Photovoltaic power plant systems and their layout methods, layout devices and storage media

Abstract

This invention discloses a photovoltaic power station system and its layout method, layout device, and storage medium. The method includes: acquiring a parameter combination set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio / DC-side capacity parameters; optimizing the parameter combination set according to preset constraints to obtain a target parameter combination set; determining the power generation and material consumption of each parameter combination in the target parameter combination set; determining the evaluation index of each parameter combination based on its power generation and material consumption, and determining the target parameter combination based on the evaluation index of each parameter combination; and laying out the photovoltaic power station system according to the target parameter combination. The optimization method of this invention can improve optimization accuracy and computational efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power plant technology, and in particular to a layout method for a photovoltaic power plant system, a layout device for a photovoltaic power plant system, a computer-readable storage medium, and a photovoltaic power plant system. Background Technology

[0002] Solar energy is the second fastest-growing energy source today. Solar photovoltaic power generation has grown at an average rate of 15% over the past 15 years, and since the late 1990s, it has grown at a rate of over 30%.

[0003] The design of photovoltaic (PV) systems directly impacts the effective utilization of land and sunlight, as well as investment returns. Early on, due to technological limitations, PV system layout was based on a single factor (parameter) for optimization, selecting the option with the highest power generation. Later research revealed that using the lowest levelized cost of electricity (LCOE) as the standard for system optimization is more appropriate. However, this involves material usage, requiring a suitable function mapping model; otherwise, the layout results will be inaccurate. Furthermore, single-factor optimization lacks sufficient evaluation dimensions, leading to multi-factor coupling within the system. In summary, current layout methods suffer from problems such as relying on a single evaluation factor, lacking a function model relating multiple factors to material usage, failing to account for material usage variations, lacking material usage coupling calculations, and resulting in significant deviations in optimization results. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to propose a layout method for a photovoltaic power station system. This method uses the power generation and material consumption of each parameter combination as evaluation indicators, determines a target parameter combination based on these evaluation indicators, and finally lays out the photovoltaic power station system according to the target parameter combination. This approach improves layout accuracy and computational efficiency.

[0005] The second objective of this invention is to provide a layout device for a photovoltaic power station system.

[0006] A third objective of this invention is to provide a computer-readable storage medium.

[0007] The fourth objective of this invention is to provide a photovoltaic power station system.

[0008] To achieve the above objectives, a first aspect of the present invention proposes a layout method for a photovoltaic power station system, comprising: obtaining a parameter combination set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio parameters / DC-side capacity parameters, wherein the spacing parameters, angle parameters, height parameters, and capacity ratio parameters / DC-side capacity parameters each have multiple different values, and the number of values ​​for each parameter may be the same or different; optimizing the parameter combination set according to preset constraints to obtain a target parameter combination set; determining the power generation and material consumption of each parameter combination in the target parameter combination set according to the target parameter combination set; determining the evaluation index of each parameter combination according to the power generation and material consumption of each parameter combination, and determining the target parameter combination according to the evaluation index of each parameter combination; and laying out the photovoltaic power station system according to the target parameter combination.

[0009] According to the photovoltaic power station system layout method of this invention, a parameter combination set is first obtained, consisting of the spacing parameters between adjacent supports, the angle parameters between the photovoltaic modules and the horizontal plane of the supports, the height parameters between the photovoltaic modules and the ground, and the capacity ratio / DC-side capacity parameters. Each parameter has multiple different values, and the number of values ​​for each parameter may be the same or different. Then, the parameter combination set is optimized according to preset constraints to obtain a target parameter combination set. Next, the power generation and material consumption of each parameter combination in the target parameter combination set are determined. Finally, the evaluation index of each parameter combination is determined based on its power generation and material consumption, and the target parameter combination is determined based on the evaluation index of each parameter combination. The photovoltaic power station system is then laid out according to the target parameter combination. Therefore, this method can improve layout accuracy and computational efficiency.

[0010] In addition, the layout method of the photovoltaic power station system according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, when using the capacity ratio parameter, the parameter combination set is optimized according to the constraints to obtain a target parameter combination set, including: obtaining the initial spacing parameter, the initial capacity ratio, and the initial land area; obtaining the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio in each parameter combination; determining the land area of ​​each parameter combination based on the initial land area, the spacing change value, and the capacity ratio change value; and deleting the parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set.

[0012] According to an embodiment of the present invention, when using DC side capacity parameters, the parameter combination set is optimized according to constraints to obtain a target parameter combination set, including: obtaining initial spacing parameters and initial land area; obtaining the spacing change value between the spacing parameter and the initial spacing parameter in each parameter combination; determining the land area of ​​each parameter combination based on the initial land area and the spacing change value; and deleting parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set.

[0013] According to an embodiment of the present invention, when the support is a flat single-axis tracking support, after obtaining the target parameter combination set, the layout method of the photovoltaic power station system further includes: obtaining the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module; determining the actual maximum tracking tilt angle based on the vertical height and the limiting angle of the flat single-axis tracking support; updating the height parameter in the corresponding combination based on the angle parameter of each parameter combination in the target parameter combination set and the actual maximum tracking angle, so as to obtain the final target parameter combination set.

[0014] According to one embodiment of the present invention, determining the power generation of each parameter combination in the target parameter combination set based on the target parameter combination set includes: acquiring irradiance data and the latitude and longitude of the photovoltaic power station system; using the irradiance data, latitude and longitude, spacing parameters, angle parameters, height parameters, and capacity ratio parameters / DC side capacity parameters as inputs to the power generation model to obtain the power generation of each parameter combination.

[0015] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set includes: obtaining a first pile foundation height change value when the angle parameter changes relative to the initial angle; obtaining a second pile foundation height change value when the height parameter changes relative to the initial height; determining the pile foundation height change value based on the first pile foundation height change value and the second pile foundation height change value; and determining the per-watt pile foundation usage based on the ratio of the product of the pile foundation height change value and the number of piles to the DC capacity of the photovoltaic module.

[0016] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set includes: determining the steel usage of a single array bracket in the photovoltaic module based on the angle parameter; and determining the steel usage per watt based on the ratio of the steel usage of a single array bracket to the DC capacity of the photovoltaic module.

[0017] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set includes: obtaining the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio; determining the land area based on the initial land area, the spacing change value, and the capacity ratio change value; and determining the land area per watt based on the ratio of the land area to the DC capacity of the photovoltaic module.

[0018] According to one embodiment of the present invention, when using the capacity ratio parameter, the material usage of each parameter combination in the target parameter combination set is determined according to the target parameter combination set, including: calculating the total DC-side installed capacity based on the rated capacity of the inverter and the capacity ratio parameter; determining the number of combiner boxes based on the total DC-side installed capacity, the power of the photovoltaic modules, the number of strings in the photovoltaic modules, and the number of strings that the combiner box can connect to; and determining the number of combiner boxes per watt based on the ratio of the number of combiner boxes to the DC capacity of the photovoltaic modules.

[0019] According to one embodiment of the present invention, when using DC-side capacity parameters, the material usage of each parameter combination in the target parameter combination set is determined according to the target parameter combination set, including: determining the number of string inverters based on the DC capacity of the photovoltaic module, the power of the photovoltaic module, and the number of string inverters; and determining the number of single-watt string inverters based on the ratio of the number of string inverters to the DC capacity of the photovoltaic module.

[0020] According to one embodiment of the present invention, determining the target parameter combination based on the evaluation index of each parameter combination includes: taking the smallest value among all the evaluation indices of the parameter combinations as the target evaluation index; and taking the parameter combination corresponding to the target evaluation index as the target parameter combination.

[0021] To achieve the above objectives, a second aspect of the present invention provides a layout device for a photovoltaic power station system, comprising: an acquisition module for acquiring a parameter combination set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio parameters / DC-side capacity parameters, wherein the spacing parameters, angle parameters, height parameters, and capacity ratio parameters / DC-side capacity parameters are all multiple different values, and the number of values ​​for each parameter may be the same or different; an optimization module for optimizing the parameter combination set according to preset constraints to obtain a target parameter combination set; a first determination module for determining the power generation and material consumption of each parameter combination in the target parameter combination set according to the target parameter combination set; and a second determination module for determining the evaluation index of each parameter combination based on the power generation and material consumption of each parameter combination, determining the target parameter combination based on the evaluation index of each parameter combination, and laying out the photovoltaic power station system according to the target parameter combination.

[0022] According to an embodiment of the present invention, a layout device for a photovoltaic power station system includes an acquisition module for acquiring a parameter set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio / DC-side capacity parameters. Each parameter has multiple different values, and the number of values ​​for each parameter may be the same or different. An optimization module optimizes the parameter set according to preset constraints to obtain a target parameter set. A first determination module determines the power generation and material consumption of each parameter combination in the target parameter set. A second determination module determines the evaluation index of each parameter combination based on its power generation and material consumption, determines the target parameter combination based on its evaluation index, and lays out the photovoltaic power station system according to the target parameter set. Therefore, this device can improve layout accuracy and computational efficiency.

[0023] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium storing a layout program for a photovoltaic power station system, which, when executed by a processor, implements the above-described layout method for the photovoltaic power station system.

[0024] The computer-readable storage medium according to embodiments of the present invention, by implementing the above-described layout method for a photovoltaic power station system during execution, can improve layout accuracy and computational efficiency.

[0025] To achieve the above objectives, a photovoltaic power station system is proposed in the fourth aspect of the present invention, including a memory, a processor, and a layout program for the photovoltaic power station system stored in the memory and executable on the processor. When the processor executes the layout program for the photovoltaic power station system, it implements the above-mentioned layout method for the photovoltaic power station system.

[0026] According to the photovoltaic power station system of the present invention, by implementing the above-described layout method of the photovoltaic power station system, the layout accuracy and calculation efficiency can be improved.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] Figure 1 A flowchart illustrating a layout method for a photovoltaic power station system according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the change in pile foundation height according to an embodiment of the present invention;

[0030] Figure 3This is a schematic diagram illustrating the change in the tilt angle of the support according to an embodiment of the present invention;

[0031] Figure 4 A flowchart illustrating a layout method for a photovoltaic power station system according to a specific example of the present invention;

[0032] Figure 5 This is a block diagram of the layout device of a photovoltaic power station system according to an embodiment of the present invention;

[0033] Figure 6 This is a block diagram of a photovoltaic power station system according to an embodiment of the present invention. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] The following description, with reference to the accompanying drawings, outlines the layout method, layout apparatus, computer-readable storage medium, and photovoltaic power station system of the present invention.

[0036] Figure 1 This is a flowchart of a layout method for a photovoltaic power station system according to an embodiment of the present invention.

[0037] like Figure 1 As shown, the layout method of the photovoltaic power station system in this embodiment of the invention may include the following steps:

[0038] S1. Obtain a set of parameters consisting of the spacing parameters between adjacent supports, the angle parameters between the photovoltaic modules and the horizontal plane of the supports, the height parameters between the photovoltaic modules and the ground, and the capacity ratio / DC side capacity parameters. Among them, the spacing parameters, angle parameters, height parameters, and capacity ratio / DC side capacity parameters all have multiple different values, and the number of values ​​for each parameter may be the same or different.

[0039] Specifically, firstly, the distance L between adjacent supports is obtained as the spacing parameter between adjacent supports; the angle α between the photovoltaic module and the horizontal plane of the support is obtained as the angle parameter between the photovoltaic module and the horizontal plane of the support; the distance h between the lower edge of the photovoltaic module and the ground is obtained as the height parameter between the photovoltaic module and the ground; and the capacity ratio C is obtained as the capacity ratio parameter, or the DC-side capacity E is obtained as the DC-side capacity parameter. A parameter combination set is constructed, which may include the spacing parameter between adjacent supports, the angle parameter between the photovoltaic module and the horizontal plane of the support, the height parameter between the photovoltaic module and the ground, and the capacity ratio / DC-side capacity parameter. Each parameter has multiple different values, and the number of values ​​for each parameter may be the same or different. For example, there may be n1 spacing parameters, n2 angle parameters, n3 height parameters, n4 capacity ratio parameters, or n4 DC-side capacity parameters. These parameters can be combined arbitrarily, thus the total number of parameter combinations in the obtained parameter combination set is n1*n2*n3*n4.

[0040] S2, optimize the parameter combination set according to the preset constraints to obtain the target parameter combination set.

[0041] According to one embodiment of the present invention, when using the capacity ratio parameter, the parameter combination set is optimized according to constraints to obtain a target parameter combination set, including: obtaining the initial spacing parameter, the initial capacity ratio, and the initial land area; obtaining the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio in each parameter combination; determining the land area of ​​each parameter combination based on the initial land area, the spacing change value, and the capacity ratio change value; and deleting parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set. The preset area threshold can be determined according to actual conditions.

[0042] Specifically, after obtaining multiple sets of parameter combinations, these sets can be optimized to obtain the target set of parameter combinations. For example, when using the capacity ratio parameter, first obtain the initial spacing parameter L0, the initial capacity ratio C0, and the initial land area S0. Then, in the multiple parameter combinations, obtain the spacing change value (L / L0) between the spacing parameter L and the initial spacing parameter L0, and the capacity ratio change value (C / C0) between the capacity ratio C and the initial capacity ratio C0. After obtaining the spacing change value and the capacity ratio change value, the land area for each parameter combination can be determined by multiplying the initial land area S0 with the spacing change value (L / L0) and the capacity ratio change value (C / C0). After calculating the land area for each parameter combination, the land area is compared with a preset area threshold. If the land area is greater than the preset area threshold, it means that the area of ​​the current parameter combination is too large and cannot be put into normal use. Therefore, the parameter combination with a land area greater than the preset area threshold can be deleted, and the parameter combination with a land area less than the preset area threshold can be kept as the target parameter combination set.

[0043] According to another embodiment of the present invention, when using DC side capacity parameters, the parameter combination set is optimized according to constraints to obtain a target parameter combination set, including: obtaining initial spacing parameters and initial land area; obtaining the spacing change value between the spacing parameter and the initial spacing parameter in each parameter combination; determining the land area of ​​each parameter combination based on the initial land area and the spacing change value; deleting parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set.

[0044] Specifically, after obtaining multiple parameter combination sets, these sets can be optimized to obtain a target parameter combination set. For example, when using DC-side capacity parameters, the initial spacing parameter L0 and initial land area S0 are first obtained. Then, in the multiple parameter combination sets, the spacing change value (L / L0) between the spacing parameter L and the initial spacing parameter L0 in each parameter combination is obtained. After obtaining the spacing change value, the land area for each parameter combination can be determined by multiplying the initial land area S0 by the spacing change value (L / L0). After calculating the land area for each parameter combination, the land area is compared with a preset area threshold. When the land area is greater than the preset area threshold, it indicates that the area of ​​the current parameter combination is too large and cannot be put into normal use. Therefore, parameter combinations with land areas greater than the preset area threshold can be deleted, and parameter combinations with land areas less than the preset area threshold can be retained as the target parameter combination set.

[0045] Furthermore, according to an embodiment of the present invention, when the support is a flat single-axis tracking support, after obtaining the target parameter combination set, the layout method of the photovoltaic power station system further includes: obtaining the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module; determining the actual maximum tracking tilt angle based on the vertical height and the limiting angle of the flat single-axis tracking support; updating the height parameter in the corresponding combination based on the angle parameter of each parameter combination in the target parameter combination set and the actual maximum tracking angle, so as to obtain the final target parameter combination set.

[0046] Specifically, tracking brackets include horizontal single-axis, inclined single-axis, and horizontal-inclined single-axis types. Horizontal single-axis tracking brackets track the sun's movement in real time. The conventional tracking algorithm uses the tilt angle corresponding to the minimum angle of incidence of sunlight onto the inclined surface as the optimal tracking angle, and the largest of all optimal tracking angles is taken as the maximum tracking angle. Therefore, to calculate the maximum tracking angle, it is necessary to work backward from the minimum angle of incidence to deduce the optimal tracking angle, and then select the maximum tracking angle. In addition, tracking brackets also have limit angles; for example, a certain manufacturer's horizontal single-axis bracket can only track up to 45° or 60°. Beyond that, it will remain at 45° or 60°. When the support is a flat single-axis tracking support, after determining the target parameter combination set according to the land area and the preset area threshold, the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module can also be obtained. That is, in the following formula (1), x1 and x2 are two solutions of a quadratic equation. The quadratic equation is to find the value of the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module. Since positive and negative only represent direction in practical applications, it is only necessary to use the abs(x1) and abs(x2) functions in the following formula (1) to find the absolute values ​​of x1 and x2, and select the smallest value from the absolute values ​​as the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module, that is, min(abs(x1),abs(x2)) in formula (1). After obtaining the vertical height, the actual maximum tracking tilt angle α can be determined based on the vertical height and the limiting angle of the single-axis tracking bracket. That is, the minimum value of the angle value obtained by the vertical height through the arcsine function and the limiting angle of the single-axis tracking bracket is taken as the actual maximum tracking tilt angle α, i.e., according to the formula (1), min(arcsinx,α) max ), α max The maximum value of the limiting angle. Therefore, the axis height of the single axis, i.e., the height H between the top of the photovoltaic module's axis and the ground, can be determined based on the angle parameters of each parameter combination in the target parameter combination set and the actual maximum tracking angle. The height parameters in the corresponding combinations are then updated, and the distance h between the lower edge of the photovoltaic module and the ground is updated to the height H between the top of the photovoltaic module's axis and the ground, thus obtaining the final target parameter combination set. The height H of the top of the photovoltaic module's axis from the ground can be determined using the last set of formulas in formula (1). The height parameter is calculated as follows:

[0047]

[0048] x = min(abs(x1), abs(x2))

[0049] α = min(arcsinx, α) max )

[0050]

[0051] Where x1 and x2 are two solutions to the quadratic equation, representing the vertical height between the bottom edge of the photovoltaic module and the top of its central axis; x is the minimum vertical height; α is the actual maximum tracking tilt angle; z is the solar azimuth angle; β is the solar altitude angle; H is the pile foundation height (the height between the top of the photovoltaic module's central axis and the ground); and h... pf1 h is the initial value of the lower edge height of the photovoltaic module. upf L represents the initial length of the pile foundation, N is the number of rows of components installed in the array, and λ represents the ratio of the increase (or decrease) in length below the pile foundation surface to the increase (or decrease) in length above the ground surface, typically taken as 0.5. mod This refers to the length of the photovoltaic module.

[0052] S3, determine the power generation and material consumption of each parameter combination in the target parameter combination set based on the target parameter combination set.

[0053] According to one embodiment of the present invention, determining the power generation of each parameter combination in the target parameter combination set based on the target parameter combination set includes: acquiring irradiance data and the latitude and longitude of the photovoltaic power station system; using the irradiance data, latitude and longitude, spacing parameters, angle parameters, height parameters, and capacity ratio parameters / DC side capacity parameters as inputs to the power generation model to obtain the power generation of each parameter combination.

[0054] Specifically, after obtaining the target parameter combination set, the power generation of each parameter combination in the set can be determined based on the target parameter combination set. For example, local irradiance data and the latitude and longitude of the photovoltaic power station system can be obtained. The main databases providing irradiance data in the industry include Solargis, from which irradiance data can be obtained. Different spacing, angle, height, capacity ratio, or DC-side capacity parameters result in different power generation. After obtaining the irradiance data and the latitude and longitude of the photovoltaic power station system, the irradiance data, latitude and longitude, spacing, angle, height, capacity ratio, and DC-side capacity parameters of each parameter combination can be used as input to the power generation model. After multiple calculations, the power generation of each parameter combination can be obtained. For example, the power generation of each parameter combination in the first year can be calculated in the PVsyst simulation software, and the power generation over the next 25 years can be obtained based on the decay coefficient. It should be noted that the current power generation model is mature and can be directly called and calculated, or the power generation can be calculated using appropriate calculation software based on the irradiance data, latitude and longitude, and various parameter data.

[0055] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set includes: obtaining a first pile foundation height change value when the angle parameter changes relative to the initial angle; obtaining a second pile foundation height change value when the height parameter changes relative to the initial height; determining the pile foundation height change value based on the first pile foundation height change value and the second pile foundation height change value; and determining the per-watt pile foundation usage based on the ratio of the product of the pile foundation height change value and the number of piles to the DC capacity of the photovoltaic module.

[0056] Specifically, calculating the change in pile foundation height involves two parts: the height change caused by the change in inclination angle, and the change caused by directly altering the height of the lower edge of the component. When calculating the change caused by the inclination angle, as follows... Figure 2 As shown, 0.02(N-1)+N*L mod The array width is represented by N, the number of rows of components installed in the array is N, and L is L. modLet α be the component length. When the tilt angle α changes, the height of the pile foundation must change accordingly to ensure that the height of the lower edge of the component remains unchanged. Specifically, this depends on the difference between the product of the sine of the tilt angle before and after the change and half the width of the inclined plane. This difference is (sinα-sinα²)·[0.02(N-1)+N*Lmod] / 2. At this time, this difference represents the change in the pile foundation height above ground. To ensure structural stability, a corresponding change must also be made below ground. This change ratio is generally taken as 0.5, so it needs to be multiplied by (1+λ). Here, λ is the proportionality coefficient, which can be taken as 0.5. Thus, the change in the first pile foundation height relative to the initial angle can be obtained. When calculating the change caused by changing the lower edge height, directly take the difference between the heights before and after the change, and then multiply by the coefficient, i.e., (hh pf1 (1+λ), h pf1 This is the initial value of the lower edge height of the component. From this, the change in the height of the second pile foundation relative to the initial height can be obtained. Finally, add the original height h. upf This refers to the total height H after the change. Therefore, after obtaining the change value of the pile foundation height, the amount of pile foundation material used per watt can be determined by the ratio of the product of the change value and the number of piles to the DC capacity of the photovoltaic module. The specific calculation of the amount of pile foundation material used per watt is as follows: (2)

[0057]

[0058] Where △H represents the length of a single-tile pile foundation, n 阵列 L represents the number of piles in an array. mod E represents the length of the photovoltaic module. h Where is the DC capacity of the photovoltaic module, N is the number of rows of modules installed in the array, λ represents the ratio of the increase (or decrease) in length below the pile foundation to the increase (or decrease) in length above the ground, typically taken as 0.5, α2 is the initial angle value, α is the angle value after the change in the lower edge height, and h pf1 h is the initial value of the lower edge height of the photovoltaic module. upf This represents the initial length of the pile foundation.

[0059] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set includes: determining the steel usage of a single array bracket in the photovoltaic module based on the angle parameter; and determining the steel usage per watt based on the ratio of the steel usage of a single array bracket to the DC capacity of the photovoltaic module.

[0060] Specifically, the influencing factors on the support structure are mainly the tilt angle and local snow accumulation. For determining the layout design in a specific region, the tilt angle is the primary factor. In terms of materials, the variation in steel usage is evident; the steel usage varies gradually across a region. Given a fixed snow load in a given area, the steel usage of the support structure will be related to the angle, with a specific steel usage corresponding to a certain range of angles. For example, ... Figure 3 As shown, when the angle is in the range of α0 to α1, the amount of steel used in the bracket remains unchanged and can be M1. However, when the angle changes to the range of α1 to α2, the amount of steel used changes from M1 to M2 due to the change in angle. Therefore, for tracking brackets, the steel used in the bracket remains basically unchanged when the tracking range is consistent. For fixed and adjustable brackets, it is necessary to look at the maximum tilt angle. The amount of steel used in a single array bracket in the photovoltaic module can be determined based on the angle parameter. After obtaining the amount of steel used, the amount of steel used per watt can be determined based on the ratio of the amount of steel used in a single array bracket to the DC capacity of the photovoltaic module. The specific calculation of the amount of steel used per watt is as follows: (3)

[0061]

[0062] Among them, M i This is the steel consumption of a single array support in a certain region, calculated based on structural characteristics, wind and snow pressure, and tilt angle. Here, it is directly referenced based on the tilt angle range. △M represents the steel consumption per tile, and E... h This refers to the DC capacity of the photovoltaic module.

[0063] According to one embodiment of the present invention, determining the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set includes: obtaining the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio; determining the land area based on the initial land area, the spacing change value, and the capacity ratio change value; and determining the land area per watt based on the ratio of the land area to the DC capacity of the photovoltaic module.

[0064] Specifically, land use is mainly related to the spacing factor, that is, the larger the spacing, the more land is used. First, obtain the spacing change value between the spacing parameter L and the initial spacing parameter L0. In addition, the change in capacity ratio can also be taken into account, that is, obtain the capacity ratio change value between the capacity ratio C and the initial capacity ratio C0. After obtaining the spacing change value and the capacity ratio change value, the land area can be determined by multiplying the initial land area S0 with the spacing change value and the capacity ratio change value. After calculating the land area, the land area per watt can be determined by the ratio of the land area to the DC capacity E of the photovoltaic module array. The specific calculation of the land area per watt is as follows (4):

[0065]

[0066] Where L0 is the initial spacing, L is the spacing parameter, C is the capacity ratio, C0 is the initial capacity ratio, S0 is the initial land area, E is the DC capacity of the photovoltaic module array, and S 土地 The changed land area is △S 土地 This refers to the land area per tile.

[0067] In addition, the amount of material used is mainly related to the spacing between the front and rear cables, that is, the larger the spacing, the more material is used. However, although the change ratio of the cable in the spacing direction and the vertical spacing direction is the same, the change length is different. Therefore, there is a certain difference from the land use calculation. The specific calculation is as follows: formula (5):

[0068]

[0069] Among them, l a+b Where C is the initial total amount of array cables, C0 is the capacity ratio, L0 is the initial spacing, L is the spacing parameter, δ is the proportional expansion coefficient, L is the changed cable length, and ΔL is the length of a single watt of cable.

[0070] According to one embodiment of the present invention, when using the capacity ratio parameter, the material usage of each parameter combination in the target parameter combination set is determined according to the target parameter combination set, including: calculating the total DC-side installed capacity based on the rated capacity of the inverter and the capacity ratio parameter; determining the number of combiner boxes based on the total DC-side installed capacity, the power of the photovoltaic modules, the number of strings in the photovoltaic modules, and the number of strings that the combiner box can connect to; and determining the number of combiner boxes per watt based on the ratio of the number of combiner boxes to the DC capacity of the photovoltaic modules.

[0071] Specifically, generally, one box-type inverter corresponds to one array, and the array contains multiple combiner boxes; or one box-type transformer corresponds to one array, and the array contains multiple string inverters. Therefore, the number of combiner boxes or string inverters depends on the array size. For combiner boxes, the more DC installed capacity, the more combiner boxes are needed. Furthermore, since the AC output is essentially fixed, the higher the capacity ratio, the more combiner boxes are needed. For string inverters, the more DC installed capacity, the more string inverters are needed. Since the DC installed capacity is only related to the number of strings, the number of string inverters is only related to the DC installed capacity. It should be noted that changes in module inverters and combiner boxes only involve changes in quantity; the quantity can be calculated. String inverters are used in conjunction with box-type transformers, and combiner boxes are used in conjunction with box-type inverters.

[0072] When calculating the number of single-watt combiner boxes using the capacity ratio parameter, it can be based on the rated inverter capacity E of the box. inv Calculate the total DC-side installed capacity using the capacity ratio parameter C, and obtain the power P of the photovoltaic modules. u The number N of modules in a string in a photovoltaic module modAnd the number of serial channels n that the combiner box can connect to. cbl As shown in formula (6) below, based on the total DC-side installed capacity and the power P of the photovoltaic modules... u The number N of modules in a string in a photovoltaic module mod And the number of serial channels n that the combiner box can connect to. cbl The ratio can be used to calculate the number of combiner boxes, n. After obtaining the number of combiner boxes, the number of combiner boxes per watt can be determined based on the ratio of the number of combiner boxes n to the DC capacity E of the photovoltaic modules. That is, the changed total DC-side installed capacity is calculated using the rated capacity of the inverter and the changed capacity ratio. The total DC-side installed capacity is then divided by the string power (i.e., P). u *N mod ), and the number of groups is known. Dividing by the number of groups gives the number of combiner boxes corresponding to the changed total capacity. The specific calculation method for the number of combiner boxes per watt is as follows: (6)

[0073]

[0074] Among them, E inv Where C is the rated capacity of the inverter, P is the capacity ratio parameter, and C is the rated capacity of the inverter. u N represents the power of the photovoltaic module. mod n is the number of components in the string. cbl Δn represents the number of serial ports that can be connected to the combiner box, n represents the number of combiner boxes, and Δn represents the number of combiner boxes per watt.

[0075] According to another embodiment of the present invention, when using DC-side capacity parameters, determining the material usage for each parameter combination in the target parameter combination set based on the target parameter combination set includes: determining the material usage based on the DC capacity E of the photovoltaic module and the power P of the photovoltaic module. u The number of string inverters is determined by the number of inverter channels; the number of string inverters per watt is determined by the ratio of the number of string inverters to the DC capacity of the photovoltaic modules.

[0076] Specifically, when determining the number of single-watt string inverters using DC-side capacity parameters, the number can be based on the DC capacity E of the photovoltaic modules and the power P of the photovoltaic modules. u The number of MPPT channels (n) in a string inverter inv Once the number of string inverters is determined, the number of string inverters per watt can be determined based on the ratio of the number of string inverters to the DC capacity of the photovoltaic modules. The specific calculation method for the number of string inverters per watt is as follows (7):

[0077]

[0078] Where, ninv Where E is the number of channels in the string inverter, P is the DC capacity of the photovoltaic module, and E is the DC capacity of the photovoltaic module. u For the power of photovoltaic modules, N mod Where N is the number of components in the string, Δn is the number of string inverters, and Δn is the number of single-watt string inverters.

[0079] In addition, during the process of changing the capacity ratio of the entire power station, the number of box inverters or box transformers can be reduced or increased by an integer number of the same model. In this case, the actual number can be calculated based on the total installed capacity of the power station and the total installed capacity of a single array. If the number of the same model is not changed by chance, a smaller capacity box inverter or box transformer will be used. In this case, it can be considered that the nominal number evenly distributed per watt remains unchanged. As shown in the following formula (8), for box inverters, if the total installed capacity of the power station divided by the DC side installed capacity is divisible, the calculation result is used as the actual number of box inverters. If the result is not divisible, the initial number of box inverters can be used. After obtaining the number of box inverters, the nominal number per watt can be determined by dividing the number of box inverters by the total installed capacity of the power station. For box transformers, if the total installed capacity of the power station divided by the DC capacity of the photovoltaic modules is divisible, the calculation result is used as the actual number of box transformers. If the result is not divisible, the initial number of box transformers can be used. After obtaining the number of transformer substations, the nominal number per watt can be determined by dividing the number of transformer substations by the total installed capacity of the power station. The number of transformer substations per watt is calculated using the following formula (8):

[0080]

[0081] Among them, E all n is the total installed capacity of the power station, a fixed value. x0 n represents the actual quantity in the process of optimizing the transformer substation or transformer substation. x0 This refers to the initial number of box-type inverters or box-type substations. For box-type inverters, E represents the total DC-side installed capacity; for box-type substations, E represents the DC capacity of the photovoltaic modules, Δn. x This refers to the number of single-watt box inverters or box transformers.

[0082] S4. Determine the evaluation index for each parameter combination based on the power generation and material consumption of each parameter combination, determine the target parameter combination based on the evaluation index of each parameter combination, and lay out the photovoltaic power station system according to the target parameter combination.

[0083] According to one embodiment of the present invention, determining the target parameter combination based on the evaluation index of each parameter combination includes: taking the smallest value among all the evaluation indices of the parameter combinations as the target evaluation index; and taking the parameter combination corresponding to the target evaluation index as the target parameter combination.

[0084] Specifically, after obtaining the power generation and material usage for each parameter combination through the above steps, the evaluation index for each parameter combination can be determined. For example, the evaluation index can be the levelized cost of electricity (LCOE), gross profit margin, revenue, etc. Different perspectives may use different indicators, or the lowest cost can be used as the evaluation index. For instance, taking the LCOE as an example, after obtaining the per-watt pile foundation usage, per-watt steel usage, per-watt cable length, per-watt land area, and the number of per-watt combiner boxes or per-watt string inverters, or the number of per-watt box inverters or per-watt box transformers, different materials may have the same or different prices. Multiplying the per-watt material usage for each material by the unit price of that material gives the per-watt price. Then, the per-watt prices can be added together to obtain the per-watt cost for the corresponding parameter combination. Therefore, power generation, per-watt material cost, and land cost (land area multiplied by unit price) can be used as inputs to the financial model to obtain the evaluation index for each parameter combination. Since there are multiple parameter combinations (e.g., n1×n2×n3×n4 combinations), the material usage and power generation of each combination are calculated each time, thus obtaining the cost per kilowatt-hour for each combination. Among the multiple parameter combinations, the evaluation index with the smallest value is selected as the target evaluation index (e.g., the parameter combination with the lowest cost per kilowatt-hour). The parameter combination corresponding to the target evaluation index can be used as the target parameter combination. Therefore, the parameters of this combination can be considered as the optimal parameters, which can serve as the best installation method for the photovoltaic power station system. Thus, the layout of the photovoltaic power station system can be based on the target parameter combination.

[0085] The following is combined with Figure 4 The layout method of the present invention will be described below.

[0086] As a specific example, the layout method of the photovoltaic power station system of the present invention may include the following steps:

[0087] S101, obtain a set of parameters consisting of the spacing parameters between adjacent supports, the angle parameters between the photovoltaic module and the horizontal plane of the support, the height parameters between the photovoltaic module and the ground, and the capacity ratio parameters / DC side capacity parameters.

[0088] S102, delete the parameter combinations corresponding to land areas greater than the preset area threshold, in order to obtain the target parameter combination set.

[0089] S103, when the support is a flat single-axis tracking support, update the height parameter in the corresponding combination according to the angle parameter of each parameter combination in the target parameter combination set and the actual maximum tracking angle to obtain the final target parameter combination set.

[0090] S104, obtains irradiance data and the latitude and longitude of the photovoltaic power station system.

[0091] S105 uses irradiance data, latitude and longitude, spacing parameters, angle parameters, height parameters, and capacity ratio / DC side capacity parameters as inputs to the power generation model. The first year's power generation is simulated in PVsyst software, and the power generation for the next 25 years is obtained based on the attenuation coefficient.

[0092] S106, calculate the material usage for each parameter combination, such as the amount of pile foundation per tile, the amount of steel per tile, the length of cable per tile, the land area per tile, the number of combiner boxes per tile or the number of string inverters per tile, the number of box inverters per tile or the number of box transformers per tile.

[0093] S107: Based on the input of power generation, material consumption, and land cost into the financial model, evaluation indicators are obtained.

[0094] S108, among all the evaluation indicators of the parameter combination, the smallest or largest value is taken as the target evaluation indicator, and the parameter combination corresponding to the target evaluation indicator is taken as the target parameter combination.

[0095] S109, the target parameter combination is the optimal installation method.

[0096] In summary, the photovoltaic power station system layout method according to embodiments of the present invention first obtains a parameter combination set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio / DC-side capacity parameters. Each parameter has multiple different values, with the number of values ​​for each parameter being the same or different. Then, the parameter combination set is optimized according to preset constraints to obtain a target parameter combination set. Next, the power generation and material consumption of each parameter combination in the target parameter combination set are determined. Finally, an evaluation index for each parameter combination is determined based on its power generation and material consumption, and a target parameter combination is determined based on the evaluation index. Finally, the photovoltaic power station system is laid out according to the target parameter combination. Therefore, this method can improve layout accuracy and computational efficiency.

[0097] Corresponding to the above embodiments, the present invention also proposes a layout device for a photovoltaic power station system.

[0098] like Figure 5 As shown, the layout device 100 of the photovoltaic power station system in this embodiment of the invention includes: an acquisition module 110, an optimization module 120, a first determination module 130, and a second determination module 140.

[0099] The acquisition module 110 acquires a set of parameters consisting of spacing parameters between adjacent supports, angle parameters between the photovoltaic modules and the horizontal plane of the supports, height parameters between the photovoltaic modules and the ground, and capacity ratio / DC-side capacity parameters. Each parameter has multiple different values, with the number of values ​​for each parameter being the same or different. The optimization module 120 optimizes the parameter set according to preset constraints to obtain a target parameter set. The first determination module 130 determines the power generation and material consumption of each parameter combination in the target parameter set based on the target parameter set. The second determination module 140 determines the evaluation index of each parameter combination based on its power generation and material consumption, determines the target parameter combination based on the evaluation index, and lays out the photovoltaic power station system according to the target parameter set.

[0100] According to an embodiment of the present invention, when using the capacity ratio parameter, the optimization module 120 optimizes the parameter combination set according to the constraints to obtain a target parameter combination set. Specifically, it is used to: obtain the initial spacing parameter, the initial capacity ratio, and the initial land area; obtain the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio in each parameter combination; determine the land area of ​​each parameter combination based on the initial land area, the spacing change value, and the capacity ratio change value; and delete the parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set.

[0101] According to an embodiment of the present invention, when using DC side capacity parameters, the optimization module 120 optimizes the parameter combination set according to constraints to obtain a target parameter combination set. Specifically, it is used to: obtain initial spacing parameters and initial land area; obtain the spacing change value between the spacing parameter and the initial spacing parameter in each parameter combination; determine the land area of ​​each parameter combination based on the initial land area and the spacing change value; and delete parameter combinations whose land area is greater than a preset area threshold to obtain the target parameter combination set.

[0102] According to one embodiment of the present invention, the optimization module 120 is further configured to, when the support is a flat single-axis tracking support, after obtaining the target parameter combination set, obtain the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module; determine the actual maximum tracking tilt angle based on the vertical height and the limiting angle of the flat single-axis tracking support; and update the height parameter in the corresponding combination based on the angle parameter of each parameter combination in the target parameter combination set and the actual maximum tracking angle, so as to obtain the final target parameter combination set.

[0103] According to an embodiment of the present invention, the first determining module 130 determines the power generation of each parameter combination in the target parameter combination set based on the target parameter combination set. Specifically, it is used to: acquire irradiance data and the latitude and longitude of the photovoltaic power station system; and use the irradiance data, latitude and longitude, spacing parameters, angle parameters, height parameters, and capacity ratio parameters / DC side capacity parameters as inputs to the power generation model to obtain the power generation of each parameter combination.

[0104] According to one embodiment of the present invention, the first determining module 130 determines the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set, specifically for: obtaining the first pile foundation height change value when the angle parameter changes relative to the initial angle; obtaining the second pile foundation height change value when the height parameter changes relative to the initial height; determining the pile foundation height change value based on the first pile foundation height change value and the second pile foundation height change value; and determining the per-watt pile foundation usage based on the ratio of the product of the pile foundation height change value and the number of piles to the DC capacity of the photovoltaic module.

[0105] According to one embodiment of the present invention, the first determining module 130 determines the material usage of each parameter combination in the target parameter combination set according to the target parameter combination set, specifically for: determining the steel usage of a single array bracket in the photovoltaic module according to the angle parameter; and determining the steel usage per watt according to the ratio of the steel usage of a single array bracket to the DC capacity of the photovoltaic module.

[0106] According to an embodiment of the present invention, the first determining module 130 determines the material usage of each parameter combination in the target parameter combination set based on the target parameter combination set, specifically for: obtaining the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio; determining the land area based on the initial land area, the spacing change value, and the capacity ratio change value; and determining the land area per watt based on the ratio of the land area to the DC capacity of the photovoltaic module.

[0107] According to one embodiment of the present invention, when using the capacity ratio parameter, the first determining module 130 determines the material usage of each parameter combination in the target parameter combination set according to the target parameter combination set. Specifically, it is used to: calculate the total DC-side installed capacity based on the rated capacity of the inverter and the capacity ratio parameter; determine the number of combiner boxes based on the total DC-side installed capacity, the power of the photovoltaic modules, the number of strings in the photovoltaic modules, and the number of strings that can be connected to the combiner box; and determine the number of combiner boxes per watt based on the ratio of the number of combiner boxes to the DC capacity of the photovoltaic modules.

[0108] According to one embodiment of the present invention, when using DC-side capacity parameters, the first determining module 130 determines the material usage of each parameter combination in the target parameter combination set according to the target parameter combination set. Specifically, it is used to: determine the number of string inverters according to the DC capacity of the photovoltaic module, the power of the photovoltaic module, and the number of string inverters; and determine the number of single-watt string inverters according to the ratio of the number of string inverters to the DC capacity of the photovoltaic module.

[0109] According to one embodiment of the present invention, the second determining module 140 determines the target parameter combination based on the evaluation index of each parameter combination, specifically used for: taking the smallest value among the evaluation indices of all parameter combinations as the target evaluation index; and taking the parameter combination corresponding to the target evaluation index as the target parameter combination.

[0110] It should be noted that for details not disclosed in the layout device of the photovoltaic power station system in the embodiments of the present invention, please refer to the details disclosed in the layout method of the photovoltaic power station system in the embodiments of the present invention, which will not be repeated here.

[0111] According to an embodiment of the present invention, a layout device for a photovoltaic power station system includes an acquisition module for acquiring a parameter set consisting of spacing parameters between adjacent supports, angle parameters between photovoltaic modules and the horizontal plane of the supports, height parameters between photovoltaic modules and the ground, and capacity ratio / DC-side capacity parameters. Each parameter has multiple different values, and the number of values ​​for each parameter may be the same or different. An optimization module optimizes the parameter set according to preset constraints to obtain a target parameter set. A first determination module determines the power generation and material consumption of each parameter combination in the target parameter set. A second determination module determines the evaluation index of each parameter combination based on its power generation and material consumption, determines the target parameter combination based on its evaluation index, and lays out the photovoltaic power station system according to the target parameter set. Therefore, this device can improve layout accuracy and computational efficiency.

[0112] Corresponding to the above embodiments, the present invention also proposes a computer-readable storage medium.

[0113] The computer-readable storage medium of this invention stores a layout program for a photovoltaic power station system, which, when executed by a processor, implements the aforementioned layout method for the photovoltaic power station system.

[0114] According to embodiments of the present invention, a computer-readable storage medium can improve layout accuracy and computational efficiency by executing the above-described layout method for a photovoltaic power plant system.

[0115] Corresponding to the above embodiments, the present invention also proposes a photovoltaic power station system.

[0116] like Figure 6 As shown, the photovoltaic power station system 200 of this embodiment may include: a memory 210, a processor 220, and a layout program of the photovoltaic power station system stored in the memory 210 and executable on the processor 220. When the processor 220 executes the layout program of the photovoltaic power station system, it implements the above-mentioned layout method of the photovoltaic power station system.

[0117] According to the photovoltaic power station system of the present invention, by implementing the above-described layout method of the photovoltaic power station system, the layout accuracy and calculation efficiency can be improved.

[0118] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0119] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0120] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0121] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0122] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0123] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A layout method for a photovoltaic power station system, characterized in that, include: A set of parameters is obtained, consisting of the spacing parameter between adjacent supports, the angle parameter between the photovoltaic module and the horizontal plane of the support, the height parameter between the photovoltaic module and the ground, the capacity ratio parameter or the DC side capacity parameter. The spacing parameter, the angle parameter, the height parameter, and the capacity ratio parameter / DC side capacity parameter are all multiple different values, and the number of values ​​for each parameter may be the same or different. The parameter combination set is optimized according to preset constraints to obtain the target parameter combination set; The power generation and material consumption for each parameter combination in the target parameter combination set are determined based on the target parameter combination set. The evaluation index for each parameter combination is determined based on the power generation and material consumption of each parameter combination, and the target parameter combination is determined based on the evaluation index of each parameter combination. The photovoltaic power station system is then laid out based on the target parameter combination. Determining the material usage for each parameter combination in the target parameter combination set based on the target parameter combination set includes: Obtain the first pile height change value when the angle parameter changes relative to the initial angle; Obtain the change value of the second pile foundation height when the height parameter changes relative to the initial height; The pile foundation height change value is determined based on the first pile foundation height change value and the second pile foundation height change value; The length of a single-watt pile is determined by the ratio of the product of the pile height variation and the number of piles to the DC capacity of the photovoltaic module.

2. The layout method of the photovoltaic power station system according to claim 1, characterized in that, When using the capacity ratio parameter, the parameter combination set is optimized according to the constraints to obtain the target parameter combination set, including: Obtain initial spacing parameters, initial capacity ratio, and initial land area; Obtain the spacing change value between the spacing parameter and the initial spacing parameter in each parameter combination, and the capacity ratio change value between the capacity ratio parameter and the initial capacity ratio; The land area for each parameter combination is determined based on the initial land area, the spacing change value, and the capacity ratio change value. Delete the parameter combinations corresponding to land areas greater than a preset area threshold to obtain the target parameter combination set.

3. The layout method of the photovoltaic power station system according to claim 1, characterized in that, When using DC-side capacity parameters, the parameter combination set is optimized according to constraints to obtain a target parameter combination set, including: Obtain the initial spacing parameters and initial land area; Obtain the spacing change value between the spacing parameter and the initial spacing parameter in each parameter combination; The land area for each parameter combination is determined based on the initial land area and the spacing variation value; Delete the parameter combinations corresponding to land areas greater than a preset area threshold to obtain the target parameter combination set.

4. The layout method of the photovoltaic power station system according to claim 2 or 3, characterized in that, When the support is a flat single-axis tracking support, after obtaining the target parameter combination set, the method further includes: Obtain the vertical height between the lower edge of the photovoltaic module and the top of the central axis of the photovoltaic module; The actual maximum tracking tilt angle is determined based on the vertical height and the limiting angle of the single-axis tracking bracket. The height parameters in the target parameter combination set are updated based on the angle parameters of each parameter combination in the target parameter combination set and the actual maximum tracking tilt angle to obtain the final target parameter combination set.

5. The layout method of the photovoltaic power station system according to claim 1, characterized in that, Determining the power generation of each parameter combination in the target parameter combination set based on the target parameter combination set includes: Obtain irradiance data and the latitude and longitude of the photovoltaic power station system; The power generation is obtained by using the irradiance data, latitude and longitude, spacing parameters, angle parameters, height parameters, and capacity ratio / DC side capacity parameters as inputs to the power generation model.

6. The layout method of the photovoltaic power station system according to claim 1, characterized in that, Determining the material usage for each parameter combination in the target parameter combination set based on the target parameter combination set includes: The amount of steel used in a single array bracket of the photovoltaic module is determined based on the angle parameters. The amount of steel used per watt is determined based on the ratio of the amount of steel used in a single array bracket to the DC capacity of the photovoltaic module.

7. The layout method of the photovoltaic power station system according to claim 6, characterized in that, Determining the material usage for each parameter combination in the target parameter combination set based on the target parameter combination set includes: Obtain the spacing change value between the spacing parameter and the initial spacing parameter, and the capacity ratio change value between the capacity ratio and the initial capacity ratio; The land area is determined based on the initial land area, the spacing change value, and the capacity ratio change value; The land area per watt is determined based on the ratio of the land area to the DC capacity of the photovoltaic module.

8. The layout method of the photovoltaic power station system according to claim 7, characterized in that, When using the capacity ratio parameter, the material usage for each parameter combination in the target parameter combination set is determined based on the target parameter combination set, including: Calculate the total DC-side installed capacity based on the rated capacity of the inverter and the capacity ratio parameters. The number of combiner boxes is determined based on the total DC-side installed capacity, the power of the photovoltaic modules, the number of strings in the photovoltaic modules, and the number of strings that can be connected to the combiner box. The number of combiner boxes per watt is determined based on the ratio of the number of combiner boxes to the DC capacity of the photovoltaic modules.

9. The layout method of a photovoltaic power station system according to claim 7, characterized in that, When using DC-side capacity parameters, the material usage for each parameter combination in the target parameter combination set is determined based on the target parameter combination set, including: The number of string inverters is determined based on the DC capacity of the photovoltaic module, the power of the photovoltaic module, and the number of strings of the string inverter. The number of string inverters per watt is determined based on the ratio of the number of string inverters to the DC capacity of the photovoltaic modules.

10. The layout method of a photovoltaic power station system according to claim 1, characterized in that, The target parameter combination is determined based on the evaluation index for each parameter combination, including: The evaluation index with the smallest value among all parameter combinations is taken as the target evaluation index; the parameter combination corresponding to the target evaluation index is taken as the target parameter combination.

11. A layout device for a photovoltaic power station system, characterized in that, The apparatus for implementing the layout method of a photovoltaic power plant system according to any one of claims 1-10 includes: The acquisition module is used to acquire a set of parameters consisting of the spacing parameters between adjacent supports, the angle parameters between the photovoltaic modules and the horizontal plane of the supports, the height parameters between the photovoltaic modules and the ground, and the capacity ratio parameters / DC side capacity parameters. The spacing parameters, the angle parameters, the height parameters, and the capacity ratio parameters / DC side capacity parameters are all multiple different values, and the number of values ​​for each parameter may be the same or different. The optimization module is used to optimize the parameter combination set according to preset constraints to obtain the target parameter combination set; The first determining module is used to determine the power generation and material consumption of each parameter combination in the target parameter combination set according to the target parameter combination set; The second determining module is used to determine the evaluation index of each parameter combination based on the power generation and material consumption of each parameter combination, determine the target parameter combination based on the evaluation index of each parameter combination, and lay out the photovoltaic power station system according to the target parameter combination.

12. A computer-readable storage medium, characterized in that, It stores a layout program for a photovoltaic power station system, which, when executed by a processor, implements the layout method for a photovoltaic power station system according to any one of claims 1-10.

13. A photovoltaic power station system, characterized in that, The system includes a memory, a processor, and a layout program for a photovoltaic power station system stored in the memory and executable on the processor. When the processor executes the layout program for the photovoltaic power station system, it implements the layout method for the photovoltaic power station system according to any one of claims 1-10.

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