flow chart for implementing step S20 in a testing method for testing the performance of multiple types of photovoltaic power generation in an embodiment of the present application.

[0029] Figure 5 It is a flow chart for implementing step S40 in a testing method for testing the performance of multiple types of photovoltaic power generation in an embodiment of the present application.

[0030] Description of reference numerals: 1. Test module; 11. First current detection unit; 12. DC-DC conversion unit; 13. Second current detection unit; 14. Input switch; 15. Diode; 16. Output switch; 2. Power information monitoring module; 3. Remote terminal module; 4. Grid-connected switch. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] like Figure 1-2As shown, a test device for testing the performance of multiple types of photovoltaic power generation includes a test module 1, an electric quantity information monitoring module 2 and a remote terminal module 3. The test module 1 is provided with a plurality of modules, and each of the test modules 1 is located between the grid-connected bus and the corresponding photovoltaic module. The test module 1 includes a first current detection unit 11, a DC-DC conversion unit 12 and a second current detection unit 13 connected in sequence. The signal input end of the first current detection unit 11 is used to collect the electric quantity information before the photovoltaic module is input into the DC-DC conversion unit 12. The signal output end of the first current detection unit 11 is connected to the first signal input end of the electric quantity information monitoring module 2. The signal input end of the second current detection unit 13 is used to collect the power information after the photovoltaic component is input into the DC-DC conversion unit 12, the signal output end of the second current detection unit 13 is connected to the second signal input end of the power information monitoring module 2, the remote communication end of the power information monitoring module 2 is connected to the first data communication end of the remote terminal module 3, and the second data communication end of the remote terminal module 3 is connected to the remote communication end of the DC-DC conversion unit 12, so as to switch different types of converters in the DC-DC conversion unit 12 of each test module 1, and then conduct different types of power generation performance comparison experiments.

[0033] In this embodiment, multiple test modules 1 are integrated, and each test module 1 is located between the photovoltaic module and the grid-connected bus. In this way, multiple photovoltaic panels can be tested at the same time through one system, without the need to configure a separate test device for each photovoltaic panel, thereby reducing the number of devices and the complexity of test preparation. Through the cooperation of the power information monitoring module 2 and the remote terminal module 3, the test device can automatically collect and monitor the power information of each test module 1, and control the test module 1 through the remote terminal module 3. The DC-DC converter unit 12 in the test device can switch between different types of converters according to the test requirements to achieve a comparative experiment on the power generation performance of different types of photovoltaic panels. In this way, the performance test of multiple types of photovoltaic panels can be completed more efficiently and the test time can be reduced. Since the test device integrates multiple functional modules and realizes automatic control, it no longer needs to use multiple independent test devices or multi-person collaborative operation compared to the traditional method, thus greatly simplifying the test process.

[0034] The specific scheme is: 14 groups of photovoltaics of different brands and types can be connected at the same time, and the 14 groups of photovoltaics are connected to the DC-DC converter unit 12 (converter) through the input switch 14. The DC-DC converter unit 12 (converter) converts the 14 groups of DC power of different DC voltage levels into a consistent DC voltage, and then converges after passing through the output switch 16. After convergence, it can be connected to the grid or connected to the experimental load through the total output switch 16; for the above-mentioned photovoltaics before being connected to the DC-DC converter unit 12 through the input switch 14 and before the photovoltaics are converted by the DC-DC converter unit 12 and connected to the output switch 16, they are all connected to a shunt or a Hall effect transformer and other DC current transformers, and then connected to the power information monitoring device to monitor the power information of each group of photovoltaics before and after entering the DCDC module, including voltage, current, power, etc. This power information monitoring device has a communication function, which can be uploaded to a computer, and the photovoltaic power information can be remotely viewed through a computer, which is convenient for test personnel to count and calculate relevant parameters.

[0035] In summary, by integrating multiple test modules 1, the complex equipment and operations required in the traditional photovoltaic panel power generation performance test are simplified into a unified test device. Each test module 1 independently detects and processes the power information of different photovoltaic components, and cooperates with the power information monitoring module 2 and the remote terminal module 3 to realize automatic data collection and monitoring. Through the remote terminal module 3, the device can switch different types of DC-DC converters to realize the power generation performance comparison test of multiple types of photovoltaic components, thereby reducing the demand for equipment and testers, significantly simplifying the test process, shortening the test time, and reducing the consumption of manpower and material resources.

[0036] Specifically, Figure 2 As shown, the first current detection unit 11 at least includes a first DC current transformer, a first end of the first DC current transformer is connected to the photovoltaic component, and a second end of the DC current transformer is connected to the DC input end of the DC-DC conversion unit 12.

[0037] In this embodiment, the first current detection unit 11 mainly includes a first DC current transformer, and its technical effect is reflected in the ability to accurately monitor the DC current output by the photovoltaic module. The first end of the first DC current transformer is directly connected to the photovoltaic module to ensure the direct collection of current data, and the second end is connected to the DC input end of the DC-DC converter unit 12, so that the current output by the photovoltaic module can be accurately detected by the transformer before entering the converter unit. When the photovoltaic module generates direct current, the current passes through the first DC current transformer, and the transformer generates a corresponding voltage signal according to the magnitude of the current. This signal is then received and processed by the power information monitoring device to obtain real-time current data. These data can not only be used to monitor the power generation state of the photovoltaic module, but also can be compared with the rated parameters of the photovoltaic module to evaluate its power generation efficiency. At the same time, these current information is crucial to the DC-DC converter unit 12, because the converter unit needs to adjust its working state according to the magnitude of the current to ensure that the output voltage of the photovoltaic module can be effectively converted into the voltage level required by the system. Through this linkage mechanism, the entire system can efficiently and accurately test and evaluate the performance of photovoltaic power generation, while also providing important data support for system optimization and improvement of photovoltaic module performance.

[0038] In summary, by setting the first current detection unit 11, the power information of the photovoltaic component before entering the DC-DC conversion unit 12 can be effectively obtained, thereby providing accurate data support for subsequent power comparison and analysis, ensuring the accuracy and reliability of the test results, and further improving the efficiency of multi-type photovoltaic power generation performance tests.

[0039] Specifically, Figure 2 As shown, an input switch 14 and a diode 15 connected in series are provided between the first end of the first DC current transformer and the photovoltaic component, the first end of the diode 15 is connected to the photovoltaic component, the second end of the diode 15 is connected to the first end of the input switch 14, and the second end of the input switch 14 is connected to the first end of the first DC current transformer.

[0040] In this embodiment, in the technical solution, the first end of the first DC current transformer is connected in series with the photovoltaic module through the input switch 14 and the diode 15. Such a design has multiple technical effects: the role of the diode 15 is to ensure that the current flows in one direction and protect the circuit from damage by overload or reverse current. Its first terminal is directly connected to the photovoltaic module to receive the DC current generated by the photovoltaic module; the second terminal is connected to the first end of the input switch 14 to form a current channel; the main function of the input switch 14 is to control the on and off of the current. Its first end is connected to the diode 15, and the second end is connected to the first end of the first DC current transformer, thereby completing the establishment of the current channel. When the photovoltaic module generates current, the current first flows through the diode 15 to ensure the correctness of the current direction, and then passes through the input switch 14. When the switch is closed, the current continues to flow to the first DC current transformer. The transformer detects and transmits the current signal to the monitoring device to realize real-time monitoring of the output current of the photovoltaic module. This configuration not only improves the safety of the system and prevents possible current reverse problems, but also can flexibly turn on or off the current through the control of the input switch 14, which facilitates the performance test and system maintenance of the photovoltaic components and ensures the reliability and stability of the entire photovoltaic power generation performance test system.

[0041] In summary, the damage to the photovoltaic components and the detection equipment caused by the reverse current can be effectively prevented, and the current on and off is controlled by the input switch 14, thereby improving the safety and reliability of the test system.

[0042] Specifically, Figure 2 As shown, the second current detection unit 13 at least includes a second DC current transformer, a first end of the second DC current transformer is connected to the DC output end of the DC-DC converter unit 12, and a second end of the second DC current transformer is connected to the grid-connected bus.

[0043] In this embodiment, the second current detection unit 13 is equipped with a second DC current transformer, and its technical effect is mainly reflected in the accurate monitoring and control of the output current of the DC-DC converter unit 12. The first end of the second DC current transformer is directly connected to the DC output end of the DC-DC converter unit 12 to ensure that the current output by the converter can be directly measured, and the second end is connected to the grid bus, which means that the current output by the converter can be detected by the transformer before being incorporated into the grid. After the DC-DC converter unit 12 converts the DC power of the photovoltaic module into the required voltage level, the current passes through the second DC current transformer, and the transformer generates a corresponding signal according to the magnitude of the current. This signal is received and processed by the power information monitoring device, thereby obtaining real-time current data. These data can be used to monitor the working efficiency and stability of the converter, and can also be used to ensure the quality and safety of the grid-connected current. Through this configuration, the entire system can achieve effective monitoring of the output current of the photovoltaic power generation system, optimize power output, improve energy utilization efficiency, and ensure that the grid-connected current meets the requirements of the grid and ensures the stable operation of the grid.

[0044] In summary, by setting the second current detection unit 13, the power information of the photovoltaic component after passing through the DC-DC conversion unit 12 is effectively collected, thereby ensuring comprehensive monitoring and comparative analysis of the power before and after the conversion, improving the comprehensiveness and accuracy of the test, and further optimizing the effect of the power generation performance test.

[0045] Specifically, Figure 2 As shown, an output switch 16 is provided between the second end of the second DC current transformer and the grid-connected bus, a first end of the output switch 16 is connected to the second end of the second DC current transformer, and a second end of the output switch 16 is connected to the grid-connected bus.

[0046] In the present embodiment, in the configuration, an output switch 16 is provided between the second end of the second DC current transformer and the grid-connected bus. Such a design allows for more sophisticated control and management of the DC current output by the DC-DC converter unit 12. The first end of the second DC current transformer is connected to the DC output end of the DC-DC converter unit 12 for monitoring and measuring the current output by the converter, while the second end thereof is connected to the grid-connected bus through the output switch 16. The first end of the output switch 16 is connected to the second end of the second DC current transformer, and the second end is directly connected to the grid-connected bus, forming a path for the current to flow to the grid. When the current output by the converter needs to be fed into the grid, the output switch 16 is closed, and the current passes through the second DC current transformer, and its monitoring data is used to ensure that the current meets the grid-connected requirements, and then the current flows to the grid-connected bus and is connected to the grid system. If disconnection or maintenance is required, the output switch 16 is disconnected to cut off the current, thereby ensuring the safety and flexibility of the system. This structure not only improves the safety and reliability of the system, but also allows the operator to flexibly control the grid-connected current and optimize power output according to grid demand or the output status of the photovoltaic system, thus ensuring the stable operation of the grid.

[0047] In summary, it is convenient to control the current connection between the photovoltaic module and the grid-connected bus, ensuring the safe transmission of the current and the flexible control of the test module 1, thereby improving the operability of the entire test device and the safety of the test process.

[0048] Specifically, Figure 2 As shown, the testing device for testing the performance of multiple types of photovoltaic power generation also includes a grid-connected switch 4 located on the grid-connected bus, and each of the test modules 1 is connected to the grid-connected switch 4 at a bus node connected to the grid-connected bus.

[0049] In this embodiment, the test device for testing the performance of multiple types of photovoltaic power generation includes a grid-connected switch 4 located on the grid-connected bus. The technical effect of this design is to provide a centralized control point for managing the process of all test modules 1 being connected to the grid. Each test module 1 aggregates the electric energy of the photovoltaic components through the confluence node, and then connects to the grid-connected switch 4, so that the operator can control the grid-connected state of the entire system through the grid-connected switch 4. When the grid-connected switch 4 is closed, the electric energy of all test modules 1 can flow smoothly to the grid to achieve grid connection; when it is necessary to disconnect the grid or perform system maintenance, the operator can disconnect the grid-connected switch 4 and cut off the connection between the test device and the grid, ensuring the safety of operation and the stability of the system. In addition, this design also allows the grid-connected state of each test module 1 to be individually controlled, providing flexibility and precise management of the flow of electric energy, making the entire photovoltaic power generation performance test process more efficient and controllable.

[0050] To sum up, by setting a grid-connected switch 4 on the grid-connected bus, the connection status of each test module 1 and the grid-connected bus can be conveniently controlled, thereby realizing unified management and coordination of multiple modules, improving the integration of the test device and the overall operating efficiency, and effectively reducing equipment conflicts and resource waste during the test process.

[0051] Specifically, Figure 2 As shown, the DC-DC converter unit 12 at least includes a unit body and a converter, and the converter is detachably connected to the unit body.

[0052] In this embodiment, the DC-DC converter unit 12 can be flexibly disassembled and replaced with a DC-DC converter unit 12 of other brands, specifications and models. The power generation efficiency of the DC-DC converter unit 12 is calculated by the data of the photovoltaic input and output of the same group, and a comparative experiment of the power generation performance of the DC-DC converter unit 12 can be performed; the design of the DC-DC converter unit 12 allows a detachable connection between the converter and the unit body. The technical effect of this modular design is that it provides great flexibility and convenience. The converter is the core component of the DC-DC converter unit 12, which is responsible for converting the direct current generated by the photovoltaic module into the required voltage level for subsequent use or grid connection. The unit body provides the necessary mechanical and electrical support for the converter. Through this design, when maintenance, upgrading or testing of converters of different brands is required, the existing converter can be easily disassembled and a new converter can be installed, so that the test device can adapt to different test needs and scenarios. In addition, this detachable design also facilitates the evaluation and comparison of the power generation efficiency of the inverter. By replacing inverters of different brands and specifications and using the input and output data of the photovoltaic modules, the efficiency of each inverter can be calculated, so as to conduct performance comparison experiments. This design not only improves the accuracy and reliability of the test, but also provides important data support for the design and optimization of the photovoltaic system, which helps to select the most suitable inverter and optimize the performance of the entire photovoltaic power generation system.

[0053] In summary, the detachable connection design of the DC-DC converter unit 12 can make the replacement and maintenance of the converter more convenient, thereby improving the flexibility and adaptability of the test device, better meeting the needs of different types of photovoltaic power generation performance tests, extending the service life of the equipment and reducing maintenance costs.

[0054] Specifically, Figure 3 As shown, a test method for testing the performance of multiple types of photovoltaic power generation uses a test device for testing the performance of multiple types of photovoltaic power generation. The test method includes: S10, obtaining experimental requirement information; In this embodiment, the experimental requirement information refers to the specific requirements put forward by the user or test engineer according to specific test objectives and conditions. For example, it may be necessary to test the power generation efficiency of photovoltaic panels under different lighting conditions, or to evaluate the performance of DC-DC converters of different brands. This information is the basis for experimental design and execution, ensuring that the experiment can be carried out according to the predetermined objectives.

[0055] According to the experimental requirement information, the corresponding experimental modules are matched, and the experimental modules at least include a conversion voltage experimental module, a photovoltaic power generation efficiency experimental module and a DC-DC converter unit 12 performance experimental module; In this embodiment, the experimental module is a set of hardware and software combinations designed for specific test requirements, which can evaluate different aspects of the photovoltaic power generation system. For example, the conversion voltage experimental module can test the ability of the DC-DC converter to convert the voltage output by the photovoltaic panel to a specific voltage level; the photovoltaic power generation efficiency experimental module can evaluate the photoelectric conversion efficiency of the photovoltaic panel under specific conditions; the DC-DC converter unit 12 performance experimental module can evaluate the performance of the converter under different load and input conditions.

[0056] S20, generating hardware detection points according to the experimental module, so as to detect whether the hardware material connected to the hardware detection points is correct; In this embodiment, hardware detection points refer to some detection access points preset in the experimental module, which are used to connect various sensors and measuring devices to collect key data during the experiment. The process of generating hardware detection points includes determining the parameters to be monitored (such as voltage, current, temperature, etc.) and setting detection access points at the corresponding locations. These points are set to ensure that the required hardware performance data can be accurately and comprehensively collected during the experiment.

[0057] S30, if it is detected that the hardware material selection of the hardware detection point is correct, the first power information of the first current detection unit 11 and the second power information of the second current detection unit 13 are obtained, and the first power information and the second power information are sent to the remote terminal module 3; In this embodiment, if the hardware material selection of the hardware detection point is correct, the system will start to collect experimental data. The first current detection unit 11 and the second current detection unit 13 are responsible for monitoring the current of the photovoltaic module input and the converter output respectively. This power information is crucial for evaluating the performance of photovoltaic modules and converters. For example, by measuring the output current of the photovoltaic module under standard test conditions, its power generation efficiency can be calculated; by monitoring the current output of the converter, its voltage conversion efficiency and stability can be evaluated.

[0058] S40, controlling the remote terminal module 3 to analyze the first power information and the second power information, and generating and pushing a corresponding test report.

[0059] In this embodiment, the remote terminal module 3 is a key component in the experimental system, which is responsible for receiving, analyzing and processing the power information transmitted from the experimental module. The remote terminal module 3 may include high-performance computing equipment and professional analysis software, which can analyze the collected data in real time and generate detailed test reports. For example, by analyzing the current and voltage data of the photovoltaic module at different time points, the remote terminal module 3 can generate a power generation efficiency curve of the photovoltaic module to help users understand the performance change trend of the photovoltaic module. These test reports provide users with valuable data support, which helps them make more scientific decisions.

[0060] Preferably, for the DC-DC converter unit 12, which is a DCDC module (converter) with a DC voltage input and an adjustable DC voltage output, 14 groups of photovoltaics with different DC voltage levels can be converted into the required DC voltage according to the experimental requirements. The brand, specification and model of each DC-DC converter unit 12 are consistent to ensure the fairness of the 14 groups of photovoltaic experimental data; the test device for multi-type photovoltaic power generation performance can compare or divide the collected photovoltaic power information with its rated parameters, and can perform a photovoltaic power generation efficiency comparison experiment. The test device for multi-type photovoltaic power generation performance can also achieve the purpose of measuring certain groups of photovoltaic data by disconnecting the input switch 14 and the output switch 16. At the same time, the DC-DC converter unit 12 can be flexibly disassembled and replaced with a DC-DC converter unit 12 of other brands, specifications and models. The power generation efficiency of the DC-DC converter unit 12 is calculated through the data of the same group of photovoltaic input and output, and the power generation performance comparison experiment of the DC-DC converter unit 12 can be performed.

[0061] In summary, by matching different experimental modules, accurate configuration for different test requirements can be achieved, ensuring the reasonable allocation and correct connection of each photovoltaic module and DC-DC conversion unit 12 in the experiment, thereby effectively improving the pertinence and scientific nature of the test, ensuring the validity and consistency of the experimental results, and being able to determine whether the actual output of the photovoltaic module meets the rated parameters by analyzing and comparing the first electrical information and the second electrical information, thereby accurately evaluating the photovoltaic power generation performance and generating a detailed test report, providing data support for further optimizing and improving the performance of photovoltaic modules, and significantly improving the scientific nature of the test and the application value of the data.

[0062] Specifically, Figure 4As shown, in the step of generating hardware detection points according to the experimental module, that is, in the step S20, the hardware detection points at least include conversion voltage detection points, photovoltaic power generation efficiency detection points and DC-DC converter unit 12 performance detection points; The following steps are also included: S201, if the experimental module is a conversion voltage experimental module, generating a conversion voltage detection point, the conversion voltage detection point is used to ensure that the DC voltage levels between the photovoltaic modules are different, and to ensure that the brands and types of the converters required in the DC-DC converter units 12 are the same; In this embodiment, the conversion voltage detection points are generated to ensure that the conversion effect of the DC-DC converter unit 12 on the output voltage of the photovoltaic module can be accurately evaluated when the conversion voltage experimental module is tested. These detection points are designed to monitor whether the DC voltage output by different photovoltaic modules meets expectations after being connected to the same type of converter, thereby verifying the performance and consistency of the converter. For example, if the test device needs to evaluate the voltage output of three different photovoltaic modules after passing through the same converter, the conversion voltage detection points will ensure that the initial voltages of the three modules are different, while the converter remains consistent, so that the impact of the converter on the voltage conversion of different modules can be fairly compared.

[0063] S202. If the experimental module is a photovoltaic power generation efficiency experimental module, a photovoltaic power generation efficiency detection point and a pre-detection point are generated. The photovoltaic power generation efficiency detection point is used to ensure that the brands of the photovoltaic modules are different and that the brands of the converters required in the DC-DC converter units 12 are the same. The pre-detection point is used to ensure that the output voltage of each photovoltaic module is consistent with the output voltage of the DC-DC converter unit 12. In this embodiment, the photovoltaic power generation efficiency detection points and pre-detection points are generated in order to evaluate the efficiency of photovoltaic modules of different brands and types in the photovoltaic power generation efficiency experimental module, and ensure the consistency of their output voltage after passing through the DC-DC converter unit 12 of the same brand and type. The photovoltaic power generation efficiency detection points are used to compare the performance of different photovoltaic modules under standard test conditions, while the pre-detection points ensure that the output voltage of all modules after passing through the converter unit reaches the predetermined standard, so that the power generation efficiency of the photovoltaic modules can be fairly evaluated without being affected by the performance differences of the converter unit. For example, if it is necessary to test photovoltaic modules from two different manufacturers, the photovoltaic power generation efficiency detection points will monitor the initial power generation efficiency of each module, and the pre-detection points will ensure that the output voltage after passing through the converter unit is the same for effective comparison.

[0064] S203. If the experimental module is a DC-DC converter unit 12 performance experimental module, a DC-DC converter unit 12 performance detection point and a switching detection point are generated. The DC-DC converter unit 12 performance detection point is used to ensure that the brand types of various photovoltaic components are the same, and that the brand types of the converters required in various DC-DC converter units 12 are different. The switching detection point is used to ensure that the converters required in various DC-DC converter units 12 reach a preset number and that the logic switching is correct.

[0065] In this embodiment, the generation of the performance detection points and switching detection points of the DC-DC converter unit 12 is to evaluate the performance impact of converters of different brands and types on the same photovoltaic module in the DC-DC converter unit 12 performance experiment module, and to ensure that the switching logic between converters is correct. The performance detection points of the DC-DC converter unit 12 are used to monitor and compare the performance differences of different converters when processing the output of the same photovoltaic module, while the switching detection points are used to verify whether the converter can be switched according to the preset sequence and logic to meet the test requirements. For example, if it is necessary to evaluate the performance impact of four different converters on the same photovoltaic module, the performance detection points of the DC-DC converter unit 12 will monitor the conversion efficiency and stability of each converter, and the switching detection points will ensure that these converters can be correctly connected to the system in sequence for accurate performance comparison.

[0066] In summary, by analyzing and comparing the first power information and the second power information, it is possible to determine whether the actual output of the PV module meets the rated parameters, thereby accurately evaluating the photovoltaic power generation performance and generating a detailed test report, providing data support for further optimizing and improving the performance of the PV module, and significantly improving the scientific nature of the test and the application value of the data.

[0067] Specifically, Figure 5 As shown, the step of controlling the remote terminal module 3 to analyze the first power information and the second power information, and generating and pushing the corresponding test report, that is, the step S40, includes: S401, obtaining type information of the photovoltaic module corresponding to the test module 1; In this embodiment, obtaining the type information of the photovoltaic module corresponding to the test module 1 is a key step, which ensures the accuracy and relevance of the test report. The type information of the photovoltaic module includes the manufacturer, model, material type, etc., which is essential for understanding the performance characteristics of the module. For example, different types of photovoltaic modules may have different photoelectric conversion efficiencies and operating voltage ranges. Therefore, understanding the type information of the module helps the remote terminal module 3 to correctly interpret the power information.

[0068] S402, determining rated parameters according to the type information; In this embodiment, determining the rated parameters according to the type information is a process of matching the type information of the photovoltaic module with the rated parameters in a preset database or document. The rated parameters generally include the maximum output power, open circuit voltage, short circuit current, etc. of the photovoltaic module under standard test conditions. For example, if the tested photovoltaic module is a high-efficiency monocrystalline silicon solar cell, its rated parameters will include the maximum power output at a light intensity of 1000W / m² and an ambient temperature of 25°C.

[0069] S403, comparing the first power information with the rated parameter, and comparing the second power information with the rated parameter, to generate corresponding comparison results; In this embodiment, comparing the first power information with the rated parameters, and comparing the second power information with the rated parameters to generate corresponding comparison results is a process of evaluating the difference between the actual performance and the expected performance of the photovoltaic module. This step involves comparing the real-time monitored power information (such as actual output power, operating voltage, etc.) with the rated parameters of the photovoltaic module to calculate performance indicators such as efficiency, power loss, etc. For example, if the output power of the photovoltaic module in actual operation is lower than the rated power, this may indicate that the module has performance degradation or unsatisfactory working conditions.

[0070] S404: collect statistics on the first power information, the second power information and the comparison result, and generate and push a corresponding test report.

[0071] In this embodiment, statistics of the first power information, the second power information and the comparison result, and generation and push of the corresponding test report are to integrate all relevant data and analysis results into a comprehensive document so that users can quickly understand the performance status of the photovoltaic module. The test report may include real-time performance data of the photovoltaic module, comparative analysis with rated parameters, performance degradation trends, recommended maintenance measures, etc. For example, if the test report shows that the efficiency of the photovoltaic module is lower than expected, the report may recommend cleaning or checking whether the module is damaged. This report will be automatically generated by the remote terminal module 3 and can be pushed to the user via email, application or other communication methods, so that the user can take necessary actions in time.

[0072] In summary, by obtaining the type information of the photovoltaic module and determining its rated parameters, the first power information and the second power information can be effectively compared to generate corresponding comparison results, and these data can be statistically analyzed to generate an accurate test report, thereby providing a reliable basis for the comprehensive evaluation of the performance of the photovoltaic module, optimizing the overall function of the test device, and enhancing the practicality and guidance of the test report.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A testing device for testing the performance of multiple types of photovoltaic power generation, characterized in that: The invention comprises a test module (1), an electric quantity information monitoring module (2) and a remote terminal module (3); the test module (1) is provided with a plurality of modules, and each of the test modules (1) is located between a grid-connected bus and a corresponding photovoltaic module; the test module (1) comprises a first current detection unit (11), a DC-DC converter unit (12) and a second current detection unit (13) connected in sequence; the signal input end of the first current detection unit (11) is used to collect electric quantity information before the photovoltaic module is input into the DC-DC converter unit (12); the signal output end of the first current detection unit (11) is connected to the first signal input end of the electric quantity information monitoring module (2); and the signal output end of the second current detection unit (13) is connected to the first signal input end of the photovoltaic module. The signal input end of the current detection unit (13) is used to collect the power information after the photovoltaic component is input into the DC-DC converter unit (12); the signal output end of the second current detection unit (13) is connected to the second signal input end of the power information monitoring module (2); the remote communication end of the power information monitoring module (2) is connected to the first data communication end of the remote terminal module (3); the second data communication end of the remote terminal module (3) is connected to the remote communication end of the DC-DC converter unit (12), so as to switch different types of converters in the DC-DC converter unit (12) of each test module (1), thereby performing different types of power generation performance comparison experiments.

2. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 1, characterized in that: The first current detection unit (11) comprises at least a first direct current transformer, a first end of the first direct current transformer is connected to a photovoltaic component, and a second end of the direct current transformer is connected to a direct current input end of a DC-DC converter unit (12).

3. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 2, characterized in that: An input switch (14) and a diode (15) connected in series are provided between the first end of the first DC current transformer and the photovoltaic assembly, the first end of the diode (15) is connected to the photovoltaic assembly, the second end of the diode (15) is connected to the first end of the input switch (14), and the second end of the input switch (14) is connected to the first end of the first DC current transformer.

4. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 1, characterized in that: The second current detection unit (13) comprises at least a second DC current transformer, a first end of the second DC current transformer is connected to the DC output end of the DC-DC converter unit (12), and a second end of the second DC current transformer is connected to the grid-connected bus.

5. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 4, characterized in that: An output switch (16) is provided between the second end of the second DC current transformer and the grid-connected bus, a first end of the output switch (16) is connected to the second end of the second DC current transformer, and a second end of the output switch (16) is connected to the grid-connected bus.

6. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 1, characterized in that: The testing device for testing the performance of multiple types of photovoltaic power generation also includes a grid-connected switch (4) located on a grid-connected bus, and each of the test modules (1) is connected to a confluence node of the grid-connected bus and the grid-connected switch (4).

7. A testing device for testing the performance of multiple types of photovoltaic power generation according to claim 1, characterized in that: The DC-DC converter unit (12) comprises at least a unit body and a converter, and the converter is detachably connected to the unit body.

8. A method for testing the performance of multiple types of photovoltaic power generation, using a testing device for testing the performance of multiple types of photovoltaic power generation as claimed in any one of claims 1 to 7, characterized in that: The test method includes: Obtain experimental requirements information; According to the experimental requirement information, matching corresponding experimental modules, the experimental modules at least include a conversion voltage experimental module, a photovoltaic power generation efficiency experimental module and a DC-DC converter unit performance experimental module; Generate hardware detection points according to the experimental module to detect whether the hardware material connected to the hardware detection points is correct; If it is detected that the hardware material selection of the hardware detection point is correct, the first power information of the first current detection unit and the second power information of the second current detection unit are obtained, and the first power information and the second power information are sent to the remote terminal module; The remote terminal module is controlled to analyze the first power information and the second power information, and to generate and push a corresponding test report.

9. A method for testing the performance of multiple types of photovoltaic power generation according to claim 8, characterized in that: In the step of generating hardware detection points according to the experimental module, the hardware detection points at least include conversion voltage detection points, photovoltaic power generation efficiency detection points and DC-DC converter unit performance detection points; The following steps are also included: If the experimental module is a conversion voltage experimental module, a conversion voltage detection point is generated, and the conversion voltage detection point is used to ensure that the DC voltage levels between the various photovoltaic modules are different, and to ensure that the brands and types of the converters required in the various DC-DC converter units are the same; If the experimental module is a photovoltaic power generation efficiency experimental module, a photovoltaic power generation efficiency detection point and a pre-detection point are generated. The photovoltaic power generation efficiency detection point is used to ensure that the brands of the photovoltaic modules are different and that the brands of the converters required in the DC-DC converter units are the same. The pre-detection point is used to ensure that the output voltage of each photovoltaic module remains consistent through the output voltage of the DC-DC converter unit. If the experimental module is a DC-DC converter unit performance experimental module, a DC-DC converter unit performance detection point and a switching detection point are generated. The DC-DC converter unit performance detection point is used to ensure that the brand types of various photovoltaic components are the same, and that the brand types of the converters required in various DC-DC converter units are different. The switching detection point is used to ensure that the converters required in each DC-DC converter unit reach a preset number and that the logic switching is correct.

10. A method for testing the performance of multiple types of photovoltaic power generation according to claim 8, characterized in that: The step of controlling the remote terminal module to analyze the first power information and the second power information, and generating and pushing a corresponding test report includes: Obtain the type information of the photovoltaic module corresponding to the test module; Determining rated parameters according to the type information; comparing the first power information with the rated parameter, and comparing the second power information with the rated parameter, to generate corresponding comparison results; The first power information, the second power information and the comparison result are counted, and a corresponding test report is generated and pushed.

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