Photovoltaic array wind load calculation method and device and electronic equipment

Abstract

The invention provides a photovoltaic array wind load calculation method and device and electronic equipment, and relates to the technical field of photovoltaic power generation, and the photovoltaic array wind load calculation method comprises the steps: obtaining first coefficients of a single photovoltaic panel at different inclination angles; acquiring second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles; for the same inclination angle, calculating the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining a target correction factor of the photovoltaic panel at the target position according to the ratio; and acquiring the environment information and the attribute information of the photovoltaic panel, and determining the wind load of the photovoltaic panel according to the environment information, the attribute information of the photovoltaic panel and the target correction factor, thereby solving the technical problem of low wind load calculation precision in the prior art.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to a method, device and electronic equipment for calculating wind load on a photovoltaic array. Background Art

[0002] Solar energy is the cleanest and most renewable energy on earth. After supporting photovoltaic power generation, the cumulative installed capacity of photovoltaic power generation continues to increase. There are also a large number of photovoltaic power station projects that have been used or are under construction in various places.

[0003] Considering that the southern coastal areas are prone to typhoons, the value of the extreme wind load correlation coefficient has a direct impact on the design of the brackets and pipe piles of photovoltaic power station projects; the current photovoltaic bracket wind load is mainly calculated based on the body coefficient method, the value is conservative, and the mechanical strength design reserves a large margin, which easily leads to waste of resources. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the first purpose of this application is to propose a method for calculating wind loads on photovoltaic arrays to achieve cost reduction and efficiency improvement in the photovoltaic industry.

[0006] The second objective of the present application is to provide a photovoltaic array wind load calculation device.

[0007] The third objective of the present application is to provide an electronic device.

[0008] A fourth objective of the present application is to provide a computer-readable storage medium.

[0009] A fifth object of the present application is to provide a computer program product.

[0010] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a method for calculating the wind load of a photovoltaic array, comprising:

[0011] Acquire a first coefficient of a single photovoltaic panel at different inclination angles, wherein the first coefficient includes a first lift coefficient and a first drag coefficient;

[0012] Acquire second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles, wherein the second coefficients include a second lift coefficient and a second drag coefficient;

[0013] For the same inclination angle, calculating the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining the target correction factor of the photovoltaic panel at the target position according to the ratio, wherein the target correction factor includes a lift correction factor and a drag correction factor;

[0014] Environmental information and photovoltaic panel property information are obtained, and the wind load of the photovoltaic panel is determined according to the environmental information, the photovoltaic panel property information and the target correction factor, wherein the wind load includes photovoltaic panel lift and photovoltaic panel resistance.

[0015] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a photovoltaic array wind load calculation device, comprising:

[0016] A first acquisition module, used to acquire a first coefficient of a single photovoltaic panel at different inclination angles, wherein the first coefficient includes a first lift coefficient and a first drag coefficient;

[0017] A second acquisition module is used to acquire second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles, wherein the second coefficients include a second lift coefficient and a second drag coefficient;

[0018] a third acquisition module, for calculating, for the same inclination angle, a ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining a target correction factor of the photovoltaic panel at the target position according to the ratio, wherein the target correction factor includes a lift correction factor and a drag correction factor;

[0019] The wind load calculation module is used to obtain environmental information and photovoltaic panel attribute information, and determine the wind load of the photovoltaic panel according to the environmental information, the photovoltaic panel attribute information and the target correction factor, wherein the wind load includes the lift and resistance of the photovoltaic panel.

[0020] To achieve the above-mentioned purpose, the third aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0021] The memory stores computer-executable instructions;

[0022] The processor executes the computer-executable instructions stored in the memory to implement the method as described in the embodiment of the first aspect.

[0023] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the method described in the first aspect embodiment.

[0024] To achieve the above-mentioned purpose, the fifth aspect of the present application proposes a computer program product, including a computer program, which implements the method described in the first aspect when executed by a processor.

[0025] The photovoltaic array wind load calculation method and device provided in the present application determine the target correction factor of the photovoltaic panels affected by different positions and inclination angles through the first coefficient of a single photovoltaic panel at different inclination angles and the second coefficient of the photovoltaic panels at different positions in the photovoltaic array at different inclination angles, and use the target correction factor to correct the current calculation of the lift and drag of the photovoltaic panel, thereby optimizing the accuracy of wind load acquisition and solving the current problem of inaccurate wind load calculation.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A schematic diagram of a flow chart of a photovoltaic array wind load calculation method provided in an embodiment of the present application;

[0029] Figure 1A A schematic diagram of the lift resistance of a photovoltaic panel provided in an embodiment of the present application;

[0030] Figure 2 A schematic flow chart of another photovoltaic array wind load calculation method provided in an embodiment of the present application;

[0031] Figure 2A A lift-drag coefficient variation curve diagram provided in an embodiment of the present application;

[0032] Figure 2B A schematic diagram of a photovoltaic array provided in an embodiment of the present application;

[0033] Figure 2C A schematic diagram of a lift correction curve provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the structure of a photovoltaic array wind load calculation device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] This application can be applied to the design stage of photovoltaic panels. By calculating the wind load of photovoltaic panels, the reasonable layout of photovoltaic panels can be carried out to promote cost reduction and efficiency improvement in the photovoltaic industry. At present, the calculation of wind load of photovoltaic panels mainly relies on the methods provided by relevant specifications. For example, the wind load can be expressed as: w k =β z μ s μ z ω 0 , w k is the wind load, β z is the wind vibration coefficient at height z, μ s is the wind load shape factor, μ z is the wind pressure height variation coefficient, ω 0 The wind load body coefficient is the most important parameter, but the selection of this parameter does not take into account the different inclination angles and the shading of the photovoltaic panels. Therefore, the accuracy of the wind load calculated based on the above method is low. The following describes the photovoltaic array wind load calculation method, device and electronic device of the embodiment of the present application with reference to the accompanying drawings.

[0037] Figure 1 A schematic flow chart of a photovoltaic array wind load calculation method provided in an embodiment of the present application. Figure 1 As shown, the method comprises the following steps:

[0038] S101, obtaining a first coefficient of a single photovoltaic panel at different inclination angles.

[0039] Optionally, the first coefficient includes a first lift coefficient and a first drag coefficient. In some implementations, the lift coefficient is used to represent the lift of an object in a fluid (air or water), and represents the ability of an object to generate lift, and generally refers to the ratio of the lift of an object to the product of the airflow pressure and a reference area; the drag coefficient is used to represent the resistance of an object in a fluid, and is related to the shape, size, surface characteristics, and fluid dynamics characteristics of the object, such as Figure 1A Schematic diagram of the lift and drag of photovoltaic panels shown.

[0040] The lift coefficient and the drag coefficient can be calculated by experimental measurement or numerical simulation, that is, simulation calculation is performed based on the surface area of ​​the current photovoltaic panel, the wind speed in the environment and other information. The lift coefficient or drag coefficient corresponding to the photovoltaic panel at different inclination angles is different, so the first lift coefficient and the first drag coefficient of a single photovoltaic panel at different inclination angles are obtained.

[0041] It can be understood that when the first coefficient of a single photovoltaic panel is obtained, there is no shielding of the photovoltaic panel, that is, the first coefficient of the photovoltaic panel is only affected by the corresponding inclination angle of the photovoltaic panel.

[0042] S102, obtaining second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles.

[0043] Optionally, the second coefficient includes a second lift coefficient and a second drag coefficient. The photovoltaic panels are located at different positions in the photovoltaic array and are subject to different shielding conditions, which also affect the lift coefficient and drag coefficient of the photovoltaic panels. Therefore, for different inclination angles, the second coefficients of the photovoltaic panels at different positions under the inclination angles, that is, the second lift coefficient and the second drag coefficient, can be obtained according to experimental measurement or numerical simulation.

[0044] S103, for the same inclination angle, calculating the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining the target correction factor of the photovoltaic panel at the target position according to the ratio.

[0045] It can be understood that the first coefficient includes the first lift coefficient and the first drag coefficient, and the second coefficient includes the second lift coefficient and the second drag coefficient. Therefore, when calculating the ratio between the second coefficient and the first coefficient, the second lift coefficient in the second coefficient is actually calculated with the first lift coefficient in the first coefficient, and the second drag coefficient in the second coefficient is calculated with the first drag coefficient in the first coefficient; that is, at the same inclination angle, the lift ratio of the second lift coefficient of the photovoltaic panel at the target position and the first lift coefficient corresponding to the photovoltaic panel is calculated, and the drag ratio of the second drag coefficient of the photovoltaic panel at the target position and the first drag coefficient corresponding to the photovoltaic panel is calculated.

[0046] In some implementations, the lift ratio and the drag ratio can be directly used as the target correction factors of the photovoltaic panel at the target position. The target correction factors include the lift correction factor and the drag correction factor, that is, the lift ratio is the lift correction factor, and the drag ratio is the drag correction factor, so as to determine the target correction factor of the photovoltaic panel at the target position. The target correction factor takes into account the inclination angle corresponding to the photovoltaic panel and the shielding situation of the photovoltaic panel at the target position, so as to make the wind load analysis of the photovoltaic panel more accurate.

[0047] S104, obtaining environmental information and photovoltaic panel property information, and determining the wind load of the photovoltaic panel according to the environmental information, the photovoltaic panel property information and the target correction factor.

[0048] In some implementations, the environmental information may be information such as wind speed and air density; the photovoltaic panel attribute information may be the upper surface area of ​​the photovoltaic panel; and the corresponding photovoltaic panel lift and photovoltaic panel drag are obtained based on the environmental information, the photovoltaic panel attribute information, the lift correction factor and the drag correction factor in the target correction factor.

[0049] It is understandable that the current lift calculation method can be The resistance calculation method can be Among them, F l represents lift, F drepresents the resistance, ρ is the air density, V is the wind speed, S is the surface area of ​​the photovoltaic panel, C l is the lift coefficient, C d is the drag coefficient; the current calculation of lift and drag does not take into account the shading of the photovoltaic panels in the photovoltaic array, so the calculation accuracy of lift and drag is low.

[0050] After determining the target correction factor, this embodiment corrects the calculation of lift and drag with the target correction factor, and comprehensively considers the inclination angle and shading of the photovoltaic panel to obtain more accurate lift and drag; optionally, the product of lift and lift correction factor can be calculated to obtain a more accurate photovoltaic panel lift, and the product of drag and drag correction factor can be calculated to obtain a more accurate photovoltaic panel drag, thereby obtaining the wind load of the photovoltaic panel.

[0051] In this embodiment, the target correction factor of the photovoltaic panels affected by different positions and inclinations is determined by the first coefficient of a single photovoltaic panel at different inclination angles and the second coefficient of the photovoltaic panels at different positions in the photovoltaic array. The wind load is calculated based on the target correction factor, environmental information and photovoltaic panel attribute information. The wind load fully considers the impact of the shading conditions on the photovoltaic panels at different positions and the impact of different inclination angles. The obtained wind load is more accurate. Designing photovoltaic panels with accurate wind loads can effectively reduce resource loss.

[0052] Figure 2 A schematic flow chart of another photovoltaic array wind load calculation method provided in an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0053] S201, obtaining a first coefficient of a single photovoltaic panel at different inclination angles.

[0054] Optionally, computational fluid dynamics (CFD) simulation can be performed on the photovoltaic panel based on the inclination angle of the photovoltaic panel to obtain the first coefficient of the photovoltaic panel; that is, the control equations of fluid mechanics are solved by computer and numerical methods to simulate and analyze the fluid mechanics problem.

[0055] In some implementations, the first coefficient may also be calculated based on experimental measurements, such as aerodynamic tunnel tests and wind tunnel tests.

[0056] It is understandable that for a single photovoltaic panel, its lift coefficient and drag coefficient will vary according to the change of the inclination angle. Therefore, a lift and drag coefficient change curve can be generated with the inclination angle as the horizontal coordinate and the lift coefficient and drag coefficient as the vertical coordinate, such as Figure 2A shown.

[0057] In the embodiment of the present application, the implementation method of step S201 can be implemented by any of the methods in the embodiments of the present disclosure, which is not limited here and will not be repeated.

[0058] S202, obtaining second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles.

[0059] Optionally, the photovoltaic panel may be subjected to computational fluid dynamics (CFD) simulation based on the inclination angle of the photovoltaic panel and the target position of the photovoltaic panel to obtain the second coefficient of the photovoltaic panel. In some implementations, the second coefficient may also be determined based on experimental measurements, such as aerodynamic tunnel tests and wind tunnel tests. The photovoltaic array may refer to Figure 2B Arrange as shown.

[0060] In the embodiment of the present application, the implementation method of step S202 can be implemented by any of the methods in the embodiments of the present disclosure, which is not limited here and will not be repeated.

[0061] S203, for the same inclination angle, calculating the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel.

[0062] In response to the target correction factor being a lift correction factor, a lift ratio of a second lift coefficient at a target position in the photovoltaic array to a first lift coefficient of a single photovoltaic panel is calculated for the same inclination angle.

[0063] In response to the target correction factor being the drag correction factor, for the same inclination angle, a drag ratio of a second drag coefficient at a target position in the photovoltaic array to a first drag coefficient of a single photovoltaic panel is calculated.

[0064] S204, constructing a target correction curve according to the position sequence of the photovoltaic panels in the photovoltaic array and the ratios corresponding to the photovoltaic panels in the photovoltaic array.

[0065] It can be understood that the target correction curve includes a lift correction curve and a drag correction curve. Since the lift ratios and drag ratios corresponding to photovoltaic panels at different positions are different, the corresponding lift ratios can be statistically analyzed according to the position order of the photovoltaic panels to construct a lift correction curve. Correspondingly, the corresponding drag ratios can be statistically analyzed according to the position order of the photovoltaic panels to construct a drag correction curve.

[0066] For example, taking the lift correction curve as an example, the lift correction curve obtained at a fixed inclination angle is as follows: Figure 2C As shown, the lift ratio in the lift correction curve changes based on the change of the photovoltaic panel serial number, that is, the photovoltaic panels are located at different positions in the photovoltaic array, and the corresponding lift ratios are also different.

[0067] S205: Determine a convergence value and a convergence position corresponding to the convergence value according to the target correction curve.

[0068] It can be understood that due to the obstruction of the photovoltaic panels in the photovoltaic array, the wind load on the photovoltaic panels at the rear will gradually decrease, so their corresponding lift ratio and drag ratio will also decrease and eventually remain stable. Therefore, the lift ratio and drag ratio that tend to be stable in the target correction curve can be obtained as the convergence value, and the position of the photovoltaic panel corresponding to the convergence value can be obtained as the convergence position; the number of photovoltaic panels in the photovoltaic panel array should be large, so as to ensure that the convergence value can be determined.

[0069] S206, using the ratio corresponding to the photovoltaic panel as the target correction factor corresponding to each photovoltaic panel before the convergence position, and using the convergence value as the target correction factor corresponding to each photovoltaic panel after the convergence position.

[0070] It can be understood that in response to the target correction factor being the lift correction factor, the lift correction factor of each photovoltaic panel before the convergence position is the corresponding lift ratio. In response to the target correction factor being the drag correction factor, the drag correction factor of each photovoltaic panel before the convergence position is the corresponding drag ratio.

[0071] There will be differences in the convergence values ​​corresponding to the lift correction curve and the drag correction curve. Therefore, the lift convergence value is used as the lift correction factor corresponding to each photovoltaic panel after the convergence position, and the drag convergence value is used as the drag correction factor corresponding to each photovoltaic panel after the convergence position.

[0072] S207, obtaining environmental information and photovoltaic panel property information, and determining the wind load of the photovoltaic panel according to the environmental information, the photovoltaic panel property information and the target correction factor, the wind load including the photovoltaic panel lift and the photovoltaic panel drag.

[0073] In some implementations, air density and wind speed can be determined based on environmental information; photovoltaic panel surface area can be determined based on photovoltaic panel attribute information; and the product of a preset value and air density, wind speed, photovoltaic panel surface area, current lift coefficient and lift correction factor is calculated as the photovoltaic panel lift.

[0074] Alternatively, the calculation of the photovoltaic panel lift can be expressed as:

[0075]

[0076] Among them, F l represents lift, ρ is air density, V is wind speed, S is the surface area of ​​the photovoltaic panel, C l is the current lift coefficient, n l is the lift correction factor.

[0077] In some implementations, air density and wind speed can be determined based on environmental information; photovoltaic panel surface area can be determined based on photovoltaic panel property information; and the product of a preset value and air density, wind speed, photovoltaic panel surface area, current drag coefficient and drag correction factor is calculated as the photovoltaic panel resistance.

[0078] Alternatively, the calculation of the resistance of the photovoltaic panel can be expressed as:

[0079]

[0080] Among them, F d represents the resistance, ρ is the air density, V is the wind speed, S is the surface area of ​​the photovoltaic panel, C d is the current resistance coefficient, n d is the resistance correction factor.

[0081] In this embodiment, the wind load is obtained by calculating the lift and drag acting on the photovoltaic panel, and the first lift coefficient and the first drag coefficient under a single photovoltaic panel are obtained respectively, and the second lift coefficient and the second drag coefficient of the photovoltaic panels at different positions in the photovoltaic array are obtained, and the ratio of the second coefficient to the first coefficient is used as the lift correction factor and the drag correction factor, and when the ratio converges, the converged value is used as the subsequent lift correction factor and the drag correction factor, thereby reducing the amount of analysis and calculation, and the lift correction factor and the drag correction factor to be determined are combined with the air density and wind speed of the environmental information, as well as the surface area of ​​the photovoltaic panel and the current lift coefficient or the current drag coefficient to obtain the lift of the photovoltaic panel and the resistance of the photovoltaic panel, thereby obtaining a reliable wind load on the photovoltaic panel, and the photovoltaic panels are arranged and designed based on the accurate wind load, thereby promoting cost reduction and efficiency improvement in the photovoltaic industry.

[0082] In order to implement the above embodiment, the present application also proposes a photovoltaic array wind load calculation device.

[0083] Figure 3 The following is a schematic diagram of a photovoltaic array wind load calculation device provided in an embodiment of the present application. Figure 3 As shown, the photovoltaic array wind load calculation device 300 includes:

[0084] A first acquisition module 301 is used to acquire a first coefficient of a single photovoltaic panel at different inclination angles, where the first coefficient includes a first lift coefficient and a first drag coefficient;

[0085] A second acquisition module 302 is used to acquire second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles, where the second coefficients include a second lift coefficient and a second drag coefficient;

[0086] The third acquisition module 303 is used to calculate the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel for the same inclination angle, and determine the target correction factor of the photovoltaic panel at the target position according to the ratio, wherein the target correction factor includes a lift correction factor and a drag correction factor;

[0087] The wind load calculation module 304 is used to obtain environmental information and photovoltaic panel attribute information, and determine the wind load of the photovoltaic panel according to the environmental information, the photovoltaic panel attribute information and the target correction factor. The wind load includes the lift and resistance of the photovoltaic panel.

[0088] Furthermore, in a possible implementation of the embodiment of the present application, the wind load calculation module 304 includes:

[0089] Determine air density and wind speed based on environmental information;

[0090] determining a surface area of ​​the photovoltaic panel based on the photovoltaic panel property information;

[0091] The product of the preset value, air density, wind speed, photovoltaic panel surface area, current lift coefficient and lift correction factor is calculated as the photovoltaic panel lift.

[0092] Furthermore, in a possible implementation of the embodiment of the present application, the wind load calculation module 304 includes:

[0093] Determine air density and wind speed based on environmental information;

[0094] determining a surface area of ​​the photovoltaic panel based on the photovoltaic panel property information;

[0095] The product of the preset value and the air density, wind speed, photovoltaic panel surface area, current drag coefficient and drag correction factor is calculated as the photovoltaic panel resistance.

[0096] Further, in a possible implementation of the embodiment of the present application, the target correction factor is a lift correction factor, and the third acquisition module 303 includes:

[0097] For the same inclination angle, the lift ratio of the second lift coefficient of the target position in the photovoltaic array to the first lift coefficient of a single photovoltaic panel is calculated;

[0098] The lift ratio is used as the lift correction factor of the photovoltaic panel at the target position.

[0099] Furthermore, in a possible implementation of the embodiment of the present application, the target correction factor is a resistance correction factor, and the third acquisition module 303 includes:

[0100] For the same inclination angle, the drag ratio of the second drag coefficient at the target position in the photovoltaic array to the first drag coefficient of a single photovoltaic panel is calculated;

[0101] The resistance ratio is used as the resistance correction factor of the photovoltaic panel at the target position.

[0102] Furthermore, in a possible implementation of the embodiment of the present application, the third acquisition module 303 includes:

[0103] According to the position sequence of the photovoltaic panels in the photovoltaic array, a target correction curve is constructed with the ratio corresponding to each photovoltaic panel in the photovoltaic array;

[0104] According to the target correction curve, the convergence value and the convergence position corresponding to the convergence value are determined;

[0105] The ratio corresponding to the photovoltaic panel is used as the target correction factor corresponding to each photovoltaic panel before the convergence position, and the convergence value is used as the target correction factor corresponding to each photovoltaic panel after the convergence position.

[0106] Furthermore, in a possible implementation of the embodiment of the present application, the first acquisition module 301 includes:

[0107] Based on the inclination angle of the photovoltaic panel, a computational fluid dynamics (CFD) simulation is performed on the photovoltaic panel to obtain the first coefficient of the photovoltaic panel.

[0108] Furthermore, in a possible implementation of the embodiment of the present application, the second acquisition module 302 includes:

[0109] Based on the inclination angle of the photovoltaic panel and the target position of the photovoltaic panel, a computational fluid dynamics (CFD) simulation is performed on the photovoltaic panel to obtain a second coefficient of the photovoltaic panel.

[0110] It should be noted that the above explanations of the embodiment of the photovoltaic array wind load calculation method are also applicable to the photovoltaic array wind load calculation device of this embodiment, and will not be repeated here.

[0111] In an embodiment of the present application, the target correction factor of the photovoltaic panel affected by different positions and inclinations is determined by using the first coefficient of a single photovoltaic panel at different inclination angles and the second coefficient of the photovoltaic panels at different positions in the photovoltaic array. The wind load is calculated using the target correction factor, environmental information and photovoltaic panel attribute information. The wind load fully considers the impact of the shading conditions on the photovoltaic panels at different positions and the impact of different inclination angles. The obtained wind load is more accurate. Designing photovoltaic panels with accurate wind loads can effectively reduce resource loss.

[0112] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0113] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0114] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0115] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0116] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0117] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0118] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0119] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0120] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0121] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0122] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0123] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0124] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0125] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for calculating wind load on photovoltaic arrays. It is characterized in that The following steps are involved: Acquire a first coefficient of a single photovoltaic panel at different inclination angles, wherein the first coefficient includes a first lift coefficient and a first drag coefficient; Acquire second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles, wherein the second coefficients include a second lift coefficient and a second drag coefficient; For the same inclination angle, calculating the ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining the target correction factor of the photovoltaic panel at the target position according to the ratio, wherein the target correction factor includes a lift correction factor and a drag correction factor; Environmental information and photovoltaic panel property information are obtained, and the wind load of the photovoltaic panel is determined according to the environmental information, the photovoltaic panel property information and the target correction factor, wherein the wind load includes photovoltaic panel lift and photovoltaic panel resistance.

2. The method according to claim 1, It is characterized in that The method for obtaining the lifting force of the photovoltaic panel comprises: determining air density and wind speed based on the environmental information; Determining a photovoltaic panel surface area based on the photovoltaic panel property information; The product of a preset value and the air density, the wind speed, the surface area of ​​the photovoltaic panel, the current lift coefficient and the lift correction factor is calculated as the photovoltaic panel lift.

3. The method according to claim 1, It is characterized in that The method for obtaining the resistance of the photovoltaic panel comprises: determining air density and wind speed based on the environmental information; Determining a photovoltaic panel surface area based on the photovoltaic panel property information; The product of a preset value and the air density, the wind speed, the surface area of ​​the photovoltaic panel, the current drag coefficient and the drag correction factor is calculated as the photovoltaic panel resistance.

4. The method according to any one of claims 1 to 4, It is characterized in that The target correction factor is a lift correction factor, and the method comprises: For the same inclination angle, the lift ratio of the second lift coefficient of the target position in the photovoltaic array to the first lift coefficient of a single photovoltaic panel is calculated; The lift ratio is used as a lift correction factor for the photovoltaic panel at the target position.

5. The method according to any one of claims 1 to 4, It is characterized in that The target correction factor is a resistance correction factor, and the method includes: For the same inclination angle, the drag ratio of the second drag coefficient at the target position in the photovoltaic array to the first drag coefficient of a single photovoltaic panel is calculated; The resistance ratio is used as a resistance correction factor of the photovoltaic panel at the target position.

6. The method according to claim 1, It is characterized in that The step of determining a target correction factor of the photovoltaic panel at the target position according to the ratio further includes: According to the position sequence of the photovoltaic panels in the photovoltaic array, a target correction curve is constructed with the ratios corresponding to the photovoltaic panels in the photovoltaic array; Determining a convergence value and a convergence position corresponding to the convergence value according to the target correction curve; The ratio corresponding to the photovoltaic panels is used as the target correction factor corresponding to each photovoltaic panel before the convergence position, and the convergence value is used as the target correction factor corresponding to each photovoltaic panel after the convergence position.

7. The method according to claim 1, It is characterized in that The method for obtaining the first coefficient includes: Based on the inclination angle of the photovoltaic panel, a computational fluid dynamics (CFD) simulation is performed on the photovoltaic panel to obtain a first coefficient of the photovoltaic panel.

8. The method according to claim 1, It is characterized in that The method for obtaining the second coefficient includes: Based on the inclination angle of the photovoltaic panel and the target position of the photovoltaic panel, a computational fluid dynamics (CFD) simulation is performed on the photovoltaic panel to obtain a second coefficient of the photovoltaic panel.

9. A photovoltaic array wind load calculation device, It is characterized in that include: A first acquisition module, used to acquire a first coefficient of a single photovoltaic panel at different inclination angles, wherein the first coefficient includes a first lift coefficient and a first drag coefficient; A second acquisition module is used to acquire second coefficients of photovoltaic panels at different positions in the photovoltaic array at different inclination angles, wherein the second coefficients include a second lift coefficient and a second drag coefficient; a third acquisition module, for calculating, for the same inclination angle, a ratio of the second coefficient of the photovoltaic panel at the target position to the first coefficient corresponding to the photovoltaic panel, and determining a target correction factor of the photovoltaic panel at the target position according to the ratio, wherein the target correction factor includes a lift correction factor and a drag correction factor; The wind load calculation module is used to obtain environmental information and photovoltaic panel attribute information, and determine the wind load of the photovoltaic panel according to the environmental information, the photovoltaic panel attribute information and the target correction factor, wherein the wind load includes the lift and resistance of the photovoltaic panel.

10. An electronic device, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 8.

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