Photovoltaic power station earth volume calculation method and system based on grid method

Abstract

The invention relates to the field of photovoltaic technology, in particular to a photovoltaic power station earthwork volume calculation method and system based on a grid method.The method comprises the steps that a photovoltaic panel array arrangement diagram is received, and array boundary point features are extracted from each photovoltaic panel array; performing ray detection based on the 3D terrain, acquiring elevation data of key points, and constructing a vector matrix and establishing a grid model by taking each key point as a grid vertex; constructing a design ground by taking the heights of components of the photovoltaic panel array from the ground and the north-south arrangement angles of the photovoltaic panel array as references; according to the grid model and the design ground, earth volume calculation is conducted on each grid, meanwhile, the grid filling volume located on the two outer sides of the assembly of the photovoltaic panel array is abandoned, and the total earth volume is solved. According to the invention, the problems of general earth volume calculation, lack of pertinence and insufficient refinement in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic technology, and particularly relates to a method and system for calculating the earthwork volume of a photovoltaic power station based on the grid method. Background Art

[0002] During the construction process of a photovoltaic power station, the accurate calculation of the earthwork volume is a key link to ensure the effective control of the project cost, construction progress, and operation and maintenance costs. At present, although earthwork volume calculation methods such as the grid method, DTM method, contour method, and cross-section method have been integrated into building design software and modeling software, their applications in the field of photovoltaic power station design still have obvious deficiencies.

[0003] Specifically, the existing software-based earthwork volume calculation methods usually make a general estimate of the photovoltaic power station site, without fully considering the specific layout of the photovoltaic panel arrays, resulting in an overestimated earthwork volume and a lack of pertinence. In addition, due to the different tilting angles of the photovoltaic panel arrays, the existing methods cannot calculate the earthwork volume independently for the terrain slope of each array, making the calculation results deviate greatly from the actual requirements. At the same time, the characteristics of the inner part of the photovoltaic panel components being both filled and excavated, and the outer parts on both sides being only excavated and not filled are not fully reflected in the existing calculation methods, further limiting the accuracy of the calculation results. Summary of the Invention

[0004] One object of the present invention is to propose a method for calculating the earthwork volume of a photovoltaic power station based on the grid method to solve the problems of general earthwork volume calculation, lack of pertinence, and insufficient refinement in the prior art.

[0005] Another object of the present invention is to propose a system for calculating the earthwork volume of a photovoltaic power station based on the grid method, which applies the above-mentioned method for calculating the earthwork volume of a photovoltaic power station based on the grid method.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A method for calculating the earthwork volume of a photovoltaic power station based on the grid method includes the following steps:

[0008] S1. Receive the layout diagram of the photovoltaic panel arrays, and extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panels in a ratio of 1:2:1;

[0009] S2. Perform ray detection based on the 3D terrain to obtain the elevation data of the key points, and construct a vector matrix and establish a grid model with each key point as a grid vertex;

[0010] S3. Construct a design ground based on the height of the components of the photovoltaic panel array from the ground and the north-south arrangement angle of the photovoltaic panel array.

[0011] S4. Calculate the earthwork volume of each grid according to the grid model and the design ground, and at the same time discard the grid filling volume on both outer sides of the components of the photovoltaic panel array to solve the total earthwork volume.

[0012] Preferably, the S1 specifically includes the following steps:

[0013] S11. Receive the layout diagram of the photovoltaic panel array, perform minimum geometric boundary processing on each photovoltaic panel array to obtain a photovoltaic panel array that is only composed of four vertices to form a rectangle.

[0014] S12. Extract boundary points through the four vertices of each photovoltaic panel array, namely the southeast corner P1, the northeast corner P2, the northwest corner P3, and the southwest corner P4.

[0015] S13. Along the north-south direction of the photovoltaic panel array, based on linear interpolation, extract key points between the southeast corner P1 and the northeast corner P2, and between the northwest corner P3 and the southwest corner P4 according to the number of photovoltaic panels:

[0016]

[0017] Among them, P i (12) represents the key point on the i-th photovoltaic panel close to the southeast corner P1 between the southeast corner P1 and the northeast corner P2 of the photovoltaic panel array, and P i (43) represents the key point on the i-th photovoltaic panel close to the southwest corner P4 between the southwest corner P4 and the northwest corner P3 of the photovoltaic panel array, where i = 0, 1, 2,..., n, and n represents the number of photovoltaic panels;

[0018] S13. According to the characteristics that the photovoltaic panel is restricted by the minimum height from the ground after rotating 60°, and the rotation distance in the horizontal direction is the length of the photovoltaic panel Along the east-west direction of the photovoltaic panel array, based on linear interpolation, extract key points between the southeast corner P1 and the southwest corner P4 according to the length of the photovoltaic panel in a ratio of 1:2:1:

[0019]

[0020]

[0021] Among them, P i (14) represents the key point on the i-th photovoltaic panel close to the southeast corner P1 between the southeast corner P1 and the southwest corner P4 of the photovoltaic panel array, and P i(41) represents the key point on the \(i\)-th photovoltaic panel close to the south - west corner \(P4\) between the south - east corner \(P1\) and the south - west corner \(P4\) of the photovoltaic panel array, and the order of the key points on the \(i\)-th photovoltaic panel from west to east is: \(P i (43), \(P i (41), \(P i (14) and \(P i (12).

[0022] Preferably, the said \(S2\) specifically includes the following steps:

[0023] Divide the grid into three parts for vector matrix construction to consider the differences in the earthwork volume calculation rules inside and outside the components of the photovoltaic panel:

[0024]

[0025] Among them, \(i\) represents the grid number.

[0026] Preferably, the said \(S3\) specifically includes the following steps:

[0027] Define the direction from the south - west corner \(P4\) to the south - east corner \(P1\) on the photovoltaic panel array as the \(x\) - axis direction, define the direction from the south - west corner \(P4\) to the north - west corner \(P3\) on the photovoltaic panel array as the \(z\) - axis, and the direction perpendicular to the photovoltaic panel array as the \(y\) - axis direction. According to the pile point position \((x0,y0,z0)\) of the driving column of the photovoltaic panel support and the terrain slope trend of the current photovoltaic panel array location, fit a straight line, and use the slope of this straight line as the north - south tilt angle \(\theta\) of the current photovoltaic panel array layout to determine the design ground:

[0028] \(\sin(\theta)x+\cos(\theta)z+\sin(\theta)x0+\cos(\theta)z0 = 0\)

[0029] Among them, \(x\) represents the \(x\) - coordinate of the design ground where the current photovoltaic panel array is located, and \(z\) represents the \(z\) - coordinate of the design ground where the current photovoltaic panel array is located.

[0030] Preferably, the said \(S4\) specifically includes the following steps:

[0031] S41. Compare the natural height \(Z\) corresponding to each vertex of each grid with the height \(z\) of the design ground between each vertex of each grid and the natural ground, mark the grid vertices lower than the design ground height as filling state, and mark the grid vertices higher than the design ground height as excavation state; design Compare the natural height \(Z\) corresponding to each vertex of each grid with the height \(z\) of the design ground between each vertex of each grid and the natural ground, mark the grid vertices lower than the design ground height as filling state, and mark the grid vertices higher than the design ground height as excavation state;

[0032] S42. According to the excavation and filling states of each grid, including full filling, full excavation, one - excavation and three - filling, half - excavation and half - filling, and three - excavations and one - filling, and give the corresponding earthwork volume calculation formula for each excavation and filling state of the grid:

[0033] S421. When the excavation and filling state of the grid is one excavation and three fillings or three excavations and one filling, the zero boundary point (x zero , y zero ) on the grid boundary between the vertex in the excavation state and the vertex in the filling state is obtained by using two adjacent vertices with different states in the current grid:

[0034]

[0035] where (x1, y1, z1) and (x2, y2, z2) represent the vertex in the excavation state and the vertex in the filling state respectively;

[0036]

[0037] where V 挖 represents the excavation volume, V 填 represents the filling volume, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z design of the designed ground, L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and S represents the area of the current grid in the x-axis and z-axis planes;

[0038] S422. When the excavation and filling state of the grid is full excavation or full filling, the calculation of the excavation volume or filling volume is as follows:

[0039]

[0040] where V 挖 / 填 represents the excavation volume or filling volume, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z design of the designed ground, θ represents the north-south tilt angle of the current photovoltaic panel array, P1 represents the vertex in the southeast direction of the current grid, i.e., the southeast corner of the photovoltaic panel array, P2 represents the vertex in the northeast direction of the current grid, i.e., the northeast corner of the photovoltaic panel array, n represents the number of photovoltaic panels, wide represents the length of the current grid in the east-west direction, i.e., the width, and the widths of the vector matrices A i , vector matrix B i and vector matrix C i are all inconsistent;

[0041] S423. When the excavation and filling state of the grid is half excavation and half filling, the calculation of the excavation volume or filling volume is as follows:

[0042]

[0043] where: V 挖 / 填 represents the excavation volume or filling volume, ΔH represents the difference between the natural height Z corresponding to the excavation vertex of the current grid and the natural ground and the height z designThe difference, θ represents the north-south tilt angle of the current photovoltaic panel array, L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and d represents the distance between the two excavation vertices;

[0044] S43. Calculate the earthwork volume of each grid, and discard the excavation volume of the grids located in vector matrix A i and vector matrix C i of the grids. Add up the earthwork volumes of all grids to obtain the earthwork volume of the array, and then summarize the earthwork volumes of all arrays to obtain the total earthwork volume.

[0045] A photovoltaic power station earthwork volume calculation system based on the grid method is applied to a photovoltaic power station earthwork volume calculation method as described above, including:

[0046] The key point extraction module is used to receive the photovoltaic panel array layout diagram and extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panel at a ratio of 1:2:1;

[0047] The grid model construction module is used to perform ray detection based on the 3D terrain, obtain the key point elevation data, and construct a vector matrix and establish a grid model with each key point as a grid vertex;

[0048] The designed ground determination module is used to construct the designed ground based on the component ground clearance height of the photovoltaic panel array and the north-south arrangement angle of the photovoltaic panel array;

[0049] The earthwork volume calculation module is used to calculate the earthwork volume of each grid according to the grid model and the designed ground, and at the same time discard the filling volume of the grids on both outer sides of the components of the photovoltaic panel array to solve the total earthwork volume.

[0050] One of the above technical solutions has the following beneficial effects:

[0051] 1. Improve calculation accuracy: Through fine grid division and key point extraction, it is possible to more accurately capture the terrain features of the photovoltaic power station construction area, thereby improving the accuracy of earthwork volume calculation.

[0052] 2. Optimize resource utilization: By discarding the unnecessary filling volume outside the components, it helps to optimize the utilization of construction resources and reduce unnecessary waste.

[0053] 3. Improve construction efficiency: Accurate earthwork volume calculation can provide strong support for the construction plan, helping the construction party to more reasonably arrange the construction sequence and resource allocation, thereby improving the overall construction efficiency.

[0054] 4. Cost reduction: By reducing unnecessary earthwork and resource waste, it helps to reduce the construction cost of the PV power station and improve the economy of the project. Description of the Drawings

[0055] Figure 1 is a schematic diagram of the principle of a method for calculating the earthwork volume of a PV power station based on the grid method according to the present invention;

[0056] Figure 2 is a schematic diagram of the excavation and filling status of the grid in a method for calculating the earthwork volume of a PV power station based on the grid method according to the present invention. Detailed Embodiments

[0057] The technical solution of the present invention will be further described below in conjunction with the drawings and through specific embodiments.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] As Figure 1 shown, a method for calculating the earthwork volume of a PV power station based on the grid method includes the following steps:

[0062] S1. Receive the layout diagram of the photovoltaic panel array, and extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panel in a ratio of 1:2:1;

[0063] S2. Perform ray detection based on the 3D terrain, obtain the elevation data of the key points, and construct a vector matrix and establish a grid model with each key point as the grid vertex;

[0064] S3. Construct a designed ground based on the ground clearance height of the components of the photovoltaic panel array and the north-south arrangement angle of the photovoltaic panel array;

[0065] S4. Calculate the earthwork volume of each grid according to the grid model and the designed ground, and at the same time discard the earthwork filling volume of the grids on both outer sides of the components of the photovoltaic panel array, and solve the total earthwork volume.

[0066] A method for calculating the earthwork volume of a photovoltaic power station based on the grid method in the present invention, the core of which is to efficiently calculate the earthwork volume required for the construction of a photovoltaic power station through precise spatial analysis and geometric modeling. The specific working principle is as follows:

[0067] Step S1 is mainly for receiving the layout diagram of the photovoltaic panel array and feature extraction: First, receive the layout diagram of the photovoltaic panel array of the photovoltaic power station, which contains the layout, size and position information of the photovoltaic panels. Then, for each photovoltaic panel array, the system extracts the boundary point features of the array. This includes sequentially extracting key points in the north-south direction according to the number of photovoltaic panels, and these points represent the important positions of the photovoltaic panel array in the north-south direction. At the same time, in the east-west direction, key points are extracted according to the length of the photovoltaic panel in a ratio of 1:2:1, which helps to more accurately divide the photovoltaic panel array.

[0068] Step S2 is mainly for establishing a grid model and collecting elevation data: Use the 3D terrain data to perform ray detection to obtain the actual elevation data of each key point. These data reflect the terrain undulation of the construction site of the photovoltaic power station. Using these key points as the vertices of the grid, a grid model is established. This model divides the area where the photovoltaic panel array is located into a series of small grid units, and each unit represents a local terrain area. At the same time, a vector matrix is constructed for subsequent calculations and analyses.

[0069] Step S3 is mainly for constructing a designed ground: According to the ground clearance height of the components of the photovoltaic panel array and the north-south arrangement angle of the array, a virtual designed ground is constructed. This designed ground represents the expected terrain after the completion of the construction of the photovoltaic power station.

[0070] Step S4 mainly focuses on earthwork calculation and result optimization: Based on the grid model, the earthwork volume of each grid cell is calculated. This includes the calculation of filling and excavation volumes, reflecting the topographic transformation work required to reach the designed ground level. To more accurately reflect the actual construction situation, the method excludes the grid filling volume on the two outer sides of the photovoltaic modules because these areas generally do not belong to the core construction area of the photovoltaic power station. Finally, the total earthwork volume is solved to provide key project quantity data for the construction of the photovoltaic power station.

[0071] In summary, the beneficial effects of the present invention include:

[0072] 1. Improve calculation accuracy: Through fine grid division and key point extraction, the topographic features of the photovoltaic power station construction area can be captured more accurately, thus improving the accuracy of earthwork volume calculation.

[0073] 2. Optimize resource utilization: By excluding the unnecessary filling volume outside the modules, it helps to optimize the utilization of construction resources and reduce unnecessary waste.

[0074] 3. Enhance construction efficiency: Precise earthwork volume calculation can provide strong support for the construction plan, helping the construction party to arrange the construction sequence and resource allocation more reasonably, thus enhancing the overall construction efficiency.

[0075] 4. Reduce costs: By reducing unnecessary earthwork and resource waste, it helps to reduce the construction cost of the photovoltaic power station and improve the economy of the project.

[0076] For further illustration, the specific steps of S1 are as follows:

[0077] S11. Receive the layout diagram of the photovoltaic panel array, perform minimum geometric boundary processing on each photovoltaic panel array to obtain a photovoltaic panel array consisting of only four vertices forming a rectangle.

[0078] S12. Extract boundary points through the four vertices of each photovoltaic panel array, namely the southeast corner P1, the northeast corner P2, the northwest corner P3, and the southwest corner P4.

[0079] S13. Based on linear interpolation, extract key points between the southeast corner P1 and the northeast corner P2, and between the northwest corner P3 and the southwest corner P4 along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels:

[0080]

[0081] Among them, P i (12) represents the key point on the i-th photovoltaic panel close to the southeast corner P1 between the southeast corner P1 and the northeast corner P2 of the photovoltaic panel array, P i(43) represents the key point on the \(i\)-th photovoltaic panel, close to the south-west corner \(P4\), between the south-west corner \(P4\) and the north-west corner \(P3\) of the photovoltaic panel array, where \(i = 0, 1, 2, \ldots, n\), and \(n\) represents the number of photovoltaic panels;

[0082] S13. According to the characteristics of the minimum ground clearance constraint after the photovoltaic panel rotates by \(60^{\circ}\), and the rotation distance in the horizontal direction is the length of the photovoltaic panel Extract key points based on linear interpolation in a ratio of 1:2:1 according to the length of the photovoltaic panel between the south-east corner \(P1\) and the south-west corner \(P4\) along the east-west direction of the photovoltaic panel array:

[0083]

[0084] where \(P\) i (14) represents the key point on the \(i\)-th photovoltaic panel, close to the south-east corner \(P1\), between the south-east corner \(P1\) and the south-west corner \(P4\) of the photovoltaic panel array, \(P\) i (41) represents the key point on the \(i\)-th photovoltaic panel, close to the south-west corner \(P4\), between the south-west corner \(P4\) and the south-east corner \(P1\) of the photovoltaic panel array, and the order of the key points on the \(i\)-th photovoltaic panel from west to east is: \(P\) i (43), \(P\) i (41), \(P\) i (14) and \(P\) i (12).

[0085] Further explanation, the specific steps of \(S_2\) are as follows:

[0086] Divide the grid into three parts to construct a vector matrix, considering the differences in the calculation rules of the earthwork volume inside and outside the components of the photovoltaic panel:

[0087]

[0088] where \(i\) represents the grid number.

[0089] In the method for calculating the earthwork volume of a photovoltaic power station based on the grid method, in order to accurately construct a grid model and calculate the earthwork volume, the following steps are taken:

[0090] Firstly, key point height measurement and grid model construction: After receiving the layout diagram of the photovoltaic panel array, for each key point of the photovoltaic panel array, we emit rays vertically downward on the 3D terrain. After these rays collide with the terrain surface, we measure the length of the rays, that is, obtain the height information of each key point. Update this height information into the spatial vector, so that each key point has its precise position in the three-dimensional space. Subsequently, we use these key points as the vertices of the grid to construct a grid model. Each grid cell represents a part of the terrain in the construction area of the photovoltaic power station.

[0091] Secondly, key point classification and vector matrix construction: Considering that the photovoltaic panel may rotate to 60°, according to the layout and rotation angle of the photovoltaic panel, the key points are divided into three parts: both sides and the middle. The key points on both sides mainly meet the minimum ground clearance requirement of the photovoltaic panel, while the key points in the middle part need to meet both the minimum buried depth of the pile and the requirement that the buried depth does not exceed the damper. For these three parts of key points, we construct vector matrices respectively. Each vector matrix contains the vertex information of the grid cells formed by the key points in that part. In these vector matrices, each grid cell can be regarded as a small quadrilateral area, and its four vertices are exactly formed by the corresponding key points.

[0092] For further illustration, step S3 specifically includes the following steps:

[0093] Define the direction between the southwest corner P4 and the southeast corner P1 on the photovoltaic panel array as the x-axis direction, define the direction from the southwest corner P4 to the northwest corner P3 on the photovoltaic panel array as the z-axis, and the direction perpendicular to the photovoltaic panel array as the y-axis direction. According to the pile point position (x0, y0, z0) of the photovoltaic panel support driving column and the terrain slope trend of the current photovoltaic panel array location, fit a straight line, and use the slope of this straight line as the north-south tilt angle θ of the current photovoltaic panel array layout to determine the design ground:

[0094] sin(θ)x + cos(θ)z + sin(θ)x0 + cos(θ)z0 = 0

[0095] Where, x represents the x-coordinate of the design ground where the current photovoltaic panel array is located, and z represents the z-coordinate of the design ground where the current photovoltaic panel array is located.

[0096] It is known that the earthwork calculation is to level the photovoltaic panel array on the basis of adapting to the ground slope. The earthwork calculation in this application is to design a corresponding filled ground for different north-south tilt angles of the array layout. Therefore, the filled ground is designed according to the north-south tilt angle of the current array, in order to ensure that the designed filled ground is consistent with the direction of the photovoltaic panel array and the buried depth of each column is approximately the same.

[0097] For further illustration, step S4 specifically includes the following steps:

[0098] S41. Compare the natural height Z corresponding to each vertex of each grid with the height z of the design ground between each vertex of each grid and the natural ground, mark the grid vertices lower than the design ground height as fill status, and mark the grid vertices higher than the design ground height as excavation status; design Compare the natural height Z corresponding to each vertex of each grid with the height z of the design ground, mark the grid vertices lower than the design ground height as fill status, and mark the grid vertices higher than the design ground height as excavation status;

[0099] S42. According to the cut-and-fill status of each grid, including full fill, full excavation, one excavation and three fills, half excavation and half fill, and three excavations and one fill, and give corresponding earthwork calculation formulas for each cut-and-fill status of the grid:

[0100] S421. When the excavation and filling state of the grid is one excavation and three fillings or three excavations and one filling, find the zero boundary point (x zero , y zero ) on the grid boundary between the vertex in the excavation state and the vertex in the filling state through two adjacent vertices with different states in the current grid:

[0101]

[0102] where (x1, y1, z1) and (x2, y2, z2) represent the vertex in the excavation state and the vertex in the filling state respectively;

[0103]

[0104] where V 挖 represents the excavation volume, V 填 represents the filling volume, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z design of the designed ground, L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and S represents the area of the current grid in the x-axis and z-axis planes;

[0105] It should be noted that the calculation formula for the earthwork volume of the grid with the excavation and filling state of three fillings and one excavation is opposite to that of three excavations and one filling, that is, for three fillings and one excavation, it is necessary to calculate the excavation volume of 3 vertices in the excavation state and the filling volume of 1 vertex in the filling state.

[0106] S422. When the excavation and filling state of the grid is full excavation or full filling, the calculation of the excavation volume or filling volume is as follows:

[0107]

[0108] where V 挖 / 填 represents the excavation volume or filling volume, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z design of the designed ground, P1 represents the vertex in the southeast direction of the current grid, that is, the southeast corner of the photovoltaic panel array, P2 represents the vertex in the northeast direction of the current grid, that is, the northeast corner of the photovoltaic panel array, n represents the number of photovoltaic panels, wide represents the length of the grid in the east-west direction, that is, the width, and the widths of the vector matrices A i , vector matrix B i and vector matrix C i are all inconsistent;

[0109] S423. When the excavation and filling state of the grid is half excavation and half filling, the calculation of the excavation volume or filling volume is as follows:

[0110]

[0111] Wherein: V 挖 / 填 represents the excavation volume or filling volume, ΔH represents the difference between the natural height Z corresponding to the excavation vertex of the current grid and the natural ground and the height z of the designed ground design , θ represents the north-south tilt angle of the current photovoltaic panel array, L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and d represents the distance between two excavation vertices;

[0112] S43. Calculate the earthwork volume of each grid, and discard the excavation volume of the grids located in the vector matrix A i and the vector matrix C i . Add up the earthwork volumes of all grids to obtain the earthwork volume of the array, and then sum up all the array earthwork volumes to obtain all the earthwork volumes.

[0113] As Figure 2 shown, in the process of calculating the earthwork volume, according to the division of the grid model, we calculate the excavation volume and filling volume of each grid unit respectively. For the parts on both sides of the photovoltaic panel, since only the minimum ground clearance requirement needs to be met, we only calculate the excavation volume. For the middle part, since the buried depth of the pile and the limitation of the damper need to be met simultaneously, we need to calculate both the excavation volume and the filling volume. By accumulating the earthwork volume of each grid unit, we can obtain the total earthwork volume of the entire photovoltaic power station construction area.

[0114] A photovoltaic power station earthwork volume calculation system based on the grid method, which is applied to a photovoltaic power station earthwork volume calculation method based on the grid method as described above, includes:

[0115] A key point extraction module, which is used to receive the layout diagram of the photovoltaic panel array, extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panel in a ratio of 1:2:1;

[0116] A grid model construction module, which is used to perform ray detection based on the 3D terrain, obtain the key point elevation data, and construct a vector matrix and establish a grid model with each key point as the grid vertex;

[0117] A designed ground determination module, which is used to construct a designed ground based on the component ground clearance of the photovoltaic panel array and the north-south layout angle of the photovoltaic panel array;

[0118] An earthwork volume calculation module, which is used to calculate the earthwork volume of each grid according to the grid model and the designed ground, and at the same time discard the filling volume of the grids located on both outer sides of the components of the photovoltaic panel array, and solve the total earthwork volume.

[0119] The technical principle of the present invention has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be construed in any way as a limitation on the protection scope of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without creative efforts, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A method for calculating the earthwork volume of a photovoltaic power station based on the grid method, characterized in that, It includes the following steps: S1. Receive the layout diagram of the photovoltaic panel array, and extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panel in a ratio of 1:2:1; S2. Conduct ray detection based on the 3D terrain, obtain the elevation data of the key points, and construct a vector matrix and establish a grid model with each key point as the grid vertex; S3. Construct a design ground based on the ground clearance height of the components of the photovoltaic panel array and the north-south arrangement angle of the photovoltaic panel array; S4. According to the grid model and the design ground, calculate the earthwork volume of each grid, and at the same time discard the earthwork volume of the grids located on both outer sides of the components of the photovoltaic panel array, and solve the total earthwork volume.

2. The method for calculating the earthwork volume of a photovoltaic power station based on the grid method according to claim 1, characterized in that, The specific steps of S1 include the following: S11. Receive the layout diagram of the photovoltaic panel array, perform the minimum geometric boundary processing on each photovoltaic panel array, and obtain a photovoltaic panel array that is only composed of four vertices to form a rectangle; S12. Extract boundary points through the four vertices of each photovoltaic panel array, namely the southeast corner P1, the northeast corner P2, the northwest corner P3, and the southwest corner P4; S13. Extract key points based on linear interpolation between the southeast corner P1 and the northeast corner P2, and between the northwest corner P3 and the southwest corner P4 along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels: Among them, P i (12) represents the key point on the $i$-th photovoltaic panel close to the southeast corner $P1$ between the southeast corner $P1$ and the northeast corner $P2$ of the photovoltaic panel array, P i (43) represents the key point on the $i$-th photovoltaic panel close to the southwest corner $P4$ between the southwest corner $P4$ and the northwest corner $P3$ of the photovoltaic panel array, $i = 0, 1, 2, \ldots, n$, and $n$ represents the number of photovoltaic panels; S13. According to the characteristic that the minimum ground clearance is restricted after the photovoltaic panel rotates by 60°, and the rotation distance in the horizontal direction is the length of the photovoltaic panel Extract key points based on linear interpolation between the southeast corner P1 and the southwest corner P4 according to the length of the photovoltaic panel in a 1:2:1 ratio along the east-west direction of the photovoltaic panel array: Among them, P i (14) represents the key point near the southeast corner P1 on the i-th photovoltaic panel between the southeast corner P1 and the southwest corner P4 of the photovoltaic panel array, P i (41) represents the key point near the southwest corner P4 on the i-th photovoltaic panel between the southeast corner P1 and the southwest corner P4 of the photovoltaic panel array, and the order of the key points on the i-th photovoltaic panel from west to east is: P i (43), P i (41), P i (14), and P i (12).

3. A method for calculating the earthwork volume of a photovoltaic power station based on the grid method according to claim 2, characterized in that, The specific steps of S2 include the following: The grid is divided into three parts for constructing the vector matrix to consider the differences in the earthwork volume calculation rules between the inner and outer sides of the components of the photovoltaic panel: Among them, i represents the grid number.

4. A method for calculating the earthwork volume of a photovoltaic power station based on the grid method according to claim 3, characterized in that The specific steps of S3 include the following: Define the direction between the southwest corner P4 and the southeast corner P1 on the photovoltaic panel array as the x-axis direction, define the direction from the southwest corner P4 to the northwest corner P3 on the photovoltaic panel array as the z-axis, and the direction perpendicular to the photovoltaic panel array as the y-axis direction. Fit a straight line according to the pile point position (x0, y0, z0) of the photovoltaic panel support driving column and the terrain slope trend of the current photovoltaic panel array location, and use the slope of this straight line as the north-south tilt angle θ of the current photovoltaic panel array layout to determine the design ground: sin(θ)x + cos(θ)z + sin(θ)x0 + cos(θ)z0 = 0 Among them, x represents the x coordinate of the design ground where the current photovoltaic panel array is located, and z represents the z coordinate of the design ground where the current photovoltaic panel array is located.

5. A method for calculating the earthwork volume of a photovoltaic power station based on the grid method according to claim 4, characterized in that, The specific steps of S4 include the following: S41. Compare the natural height Z corresponding to each vertex of each grid and the natural ground with the height z of the designed ground. Mark the grid vertices lower than the designed ground height as filling state, and mark the grid vertices higher than the designed ground height as excavation state; design ​ S42. According to the excavation and filling status of each grid, including full filling, full excavation, one excavation and three fillings, half excavation and half filling, and three excavations and one filling, and give the corresponding earthwork volume calculation formula for each excavation and filling status of the grid: S421. When the excavation and filling state of the grid is one excavation and three fillings or three excavations and one filling, the zero boundary point (x zero , y zero ) on the grid boundary between the vertex in the excavation state and the vertex in the filling state is obtained by using two adjacent vertices with different states in the current grid: Among them, (x1, y1, z1) and (x2, y2, z2) respectively represent the vertices in the excavation state and the filling state; Among them, V 挖 represents the excavation volume, V 填 represents the filling volume, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z of the designed ground design , L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and S represents the area of the current grid in the x-axis and z-axis planes; S422. When the excavation and filling status of the grid is full excavation or full filling, the calculation of the excavation volume or filling volume is: Among them, V 挖 / 填 represents the volume of earth excavation or filling, ΔH represents the difference between the natural height Z corresponding to the current grid vertex and the natural ground and the height z of the designed ground design , θ represents the north-south tilt angle of the current photovoltaic panel array, P1 represents the vertex in the southeast direction of the current grid, i.e., the southeast corner of the photovoltaic panel array, P2 represents the vertex in the northeast direction of the current grid, i.e., the northeast corner of the photovoltaic panel array, n represents the number of photovoltaic panels, wide represents the length of the current grid in the east-west direction, which is the width, and the vector matrix A i , the vector matrix B i and the vector matrix C i have inconsistent widths; S423. When the excavation and filling status of the grid is half excavation and half filling, the calculation of the excavation volume or filling volume is: Where: V 挖 / 填 represents the amount of excavation or filling, ΔH represents the difference between the natural height Z corresponding to the excavation vertex of the current grid and the natural ground and the height z of the designed ground design , θ represents the north-south tilt angle of the current photovoltaic panel array, L1 and L2 represent the distances from the zero boundary point to the excavation vertex, and d represents the distance between two excavation vertices; S43. Calculate the earthwork volume of each grid, and discard the excavation volume of the grids located in vector matrix A i and vector matrix C i . Add up the earthwork volumes of all grids to obtain the earthwork volume of the array, and then sum up the earthwork volumes of all arrays to obtain all the earthwork volumes.

6. A photovoltaic power station earthwork calculation system based on the grid method, characterized in that, Applied to a method for calculating the earthwork volume of a photovoltaic power station based on the grid method as described in any one of claims 1-5, it includes: The key point extraction module is used to receive the layout diagram of the photovoltaic panel array, and extract the array boundary point features for each photovoltaic panel array, including sequentially extracting key points along the north-south direction of the photovoltaic panel array according to the number of photovoltaic panels, and extracting key points along the east-west direction of the photovoltaic panel array according to the length of the photovoltaic panel in a 1:2:1 ratio; The grid model construction module is used to perform ray detection based on the 3D terrain, obtain the elevation data of the key points, and construct a vector matrix and establish a grid model with each key point as the grid vertex; The designed ground determination module is used to construct the designed ground based on the height of the components of the photovoltaic panel array from the ground and the north-south arrangement angle of the photovoltaic panel array; The earthwork volume calculation module is used to calculate the earthwork volume of each grid according to the grid model and the designed ground, and at the same time discard the earthwork filling volume of the grids located on both outer sides of the components of the photovoltaic panel array to solve the total earthwork volume.

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