Distributed photovoltaic inverter adjusting device and adjusting method

Abstract

The invention discloses a distributed photovoltaic inverter adjusting device and an adjusting method, which are applied to the technical field of photovoltaic power generation, and are characterized in that the output power of a distributed photovoltaic inverter is monitored and adjusted in real time, so that the distributed photovoltaic inverter is always kept in an optimal state, the stability of the output power is improved, and the service life of the distributed photovoltaic inverter is prolonged. And the distributed photovoltaic inverter can better adapt to the change of the power grid, the impact on the power grid is reduced, the stability and reliability of the system are improved, and meanwhile, the distributed photovoltaic inverter can keep relatively high efficiency under different illumination intensities and load conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and in particular relates to a distributed photovoltaic inverter regulating device and a regulating method. Background Art

[0002] With the growing global demand for clean energy, distributed photovoltaic power generation systems have been widely developed and applied due to their unique advantages. Distributed photovoltaic power generation systems can be installed on building roofs, open spaces, agricultural greenhouses and other places. Distributed photovoltaic inverters are one of the core devices in distributed photovoltaic power generation systems. Their main function is to convert the direct current generated by solar panels into alternating current and transmit the electrical energy to the power grid or local loads. The performance of photovoltaic inverters directly affects the efficiency, stability and reliability of the entire photovoltaic power generation system.

[0003] Although distributed photovoltaic inverters play a vital role in photovoltaic power generation systems, there are still some problems with the current distributed photovoltaic inverters in practical applications. Due to the intermittent and uncertain nature of solar energy resources and changes in environmental factors (such as light intensity, temperature, etc.), the output power of distributed photovoltaic inverters will fluctuate, affecting the stability and reliability of the system; in addition, distributed photovoltaic power generation systems are usually connected to low-voltage distribution networks, and the voltage, frequency, phase and other parameters of the power grid will change with the load. When facing changes in grid parameters, existing photovoltaic inverters may not be able to adjust the output in time, resulting in poor adaptability to the grid, and may even cause adverse effects on the grid.

[0004] Combining the above-mentioned problems, it is found that it is difficult to avoid the above-mentioned problems at the same time when the existing distributed photovoltaic inverters on the market are in use, so that the desired effect cannot be achieved. Therefore, we propose a distributed photovoltaic inverter adjustment device and adjustment method, which can effectively improve the output power stability of the inverter, reduce power fluctuations, and improve the power generation efficiency of the system through precise power regulation during use. Summary of the invention

[0005] The purpose of the present invention is to propose a distributed photovoltaic inverter adjustment device and adjustment method, which has the advantage of real-time monitoring and adjustment of the output power of the distributed photovoltaic inverter so that it is always kept in the optimal state, thereby improving the stability of the output power, and enabling the distributed photovoltaic inverter to better adapt to changes in the power grid, reduce the impact on the power grid, improve the stability and reliability of the system, and at the same time enable the distributed photovoltaic inverter to maintain a high efficiency under different light intensity and load conditions.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a distributed photovoltaic inverter adjustment device, comprising a mounting bracket and a mounting frame, a ferrule is welded on the rear side of the mounting frame, and the ferrule is sleeved on the surface of the mounting bracket, an inverter body and an adjustment device body are bolted on both sides of the interior of the mounting frame, and the adjustment device body is used in conjunction with the inverter body;

[0007] The main body of the regulating device includes a control module, the input end of the control module is bidirectionally electrically connected to a communication and monitoring module, and the output end of the control module is bidirectionally electrically connected to a sensor module, the output end of the control module is bidirectionally electrically connected to a data analysis and processing module, and the output end of the control module is unidirectionally electrically connected to a power regulating module.

[0008] The present invention is further configured as follows: the sensor module includes a controller, a voltage sensor, a current sensor, a light sensor and a temperature sensor, and the output end of the controller is bidirectionally electrically connected to the voltage sensor, the current sensor, the light sensor and the temperature sensor respectively.

[0009] The present invention is further configured as follows: the data analysis and processing module includes a microprocessor, the output end of the microprocessor is unidirectionally electrically connected to a data processing unit, and the output end of the data processing unit is unidirectionally electrically connected to a data storage unit, the output end of the data storage unit is unidirectionally electrically connected to a data analysis unit, the output end of the data analysis unit is bidirectionally electrically connected to an algorithm storage unit, and the output end of the data analysis unit is unidirectionally electrically connected to the microprocessor.

[0010] The present invention is further configured as follows: the voltage sensor, current sensor, light sensor and temperature sensor are respectively used to measure data parameters such as input and output voltage, current, light intensity and temperature of the distributed photovoltaic inverter.

[0011] The present invention is further configured as follows: the main body of the regulating device also includes a power grid monitoring module and a power grid synchronization module, the input end of the power grid monitoring module is bidirectionally electrically connected to the control module, the output end of the power grid monitoring module is unidirectionally electrically connected to the power grid synchronization module, and the output end of the power grid synchronization module is unidirectionally electrically connected to the power regulating module.

[0012] The present invention is further configured as follows: the power grid monitoring module is used to monitor the voltage, frequency, phase and other parameters of the power grid in real time; the power grid synchronization module synchronously adjusts the output of the inverter body according to the data of the power grid monitoring module.

[0013] The present invention is further configured as follows: for data analysis algorithms, regression analysis, cluster analysis, and time series analysis algorithms are used to deeply mine the data and extract useful information and features.

[0014] A method for regulating a distributed photovoltaic inverter regulating device comprises the following steps:

[0015] S1. Data acquisition: The sensor module and the grid monitoring module respectively collect the input and output parameters of the inverter body, environmental parameters and grid data in real time, and transmit the real-time data to the data analysis and processing module through the control module;

[0016] S2. Data processing and analysis: The input parameters are processed by the data processing and analysis module, and the optimal output power of the inverter body is calculated according to the corresponding algorithm, and the result is output to the control module;

[0017] S3. Power regulation: The power regulation module adjusts the output power of the inverter body according to the instructions of the control module to keep it in the optimal state at all times.

[0018] The present invention is further configured as follows: the input parameters in step S2 include input voltage, input current, output voltage, output current, light intensity, temperature, etc.

[0019] The present invention is further configured as follows: in step S2, the collected data is preliminarily checked and filtered to remove noise and abnormal data to ensure the accuracy and reliability of the data.

[0020] In summary, the present invention has the following beneficial effects:

[0021] By real-time monitoring and adjusting the output power of distributed photovoltaic inverters, they are always kept in the optimal state, thereby improving the stability of the output power, and enabling distributed photovoltaic inverters to better adapt to changes in the power grid, reducing the impact on the power grid, and improving the stability and reliability of the system. At the same time, distributed photovoltaic inverters can maintain high efficiency under different light intensities and load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the main flow of the regulating device of the present invention;

[0024] Figure 3 It is a schematic diagram of the sensor module flow of the present invention;

[0025] Figure 4 It is a schematic diagram of the data analysis and processing module flow of the present invention;

[0026] Figure 5 It is a schematic flow chart of the regulation method of the distributed photovoltaic inverter regulation device of the present invention.

[0027] Figure numerals: 1. mounting bracket; 2. mounting frame; 3. sleeve; 4. inverter body; 5. regulating device body; 51. control module; 52. communication and monitoring module; 53. sensor module; 531. controller; 532. voltage sensor; 533. current sensor; 534. light sensor; 535. temperature sensor; 54. data analysis and processing module; 541. microprocessor; 542. data processing unit; 543. data storage unit; 544. data analysis unit; 545. algorithm storage unit; 55. power regulation module; 56. power grid monitoring module; 57. power grid synchronization module. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] refer to Figure 1-4 A distributed photovoltaic inverter regulating device comprises a mounting bracket 1 and a mounting frame 2, a clamping sleeve 3 is welded on the rear side of the mounting frame 2, and the clamping sleeve 3 is sleeved on the surface of the mounting bracket 1, and an inverter body 4 and a regulating device body 5 are bolted on both sides of the interior of the mounting frame 2, and the regulating device body 5 is used in conjunction with the inverter body 4;

[0031] The regulating device body 5 includes a control module 51, the input end of the control module 51 is bidirectionally electrically connected to a communication and monitoring module 52, and the output end of the control module 51 is bidirectionally electrically connected to a sensor module 53, the output end of the control module 51 is bidirectionally electrically connected to a data analysis and processing module 54, and the output end of the control module 51 is unidirectionally electrically connected to a power regulating module 55.

[0032] like Figure 3 As shown, the sensor module 53 includes a controller 531, a voltage sensor 532, a current sensor 533, a light sensor 534 and a temperature sensor 535, and the output end of the controller 531 is bidirectionally electrically connected to the voltage sensor 532, the current sensor 533, the light sensor 534 and the temperature sensor 535 respectively.

[0033] like Figure 4 As shown, the data analysis and processing module 54 includes a microprocessor 541, the output end of the microprocessor 541 is unidirectionally electrically connected to the data processing unit 542, and the output end of the data processing unit 542 is unidirectionally electrically connected to the data storage unit 543, the output end of the data storage unit 543 is unidirectionally electrically connected to the data analysis unit 544, the output end of the data analysis unit 544 is bidirectionally electrically connected to the algorithm storage unit 545, and the output end of the data analysis unit 544 is unidirectionally electrically connected to the microprocessor 541.

[0034] like Figure 3 As shown, the voltage sensor 532, the current sensor 533, the light sensor 534 and the temperature sensor 535 are respectively used to measure data parameters such as input and output voltage, current, light intensity and temperature of the distributed photovoltaic inverter.

[0035] like Figure 2 As shown, the regulating device body 5 also includes a power grid monitoring module 56 and a power grid synchronization module 57. The input end of the power grid monitoring module 56 is bidirectionally electrically connected to the control module 51, the output end of the power grid monitoring module 56 is unidirectionally electrically connected to the power grid synchronization module 57, and the output end of the power grid synchronization module 57 is unidirectionally electrically connected to the power regulating module 55.

[0036] like Figure 2 As shown, the grid monitoring module 56 is used to monitor the voltage, frequency, phase and other parameters of the grid in real time, and the grid synchronization module 57 synchronously adjusts the output of the inverter body 4 according to the data of the grid monitoring module 56.

[0037] like Figure 4 As shown, for data analysis algorithms, regression analysis, cluster analysis, and time series analysis algorithms are used to deeply mine the data and extract useful information and features.

[0038] Brief description of the use process: The voltage sensor 532, the current sensor 533, the light sensor 534 and the temperature sensor 535 respectively measure the input and output voltage, current, light intensity and temperature of the inverter body 4 in real time, and the grid monitoring module 56 monitors the voltage, frequency and phase of the grid in real time. Then the grid synchronization module 57 adjusts the output of the inverter body 4 synchronously according to the data of the grid monitoring module 56, and the data parameters collected by the sensor module 53 are transmitted to the data analysis and processing module 54 through the control module 51, and the microprocessor 541 receives the data and passes through The data processing unit 542 performs preliminary verification and filtering on the collected data to remove noise and abnormal data to ensure the accuracy and reliability of the data, and then transmits the data parameters to the data storage unit 543 for storage. The data analysis unit 544 retrieves the corresponding data parameters and algorithms from the algorithm storage unit 545 and the data storage unit 543 respectively, and calculates the optimal output power of the inverter body 4 according to the corresponding algorithm, and outputs the result to the control module 51. Finally, the power regulation module 55 adjusts the output power of the inverter body 4 according to the instructions of the control module 51 to keep it in the optimal state at all times.

[0039] Embodiment 2:

[0040] like Figure 5 As shown, a method for regulating a distributed photovoltaic inverter regulating device comprises the following steps:

[0041] S1. Data acquisition: The sensor module 53 and the grid monitoring module 56 respectively collect the input and output parameters and environmental parameters of the inverter body 4 and the grid data in real time, and transmit the real-time data to the data analysis and processing module 54 through the control module 51;

[0042] S2. Data processing and analysis: The input parameters are processed by the data processing and analysis module, and the optimal output power of the inverter body 4 is calculated according to the corresponding algorithm, and the result is output to the control module 51;

[0043] S3. Power regulation: The power regulation module 55 regulates the output power of the inverter body 4 according to the instruction of the control module 51 so as to keep it in the optimal state at all times.

[0044] The input parameters in step S2 include input voltage, input current, output voltage, output current, light intensity, temperature, etc.

[0045] In step S2, the collected data is preliminarily checked and filtered to remove noise and abnormal data to ensure the accuracy and reliability of the data.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A distributed photovoltaic inverter adjustment device, comprising a mounting bracket (1) and a mounting frame (2), characterized in that: A clamping sleeve (3) is welded on the rear side of the installation frame (2), and the clamping sleeve (3) is sleeved on the surface of the installation bracket (1); an inverter body (4) and an adjustment device body (5) are bolted to the two sides of the interior of the installation frame (2), respectively; the adjustment device body (5) is used in conjunction with the inverter body (4); The regulating device body (5) comprises a control module (51), the input end of the control module (51) is bidirectionally electrically connected to a communication and monitoring module (52), the output end of the control module (51) is bidirectionally electrically connected to a sensor module (53), the output end of the control module (51) is bidirectionally electrically connected to a data analysis and processing module (54), and the output end of the control module (51) is unidirectionally electrically connected to a power regulating module (55).

2. A distributed photovoltaic inverter adjustment device according to claim 1, characterized in that: The sensor module (53) comprises a controller (531), a voltage sensor (532), a current sensor (533), a light sensor (534) and a temperature sensor (535); an output end of the controller (531) is respectively and bidirectionally electrically connected to the voltage sensor (532), the current sensor (533), the light sensor (534) and the temperature sensor (535).

3. A distributed photovoltaic inverter adjustment device according to claim 1, characterized in that: The data analysis and processing module (54) comprises a microprocessor (541); the output end of the microprocessor (541) is unidirectionally electrically connected to a data processing unit (542); the output end of the data processing unit (542) is unidirectionally electrically connected to a data storage unit (543); the output end of the data storage unit (543) is unidirectionally electrically connected to a data analysis unit (544); the output end of the data analysis unit (544) is bidirectionally electrically connected to an algorithm storage unit (545); and the output end of the data analysis unit (544) is unidirectionally electrically connected to the microprocessor (541).

4. A distributed photovoltaic inverter adjustment device according to claim 2, characterized in that: The voltage sensor (532), current sensor (533), light sensor (534) and temperature sensor (535) are respectively used to measure data parameters such as input and output voltage, current, light intensity and temperature of the distributed photovoltaic inverter.

5. A distributed photovoltaic inverter adjustment device according to claim 1, characterized in that: The regulating device body (5) also includes a power grid monitoring module (56) and a power grid synchronization module (57), wherein the input end of the power grid monitoring module (56) is bidirectionally electrically connected to the control module (51), the output end of the power grid monitoring module (56) is unidirectionally electrically connected to the power grid synchronization module (57), and the output end of the power grid synchronization module (57) is unidirectionally electrically connected to the power regulating module (55).

6. A distributed photovoltaic inverter adjustment device according to claim 5, characterized in that: The power grid monitoring module (56) is used to monitor parameters such as voltage, frequency and phase of the power grid in real time, and the power grid synchronization module (57) synchronously adjusts the output of the inverter body (4) according to data from the power grid monitoring module (56).

7. A distributed photovoltaic inverter adjustment device according to claim 3, characterized in that: For data analysis algorithms, regression analysis, cluster analysis, and time series analysis algorithms are used to conduct in-depth data mining and extract useful information and features.

8. A method for regulating a distributed photovoltaic inverter regulating device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Data acquisition: The sensor module (53) and the grid monitoring module (56) respectively collect the input and output parameters and environmental parameters of the inverter body (4) and the grid data in real time, and transmit the real-time data to the data analysis and processing module (54) through the control module (51); S2. Data processing and analysis: The input parameters are processed by the data processing and analysis module, and the optimal output power of the inverter body (4) is calculated according to the corresponding algorithm, and the result is output to the control module (51); S3. Power regulation: The power regulation module (55) regulates the output power of the inverter body (4) according to the instruction of the control module (51) so as to keep it in the optimal state at all times.

9. The method for regulating a distributed photovoltaic inverter regulating device according to claim 8, characterized in that: The input parameters in step S2 include input voltage, input current, output voltage, output current, light intensity, temperature, etc.

10. The regulating method of a distributed photovoltaic inverter regulating device according to claim 8, characterized in that: In step S2, the collected data is preliminarily checked and filtered to remove noise and abnormal data to ensure the accuracy and reliability of the data.

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