Method and device for rapidly estimating capacity of mountain fixed support photovoltaic project

Abstract

The invention discloses a method and device for rapidly estimating the capacity of a mountain fixed support photovoltaic project, and the method comprises the steps: determining the position of a land for the mountain photovoltaic project, and obtaining the basic parameters of the project, which comprise the land red line range and contour line data; determining the type selection of a photovoltaic module, the width of a photovoltaic array bracket and the optimal inclination angle of a photovoltaic array, judging the slope direction and the slope range of an available land parcel, and outputting an available typical land parcel; calculating an area equivalent factor of each available typical land parcel according to the shadow length of the photovoltaic array under the flat ground working condition, counting the area of each available typical land parcel in the land use red line range, and calculating and outputting the equivalent area sum of the available typical land parcels in the land use red line range according to the area equivalent factor of each available typical land parcel; and according to the equivalent area sum of the available typical land parcels in the land use red line range, performing estimation, and outputting the project developable capacity. According to the method, the arrangement capacity of the mountain fixed bracket photovoltaic project can be quickly estimated.

Description

Technical Field

[0001] This invention relates to a method and apparatus for rapid capacity estimation of fixed-support photovoltaic projects in mountainous areas, belonging to the technical field of mountainous photovoltaic projects. Background Technology

[0002] Photovoltaic power generation projects have benefited from the significant decrease in construction costs in recent years. However, on the one hand, fluctuations in electricity price policies require investors to quickly and accurately assess the profitability of photovoltaic projects in the early stages; on the other hand, restrictions on land use policies prevent subsequent photovoltaic projects from using arable land in plains areas, gradually limiting project development in plains areas, and photovoltaic development hotspots are gradually shifting towards complex mountainous areas.

[0003] Mountain solar power is characterized by complex site environments, poor construction conditions, and high design difficulty. Against the backdrop of increasingly fierce competition in mountain solar power, how to quickly obtain project capacity during the project decision-making stage has become the basis for project investment decisions and has a certain impact on the success or failure of the project.

[0004] Currently, some software developers have developed commercial software such as Candela3D and PVDP3D for mountain photovoltaic deployment. However, the mountain photovoltaic capacity obtained based on these software still requires a certain amount of time and effort and is difficult to fully meet the needs of rapid capacity estimation in the early decision-making stage. Therefore, there is an urgent need for a rapid capacity estimation method for mountain photovoltaic projects that can meet the requirements of the early decision-making stage. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for rapid estimation of the capacity of mountain-mounted fixed-support photovoltaic projects. By using mountain-mounted fixed-support methods, the exploitable capacity of mountain photovoltaic projects can be quickly determined, thereby improving the accuracy of the estimation.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0007] In a first aspect, the present invention provides a method for rapid capacity estimation of fixed-support photovoltaic projects in mountainous areas, comprising:

[0008] Determine the location of the mountain photovoltaic project site and obtain the basic parameters of the project, including the land boundary and contour data;

[0009] Based on the basic parameters of the project, determine the selection of photovoltaic modules, the width of the photovoltaic array support, and the optimal tilt angle of the photovoltaic array, and judge the slope aspect and slope range of the available land plots, and output the typical available land plots;

[0010] Based on the shadow length of the photovoltaic array under flat land conditions, calculate the area equivalence factor of each available typical plot, count the area of ​​each available typical plot within the land boundary, and calculate and output the total equivalent area of ​​the available typical plots within the land boundary based on the area equivalence factor of each available typical plot.

[0011] Based on the total equivalent area of ​​typical available land parcels within the land use boundary, the project's developable capacity is estimated and output.

[0012] Furthermore, the slope aspect and slope range of the available land plots for the project are clarified, and typical land plots for the project are identified. The slope aspects of the available land plots include north slope, northeast slope, east slope, southeast slope, south slope, southwest slope, west slope, northwest slope, and north slope.

[0013] Available land slopes include 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35° and 40°;

[0014] The criteria for determining the usable typical land parcels include:

[0015] If the slope of the south slope is no greater than 40°, the slope of the southeast and southwest slopes is no greater than 25°, the slope of the east and west slopes is no greater than 15°, and the slope of the north, northeast and northwest slopes is no greater than 10°, it is determined to be a usable typical plot.

[0016] If the conditions are not met, the site will not be classified as a usable typical plot, and photovoltaic modules will not be considered for installation.

[0017] The method of this invention selects suitable typical plots of land that meet the requirements of slope aspect and slope for the installation of photovoltaic modules. While taking into account the terrain conditions and light energy reception efficiency, it effectively avoids resource waste, thereby improving land use efficiency and reducing project development costs.

[0018] Furthermore, photovoltaic arrays with arbitrary slopes and slope aspects, and north-south center spacing, can be used on typical plots. The length is calculated using the shading length of the photovoltaic array, and the expression is:

[0019] ;

[0020] in, The horizontal projected length of the north-south center-to-center spacing of the photovoltaic array, in meters; It is the angle between the sun's azimuth and due south, expressed in degrees. The tilt angle of the photovoltaic array is expressed in degrees (°). The angle between the slope direction and the south direction is expressed in degrees, where the south slope is 0°, the east slope is 90°, the north slope is 180°, and the west slope is -90°. This refers to the terrain slope, in degrees (°). The angle between the slope aspect and the solar azimuth is expressed in degrees (°). The solar altitude angle is expressed in degrees (°). The formula for its calculation is: ,in Latitude This is the solar declination angle, typically taken as 23.45 degrees. Solar hour angle; The width of the photovoltaic array support is in meters (m).

[0021] Furthermore, using the shadow length of the photovoltaic array under flat land conditions as a reference, the area equivalence factor of each typical available plot is calculated. The expression is:

[0022] ;

[0023] in, For each available typical plot of land, the area equivalent factor is... The length of the shadow cast by the photovoltaic support structure on flat ground. The horizontal projection length of the shadow of the photovoltaic support structure on each available typical plot of land.

[0024] Furthermore, the area of ​​each usable typical plot within the land use boundary is calculated separately. The area of ​​each usable typical plot within the land use boundary is analyzed using application software, based on the contour data, including slope and aspect analysis, including:

[0025] First, a TIN topographic model of the land boundary is established using tools; second, the TIN topographic model is converted into a raster; finally, based on the raster model, the slope and aspect of the available plots are analyzed, and the area of ​​each available typical plot is calculated according to the classification table of available typical plots.

[0026] The method of this invention uses professional application software to statistically analyze the area of ​​each available typical plot, effectively avoiding the error problem of traditional measurement methods. It can quickly and accurately extract the area of ​​typical plots, thus improving efficiency.

[0027] Furthermore, based on the area equivalence factors of each available typical plot, the total equivalent area within the land boundary is calculated, expressed as:

[0028] ;

[0029] in, The area of ​​each available typical plot of land, This represents the area equivalence factor for each available typical plot of land.

[0030] Furthermore, based on the equivalent area within the land boundary, the project's developable capacity is calculated, and the expression for the project's developable capacity is as follows:

[0031] ;

[0032] in, The area occupied by a single MWp photovoltaic project under flat terrain conditions is the land area. MWp is the peak power of megawatts.

[0033] Secondly, the present invention provides a device for rapid capacity estimation of fixed-support photovoltaic projects in mountainous areas, comprising:

[0034] The data acquisition module is used to determine the location of the mountain photovoltaic project site and acquire the basic parameters of the project, including the land boundary and contour data.

[0035] The land parcel determination module is used to determine the photovoltaic module selection, photovoltaic array support width, and optimal tilt angle of the photovoltaic array based on the basic parameters of the project, and to judge the slope aspect and slope range of the available land parcels, and output typical available land parcels.

[0036] The area statistics module is used to calculate the area equivalence factor of each available typical plot based on the shadow length of the photovoltaic array under flat land conditions, to count the area of ​​each available typical plot within the land boundary line, and to calculate and output the total equivalent area of ​​the available typical plots within the land boundary line based on the area equivalence factor of each available typical plot.

[0037] The capacity estimation module is used to estimate the project's developable capacity based on the total equivalent area of ​​typical available land parcels within the land boundary.

[0038] Thirdly, the present invention provides a computer-readable storage medium having a computer program / instruction stored thereon, which, when executed by a processor, implements the steps of the method for rapid capacity estimation of a mountain-mounted fixed-support photovoltaic project as described in any of the first aspects.

[0039] Fourthly, the present invention provides a computer device, comprising:

[0040] Memory, used to store computer programs / instructions;

[0041] A processor for executing the computer program / instructions to implement the steps of the method for rapid capacity estimation of a mountain-mounted fixed-support photovoltaic project as described in any one of the first aspects.

[0042] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0043] 1. The method for rapid capacity estimation of fixed-support photovoltaic projects in mountainous areas provided by this invention is based on the available boundary line range and contour line data of photovoltaic land in mountainous areas. By calculating the equivalent area of ​​each available typical plot, the total equivalent area within the boundary line range is obtained. Referring to the land area of ​​flat land projects, the developable capacity of the project is obtained. The method of this invention requires less original data to calculate the developable capacity of photovoltaic projects, the calculation process is simple, the calculation time is significantly reduced compared with traditional methods, and it has high calculation accuracy. The overall implementation process is simple and highly operable.

[0044] 2. The mountain-fixed bracket photovoltaic project capacity rapid estimation device provided by the present invention, by setting up a data acquisition module, a land plot determination module, an area statistics module and a capacity estimation module, jointly realizes the estimation of the developable capacity of the photovoltaic project, further improving the estimation speed, and is suitable for the rapid investment decision-making stage of photovoltaic projects without relying on mountain photovoltaic deployment software;

[0045] 3. The computer-readable storage medium and computer device provided by the present invention can execute the steps of the method for rapid capacity estimation of mountain-mounted fixed-support photovoltaic projects provided by the present invention. Attached Figure Description

[0046] Figure 1 A flowchart illustrating a method for rapid capacity estimation of fixed-mountain photovoltaic projects according to an embodiment of the present invention. Detailed Implementation

[0047] It should be noted that:

[0048] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0049] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0050] Example 1

[0051] like Figure 1 As shown in the figure, this embodiment introduces a method for rapid capacity estimation of fixed-mountain photovoltaic projects, including:

[0052] Determine the location of the mountain photovoltaic project site and obtain the basic parameters of the project, including the land boundary and contour data;

[0053] Based on the basic parameters of the project, determine the selection of photovoltaic modules, the width of the photovoltaic array support, and the optimal tilt angle of the photovoltaic array, and judge the slope aspect and slope range of the available land plots, and output the typical available land plots;

[0054] Based on the shadow length of the photovoltaic array under flat land conditions, calculate the area equivalence factor of each available typical plot, count the area of ​​each available typical plot within the land boundary, and calculate and output the total equivalent area of ​​the available typical plots within the land boundary based on the area equivalence factor of each available typical plot.

[0055] Based on the total equivalent area of ​​typical available land parcels within the land use boundary, the project's developable capacity is estimated and output.

[0056] Furthermore, the slope aspect and slope range of the available land plots for the project are clarified, and typical available land plots for the project are identified. The slope aspects of the available land plots include north slope, northeast slope, east slope, southeast slope, south slope, southwest slope, west slope, northwest slope, and north slope.

[0057] Available land slopes include 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35° and 40°;

[0058] The criteria for determining the usable typical land parcels include:

[0059] If the slope of the south slope is no greater than 40°, the slope of the southeast and southwest slopes is no greater than 25°, the slope of the east and west slopes is no greater than 15°, and the slope of the north, northeast and northwest slopes is no greater than 10°, it is determined to be a usable typical plot.

[0060] If the conditions are not met, the site will not be classified as a usable typical plot, and photovoltaic modules will not be considered for installation.

[0061] In this embodiment, typical usable plots are determined based on different slope aspects and gradients, as shown in Table 1:

[0062] Table 1 Typical Available Plots

[0063]

[0064] Furthermore, photovoltaic arrays with arbitrary slopes and slope aspects, and north-south center spacing, can be used on typical plots. The length is calculated using the shading length of the photovoltaic array, and the expression is:

[0065] ;

[0066] in, The horizontal projected length of the north-south center-to-center spacing of the photovoltaic array, in meters; The angle between the sun's azimuth and due south is expressed in degrees. In this embodiment, the local true solar time at 9:00 and 15:00 on the winter solstice is set to -45° and 45°, respectively. The tilt angle of the photovoltaic array is expressed in degrees (°). The angle between the slope direction and the south direction is expressed in degrees, where the south slope is 0°, the east slope is 90°, the north slope is 180°, and the west slope is -90°. This refers to the terrain slope, in degrees (°). The angle between the slope direction and the solar azimuth is expressed in degrees. In this embodiment, the angle is determined as follows: if... ,but ;like ,but ; The solar altitude angle is expressed in degrees (°). The formula for its calculation is: ,in Latitude This is the solar declination angle, typically taken as 23.45 degrees. The solar hour angle is set to -45° at 9:00 and 45° at 15:00 in this embodiment. The width of the photovoltaic array support is in meters (m).

[0067] Furthermore, using the shadow length of the photovoltaic array under flat land conditions as a reference, the area equivalence factor of each typical available plot is calculated. The expression is:

[0068] ;

[0069] in, For each available typical plot of land, the area equivalent factor is... The length of the shadow cast by the photovoltaic support structure on flat ground. The horizontal projection length of the shadow of the photovoltaic support structure on each available typical plot of land.

[0070] Furthermore, the area of ​​each typical plot within the land use boundary is statistically analyzed. The area of ​​each usable typical plot within the land use boundary is analyzed using ArcGIS software, based on the contour data, to determine slope and aspect. The steps are as follows:

[0071] First, a TIN terrain model of the land boundary is established using 3D Analyst Tools. Second, the TIN terrain model is converted into a raster. Finally, based on the raster model, the slope and aspect of the available plots are analyzed, and the area of ​​each typical plot is calculated according to the classification table of available typical plots.

[0072] Furthermore, the total equivalent area within the land boundary is calculated based on the equivalence factor, and the expression is as follows:

[0073] ;

[0074] in, The area of ​​each available typical plot of land, This represents the area equivalence factor for each available typical plot of land.

[0075] Furthermore, based on the equivalent area within the land boundary, the project's developable capacity is calculated, and the expression for the project's developable capacity is as follows:

[0076] ;

[0077] in, This refers to the land area occupied by a single megawatt peak photovoltaic project under flat terrain conditions.

[0078] Example 2

[0079] Based on the rapid capacity estimation method for mountain-mounted fixed-support photovoltaic projects described in Example 1, this example introduces a rapid capacity estimation device for mountain-mounted fixed-support photovoltaic projects, including:

[0080] The data acquisition module is used to determine the location of the mountain photovoltaic project site and acquire the basic parameters of the project, including the land boundary and contour data.

[0081] The land parcel determination module is used to determine the photovoltaic module selection, photovoltaic array support width, and optimal tilt angle of the photovoltaic array based on the basic parameters of the project, and to judge the slope aspect and slope range of the available land parcels, and output typical available land parcels.

[0082] The area statistics module is used to calculate the area equivalence factor of each available typical plot based on the shadow length of the photovoltaic array under flat land conditions, to count the area of ​​each available typical plot within the land boundary line, and to calculate and output the total equivalent area of ​​the available typical plots within the land boundary line based on the area equivalence factor of each available typical plot.

[0083] The capacity estimation module is used to estimate the project's developable capacity based on the total equivalent area of ​​typical available land parcels within the land boundary.

[0084] Example 3

[0085] Based on the method for rapid capacity estimation of a mountain-mounted fixed-support photovoltaic project described in Embodiment 1, this embodiment introduces a computer-readable storage medium storing a computer program / instruction. When the computer program / instruction is executed by a processor, it implements the steps of the method for rapid capacity estimation of a mountain-mounted fixed-support photovoltaic project as described in any of Embodiment 1.

[0086] Example 4

[0087] Based on the rapid capacity estimation method for a mountain-mounted fixed-support photovoltaic project described in Example 1, this example provides a computer device, including:

[0088] Memory, used to store computer programs / instructions;

[0089] A processor is used to execute the computer program / instructions to implement the steps of the method for rapid capacity estimation of a mountain-mounted fixed-support photovoltaic project as described in any one of Embodiments 1.

[0090] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied 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.

[0091] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0092] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0093] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0094] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for rapid estimation of the capacity of a mountain fixed support photovoltaic project, characterized in that, The method comprises the following steps: determining the location of the land for the mountain photovoltaic project, and obtaining basic parameters of the project, wherein the basic parameters of the project include the red line range of the land and contour data; determining the photovoltaic component selection, the photovoltaic array support width and the optimal inclination of the photovoltaic array according to the basic parameters of the project, and judging the slope direction and slope range of the available land block, and outputting the available typical land block; calculating the area equivalent factor of each available typical land block according to the shadow length of the photovoltaic array under the flat ground condition, and calculating and outputting the total equivalent area of the available typical land block within the red line range of the land according to the area of each available typical land block within the red line range of the land and the area equivalent factor of each available typical land block; estimating the total equivalent area of the available typical land block within the red line range of the land, and outputting the developable capacity of the project.

2. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, The slope direction of the available land block includes north slope, northeast slope, east slope, southeast slope, south slope, southwest slope, west slope, northwest slope and north slope; The slope of the available land block includes 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35° and 40°; The judgment basis of the available typical land block includes: if the slope of the south slope is not greater than 40°, the slope of the southeast slope and the southwest slope is not greater than 25°, the slope of the east slope and the west slope is not greater than 15°, and the slope of the north slope, the northeast slope and the northwest slope is not greater than 10°, it is determined that the available typical land block is divided.

3. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, Typically, the south-north center-to-center spacing of the photovoltaic array can be any slope, slope orientation The shadow length of the photovoltaic array is calculated by the expression: ； wherein, is the horizontal projection length of the north-south center-to-center spacing of the photovoltaic array; is the solar azimuth angle and the angle between the slope aspect and the south direction; is the tilt angle of the photovoltaic array; is the angle between the slope aspect and the south direction; is the terrain slope; is the angle between the slope aspect and the solar azimuth angle; is the solar altitude angle, and the calculation formula is wherein, is the latitude, is the solar declination angle, is the solar hour angle; is the photovoltaic array support width.

4. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, Area equivalent factor of each of the available typical plots The expression is: ； wherein, is the length of the shadow of the photovoltaic support on the flat ground, is the length of the horizontal projection of the shadow of the photovoltaic support on each available typical plot.

5. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, The area of each available typical land block within the red line range of the land is analyzed based on the slope and the slope direction by using the application software, and the steps are as follows: firstly, a TIN terrain model of the red line range of the land is established by using a tool; secondly, the TIN terrain model is converted into a grid; finally, the slope and the slope direction of the available land block are analyzed based on the grid model, and the area of each available typical land block is counted according to the available typical land block classification table.

6. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, The expression of the total equivalent area within the red line range of the land is: ； wherein, is the area of each available typical plot, is the area equivalent factor of each available typical plot.

7. The method for rapid estimation of the capacity of a mountain fixed support photovoltaic project according to claim 1, characterized in that, The expression of the developable capacity of the project is: ； wherein, Area of single MWp photovoltaic project in flat ground condition, MWp is megawatt peak.

8. A device for rapid estimation of capacity of a mountain fixed support photovoltaic project, characterized by, The method comprises the following steps: a data acquisition module is used to determine the location of the land for the mountain photovoltaic project, and obtain the basic parameters of the project, wherein the basic parameters of the project include the red line range of the land and contour data; a land block determination module is used to determine the photovoltaic component selection, the photovoltaic array support width and the optimal inclination of the photovoltaic array according to the basic parameters of the project, and judge the slope direction and slope range of the available land block, and output the available typical land block; an area counting module is used to calculate the area equivalent factor of each available typical land block according to the shadow length of the photovoltaic array under the flat ground condition, count the area of each available typical land block within the red line range of the land, and calculate and output the total equivalent area of the available typical land block within the red line range of the land according to the area equivalent factor of each available typical land block; a capacity estimation module is used to estimate the total equivalent area of the available typical land block within the red line range of the land, and output the developable capacity of the project.

9. A computer readable storage medium having stored thereon computer programs / instructions, characterized in that, When the computer program / instruction is executed by the processor, the steps of the mountain fixed support photovoltaic project capacity rapid estimation method in any one of claims 1-7 are implemented.

10. A computer apparatus / device / system, characterized by, The method comprises the following steps: a memory is used to store the computer program / instruction; A processor for executing the computer programs / instructions to implement the steps of the mountain fixed support photovoltaic project capacity rapid estimation method according to any one of claims 1 to 7.

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