Segmented design method and equipment of photovoltaic power station, medium and product

Abstract

The invention provides a segmented design method and equipment of a photovoltaic power station, a medium and a product. The segmented design method of the photovoltaic power station comprises the steps of obtaining a three-dimensional model of a photovoltaic power station installation area; performing photovoltaic panel layout design on the three-dimensional model to obtain a preliminary layout scheme; performing preliminary index verification on the preliminary layout scheme, wherein the preliminary index verification comprises shadow analysis and generating capacity verification; and judging whether the preliminary index verification meets a preset target requirement or not, if so, carrying out electrical connection design on the basis of the preliminary layout scheme to obtain a to-be-used scheme, and if not, re-executing the step of carrying out photovoltaic panel layout design on the three-dimensional model. The photovoltaic power station is designed in a sectional mode, the workload during repeated design is effectively reduced, design efficiency can be improved, and system operation resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic construction, and in particular to a segmented design method, equipment, medium and product of a photovoltaic power station. Background Art

[0002] Photovoltaic power station refers to a power generation system that converts solar energy into electrical energy using photovoltaic panels and power distribution equipment. It is one of the most common new energy technologies. With the increasing development of new energy technologies, photovoltaic power stations have also been more widely used, not only in open suburban land, but also increasingly built on building roofs. In order to meet the increasingly abundant design work of household photovoltaic power stations, some automatic design technologies have been proposed in the existing technology to improve design efficiency. However, there is still room for further optimization of the existing design scheme. Summary of the invention

[0003] An object of the present invention is to provide a segmented design method, device, medium and product for a photovoltaic power station that can save system operation resources.

[0004] In particular, the present invention provides a segmented design method for a photovoltaic power station, comprising:

[0005] Obtain a three-dimensional model of the photovoltaic power station installation area;

[0006] Designing the layout of photovoltaic panels in the three-dimensional model to obtain a preliminary layout plan;

[0007] Conducting preliminary indicator verification on the preliminary layout plan, wherein the preliminary indicator verification includes shadow analysis and power generation verification;

[0008] Determine whether the preliminary index verification meets the preset target requirements. If so, perform electrical connection design based on the preliminary layout plan to obtain a plan to be used. If not, re-execute the step of performing photovoltaic panel layout design on the three-dimensional model.

[0009] Optionally, the preliminary indicator verification also includes preliminary cost verification, and the step of conducting preliminary cost verification on the preliminary layout plan includes:

[0010] Acquire first layout information of the preliminary layout scheme, wherein the first layout information includes a total area occupied by photovoltaic panels, an inclination angle of photovoltaic panels, and a number of photovoltaic panels of the preliminary layout scheme;

[0011] Acquire second layout information corresponding to a preset template layout, the second layout information including a total area occupied by photovoltaic panels, an inclination angle of photovoltaic panels, and a number of photovoltaic panels of the preset template layout, the preset template layout being a preset layout scheme with a determined cost;

[0012] The preliminary cost verification is performed according to a ratio of the first layout information to the second layout information and a cost of the preset template layout.

[0013] Optionally, the step of performing the preliminary cost verification according to the ratio of the first layout information to the second layout information and the cost of the preset template layout includes:

[0014] Taking the modulus of the vector formed by each information in the first layout information, and recording it as the first modulus;

[0015] Taking the modulus of the vector formed by each information in the second layout information, and recording it as the second modulus;

[0016] Determine whether the product of the cost of the preset template layout and the ratio of the first module value to the second module value meets the preset target cost. If so, determine that the cost verification meets the requirements; if not, determine that the cost verification does not meet the requirements.

[0017] Optionally, the step of performing electrical connection design based on the preliminary layout scheme includes:

[0018] Dividing the photovoltaic panels of the preliminary layout plan into photovoltaic groups, wherein the photovoltaic group is a plurality of photovoltaic panels connected to the same first power distribution device;

[0019] Determine the number of first power distribution devices and the number of second power distribution devices according to the number of photovoltaic groups;

[0020] Determining an installation position of a first power distribution device of each photovoltaic group relative to the photovoltaic group;

[0021] Determine the corresponding installation position of the second power distribution device according to the installation positions of all first power distribution devices connected to the same second power distribution device;

[0022] Connecting the photovoltaic panels in each photovoltaic group to the corresponding first power distribution equipment through cables, and connecting each first power distribution equipment to the corresponding second power distribution equipment through cables;

[0023] The first power distribution device is used to connect multiple photovoltaic panels, and the second power distribution device is used to connect multiple first power distribution devices.

[0024] Optionally, the step of determining the corresponding installation position of the second power distribution device according to the installation positions of all first power distribution devices connected to the same second power distribution device includes:

[0025] If the number of first power distribution devices connected to the same second power distribution device is greater than two, a closed graph is constructed with all the first power distribution devices as vertices;

[0026] A position in the constructed closed graph at which the sum of distances to all vertices is the smallest is determined as the installation position of the second power distribution device.

[0027] Optionally, after the step of determining the position with the smallest sum of distances to all vertices in the constructed closed graph as the installation position of the second power distribution equipment, the step further includes:

[0028] If the installation position is not in the effective area, a position closest to the installation position is selected in the effective area as a new installation position.

[0029] Optionally, after the step of performing electrical connection design based on the preliminary layout scheme, the following steps are included:

[0030] Determine whether the cost of the scheme to be used meets the preset target requirements. If so, construct the photovoltaic power station according to the scheme to be used. If not, re-execute the step of designing electrical connections based on the preliminary layout plan.

[0031] Optionally, the step of obtaining a three-dimensional model of the photovoltaic power station installation area includes:

[0032] Controlling the UAV to take aerial photos of the installation area to obtain a survey image;

[0033] The three-dimensional model is generated according to the survey image.

[0034] Optionally, the step of designing a photovoltaic panel layout in the three-dimensional model includes:

[0035] Determine the specifications of the photovoltaic panels;

[0036] Determine the installation inclination angle of the photovoltaic panels;

[0037] The photovoltaic panels are laid on the three-dimensional model according to the specification parameters of the photovoltaic panels and the installation inclination angle.

[0038] In another aspect of the present application, a computer device is provided, comprising a memory, a processor, and a computer executable program stored in the memory and running on the processor, and when the processor executes the computer executable program, the segmented design method of the photovoltaic power station according to any one of the above items is implemented.

[0039] In another aspect of the present application, a computer-readable storage medium is provided, on which a computer-executable program is stored. When the computer-executable program is executed by a processor, the segmented design method of a photovoltaic power station according to any one of the above items is implemented.

[0040] In another aspect of the present application, a computer program product is provided, including a computer executable program, and when the computer executable program is executed by a processor, the segmented design method of a photovoltaic power station according to any one of the above items is implemented.

[0041] The segmented design method of the photovoltaic power station of the present invention obtains a preliminary layout plan for preliminary indicator verification after the photovoltaic panel layout design is performed. When the preliminary indicator verification meets the preset target requirements, the electrical connection design is performed on the basis of the preliminary layout plan. If the preliminary indicator verification does not meet the design requirements, the photovoltaic panel layout design is performed again. In other words, the photovoltaic power station is designed in segments. After the first segment of the photovoltaic panel layout design, if the preliminary indicator verification does not meet the target requirements, the electrical connection design of the second segment will not be performed. Compared with the calculation of various indicators after the photovoltaic power station is fully designed, the segmented design of the present application can timely verify some indicators that can be clearly determined after the photovoltaic panel layout design is completed. If the requirements are not met, the photovoltaic panels only need to be redesigned and laid out, which helps to improve design efficiency and save system operation resources.

[0042] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0044] Figure 1 is a schematic flow chart of a segmented design method for a photovoltaic power station according to an embodiment of the present invention;

[0045] Figure 2 is a schematic flow chart of obtaining a three-dimensional model in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0046] Figure 3 is a schematic flow chart of a method for obtaining a survey image in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0047] Figure 4 is a schematic diagram of an aerial photography area and an aerial photography route in a segmented design method for a photovoltaic power station according to an embodiment of the present invention;

[0048] Figure 5 is a schematic flow chart of another way of obtaining a survey image in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0049] Figure 6 is a schematic flow chart of obtaining a three-dimensional model based on a survey image in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0050] Figure 7 is a schematic flow chart of obtaining a preliminary layout scheme in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0051] Figure 8 is a schematic flow chart of preliminary cost verification in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0052] Fig. 9 is a schematic flow chart of performing preliminary cost verification according to first layout information and second layout information in a segmented design method of a photovoltaic power station according to an embodiment of the present invention;

[0053] Fig.10 is a schematic flow chart of electrical connection design in a segmented design method for a photovoltaic power station according to an embodiment of the present invention;

[0054] Fig.11 is a schematic flow chart of a segmented design method for a photovoltaic power station according to another embodiment of the present invention;

[0055] Fig.12 is a schematic block diagram of a computer device according to an embodiment of the present invention;

[0056] Fig.13 is a schematic diagram of a computer-readable storage medium according to an embodiment of the present invention;

[0057] Fig.14 is a schematic diagram of a computer program product according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0059] It should be noted that, in the description of the present invention, each functional module can be a physical module composed of multiple structures, components or electronic components, or a virtual module composed of multiple programs; each functional module can be a module that exists independently of each other, or a module divided according to the function of an integral module. It should be understood by those skilled in the art that, under the premise of being able to implement the technical solution described in the present invention, the composition, implementation and positional relationship of each functional module will not deviate from the technical principle of the present invention no matter how it changes, and therefore should fall within the protection scope of the present invention.

[0060] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (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 equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0061] The flow chart provided by the present embodiment is not intended to indicate that the operation of the method will be performed in any particular order, or that all operations of the method are included in all every case. In addition, the method may include additional operations. Within the scope of the technical thinking provided by the present embodiment method, additional changes may be made to the above method.

[0062] like Figure 1 As shown, in one embodiment, the segmented design method of a photovoltaic power station generally includes:

[0063] Step S101, obtain a 3D model of the photovoltaic power station installation area. Specifically, obtain a 3D model of the area where the photovoltaic power station needs to be built, for example, if it is built on a roof, obtain a 3D model of the house that at least shows the roof.

[0064] Reference Figure 2 As shown, in one embodiment, this step includes:

[0065] Step S201, controlling the drone to take aerial photos of the installation area to obtain a survey image.

[0066] Reference Figure 3 As shown, in one implementation, step S201 includes:

[0067] Step S301, obtaining the address information of the photovoltaic power station installation area. Specifically, the address information may include the geographical coordinates (latitude and longitude) of the installation area, or the administrative area address (administrative division, road house number), etc. That is, the location of the installation area can be determined on the map according to the address information.

[0068] It should be noted that the way to obtain the address information may be to receive the address information input by the user, or may be to receive a point selection signal from the user on a preset plane map, and the location selected by the user is used as the address information.

[0069] Step S302, generating an aerial photography area covering the installation area on the plane map according to the address information. Specifically, the aerial photography area covering the installation area is displayed on the plane map. For example, if the photovoltaic power station needs to be built on the roof of a building, the aerial photography area is a graphic covering the building on the plane map.

[0070] It should be noted that the aerial photography area may be generated by receiving the frame selection information of the user, or may be automatically generated according to the range of the installation area on the plane map.

[0071] Step S303, generating a first aerial photography plan according to the aerial photography area. Specifically, the aerial photography plan includes flight parameters and shooting parameters of the drone, such as flight route, flight speed, shooting interval, shooting angle, and other parameters. The flight route of the first aerial photography plan has route portions located inside and outside the aerial photography area, and at each shooting point located outside the installation area, at least three images of the upper, middle, and lower angles are shot in the direction in which the lens faces the installation area.

[0072] Specifically, the flight route is generally a tortuous route generated based on the aerial photography area, such as Figure 4 As shown in , the quadrilateral area is a schematic diagram of the aerial photography area, and the lines are schematic diagrams of the aerial photography route. Because it is generated according to the aerial photography area, the first aerial photography plan is to shoot above the installation area. If it is a building roof, the aerial photography is performed above the building roof. In addition, during the drone aerial photography process, at each shooting point outside the installation area, that is, in terms of plane, the drone shooting point is outside the plane graphic range of the installation area, at least three photos are taken in the direction of the lens facing the installation area, one camera is tilted upward to shoot, one camera is shot horizontally, and one camera is tilted downward to shoot.

[0073] Step S304, control the drone to perform aerial photography according to the first aerial photography scheme to obtain a first aerial image. After the first aerial photography scheme is generated, the drone can be controlled to perform photography according to the first aerial photography scheme to obtain a plurality of first aerial images.

[0074] Step S305, generating a second aerial photography plan based on the first aerial image, wherein the flight route of the second aerial photography plan surrounds the installation area, and the flight altitude is lower than the flight altitude of the first aerial photography plan, and at each shooting point, at least three angles of images are shot in the direction of the lens toward the installation area, and three angles of images are shot in the direction of the lens away from the installation area.

[0075] Specifically, after the drone takes pictures according to the first aerial photography plan, a first aerial image is obtained, and the general situation of the installation area and the surrounding environment observed from the top can be obtained based on the first aerial image, so that the second aerial photography plan is generated based on the above information. Because the second aerial photography plan surrounds the installation area, after understanding the general situation of the installation area and the surrounding environment based on the first aerial image, it can be known whether there are obstacles around the installation area that hinder flight, so as to determine the route of the second aerial photography plan.

[0076] The second aerial photography route surrounds the installation area and is lower than the flight altitude of the first aerial photography solution. If the installation area is the roof of a building, the flight route of the second aerial photography solution flies around the building and is lower than the shooting altitude of the first aerial photography solution. In addition, at each shooting point, at least three angles of images are taken in the direction of the lens facing the installation area, and three angles of images are taken in the direction of the lens facing away from the installation area. In this way, it can be more clearly determined whether there are objects around the installation area that are higher than the building, so as to better perform subsequent shadow analysis.

[0077] Step S306: Control the drone to perform aerial photography according to the second aerial photography scheme to obtain a second aerial image. The first aerial image and the second aerial image are used as survey images.

[0078] Reference Figure 5 As shown, in another implementation, step S201 includes:

[0079] Step S401, obtain basic information of the installation area. Basic information may include: location information, terrain information, and grid access equipment information. The location information includes the geographic coordinates (latitude and longitude) of the installation area, the administrative area address (administrative divisions, road numbers), and the distance to surrounding markers. The terrain information includes the altitude, slope and slope direction (the degree of inclination and inclination direction of the ground), the type of foundation layout (roof, wall, ground, other supports), landform type, and infrastructure information (foundation surface flatness, foundation surface covering type) of the installation area. The grid access equipment information includes the access transformer capacity, inverter type, PCS specifications, etc.

[0080] The step of obtaining the location information and terrain information may include: reading the location information and terrain information from the location of the installation area selected in the preset map. The map may be a digital map, which is obtained by digitally processing geographic information using computer technology, and in addition to graphics, may also include terrain data, vector data, description information and other related data. In actual application, the method of this embodiment may determine the location of the installation area on the digital map through the selection operation of the surveyor on the map or according to the input selection information, and read the corresponding location information and terrain information. The location information and terrain information are used as positioning information for the survey on the one hand, and can also be used as basic data for the survey on the other hand.

[0081] The step of obtaining the information of the grid-connected equipment includes: sending a query request to the grid management device according to the location information, and obtaining the grid-connected equipment information of the grid management device in response to the query request. The grid management device can find the corresponding grid-connected equipment information according to the grid deployment data of the installation area. The grid-connected equipment information can be used to limit the technical indicators and economic indicators of the photovoltaic system, such as providing the capacity limit parameters of the photovoltaic system, the consumables cost of the photovoltaic equipment to access the grid (cable specifications and quantity, transformer and PCS expansion costs, etc.), and the grid's restriction conditions for absorbing microgrid power transmission (whether to operate reverse transmission to the grid, and the grid electricity price).

[0082] Step S402, control the drone to perform initial survey and photography of the installation area to obtain an initial image. The initial survey and photography can be performed using the drone's default cruise mode, for example, the drone photographs the installation area at a certain height in a preset scanning photography mode (such as reciprocating along a straight line). The initial image obtained is used to obtain a general understanding of the installation area.

[0083] Step S403, set marker points for the initial image, and divide the initial image into objects based on the marker points to at least determine the installation object and estimate the regional area and terrain characteristics of the installation object. The marker points can be obtained by analyzing the initial image, for example, by finding obvious marker points using pixel threshold segmentation, edge detection, regional growth clustering, machine learning model classification, etc. The marker points may include points such as demarcation points, edge points, feature intensity change points, cluster centers or representative points. In addition to the installation objects (installation roofs, installation walls, vacant ground, etc.), the objects obtained by object division may also include the basic objects of the installation objects (installed building objects, walls, supports, etc.). The estimated regional area and terrain characteristics of the installation object are used for the formulation of the aerial photography plan, not the final survey results.

[0084] Step S404, design an aerial photography plan according to the area and terrain characteristics of the installation object. The aerial photography plan includes the flight parameters and shooting parameters of the drone. The flight parameters may include calculating the navigation altitude, speed, route length, flight time and other data. To ensure the accuracy of the measurement, the same target position can be photographed from at least three directions. The aerial photography plan requires that the captured images have a certain degree of overlap to facilitate subsequent stitching. The aerial photography plan can shoot in multiple directions and at multiple heights for the installation object.

[0085] Step S405, control the drone to perform a first survey and shooting around the installation object according to the aerial photography plan to obtain a survey image of the installation object. The survey image of the installation object may include images taken from multiple directions and multiple heights from multiple shooting points. The shooting points can be arranged in an open, unobstructed location with a large shooting range. After the first survey and shooting is completed, the shooting quality of the survey image (such as clarity, overlap, occlusion status, etc.) can be checked. If an image that does not meet the requirements appears, repeat the shooting.

[0086] Step S406, control the drone to perform a second survey and photography of the surrounding environment objects to obtain a survey image of the surrounding environment objects. The second survey and photography photographs the periphery of the installation object to obtain an image reflecting the overall state of the installation area.

[0087] Step S407, stitching the survey image of the installation object and the survey image of the surrounding environment object to obtain a survey image of the installation area. An optional survey image stitching method includes: performing angle matching on the survey image of the installation object and the survey image of the surrounding environment object to find multiple pairs of matching images; performing grayscale histogram equalization processing and geometric distortion elimination on the multiple pairs of matching images to obtain multiple groups of images to be stitched; extracting feature information from the multiple groups of images to be stitched, stitching and fusing the images according to the feature information, and obtaining survey images of the installation area from multiple angles.

[0088] Angle matching can be done by searching for images with similar shooting directions and shooting ranges through the flight records of drones. The matching images found have similar angles, which can reduce the image calculations (including image translation, scaling, and twisting) in the stitching process and improve processing efficiency. Grayscale histogram equalization and geometric distortion elimination can eliminate the problems caused by geometric distortion and color brightness differences in image processing.

[0089] Feature information is extracted from multiple groups of images to be spliced, and an image transformation model can be established based on the matched features, and finally transformation mapping is performed. The transformation mapping of the method of this embodiment first uses point, line and angle features to estimate the homography matrix of the global transformation, and pre-aligns the spliced ​​images; then the image is gridded, and the grid deformation is constrained by the energy function to achieve grid refinement alignment. Since the shooting angle is matched in advance, the complexity of the image transformation model can be reduced. The image alignment process can use a feature-based image registration method. Alignment is performed by adding feature line segments and feature points of the shooting angle, which greatly reduces the amount of calculation. For example, the scale-invariant feature transformation algorithm (ScaleInvariant Feature Transform, referred to as SIFT) can be used to determine the feature points of the image and the angle information of the feature points; for example, the line segment detector (LSD) can be used to extract the straight line characteristics of the image.

[0090] Image stitching and fusion are performed based on feature information to convert each pixel of the transformed image into the same image, and then the image fusion method is used to perform pixel fusion on the transition area of ​​the stitched image to optimize the image stitching quality.

[0091] The survey images of the installation area obtained in the above steps reflect the characteristics of the installation object and the surrounding environment objects from different angles. Compared with the prior art in which surveyors manually set marker points and aerial photography points for the installation area, the method of this embodiment uses three aerial photography to complete the entire survey task, designs the aerial photography plan with the help of the initial images obtained by the initial survey, and automatically completes the aerial photography task, which has a higher accuracy rate and reduces the dependence on the operation of the surveyors.

[0092] Step S202: Generate a 3D model based on the survey image. Figure 6 As shown, this step may include:

[0093] Step S501, discretize the survey image using set grid points to generate point cloud data of the installation area. One discretization method is: discretize using three-dimensional space grid points, and then sample a point in each grid point. Each small grid contains several points, and the point closest to the center point of the grid is taken as the discrete sampling point.

[0094] Step S502, using the point cloud data to construct a surface to obtain a surface model; the data captured by the drone can be processed to obtain sufficient point cloud data. Through surface construction, a surface model in the form of a point cloud can be obtained.

[0095] Step S503, perform object recognition on the survey image to determine the object boundary. The object recognition results include: installation objects (installation roofs, installation walls, vacant ground, etc.), basic objects of installation objects (installed building objects, walls, supports, etc.), surrounding environment objects, etc.

[0096] Step S504: compare the object boundary with the surface model and perform contour segmentation on the surface model.

[0097] Step S505, the surface model after contour segmentation is visualized to obtain a three-dimensional model. The specific visualization process may include: performing object entity processing on the surface model after contour segmentation to obtain contour surfaces of multiple objects; collecting color and pattern features of multiple objects in the survey image; performing appearance processing on the contour surfaces of multiple objects according to the color and pattern features to obtain a three-dimensional model of the installation area.

[0098] The final three-dimensional model of the installation area is similar to the actual visual state of the installation area, which is convenient for the construction owner of the photovoltaic system to intuitively understand the situation of the installation area. After obtaining the three-dimensional model of the installation area, it also includes: performing data statistics on the three-dimensional model to obtain data information of the three-dimensional model; assigning attribute information to multiple objects of the three-dimensional model. The data information of the three-dimensional model includes: coordinates, elevation data, area, length, height, slope, direction, etc., which can be read from the three-dimensional model. Object attribute information includes: project name, object type, etc.

[0099] Those skilled in the art will appreciate that generating a three-dimensional model by utilizing drone survey images can help improve modeling efficiency.

[0100] It should be noted that in some other embodiments, a manually drawn three-dimensional model may also be obtained.

[0101] Continue to refer to Figure 1 As shown in the figure, after obtaining the 3D model of the photovoltaic power station installation area:

[0102] Step S102, designing the layout of photovoltaic panels in the three-dimensional model to obtain a preliminary layout plan.

[0103] Reference Figure 7 As shown, this step includes:

[0104] Step S601, determining the specification parameters of the photovoltaic panel. Specifically, the specification parameters of the photovoltaic panel include parameters such as type (single crystal silicon panel, polycrystalline silicon panel, etc.), size, power, operating voltage and current, etc. This step is to determine the various parameters of the photovoltaic panel.

[0105] It should be noted that various existing photovoltaic panel models may be pre-configured for selection, or various parameters input by the user may be received as design parameters, and the photovoltaic panels may be customized according to the parameters after the subsequent design is completed and implemented.

[0106] Step S602, determining the installation inclination angle of the photovoltaic panel. Specifically, the installation inclination angle of the photovoltaic panel can be calculated according to the inclination angle calculation formula. The inclination angle calculation formula is:

[0107] B=arccos(cos(e)*cos(f)*cos(w)+sin(e)*sin(f))

[0108] Among them, B is the installation inclination angle of the photovoltaic panel, e is the geographical latitude of the installation area, f is the solar declination of the installation area, and w is the solar hour angle of the installation area.

[0109] Step S603, determining the specification parameters of the mounting bracket, such as the material (steel or aluminum alloy, etc.), size, shape, and mounting method (fixed bracket or tracking bracket), etc. of the mounting bracket.

[0110] Step S604, determine the specification parameters of the power distribution equipment. Depending on the layout type, the power distribution equipment includes electrical components such as DC combiner boxes, AC combiner boxes, and inverters. The specification parameters of the power distribution equipment include current, voltage, power, etc. However, this step does not determine the number of power distribution equipment.

[0111] Step S605, laying photovoltaic panels on the three-dimensional model according to specification parameters and installation inclination angles, so that a three-dimensional model of the laid photovoltaic panels can be obtained.

[0112] It should be noted that step S603 and step S604 do not affect the three-dimensional model generated in step S605, and therefore have no contextual relationship with step S605.

[0113] Step S103, preliminary indicators verification is performed on the preliminary layout plan, and the preliminary indicators verification includes shadow analysis and power generation verification. Specifically, after the preliminary layout plan is completed, the laying conditions and specification parameters of the photovoltaic panels have been determined, so shadow analysis and corresponding power generation verification can be easily performed.

[0114] Step S104, determine whether the preliminary index verification meets the preset target requirements, if so, execute step S105, if not, return to execute step S102. That is, determine whether the indicators of the preliminary layout plan meet the various design index requirements of the photovoltaic power station to be built. If not, re-layout the photovoltaic panels, that is, re-select Figure 7 The various specifications in.

[0115] Step S105, electrical connection design is performed based on the preliminary layout plan to obtain a plan to be used. If the preliminary indicators of the preliminary layout plan meet the preset target requirements, electrical connection design is performed, that is, the layout and connection of the distribution device and cables are performed.

[0116] In the existing technology, the design of photovoltaic power stations usually conducts the final verification of various indicators after all designs are completed. If the requirements are not met, it is necessary to redesign from the beginning, which affects the design efficiency. In fact, for some indicators of photovoltaic power stations, it is not necessary to complete all designs before verification, such as shadow analysis, power generation verification, etc. These can be verified only after the specifications of the photovoltaic panels are determined.

[0117] Therefore, in the scheme of this embodiment, after the photovoltaic panel layout design is performed, a preliminary layout plan is obtained to perform preliminary indicator verification. When the preliminary indicator verification meets the preset target requirements, the electrical connection design is performed on the basis of the preliminary layout plan. If the preliminary indicator verification does not meet the design requirements, the photovoltaic panel layout design is performed again. In other words, the photovoltaic power station is designed in sections. After the first section of the photovoltaic panel layout design, if the preliminary indicator verification does not meet the target requirements, the electrical connection design of the second section will not be performed. Compared with the calculation of various indicators after the photovoltaic power station is fully designed, the sectioned design of this application can timely verify some indicators that can be clearly determined after the photovoltaic panel layout design is completed. If the requirements are not met, the photovoltaic panels only need to be redesigned and laid out, which helps to improve design efficiency and save system operation resources.

[0118] like Figure 8 As shown, in some embodiments, the preliminary indicator verification also includes preliminary cost verification, and the steps of conducting preliminary cost verification on the preliminary layout plan include:

[0119] Step S701, obtaining first layout information of the preliminary layout plan, the first layout information including the total area of ​​photovoltaic panels, the inclination angle of photovoltaic panels and the number of photovoltaic panels of the preliminary layout plan. Specifically, after completing the preliminary layout plan, the first layout information can be directly obtained from the three-dimensional model.

[0120] Step S702, obtaining second layout information corresponding to the preset template layout, the second layout information including the total area of ​​photovoltaic panels, the inclination angle of photovoltaic panels and the number of photovoltaic panels of the preset template layout. The preset template layout is a preset layout scheme for determining the cost. Specifically, the system pre-stores the preset template layout that has completed all designs, and obtains the second layout information of the preset template layout when performing preliminary cost verification.

[0121] It should be noted that the system can store multiple different types of preset template layouts, such as different types of preset template layouts divided according to roof forms. When performing preliminary cost verification, the system automatically obtains the preset target layout of the same type as the preliminary layout plan.

[0122] Step S703 , performing a preliminary cost check based on the ratio of the first layout information to the second layout information and the cost of the preset template layout.

[0123] like Fig. 9 As shown, in one embodiment, this step includes:

[0124] Step S801, taking the modulus of the vector formed by each information in the first layout information, and recording it as the first modulus. Specifically, each information of the first layout information is used as the value of each dimension of the vector to form a vector data. Then, taking the modulus of the vector data.

[0125] Step S802, taking the modulus of the vector formed by each information in the second layout information, and recording it as the second modulus. Specifically, each information of the second layout information is used as the value of each dimension of the vector to form a vector data. Then, taking the modulus of the vector data.

[0126] Step S803, determine whether the product of the cost of the preset template layout and the ratio of the first modulus to the second modulus meets the preset target cost, that is, whether it is less than or equal to the preset target cost. If so, execute step S804, otherwise, step S805.

[0127] Step S804: determine whether the cost verification meets the requirements.

[0128] Step S805: determine whether the cost verification does not meet the requirements.

[0129] Specifically, the first modulus value can represent the sum of all factors affecting the cost of the preliminary layout plan, the second modulus value can represent the sum of all factors affecting the cost of the preset template layout, and the ratio of the first modulus value to the second modulus value can approximately represent the ratio of the sum of all factors affecting the cost of the preliminary layout plan and the preset template layout. The ratio of the first modulus value to the second modulus value multiplied by the cost of the preset template layout can approximate the cost of the preliminary layout plan.

[0130] Although the preliminary layout plan does not determine the number and location of distribution equipment and the connection of cables, because the cost of photovoltaic panels actually accounts for a large part of the total cost of a photovoltaic power station, the approximate final cost can be estimated from the layout of photovoltaic panels in the preliminary layout plan, thereby completing a preliminary cost verification with higher accuracy.

[0131] Therefore, in this embodiment, after completing the preliminary layout plan, a preliminary cost verification is performed on the preliminary layout plan, and the cost of the preliminary layout plan is obtained by multiplying the ratio of the first modulus of the vector composed of all factors affecting the cost of the preliminary layout plan and the second modulus of the vector composed of all factors affecting the cost of the preset template layout by the cost of the preset template layout. This can quickly and accurately complete the cost verification of the preliminary layout plan, thereby increasing the probability that the photovoltaic power station after the second stage design meets the requirements, further improving the design efficiency, and reducing the situation where other indicators after the first stage design are qualified but have to be redesigned from scratch because the final cost does not meet the requirements.

[0132] It should be noted that, in some other embodiments, the ratio of the photovoltaic panel cost to the final cost of a photovoltaic power station may be pre-set, and the step of conducting preliminary cost verification on the preliminary layout plan may also include directly determining whether the cost of the preliminary layout plan is less than or equal to the product of the preset target cost and the preset ratio value. If so, it is determined that the cost verification meets the requirements; if not, it is determined that the cost verification does not meet the requirements.

[0133] like Fig.10 As shown, in one embodiment, the steps of performing electrical connection design based on the preliminary layout scheme include:

[0134] Step S901, divide the photovoltaic panels of the preliminary layout plan into photovoltaic groups, where a photovoltaic group is a plurality of photovoltaic panels connected to the same first power distribution device. The number of photovoltaic groups to be divided is determined according to the specification parameters of the photovoltaic panels and the specification parameters of the first power distribution device.

[0135] Step S902, determine the number of first power distribution devices and the number of second power distribution devices according to the number of photovoltaic groups. Each photovoltaic group is connected to a first power distribution device, and the number of photovoltaic groups is the number of first power distribution devices. Multiple first power distribution devices are connected to a second power distribution device, and the number of second power distribution devices is determined according to the specification parameters of the selected second power distribution device.

[0136] Step S903: Determine the installation position of the first power distribution device of each photovoltaic group relative to the photovoltaic group. The determination is performed according to the design requirements of the prior art.

[0137] Step S904: determining the corresponding installation position of the second power distribution device according to the installation positions of all first power distribution devices connected to the same second power distribution device.

[0138] Specifically, this step includes constructing a closed graph with all first power distribution devices as vertices if the number of first power distribution devices connected to the same second power distribution device is greater than two; determining the position with the smallest sum of distances to all vertices in the constructed closed graph as the installation position of the second power distribution device. If the installation position is not in the valid area, select the position closest to the installation position in the valid area as the new installation position. By constructing a closed graph with the position of the first power distribution device as the vertex, it is easy to determine the position with the smallest sum of distances to all vertices, obtain the installation position of the second power distribution device, and improve design efficiency.

[0139] In addition, the effective area is the area within the installation area where the photovoltaic power station can actually be installed. For example, only the flat area without protrusions on the roof of a building can be used to install a photovoltaic power station. In some cases, the installation area of ​​the photovoltaic power station may be an irregular area, such as a concave shape. In this case, the position with the smallest total distance to all vertices may not be within the effective area. At this time, the position closest to the installation position is selected in the effective area as the new installation position to ensure that the total distance from the installation position to all vertices is relatively small.

[0140] Step S905 , performing cable connection, specifically, performing cable connection between the photovoltaic panels in each photovoltaic group and the corresponding first power distribution equipment, and performing cable connection between each first power distribution equipment and the corresponding second power distribution equipment.

[0141] According to different layout types of the photovoltaic power station, the first power distribution equipment and the second power distribution equipment may be a DC combiner box and an inverter, or an inverter and an AC combiner box.

[0142] like Fig.11 As shown, in one embodiment, the segmented design method of a photovoltaic power station generally includes:

[0143] Step S1001, obtaining a three-dimensional model of the photovoltaic power station installation area.

[0144] Step S1002, designing the layout of photovoltaic panels in the three-dimensional model to obtain a preliminary layout plan.

[0145] Step S1003, performing preliminary indicator verification on the preliminary layout plan, the preliminary indicator verification includes shadow analysis, power generation verification and preliminary cost verification.

[0146] Step S1004, determine whether the preliminary indicator verification meets the preset target requirements, if so, execute step S1005, if not, return to execute step S1002.

[0147] Step S1005, performing electrical connection design based on the preliminary layout plan to obtain a plan to be used.

[0148] Step S1006, determine whether the cost of the solution to be used meets the preset target requirements, that is, whether the cost of the solution to be used is less than or equal to the preset target cost. If so, execute step S1007, if not, return to execute step S1002. Specifically, after the entire design of the photovoltaic power station is completed, the cost has been determined, and the cost is calculated again. If it meets the requirements, the subsequent photovoltaic power station construction project can be carried out according to the design plan.

[0149] Step S1007, constructing a photovoltaic power station according to the scheme to be used.

[0150] In the solution of this embodiment, by performing segmented design on the photovoltaic power station, the workload of repeated design in the photovoltaic power station design process can be reduced, which helps to improve design efficiency and save system operation resources.

[0151] This embodiment also provides a computer device and a computer-readable storage medium. Fig.12 is a schematic diagram of a computer device 10 according to one embodiment of the present invention. Fig.13 is a schematic diagram of a computer-readable storage medium 20 according to one embodiment of the present invention.

[0152] The computer device 10 may include a memory 110, a processor 120, and a computer executable program 11 stored in the memory 110 and running on the processor 120, and the processor 120 implements the segmented design method of the photovoltaic power station of any of the above embodiments when executing the computer executable program 11.

[0153] The computer-readable storage medium 20 stores a computer-executable program 11 thereon. When the computer-executable program 11 is executed by a processor, the segmented design method for a photovoltaic power station according to any of the above embodiments can be implemented.

[0154] This embodiment also provides a computer program product. Fig.14 3 is a schematic diagram of a computer program product 30 according to an embodiment of the present invention. The computer program product 30 includes a computer executable program 11, and when the computer executable program 11 is executed by a processor 120, any of the above-mentioned segmented design methods for a photovoltaic power station can be implemented.

[0155] Specifically, the computer executable program 11 for performing the operations of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, computer instructions, computer-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0156] For the purpose of the description of the present embodiment, the computer-readable storage medium 20 can be any device that can contain, store, communicate, propagate or transmit a program for use with an instruction execution system, device or equipment or in conjunction with these instruction execution systems, devices or equipment. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion (electronic device) with one or more wirings, a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and editable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable storage medium 20 can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting or processing in other suitable ways as necessary, and then stored in a computer memory.

[0157] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.

[0158] The computer device 10 may be, for example, a server, a desktop computer, a notebook computer, a tablet computer, or a smart phone. In some examples, the computer device 10 may be a cloud acquisition node. The computer device 10 may be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. Typically, a program module may include routines, programs, object programs, components, logic, data structures, etc. that perform specific tasks or implement specific abstract data types. The computer device 10 may be implemented in a distributed cloud acquisition environment where remote processing devices linked via a communication network perform tasks. In a distributed cloud acquisition environment, program modules may be located on a local or remote acquisition system storage medium including a storage device.

[0159] The computer device 10 may include a processor 120 adapted to execute stored instructions, and a memory 110 that provides temporary storage space for the operation of the instructions during operation. The processor 120 may be a single-core processor, a multi-core processor, an acquisition cluster, or any number of other configurations. The memory 110 may include random access memory (RAM), read-only memory, flash memory, or any other suitable storage system.

[0160] The processor 120 may be connected to an I / O interface (input / output interface) suitable for connecting the computer device 10 to one or more I / O devices (input / output devices) via a system interconnect (e.g., PCI, PCI-Express, etc.). The I / O devices may include, for example, a keyboard and a pointing device, wherein the pointing device may include a touch pad or a touch screen, etc. The I / O devices may be built-in components of the computer device 10, or may be devices externally connected to an acquisition device.

[0161] Processor 120 can also be linked to a display interface suitable for connecting computer device 10 to a display device through a system interconnection. Display device can include a display screen as a built-in component of computer device 10. Display device can also include a computer monitor, a television or a projector, etc., which are externally connected to computer device 10. In addition, a network interface controller (NIC) can be suitable for connecting computer device 10 to a network through a system interconnection. In some embodiments, NIC can use any suitable interface or protocol (such as an Internet small computer system interface, etc.) to transmit data. The network can be a cellular network, a radio network, a wide area network (WAN), a local area network (LAN) or the Internet, etc. A remote device can be connected to a computer device through a network.

[0162] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A segmented design method for a photovoltaic power station, comprising: Obtain a three-dimensional model of the photovoltaic power station installation area; Designing the layout of photovoltaic panels in the three-dimensional model to obtain a preliminary layout plan; Conducting preliminary indicator verification on the preliminary layout plan, wherein the preliminary indicator verification includes shadow analysis and power generation verification; Determine whether the preliminary index verification meets the preset target requirements. If so, perform electrical connection design based on the preliminary layout plan to obtain a plan to be used. If not, re-execute the step of performing photovoltaic panel layout design on the three-dimensional model.

2. The segmented design method of a photovoltaic power station according to claim 1, wherein: The preliminary indicator verification also includes preliminary cost verification. The steps of conducting preliminary cost verification on the preliminary layout plan include: Acquire first layout information of the preliminary layout scheme, wherein the first layout information includes a total area occupied by photovoltaic panels, an inclination angle of photovoltaic panels, and a number of photovoltaic panels of the preliminary layout scheme; Acquire second layout information corresponding to a preset template layout, the second layout information including a total area occupied by photovoltaic panels, an inclination angle of photovoltaic panels, and a number of photovoltaic panels of the preset template layout, the preset template layout being a preset layout scheme with a determined cost; The preliminary cost verification is performed according to a ratio of the first layout information to the second layout information and a cost of the preset template layout.

3. The segmented design method of a photovoltaic power station according to claim 2, wherein: The step of performing the preliminary cost verification according to the ratio of the first layout information to the second layout information and the cost of the preset template layout comprises: Taking the modulus of the vector formed by each information in the first layout information, and recording it as the first modulus; Taking the modulus of the vector formed by each information in the second layout information, and recording it as the second modulus; Determine whether the product of the cost of the preset template layout and the ratio of the first module value to the second module value meets the preset target cost. If so, determine that the cost verification meets the requirements; if not, determine that the cost verification does not meet the requirements.

4. The segmented design method of a photovoltaic power station according to claim 1, wherein: The step of designing electrical connections based on the preliminary layout scheme includes: Dividing the photovoltaic panels of the preliminary layout plan into photovoltaic groups, wherein the photovoltaic group is a plurality of photovoltaic panels connected to the same first power distribution device; Determine the number of first power distribution devices and the number of second power distribution devices according to the number of photovoltaic groups; Determining an installation position of a first power distribution device of each photovoltaic group relative to the photovoltaic group; Determine the corresponding installation position of the second power distribution device according to the installation positions of all first power distribution devices connected to the same second power distribution device; Connecting the photovoltaic panels in each photovoltaic group to the corresponding first power distribution equipment through cables, and connecting each first power distribution equipment to the corresponding second power distribution equipment through cables; The first power distribution device is used to connect multiple photovoltaic panels, and the second power distribution device is used to connect multiple first power distribution devices.

5. The segmented design method of a photovoltaic power station according to claim 4, wherein: The step of determining the corresponding installation position of the second power distribution equipment according to the installation positions of all first power distribution equipment connected to the same second power distribution equipment comprises: If the number of first power distribution devices connected to the same second power distribution device is greater than two, a closed graph is constructed with all the first power distribution devices as vertices; A position in the constructed closed graph at which the sum of distances to all vertices is the smallest is determined as the installation position of the second power distribution device.

6. The segmented design method of a photovoltaic power station according to claim 5, wherein: After the step of determining the position with the smallest sum of distances to all vertices in the constructed closed graph as the installation position of the second power distribution device, the method further comprises: If the installation position is not in the effective area, a position closest to the installation position is selected in the effective area as a new installation position.

7. The segmented design method of a photovoltaic power station according to claim 1, wherein: The steps of designing electrical connections based on the preliminary layout scheme include: Determine whether the cost of the scheme to be used meets the preset target requirements. If so, construct the photovoltaic power station according to the scheme to be used. If not, re-execute the step of designing electrical connections based on the preliminary layout plan.

8. The segmented design method of a photovoltaic power station according to claim 1, wherein: The step of obtaining the three-dimensional model of the photovoltaic power station installation area includes: Controlling the UAV to take aerial photos of the installation area to obtain a survey image; The three-dimensional model is generated according to the survey image.

9. The segmented design method of a photovoltaic power station according to claim 1, wherein: The step of designing the photovoltaic panel layout in the three-dimensional model comprises: Determine the specifications of the photovoltaic panels; Determine the installation inclination angle of the photovoltaic panels; The photovoltaic panels are laid on the three-dimensional model according to the specification parameters of the photovoltaic panels and the installation inclination angle.

10. A computer device, comprising a memory, a processor, and a computer executable program stored in the memory and running on the processor, wherein the processor implements the segmented design method of a photovoltaic power station according to any one of claims 1 to 9 when executing the computer executable program.

11. A computer-readable storage medium having a computer-executable program stored thereon, wherein the computer-executable program, when executed by a processor, implements the segmented design method for a photovoltaic power station according to any one of claims 1 to 9.

12. A computer program product, comprising a computer executable program, wherein when the computer executable program is executed by a processor, the segmented design method for a photovoltaic power station according to any one of claims 1 to 9 is implemented.

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