Method for calculating sunshine duration of photovoltaic array with different dip angles and related device

Abstract

The invention discloses a sunshine duration calculation method for photovoltaic arrays with different inclination angles and a related device, and the method comprises the steps: obtaining the position of a to-be-measured project site, extracting sunshine parameters of the to-be-measured project site, and carrying out the processing of the sunshine parameters; according to the processed sunlight parameters and environmental factors of the project site to be measured, determining an actual laying inclination angle of a photovoltaic panel, and calculating the sunlight hours at the actual angle; and obtaining the sunshine duration of the photovoltaic array at different inclination angles based on the sunshine hours at the actual angle. The method not only improves the accuracy, but also enhances the universality, and is suitable for photovoltaic projects of different geographic positions and climate conditions. The limitation problems that photovoltaic resource software cannot calculate different inclination angles, the universality is insufficient, the calculation process is complex and the like when the sunlight duration of photovoltaic arrays with different inclination angles is calculated in the prior art are effectively solved, and the actual application requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic power stations and relates to a method for calculating sunshine duration of photovoltaic arrays with different inclination angles and a related device. Background Art

[0002] With the continuous growth of global energy demand and the increasing emphasis on environmental protection and sustainable development, solar energy as a clean and renewable energy source has received more and more attention. Photovoltaic power generation is one of the important ways to utilize solar energy, and the performance and efficiency of photovoltaic arrays directly affect the overall output of photovoltaic power generation systems. Different inclinations will affect the amount of solar radiation received by the photovoltaic array, which in turn affects its power generation efficiency and sunshine duration. In order to optimize the design and operation of photovoltaic power generation systems, it is crucial to accurately calculate the sunshine duration of photovoltaic arrays with different inclinations. This helps to determine the optimal installation inclination, evaluate power generation potential, and predict and optimize system performance.

[0003] However, in actual photovoltaic power generation projects, photovoltaic arrays often need to be installed at a variety of inclination angles due to the constraints of various factors such as terrain and installation conditions. In the current market, although light resource software such as NASA, Solargis, and Meteonorm can provide light resource data at horizontal and optimal inclination angles based on coordinate positions, photovoltaic arrays with non-standard inclination angles still require the use of professional software for simulation and analysis. This process not only requires the operator to have certain professional knowledge and skills, but also involves complex calculation processes, which places strict requirements on the accuracy and completeness of the data. In addition, the high cost of professional software further increases the difficulty of implementation. Therefore, in the design and optimization process of photovoltaic power generation systems, how to efficiently and accurately calculate the sunshine duration of photovoltaic arrays at different inclination angles has become a key issue that needs to be solved urgently.

[0004] The existing technologies mainly include software simulation methods and actual measurement methods. Software simulation method: At present, the light resource software can obtain the horizontal and optimal inclination light resources according to the coordinate position, but for photovoltaic arrays with different inclinations, professional software simulation is required. At present, there are many photovoltaic design software that can simulate the sunshine conditions of photovoltaic arrays with different inclinations and calculate the sunshine duration. These software are usually based on complex mathematical models and meteorological data, but require certain professional knowledge and operating skills, and the software cost is relatively high. At the same time, combined with the auxiliary calculation of the geographic information system (GIS), the influence of factors such as terrain and landform on sunshine is considered, but the calculation process is relatively complicated and requires high accuracy and completeness of the data. Actual measurement method: Through on-site measurement equipment, solar radiation measurement equipment and sunshine time recorders are installed at the actual photovoltaic project site, and the sunshine duration of photovoltaic arrays with different inclinations can be directly measured. This method is more accurate, but it requires a certain amount of equipment cost and maintenance cost, and the measurement results are affected by equipment accuracy and environmental factors.

[0005] In summary, the existing technology has certain limitations in calculating the sunshine duration of photovoltaic arrays with different inclination angles. Some calculation methods are developed for specific regions or specific types of photovoltaic arrays, and are difficult to apply to different geographical locations, climatic conditions and array types. Different photovoltaic technologies (such as crystalline silicon, thin film, etc.) and installation methods (rooftop installation, ground installation, etc.) may require different calculation methods, but the existing technology often lacks versatility. Although some calculation methods based on complex mathematical models and numerical simulations have high accuracy, the calculation process is cumbersome, requiring a lot of computing resources and time, which is not convenient for rapid calculation and optimization design in practical applications. Commonly used light resource software on the market, such as NASA, Solargis and Meteonorm, all have the limitation of being unable to obtain the sunshine duration under any photovoltaic array inclination angle. Therefore, a more accurate, universal and convenient calculation method is needed to meet the needs of practical applications. Summary of the invention

[0006] The purpose of the present invention is to provide a method and related device for calculating sunshine duration of photovoltaic arrays with different inclination angles, so as to solve the problem that the existing calculation method is complicated and lacks versatility.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A method for calculating sunshine duration of photovoltaic arrays with different inclination angles, comprising: Obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; According to the processed sunshine parameters and environmental factors of the project site to be tested, the actual laying angle of the photovoltaic panels is determined, and the number of sunshine hours at the actual angle is calculated; Based on the sunshine hours at the actual angle, the sunshine duration of photovoltaic arrays with different inclination angles is obtained.

[0008] Furthermore, the sunshine parameters of the project site to be tested include sunshine hours on the horizontal plane, the best angle, sunshine hours at the best inclination angle, and sunshine hours of the photovoltaic panels at the best angle.

[0009] Furthermore, the platform for extracting sunshine parameters of the project site to be tested includes Solargis and Meteonorm light resource software.

[0010] Furthermore, the sunshine parameter processing of the project site to be tested is to calculate the weighted average of the sunshine hours on the horizontal plane and the sunshine hours on the photovoltaic panels at the best angle according to the sunshine hours on the horizontal plane, the sunshine hours at the best inclination angle and the sunshine hours on the photovoltaic panels at the best angle:

[0011]

[0012] in, It represents the weighted average of horizontal sunshine hours. Represents the weighted average of the number of sunshine hours for the photovoltaic panels at the optimal angle, It represents the number of horizontal sunshine hours extracted by Meteonorm light resource software. Indicates the number of horizontal sunshine hours extracted by Solargis light resource software. It represents the number of sunshine hours for photovoltaic panels at the best angle extracted by Meteonorm light resource software. It represents the number of sunshine hours at the optimal inclination angle extracted by Solargis light resource software. , They respectively represent the power generation data correction coefficients.

[0013] Furthermore, the environmental factors include the geographical environment, climate conditions and solar radiation intensity of the project site to be tested.

[0014] Furthermore, the number of sunshine hours under the actual angle is

[0015] in, Indicates the actual laying inclination angle of the photovoltaic panel. Indicates the optimal tilt angle of the photovoltaic panel, Indicates the horizontal sunshine duration, Indicates the optimal inclination angle and sunshine duration of photovoltaic panels.

[0016] Furthermore, the sunshine duration of the photovoltaic arrays in different directions is

[0017] in, represents the empirical coefficient, Indicates the number of hours of sunshine in actual angle.

[0018] A sunshine duration calculation system for photovoltaic arrays with different inclination angles, comprising: An extraction module, the extraction module is used to obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; A calculation module, which is used to determine the actual photovoltaic panel inclination angle and calculate the number of sunshine hours at the actual angle according to the processed sunshine parameters and environmental factors of the project site to be tested; The obtaining module is used to obtain the sunshine duration of photovoltaic arrays with different inclination angles based on the sunshine hours at the actual angle.

[0019] A terminal device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the steps of the method are implemented when the processor executes the computer program.

[0020] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method are implemented.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method and a related device for calculating the sunshine duration of photovoltaic arrays with different inclination angles. By obtaining the location of the project site to be tested, extracting sunshine parameters, and determining the actual laying inclination angle of the photovoltaic panel in combination with environmental factors, the sunshine hours under the actual angle can be accurately calculated, and then the sunshine duration of photovoltaic arrays with different inclination angles can be obtained. This calculation method not only improves accuracy, but also enhances versatility, and is suitable for photovoltaic projects in different geographical locations and climatic conditions. It effectively solves the limitations of the prior art in calculating the sunshine duration of photovoltaic arrays with different inclination angles, such as the inability of photovoltaic resource software to calculate different inclination angles, insufficient versatility, and complex calculation process, and meets the needs of practical applications. The present invention can accurately and quickly calculate the number of sunshine hours that photovoltaic panels can receive at different installation inclination angles. By simplifying the calculation process, it not only provides investors with key data support and helps investors make more sensible investment decisions, but also makes the planning and layout of photovoltaic projects more scientific and reasonable, which helps to maximize the use of solar energy resources. Through accurate sunshine duration calculation, investors can predict the energy output of the project and evaluate the long-term economic benefits, thereby occupying a favorable position in the fiercely competitive market and improving the competitiveness and profitability of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The figure is a flow chart of the method for calculating sunshine hours of photovoltaic arrays with different tilt angles according to the present invention.

[0024] Figure 2 This is a diagram showing the relationship between the photovoltaic panel of the present invention and solar radiation.

[0025] Figure 3 The figure is a schematic diagram of the structure of a sunshine duration calculation system for photovoltaic arrays with different inclination angles according to a preferred embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of an electronic device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0030] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0031] It should be noted that the terminals involved in the embodiments of the present application may include but are not limited to mobile phones, personal digital assistants (PDAs), wireless handheld devices, tablet computers, personal computers (PCs), MP3 players, MP4 players, wearable devices (for example, smart glasses, smart watches, smart bracelets, etc.), smart home devices and other smart devices.

[0032] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1 The present invention provides a method for calculating the sunshine duration of photovoltaic arrays with different inclination angles, so as to realize the rapid and accurate calculation of the sunshine duration of photovoltaic arrays at various inclination angles, thereby solving the problem that existing light resource software such as Solargis and Meteonorm cannot perform such calculations. Specifically, the method comprises the following steps: Step 1: Get the location of the project to be tested, including the longitude coordinate point X and the latitude coordinate point Y.

[0034] Step 2: Extract the horizontal sunshine hours in Solargis light resource software based on the X and Y coordinates of the project site to be tested , Best Angle and sunshine hours at the optimal inclination .

[0035] Step 3: Based on the obtained X, Y coordinate points and optimal angle of the project to be tested Extracting horizontal sunshine hours in Meteonorm light resource software And the number of hours of sunshine for photovoltaic panels at the optimal angle .

[0036] Step 4: Based on the weighted average, the horizontal sunshine hours obtained above and the sunshine hours of the photovoltaic panels at the best angle are weighted and calculated to obtain , :

[0037]

[0038] in, , It indicates the correction coefficient based on the power generation data in a large number of actual projects, so as to obtain more accurate and reliable power generation values. Take 0.6, Take 0.4.

[0039] Step 5: According to the actual situation of the project site, comprehensively consider the local geographical environment, climate conditions, solar radiation intensity and other environmental factors, determine the laying and installation method of photovoltaic panels, and obtain the actual laying inclination angle of photovoltaic panels .

[0040] Step 6: Lay the photovoltaic panels according to their actual inclination angle , calculate the sunshine hours at the actual angle based on the following function, see Figure 2 :

[0041]

[0042]

[0043] in, represents the solar altitude angle, Indicates the actual laying inclination angle of the photovoltaic panel. Indicates the optimal tilt angle of the photovoltaic panel, Indicates the horizontal sunshine duration. Indicates the optimal inclination angle and sunshine duration of photovoltaic panels.

[0044] Considering that the photovoltaic panel faces due south at the annual optimal tilt angle, the average daily solar radiation in summer is less affected by the azimuth angle γ, and the present invention ignores its influence. The above function is for the relationship between the number of hours of illumination at any time, different photovoltaic tilt angles and the optimal tilt angle when the photovoltaic panel is tilted due south.

[0045] For known PV installation locations, , is a constant, the solar azimuth The actual laying inclination of photovoltaic panels changes over time. It is determined according to the design. , and generally <50°, so the function can be approximately equivalent to and A linear function of .

[0046] Therefore, when =0, = when = hour, = .

[0047] Arranging and simplifying gives the function:

[0048] Therefore, substituting the function described in step 4, we can deduce:

[0049] Step 7: Based on the actual sunshine hours, calculate the sunshine duration of photovoltaic arrays in different orientations:

[0050] in, It represents the empirical coefficient, which is related to the building structure, PV installation method, PV inclination and installation direction. The value is obtained based on professional software simulation, previous actual engineering power generation, etc.

[0051] Another object of the present invention is to provide a sunshine duration calculation system for photovoltaic arrays with different inclination angles according to the present invention, such as Figure 3 As shown, an embodiment of the system includes: an extraction module, a calculation module and an acquisition module.

[0052] An extraction module, the extraction module is used to obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; A calculation module, which is used to determine the actual photovoltaic panel inclination angle and calculate the number of sunshine hours at the actual angle according to the processed sunshine parameters and environmental factors of the project site to be tested; The obtaining module is used to obtain the sunshine duration of photovoltaic arrays with different inclination angles based on the sunshine hours at the actual angle.

[0053] It can be understood that the sunshine duration calculation system for photovoltaic arrays with different inclination angles provided by the present invention corresponds to the sunshine duration calculation method for photovoltaic arrays with different inclination angles provided by the aforementioned embodiments. The relevant technical features of the sunshine duration calculation system for photovoltaic arrays with different inclination angles can refer to the relevant technical features of the sunshine duration calculation method for photovoltaic arrays with different inclination angles, which will not be repeated here.

[0054] The third object of the present invention is to provide an electronic device, such as Figure 4 As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the steps of the sunshine duration calculation method for photovoltaic arrays with different inclination angles.

[0055] The method for calculating the sunshine duration of photovoltaic arrays with different inclination angles comprises the following steps: Obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; According to the processed sunshine parameters and environmental factors of the project site to be tested, the actual laying angle of the photovoltaic panels is determined, and the number of sunshine hours at the actual angle is calculated; Based on the sunshine hours at the actual angle, the sunshine duration of photovoltaic arrays with different inclination angles is obtained.

[0056] A fourth object of the present invention is to provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for calculating the sunshine duration of photovoltaic arrays with different inclination angles are implemented.

[0057] The method for calculating the sunshine duration of photovoltaic arrays with different inclination angles comprises the following steps: Obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; According to the processed sunshine parameters and environmental factors of the project site to be tested, the actual laying angle of the photovoltaic panels is determined, and the number of sunshine hours at the actual angle is calculated; Based on the sunshine hours at the actual angle, the sunshine duration of photovoltaic arrays with different inclination angles is obtained.

[0058] It should be understood by those skilled in the art that the embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0059] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0060] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0061] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for calculating sunshine duration of photovoltaic arrays with different inclination angles, characterized in that: include: Obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; According to the processed sunshine parameters and environmental factors of the project site to be tested, the actual laying angle of the photovoltaic panels is determined, and the number of sunshine hours at the actual angle is calculated; Based on the actual sunshine hours at the angle, the sunshine duration of photovoltaic arrays with different inclination angles is obtained.

2. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1 is characterized in that: The sunshine parameters of the project site to be tested include sunshine hours on the horizontal plane, the best angle, sunshine hours at the best inclination angle, and sunshine hours of the photovoltaic panels at the best angle.

3. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1 is characterized in that: The platform for extracting sunshine parameters of the project site to be tested includes Solargis and Meteonorm light resource software.

4. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1, characterized in that: The sunshine parameter processing of the project site to be tested is to calculate the weighted average of the sunshine hours on the horizontal plane and the sunshine hours on the photovoltaic panels at the best angle according to the sunshine hours on the horizontal plane, the sunshine hours at the best inclination angle and the sunshine hours on the photovoltaic panels at the best angle: in, represents the weighted average of horizontal sunshine hours, Represents the weighted average of the number of sunshine hours for the photovoltaic panels at the optimal angle, It represents the number of horizontal sunshine hours extracted by Meteonorm light resource software. Indicates the number of horizontal sunshine hours extracted by Solargis light resource software. It represents the number of sunshine hours for photovoltaic panels at the best angle extracted by Meteonorm light resource software. It represents the number of sunshine hours at the optimal inclination angle extracted by Solargis light resource software. , They respectively represent the power generation data correction coefficients.

5. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1, characterized in that: The environmental factors include the geographical environment, climate conditions and solar radiation intensity of the project site to be tested.

6. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1, characterized in that: The number of sunshine hours at the actual angle is in, Indicates the actual laying inclination angle of the photovoltaic panel. Indicates the optimal tilt angle of the photovoltaic panel, Indicates the horizontal sunshine duration, Indicates the optimal inclination angle and sunshine duration of photovoltaic panels.

7. The method for calculating sunshine duration of photovoltaic arrays with different inclination angles according to claim 1, characterized in that: The sunshine duration of the photovoltaic arrays in different directions is in, represents the empirical coefficient, Indicates the number of hours of sunshine in actual angle.

8. A sunshine duration calculation system for photovoltaic arrays with different inclination angles, characterized in that: include: An extraction module, the extraction module is used to obtain the location of the project site to be tested, extract the sunshine parameters of the project site to be tested and process them; A calculation module, which is used to determine the actual photovoltaic panel inclination angle and calculate the number of sunshine hours at the actual angle according to the processed sunshine parameters and environmental factors of the project site to be tested; The obtaining module is used to obtain the sunshine duration of photovoltaic arrays with different inclination angles based on the sunshine hours at the actual angle.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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