Photovoltaic power station AC / DC cable laying path determination method, device and equipment

Abstract

The invention provides a photovoltaic power station AC / DC cable laying path determination method, device and equipment, and the method comprises the steps: obtaining the position information of a target photovoltaic array, and enabling each photovoltaic panel in the target photovoltaic array to be installed on a support; determining a box transformer substation installation position in the target photovoltaic array; determining a bracket grouping scheme of the target photovoltaic array and an inverter mounting position in each bracket group; determining a direct-current cable laying path in each support group according to the support grouping scheme and the inverter mounting position in each support group; and determining an alternating current cable laying path of each support group according to the installation position of the box transformer substation and the installation position of the inverter in each support group. According to the scheme, an efficient and economical laying path result of the alternating-current and direct-current cable in the photovoltaic power station can be obtained.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and in particular to a method, apparatus and equipment for determining the laying path of AC and DC cables in a photovoltaic power station. Background Technology

[0002] In the construction of photovoltaic power plants, the laying of AC and DC cables is a crucial step affecting the power generation efficiency, construction costs, and ease of operation and maintenance. Current technologies mainly rely on two-dimensional plans or manual experience for laying cables, which presents the following technical challenges in practical applications: Inappropriate equipment positioning: The placement of the transformer substation and inverter lacks accurate modeling of the spatial position of the support frame and the terrain elevation, making it difficult to ensure that the distance between the transformer substation and all supports is balanced, which increases the length of cable laying and costs.

[0003] Unscientific bracket grouping: The grouping process does not fully integrate with the maintenance channel for reasonable zoning, which can easily lead to mismatch in the number of groups and scattered distribution of brackets within groups, resulting in redundant DC cable paths and high losses.

[0004] Cross-group wiring is difficult: when connecting across rows, the brackets around the auxiliary lines (such as maintenance channels) are not prioritized, resulting in long cross-row distances and high cable loss. Furthermore, the difference between underground and cable tray laying modes is not effectively distinguished.

[0005] The obstacle avoidance effect of AC cables is poor: the laying of AC cables does not make full use of auxiliary lines, the path planning is blind in the absence of auxiliary lines, and the obstacle avoidance design is not effectively combined with terrain obstacle information, which further increases the construction difficulty and cost.

[0006] Lack of comprehensive economic considerations: Path planning is often guided by a single objective (such as the shortest path) and does not incorporate the different cost factors of AC and DC cables into a unified economic optimization model. Summary of the Invention

[0007] This invention provides a method, apparatus, and equipment for determining the laying path of AC / DC cables in a photovoltaic power station, which can obtain efficient and economical laying path results for AC / DC cables in a photovoltaic power station.

[0008] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A method for determining the laying path of AC / DC cables for photovoltaic power plants includes: Obtain the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; Determine the installation location of the transformer substation within the target photovoltaic array; Determine the bracket grouping scheme for the target photovoltaic array and the inverter installation position within each bracket group; Based on the bracket grouping scheme and the inverter installation location within each bracket group, determine the DC cable laying path within each bracket group; Based on the installation location of the transformer substation and the installation location of the inverter within each bracket group, the AC cable laying path for each bracket group is determined.

[0009] Optionally, determining the installation location of the transformer substation within the target photovoltaic array includes: When there is no maintenance passage in the target photovoltaic array, the geometric center of the target photovoltaic array is determined as the installation location of the transformer substation. When a maintenance passage is set up within the target photovoltaic array, the outer envelope of the target photovoltaic array is determined; the point closest to the maintenance passage on the outer envelope is determined as the installation location of the transformer substation.

[0010] Optionally, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation positions within each bracket group includes: Determine the number of supports and the capacity of each support in the target photovoltaic array; The total capacity of the photovoltaic array is determined based on the number of supports and the capacity of each support. Obtain the inverter's capacity; The number of inverters in the target photovoltaic array is determined based on the capacity of the inverters and the total capacity of the photovoltaic array; the number of inverters is equal to the number of support groups, and one inverter is installed in each support group. Based on the number of support groups, the target photovoltaic array is clustered to obtain the support grouping scheme.

[0011] Optionally, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation position within each bracket group further includes: Determine at least one auxiliary line within the target photovoltaic array, the auxiliary line being set along the edge of the support group within the target photovoltaic array; When an auxiliary line is set at the edge of the target bracket group, the bracket closest to the auxiliary line and the transformer substation is determined as the installation position of the inverter. When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to the preset positioning strategy.

[0012] Optionally, when no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to a preset positioning strategy, including: When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter is determined within the target bracket group according to the preset strategy of the shortest path of DC and AC weighted sum.

[0013] Optionally, based on the bracket grouping scheme and the inverter installation location within each bracket group, the DC cable laying path within each bracket group is determined, including: Obtain the auxiliary lines of the bracket group edges, and identify the brackets adjacent to the auxiliary lines as cross-row connection objects; Based on the cross-row connection object, determine the DC laying path of all brackets in the bracket group that are in the same row or cross row as the inverter and the bracket where the inverter is located; When there are no auxiliary lines at the edge of the bracket group, determine the DC laying path of all brackets in the bracket group that are in the same row or across rows with the bracket where the inverter is located.

[0014] Optionally, based on the installation location of the transformer substation and the inverter installation location within each bracket group, the AC cable laying path for each bracket group is determined, including: Connect the transformer substation and the auxiliary line according to the shortest path principle, and add the connection to the existing connection set; Identify the inverter that is closest to an existing wiring in the existing wiring set, connect the inverter to the existing wiring, and add the wiring to the existing wiring set; Each inverter is connected sequentially to the existing wiring in the existing wiring set to obtain the AC cable laying path result.

[0015] The present invention also provides a device for determining the laying path of AC / DC cables for photovoltaic power plants, comprising: The acquisition module is used to acquire the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; The processing module is used to determine the installation location of the transformer substation in the target photovoltaic array; determine the bracket grouping scheme of the target photovoltaic array and the inverter installation location in each bracket group; determine the DC cable laying path in each bracket group based on the bracket grouping scheme and the inverter installation location in each bracket group; and determine the AC cable laying path in each bracket group based on the transformer substation installation location and the inverter installation location in each bracket group.

[0016] The present invention also provides a computing device, comprising: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method described above.

[0017] The present invention also provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described above.

[0018] The above-described solution of the present invention has at least the following beneficial effects: The above-described solution of the present invention obtains the location information of the target photovoltaic array, where each photovoltaic panel is installed on a support frame; determines the installation location of the transformer substation within the target photovoltaic array; determines the support frame grouping scheme of the target photovoltaic array and the inverter installation location within each support frame group; determines the DC cable laying path within each support frame group based on the support frame grouping scheme and the inverter installation location within each support frame group; and determines the AC cable laying path within each support frame group based on the transformer substation installation location and the inverter installation location within each support frame group. This results in an efficient and economical laying path for AC and DC cables within the photovoltaic power station. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the method for determining the AC / DC cable laying path in a photovoltaic power station according to an embodiment of the present invention. Figure 2 This is a planar schematic diagram of the AC / DC cable laying path results of the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention; Figure 3 This is a partial wiring diagram of bracket B in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention. Figure 4 This is a partial wiring diagram of bracket C in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention; Figure 5 This is a partial wiring diagram of bracket D in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention; Figure 6 This is a partial wiring diagram of bracket E in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the inverter bracket wiring in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention. Figure 8 This is a schematic diagram of the inverter parallel bracket wiring in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention. Figure 9 This is a schematic diagram of the inverter cross-line bracket wiring in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention. Figure 10 This is a schematic diagram of the DC laying path of the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the nearest point from the transformer substation to the auxiliary line in the method for determining the AC / DC cable laying path of a photovoltaic power station according to an embodiment of the present invention. Figure 12This is a flowchart of the DC cable laying path determination method for AC / DC cable laying in a photovoltaic power station according to an embodiment of the present invention. Figure 13 This is a flowchart of the AC cable laying path determination method for AC / DC cable laying in a photovoltaic power station according to an embodiment of the present invention. Figure 14 This is a structural diagram of the photovoltaic power station AC / DC cable laying path determination device according to an embodiment of the present invention. Detailed Implementation

[0020] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0021] like Figure 1 As shown, an embodiment of the present invention proposes a method for determining the laying path of AC / DC cables for photovoltaic power plants, including: Step 11: Obtain the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; Here, the target photovoltaic array has multiple supports, and photovoltaic panels are installed on the supports.

[0022] Step 12: Determine the installation location of the transformer substation in the target photovoltaic array; Here, the installation location of the transformer substation is determined based on the shape of the photovoltaic array and the layout of the maintenance access. One transformer substation is installed within each target photovoltaic array.

[0023] Step 13: Determine the bracket grouping scheme of the target photovoltaic array and the inverter installation position within each bracket group; Here, the support structures are grouped according to the shape of the photovoltaic array and the number of photovoltaic cells, so that the number of support structures in each group is as uniform as possible.

[0024] Step 14: Determine the DC cable laying path in each bracket group based on the bracket grouping scheme and the inverter installation location in each bracket group; Here, all brackets within the bracket group are connected to the inverter to obtain the DC cable laying path result.

[0025] Step 15: Determine the AC cable laying path for each bracket group based on the installation location of the transformer substation and the inverter installation location within each bracket group.

[0026] Here, the inverters of each bracket group are connected to the transformer substation via AC cables to obtain the AC cable laying path results.

[0027] This embodiment of the invention determines the location of the transformer substation and the support grouping based on the target photovoltaic array location information, and determines the inverter for each support group. The DC cable laying path and AC cable laying path are determined based on the inverter location. DC cables are laid according to the DC cable laying path, and AC cables are laid according to the AC cable laying path. This significantly improves the accuracy of cable length estimation, effectively avoids material waste caused by manual experience or simplified two-dimensional models, achieves full automation and economic optimization of the photovoltaic power station cable laying process, significantly improves design accuracy and efficiency, reduces construction costs, and has broad application prospects.

[0028] In an optional embodiment of the present invention, step 12, determining the installation location of the transformer substation in the target photovoltaic array, may include: Step 121: When there is no maintenance passage in the target photovoltaic array, the geometric center of the target photovoltaic array is determined as the installation location of the transformer substation. Here, the coordinates of the center points of all supports within the target photovoltaic array are obtained, and their geometric center point P1 is calculated. The geometric center point P1 is then determined as the installation location of the transformer substation to ensure that the distance between the transformer substation and each support is balanced.

[0029] Step 122: When a maintenance channel is set up within the target photovoltaic array, determine the outer envelope of the target photovoltaic array; determine the point closest to the maintenance channel on the outer envelope as the installation location of the transformer substation.

[0030] Here, if a maintenance access channel is provided within the target photovoltaic array, the transformer substation will be installed adjacent to the access channel. The point where the outer envelope of the target photovoltaic array is closest to the maintenance access channel will be determined as the installation location of the transformer substation.

[0031] In an optional embodiment of the present invention, step 13, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation position within each bracket group, may include: Step 131: Determine the number of supports and the capacity of each support in the target photovoltaic array; Here, the number of supports for the target photovoltaic array and the capacity of each support are fixed.

[0032] Step 132: Determine the total capacity of the photovoltaic array based on the number of supports and the capacity of each support; Here, the total capacity of the photovoltaic array is obtained by multiplying the number of supports by the support capacity.

[0033] Step 133: Obtain the inverter capacity; Step 134: Determine the number of inverters in the target photovoltaic array based on the capacity of the inverters and the total capacity of the photovoltaic array; the number of inverters is equal to the number of bracket groups, and one inverter is set in each bracket group; Here, the total capacity of the photovoltaic array is divided by the capacity of the inverters to obtain the number of inverters. The number of inverters is equal to the number of support bracket groups.

[0034] Step 135: Based on the number of bracket groups, cluster the target photovoltaic array to obtain the bracket grouping scheme.

[0035] Here, based on the determined number of support groups and the shape of the target photovoltaic array, the supports are clustered, and all supports are evenly distributed among the support groups to obtain a support grouping scheme. Specifically, firstly, K supports are randomly selected as initial cluster centers, and then the following steps are iteratively performed: In the allocation phase, the distance from each support to all centers is calculated, but the current number of allocated supports in each group must be considered. Supports are preferentially allocated to the group with the closest distance and whose current number does not exceed the average upper limit. If the closest group is full, the next closest unfilled group is selected to ensure that the number of supports in each group is balanced. After allocation, the center of each group is updated to the average position of all supports in that group. This process is repeated until the center point no longer changes or the maximum number of iterations is reached, finally obtaining a support grouping scheme in which the number of supports in each group is similar and spatially clustered.

[0036] like Figure 2 As shown, the target photovoltaic array is divided into 10 groups. Each square in the figure represents a photovoltaic panel, and each photovoltaic panel corresponds to four supports. The dashed lines represent different groups.

[0037] In an optional embodiment of the present invention, step 13, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation position within each bracket group, further includes: Step 136: Determine at least one auxiliary line within the target photovoltaic array, wherein the auxiliary line is set along the edge of the support group within the target photovoltaic array; Here, the auxiliary lines are as follows: Figure 2 As shown, the auxiliary lines are set along the edges of each group.

[0038] Step 137: When the auxiliary line is set at the edge of the target bracket group, the bracket closest to the auxiliary line and the transformer substation is determined as the installation position of the inverter. Here, when there are auxiliary lines at the edge of the bracket group, the first principle for inverter positioning is to set it in a position adjacent to the auxiliary lines and closest to the transformer.

[0039] Step 138: When no auxiliary lines are set at the edge of the target bracket group, determine the installation position of the inverter within the target bracket group according to the preset positioning strategy.

[0040] Specifically, step 138 may include: Step 1381: When no auxiliary lines are set at the edge of the target bracket group, determine the installation position of the inverter within the target bracket group according to the preset strategy of the shortest path of DC and AC weighted sum.

[0041] Here, the DC path calculation is as follows: Figures 3 to 6 As shown, there are 9 brackets from A to I. When the inverter is located on bracket A, the total length of the DC path is L = A+B+C+D+E+F+G+H+I. Brackets B and C are in the same row as A, so their lengths do not need to be multiplied by a coefficient. However, brackets D, E, F, G, H, and I involve crossing rows. Crossing rows requires underground or cable tray installation, which is more expensive than the same row path. Therefore, the path length of the crossing row section needs to be multiplied by a coefficient.

[0042] For AC path calculation, the straight-line distance between the center point of support A, B, C, D, E, F, G, H, and I and the transformer box is directly calculated.

[0043] Finally, based on the calculation principles for DC and AC paths, the weighted sum of DC and AC paths T for the inverter located on other supports is calculated. Since DC and AC have different economic advantages, a weighting coefficient i needs to be considered, which is the ratio of the cost of the AC cable to the cost of the DC cable.

[0044] The DC and AC weighted sum path T = DC length + AC length * coefficient i, and the bracket with the smallest weighted sum T is taken as the inverter installation position.

[0045] In an optional embodiment of the present invention, step 14, determining the DC cable laying path within each bracket group based on the bracket grouping scheme and the inverter installation location within each bracket group, may include: Step 141: Obtain the auxiliary line of the edge of the bracket group, and determine the bracket adjacent to the auxiliary line as the cross-row connection object; Here, the photovoltaic array is divided into rows, and the set of supports closest to the auxiliary line is selected as the priority for cross-row connection; the vertical distance from each photovoltaic array support point (index=2 left support point or index=4 right support point) to the auxiliary line is calculated; support points with a distance less than the threshold (default 5 meters) are marked as "close to the auxiliary line"; grouped by row number, the two farthest points in each row are retained as cross-row connection candidate points.

[0046] Step 142: Based on the cross-row connection object, determine the DC laying path of all brackets in the bracket group that are in the same row or cross row as the inverter and the bracket where the inverter is located. Here, firstly, five characteristic points of each bracket are calculated: the leftmost edge point, the left mounting point, the center point, the right mounting point, and the rightmost edge point; then, all brackets in the current array are connected to the inverter of the current group; when the DC cable path is determined, if the bracket and the inverter are in the same row, they are laid overhead; when connecting across rows, the cross-row section is laid underground or in a cable tray.

[0047] Specifically, such as Figure 7 As shown, first complete the wiring of the bracket where the inverter is located. Then, as... Figure 8 As shown, connect all the brackets in the row where the inverter is located to the inverter; For a path within the same row, find the nearest support point (index=2 or index=4) of the photovoltaic array where the inverter is located, and mark it as the inverter connection point; connect the inverter to this support point, using PVC pipe for the vertical part and along the main beam of the photovoltaic array for the horizontal part; connect other points of the same photovoltaic array to the left and right sequentially from the inverter connection point; recursively connect other photovoltaic panels in the same row to the left and right sides; each newly connected point inherits all historical paths of the connected point.

[0048] When making cross-row connections, the brackets of unconnected rows are connected to the brackets of connected rows, and the cross-row connection is achieved through the cross-row connection object. A distance coefficient is set during cross-row connections: if both connecting brackets are located next to the auxiliary line, the distance coefficient is 1; if neither is located next to the auxiliary line, the distance coefficient is 10, ensuring that cross-row underground connections are prioritized along the auxiliary line. Cross-line path such as Figure 9 As shown, initialize the set of connected points (including inverter connection points); loop until all photovoltaic arrays are connected, and traverse all support points in the connected and unconnected sets; prioritize the calculation of point pairs close to the auxiliary line; calculate the distance of ordinary point pairs = height difference + horizontal distance across rows × distance coefficient (10) + historical path length; select the point pair with the shortest total distance for connection; select the connection method (inverter / buried point / support point) according to the type of the connected point.

[0049] Step 143: When there are no auxiliary lines at the edge of the bracket group, determine the DC routing path of all brackets in the bracket group that are aligned or cross rows with the bracket where the inverter is located. Here, when there are no auxiliary lines at the edge, the brackets in the group are connected to the inverter according to the principle of the shortest DC path.

[0050] like Figure 10 As shown, the specific implementation is as follows: skip the auxiliary line priority logic; directly calculate the normal distance of all point pairs, distance = height difference + horizontal distance × tolerance coefficient (default 10) + historical path length, and select the point pair with the shortest total distance to connect.

[0051] In an optional embodiment of the present invention, step 15, determining the AC cable laying path for each bracket group based on the installation location of the transformer substation and the inverter installation location within each bracket group, may include: like Figure 11 As shown, in step 151, the transformer substation and the auxiliary line are connected according to the principle of the shortest path, and the connection is added to the existing connection set; Step 152: Determine the inverter that is closest to the existing wiring in the existing wiring set, connect the inverter to the existing wiring, and add the wiring to the existing wiring set; Specific implementation: Initialize the connected set (including inverter connection points); loop until all inverters are connected: obtain all support points in the connected and unconnected sets; traverse all point pair combinations and calculate the distance; select the point pair with the shortest total distance; connect the new inverter to the existing wiring and generate path points; add the new inverter to the existing wiring set.

[0052] Step 153: Connect each inverter to the existing wiring in the existing wiring set in sequence to obtain the AC cable laying path result.

[0053] Here, each inverter group is traversed, including: obtaining inverter information and location; obtaining the group photovoltaic array set; obtaining the path point set close to the auxiliary line; executing the shortest path algorithm in step 152; rendering and saving the path results.

[0054] In this embodiment, the auxiliary line is first interpolated to ensure that path nodes exist around the inverter and the transformer substation. Then, an automatic road algorithm is used to generate the path from the transformer substation to the nearest point on the auxiliary line. The inverter closest to the current auxiliary line and existing paths is selected. The position of the inverter is offset to avoid the cable path directly connecting to the support structure. The path from the inverter to the nearest point on the auxiliary line and the path from the nearest point on the auxiliary line to the nearest point on the transformer substation are generated. The generated path points are deduplicated to obtain the AC cable laying path result.

[0055] The following is combined Figure 12 and Figure 13 The specific implementation process of the above method of the present invention is described below: Step 12, Determine the location of the transformer substation. Array Center: Obtain the coordinates of the center point of all supports in the photovoltaic power station, calculate its geometric center point P1, and set the transformer box at position P1 to ensure that the distance between the transformer box and each support is balanced; Placement near the road: Find the outer envelope of the target photovoltaic array, calculate the point P1 closest to the road, and take P1 as the location of the transformer.

[0056] Step 13, determine the stent grouping scheme Determine the number of bracket groups, obtain the auxiliary lines marked as maintenance channels in the interface auxiliary line table. Each maintenance channel is unique and is selected manually each time. If a maintenance access route exists, the photovoltaic array is divided into left and right sections based on the route. The left and right sections are further subdivided according to the number of groups and the number of supports within each group, ensuring that support groups do not cross maintenance access routes as much as possible. The supports after maintenance access route processing are then clustered, following the "nearest clustering" principle. The clustering results are then adjusted a second time to ensure that each cluster meets the requirements for individual grouping. The scaffolding is grouped by using a top-down S-shaped traversal method.

[0057] Step 13, Determine the inverter location When there are auxiliary lines at the edge of the current group, the first principle for inverter positioning is that it needs to be located next to the auxiliary lines; When there are no auxiliary lines at the edge of the current group, the following three positioning strategies are used to calculate the optimal inverter installation position: DC Shortest Strategy: Calculate the total distance between all supports and all other supports in the group. When calculating the cross-row distance, an additional weighting coefficient is added. The weighting coefficient is the ratio of the cost of AC cable to the cost of DC cable, which can be set manually. Shortest AC cable laying strategy: Calculate the distance of all supports in the group from the transformer to simulate the AC cable laying path length; Economically optimal strategy: Calculate the weighted sum of DC path length and AC path length, with the weighting coefficient being the ratio of AC cable cost to DC cable cost, which can be manually set; After determining the mounting bracket for the inverter, place the inverter on one side of the bracket's mounting position.

[0058] Step 14, DC cable laying path Extract the auxiliary lines of the photovoltaic array and divide the photovoltaic array into rows; select the set of supports closest to the auxiliary lines as the priority for cross-row connection; Calculate five feature points for each bracket: the leftmost edge point, the left mounting point, the center point, the right mounting point, and the rightmost edge point; For cable wiring, to achieve cross-group wiring, all brackets within the current bracket group are connected to the inverter in the current group. First, complete the wiring of the bracket containing the inverter; then connect all brackets in the row containing the inverter to the inverter. When connecting across rows, connect brackets in rows that are not yet wired to brackets in rows that are already wired. Set a distance coefficient for cross-row connections: if both connecting brackets are located next to the auxiliary line, the distance coefficient is 1; if neither is located next to the auxiliary line, the distance coefficient is 10, ensuring that cross-row underground connections are prioritized along the auxiliary line. When there are no auxiliary lines at the edge of the bracket group, connect all brackets in the bracket group to the inverter in the order of the bracket where the inverter is located, the bracket in the same row as the inverter, and the bracket across rows of the inverter, according to the principle of the shortest DC path.

[0059] Different wiring operations are performed depending on the connection type. When connecting an inverter across rows, the wiring path extends only to the inverter; when connecting a buried unit across rows, the wiring path extends only to the buried point; when connecting a bracket across rows, the wiring path extends to the designated wiring position of the target bracket.

[0060] Repeat the above wiring steps until all brackets in the current array have formed a complete path to the inverter of the current group; extract the brackets and corresponding paths of the current group and save them, discarding the paths of brackets in other groups.

[0061] Step 15, AC cable laying path Extract auxiliary lines from the photovoltaic array, obtain obstacle information within the power station, and design path obstacle avoidance using a mountain road algorithm; Perform AC cable wiring: The auxiliary lines are interpolated to ensure that path nodes exist around the inverter and the transformer substation; Generate the path from the transformer substation to the nearest point on the auxiliary line; Select the inverter that is closest to the current auxiliary line and existing path; offset the location of the inverter to prevent the cable path from directly connecting to the support structure. Generate the path from the inverter to the nearest point on the auxiliary line, generate the path from the nearest point on the auxiliary line to the nearest point on the transformer substation, and perform deduplication on the generated path points; Complete the planning and storage of all AC cable routes.

[0062] Output results: CAD wiring diagram (dwg format), engineering quantity statistics table (csv format), and AC / DC cable inventory table (csv format).

[0063] The embodiments of this invention achieve scientific grouping of supports by automatically locating transformer substation locations, combining maintenance channel zoning and clustering adjustments to ensure reasonable grouping; and determine the optimal installation location of the inverter, taking into account both the shortest DC path and the shortest AC path, as well as economy. All path planning is automatically calculated based on the precise coordinates of the supports in three-dimensional space and the laying elevation, significantly improving the accuracy of cable length estimation and effectively avoiding material waste caused by manual experience or simplified two-dimensional models. During DC cable laying, cross-row connections are prioritized by selecting supports next to auxiliary lines, and the path extension rules are dynamically adjusted according to different connection types (inverter / buried point / support), achieving cross-group wiring while shortening the cable laying path and reducing material consumption. The method of this invention automates everything from support grouping and equipment positioning to AC / DC cable path generation, greatly reducing manual intervention, improving design efficiency and result consistency, facilitating subsequent operation and maintenance, and has broad application prospects.

[0064] like Figure 14 As shown, an embodiment of the present invention also provides a photovoltaic power station AC / DC cable laying path determination device 140, comprising: The acquisition module 141 is used to acquire the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; Processing module 142 is used to determine the installation location of the transformer substation in the target photovoltaic array; determine the bracket grouping scheme of the target photovoltaic array and the inverter installation location in each bracket group; determine the DC cable laying path in each bracket group according to the bracket grouping scheme and the inverter installation location in each bracket group; and determine the AC cable laying path in each bracket group according to the transformer substation installation location and the inverter installation location in each bracket group.

[0065] Optionally, determining the installation location of the transformer substation within the target photovoltaic array includes: When there is no maintenance passage in the target photovoltaic array, the geometric center of the target photovoltaic array is determined as the installation location of the transformer substation. When a maintenance passage is set up within the target photovoltaic array, the outer envelope of the target photovoltaic array is determined; the point closest to the maintenance passage on the outer envelope is determined as the installation location of the transformer substation.

[0066] Optionally, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation positions within each bracket group includes: Determine the number of supports and the capacity of each support in the target photovoltaic array; The total capacity of the photovoltaic array is determined based on the number of supports and the capacity of each support. Obtain the inverter's capacity; The number of inverters in the target photovoltaic array is determined based on the capacity of the inverters and the total capacity of the photovoltaic array; the number of inverters is equal to the number of support groups, and one inverter is installed in each support group. Based on the number of support groups, the target photovoltaic array is clustered to obtain the support grouping scheme.

[0067] Optionally, determining the bracket grouping scheme of the target photovoltaic array and the inverter installation position within each bracket group further includes: Determine at least one auxiliary line within the target photovoltaic array, the auxiliary line being set along the edge of the support group within the target photovoltaic array; When an auxiliary line is set at the edge of the target bracket group, the bracket closest to the auxiliary line and the transformer substation is determined as the installation position of the inverter. When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to the preset positioning strategy.

[0068] Optionally, when no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to a preset positioning strategy, including: When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter is determined within the target bracket group according to the preset strategy of the shortest path of DC and AC weighted sum.

[0069] Optionally, based on the bracket grouping scheme and the inverter installation location within each bracket group, the DC cable laying path within each bracket group is determined, including: Obtain the auxiliary lines of the bracket group edges, and identify the brackets adjacent to the auxiliary lines as cross-row connection objects; Based on the cross-row connection object, determine the DC laying path of all brackets in the bracket group that are in the same row or cross row as the inverter and the bracket where the inverter is located; When there are no auxiliary lines at the edge of the bracket group, determine the DC laying path of all brackets in the bracket group that are in the same row or across rows with the bracket where the inverter is located.

[0070] Optionally, based on the installation location of the transformer substation and the inverter installation location within each bracket group, the AC cable laying path for each bracket group is determined, including: Connect the transformer substation and the auxiliary line according to the shortest path principle, and add the connection to the existing connection set; Identify the inverter that is closest to an existing wiring in the existing wiring set, connect the inverter to the existing wiring, and add the wiring to the existing wiring set; Each inverter is connected sequentially to the existing wiring in the existing wiring set to obtain the AC cable laying path result.

[0071] It should be noted that this device is the same as the method described above. All implementations in the above method embodiments are applicable to the embodiments of this device and can achieve the same technical effect.

[0072] Embodiments of the present invention also provide a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method as described above. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0073] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0074] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0075] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0076] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0077] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0078] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0079] Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of the present invention. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0080] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a known general-purpose device. Therefore, the object of the present invention can also be achieved simply by providing a program product containing program code implementing the method or apparatus. That is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent to the present invention. Furthermore, the steps performing the above series of processes can naturally be performed in the order described, but are not necessarily required to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0081] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining the laying path of AC / DC cables in a photovoltaic power station, characterized in that, include: Obtain the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; Determine the installation location of the transformer substation within the target photovoltaic array; Determine the bracket grouping scheme for the target photovoltaic array and the inverter installation position within each bracket group; Based on the bracket grouping scheme and the inverter installation location within each bracket group, determine the DC cable laying path within each bracket group; Based on the installation location of the transformer substation and the installation location of the inverter within each bracket group, the AC cable laying path for each bracket group is determined.

2. The method for determining the laying path of AC / DC cables for photovoltaic power plants according to claim 1, characterized in that, Determining the installation location of the transformer substation within the target photovoltaic array includes: When there is no maintenance passage in the target photovoltaic array, the geometric center of the target photovoltaic array is determined as the installation location of the transformer substation. When a maintenance passage is set up within the target photovoltaic array, the outer envelope of the target photovoltaic array is determined; the point closest to the maintenance passage on the outer envelope is determined as the installation location of the transformer substation.

3. The method for determining the laying path of AC / DC cables for photovoltaic power plants according to claim 1, characterized in that, Determining the bracket grouping scheme for the target photovoltaic array and the inverter installation positions within each bracket group includes: Determine the number of supports and the capacity of each support in the target photovoltaic array; The total capacity of the photovoltaic array is determined based on the number of supports and the capacity of each support. Obtain the inverter's capacity; The number of inverters in the target photovoltaic array is determined based on the capacity of the inverters and the total capacity of the photovoltaic array; the number of inverters is equal to the number of support groups, and one inverter is installed in each support group. Based on the number of support groups, the target photovoltaic array is clustered to obtain the support grouping scheme.

4. The method for determining the laying path of AC / DC cables for photovoltaic power plants according to claim 3, characterized in that, Determining the bracket grouping scheme for the target photovoltaic array and the inverter installation positions within each bracket group also includes: Determine at least one auxiliary line within the target photovoltaic array, the auxiliary line being set along the edge of the support group within the target photovoltaic array; When an auxiliary line is set at the edge of the target bracket group, the bracket closest to the auxiliary line and the transformer substation is determined as the installation position of the inverter. When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to the preset positioning strategy.

5. The method for determining the laying path of AC / DC cables for photovoltaic power stations according to claim 4, characterized in that, When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter within the target bracket group is determined according to a preset positioning strategy, including: When no auxiliary lines are set at the edge of the target bracket group, the installation position of the inverter is determined within the target bracket group according to the preset strategy of the shortest path of DC and AC weighted sum.

6. The method for determining the laying path of AC / DC cables for photovoltaic power plants according to claim 1, characterized in that, Based on the bracket grouping scheme and the inverter installation location within each bracket group, the DC cable laying path within each bracket group is determined, including: Obtain the auxiliary lines of the bracket group edges, and identify the brackets adjacent to the auxiliary lines as cross-row connection objects; Based on the cross-row connection object, determine the DC laying path of all brackets in the bracket group that are in the same row or cross row as the inverter and the bracket where the inverter is located; When there are no auxiliary lines at the edge of the bracket group, determine the DC laying path of all brackets in the bracket group that are in the same row or across rows with the bracket where the inverter is located.

7. The method for determining the laying path of AC / DC cables for photovoltaic power stations according to claim 4, characterized in that, Based on the installation location of the transformer substation and the inverter installation location within each bracket group, the AC cable laying path for each bracket group is determined, including: Connect the transformer substation and the auxiliary line according to the shortest path principle, and add the connection to the existing connection set; Identify the inverter that is closest to an existing wiring in the existing wiring set, connect the inverter to the existing wiring, and add the wiring to the existing wiring set; Each inverter is connected sequentially to the existing wiring in the existing wiring set to obtain the AC cable laying path result.

8. A device for determining the laying path of AC / DC cables in a photovoltaic power station, characterized in that, include: The acquisition module is used to acquire the location information of the target photovoltaic array, wherein each photovoltaic panel in the target photovoltaic array is installed on a bracket; The processing module is used to determine the installation location of the transformer substation in the target photovoltaic array; Determine the bracket grouping scheme for the target photovoltaic array and the inverter installation location within each bracket group; determine the DC cable laying path within each bracket group based on the bracket grouping scheme and the inverter installation location within each bracket group; determine the AC cable laying path within each bracket group based on the transformer substation installation location and the inverter installation location within each bracket group.

9. A computing device, characterized in that, include: A processor, a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A storage instruction that, when executed on a computer, causes the computer to perform the method as described in any one of claims 1 to 7.

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