A processing method and device for offshore photovoltaic cable laying modeling

Abstract

The present disclosure provides a processing method and device for offshore photovoltaic cable laying modeling, relating to the technical field of computer-aided design, which comprises: constructing a set of topological reference elements according to inverter nodes, transformer nodes and cable channels; determining the initial path of the inverter node according to the corresponding outgoing line reference surface, target channel path and local reference geometric feature of the inverter node; determining the target path of the inverter node and the three-dimensional space chamfer according to the transformer reference surface and the initial path; performing bidirectional topological clipping on the transformer joint line and the target path according to the three-dimensional space chamfer to obtain the clipped target path segment and the clipped transformer joint line segment; assembling all three-dimensional space chamfers, clipped target path segments and clipped transformer joint line segments into a composite cable center skeleton track, and generating a cable three-dimensional model based on the composite cable center skeleton track. The present disclosure can realize the efficiency and accuracy of offshore photovoltaic cable laying modeling.

Description

Technical Field

[0001] This disclosure relates to the field of computer-aided design technology, and in particular to a processing method and apparatus for modeling offshore photovoltaic cable laying. Background Technology

[0002] As offshore photovoltaic projects develop towards intensification and large capacity, the large-scale application of string inverters has made 3D modeling of dense cable laying on water a crucial part of the entire project design. To improve design accuracy and the synergy of 3D models, the industry now widely adopts general-purpose 3D design platforms with strong parametric modeling capabilities, such as CATIA V6, for cable laying path design.

[0003] However, when faced with densely distributed inverter nodes, existing parametric design methods and conventional automated installation tools based on software architecture struggle to achieve efficient and accurate modeling. First, because inverters, transformer substations, and wiring channels are distributed across completely different heterogeneous levels in the software tree structure, current practices rely on manual cross-level queries, reading of local coordinate offset values, and manual projection alignment. This approach is extremely inefficient when dealing with hundreds or thousands of inverter nodes and is highly susceptible to spatial misalignment of the initial installation baseline due to human error. Second, due to the randomness of inverter installation orientations, existing software uses rigid, straight-line connections, which cannot make adaptive current distribution decisions. This results in penetration interference between closely spaced devices and suspended connections between distant devices, easily leading to overlapping and conflicting installation trajectories. Finally, since the cable trunk line and the only transformer substation connection line are usually non-coplanar and non-intersecting spatial scattered lines in three-dimensional space, the lack of a spatial support plane to fit will directly trigger a deadlock in the underlying boundary calculation of the geometry engine, causing the program to crash. In order to avoid the crash, the practice of truncation in advance and manual hard-wired repair will trigger a topology overlap deadlock due to repeated inclusion of overlapping geometric elements, or topology breakage due to missing the residual small line segments after truncation, ultimately causing the automatic filling of the cable three-dimensional solid model to fail. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a processing method and apparatus for modeling offshore photovoltaic cable laying, which achieves high efficiency and accuracy in offshore photovoltaic cable laying modeling.

[0005] According to a first aspect of the present disclosure, a processing method for modeling offshore photovoltaic cable laying is provided, the method comprising: Based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node, and cable channel, a topology reference element set is constructed, which includes inverter reference line, transformer substation junction line, transformer substation reference surface, horizontal channel path, and vertical channel path. The horizontal and vertical channel paths in the set of topological reference elements are respectively subjected to topological joining processing. Based on the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path, the joined channel paths are sorted to obtain the rearranged channel path corresponding to the inverter node. The target channel path and outgoing reference surface corresponding to the inverter node are determined based on the rearranged channel path. The initial path corresponding to the inverter node is determined based on the outgoing reference surface corresponding to the inverter node, the target channel path, and the local reference geometric features. The target path and three-dimensional chamfer corresponding to the inverter node are determined based on the transformer substation reference surface and the initial path; bidirectional topology trimming is performed on the transformer substation junction line and the target path of the inverter node based on the three-dimensional chamfer, to obtain the trimmed target path segment and the trimmed transformer substation junction line segment corresponding to the inverter node. All the three-dimensional space chamfers, the cut target passage segment, and the cut box-type transformer junction segment are assembled into a composite cable center skeleton trajectory, and a three-dimensional cable model is generated based on the composite cable center skeleton trajectory.

[0006] In one exemplary embodiment of this disclosure, the step of constructing a topology reference element set based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node, and cable channel includes: Obtain the lower-level sub-product levels corresponding to the inverter node, the transformer substation node, and the cable channel, and obtain the geometric feature set contained in each sub-product level; Based on the preset feature names, local reference points, local reference lines, and local reference surfaces corresponding to the preset feature names are selected from the set of geometric features; and the local reference points, local reference lines, and local reference surfaces are determined as local reference geometric features. Obtain the position offset value of each of the sub-product levels, transform the local reference geometric features to a preset coordinate system based on the position offset value, and reconstruct the features of the local reference point, the local reference line and the local reference surface based on the preset coordinate system to obtain the inverter reference line, the transformer substation connection line, the transformer substation reference surface, the horizontal channel path and the vertical channel path.

[0007] In one exemplary embodiment of this disclosure, sorting the joined channel paths to obtain the rearranged channel paths corresponding to the inverter node includes: Based on the spatial extension direction of the joined cable channel, the joined channel path is divided into a horizontal channel path and a vertical channel path; Obtain the distance value from the inverter reference line to the joined channel path; Based on the distance value, the horizontal channel path is sorted in ascending order from smallest to largest, and the vertical channel path is sorted in descending order from largest to smallest, to generate the rearranged channel path corresponding to the inverter node.

[0008] In an exemplary embodiment of this disclosure, determining the target channel path and outgoing reference plane corresponding to the inverter node based on the rearranged channel path includes: Based on the comparison between the shortest spatial distance corresponding to the inverter node and the preset distance threshold, the target channel path and outgoing reference plane corresponding to the inverter node are determined.

[0009] In one exemplary embodiment of this disclosure, determining the target channel path and outgoing reference plane corresponding to the inverter node based on the comparison result of the shortest spatial distance corresponding to the inverter node and a preset distance threshold includes: Obtain the rearranged horizontal channel path and the rearranged vertical channel path from the rearranged channel paths corresponding to the inverter node; If the shortest spatial distance corresponding to the inverter node is less than a preset distance threshold, the rearranged vertical channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is determined as the target channel path. At the same time, the outgoing line orientation is determined according to the arrangement posture of the inverter node in the first direction. If the outgoing line orientation is parallel to the target channel path, the horizontal reference plane in the first direction is determined as the outgoing line reference plane. If the outgoing line orientation is not parallel to the target channel path, the vertical reference plane in the second direction is determined as the outgoing line reference plane corresponding to the inverter node. If the shortest spatial distance corresponding to the inverter node is greater than or equal to the preset distance threshold, then the rearranged horizontal channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is determined as the target channel path; at the same time, the vertical reference plane of the inverter node is obtained, and the outgoing line reference plane is determined according to the spatial orientation of the vertical reference plane.

[0010] In an exemplary embodiment of this disclosure, determining the initial path corresponding to the inverter node based on the outgoing reference plane corresponding to the inverter node, the target channel path, and the local reference geometry features includes: The intersection of the outgoing reference surface and the target channel path is processed to obtain a spatial intersection point, and a connecting spline is generated based on the spatial intersection point and the local reference geometric features. The target channel path is cut according to the spatial intersection point to obtain the target reserved channel path. The connecting spline is then topologically spliced ​​with the target reserved channel path to obtain the initial path corresponding to the inverter node.

[0011] In one exemplary embodiment of this disclosure, determining the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer substation reference surface and the initial path includes: Based on the intersection processing of the transformer substation reference plane and the initial path, the end intersection point corresponding to the inverter node is determined, and the connecting line segment corresponding to the inverter node is constructed based on the end intersection point and the starting point of the transformer substation junction line. Combine the connecting line segments corresponding to the inverter node into the initial path corresponding to the inverter node to obtain the target path corresponding to the inverter node; Based on the spatial shape characteristics of the connection segment between the transformer substation junction line and the inverter node at the docking point, determine the spatial chamfer support surface and the three-dimensional spatial chamfer corresponding to the inverter node.

[0012] In an exemplary embodiment of this disclosure, determining the spatial chamfer support surface and three-dimensional spatial chamfer corresponding to the inverter node at the docking point based on the spatial shape characteristics of the connecting line segment between the transformer substation and the inverter node includes: Obtain the tangent line at the break point of the transformer substation junction line and the tangent line at the endpoint of the connecting line segment corresponding to the inverter node. Construct a spatial double-line plane based on the tangent lines at the endpoints of both, and determine the spatial chamfer support surface based on the spatial double-line plane. Based on the spatial chamfered support surface corresponding to the inverter node, and using the connecting line segment corresponding to the inverter node and the junction line of the transformer substation as the guiding boundary, a corresponding three-dimensional spatial chamfer is generated.

[0013] According to a second aspect of the present disclosure, a processing apparatus for modeling offshore photovoltaic cable laying is provided, comprising: The construction module is used to construct a topology reference element set based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node and cable channel. The topology reference element set includes inverter reference line, transformer substation junction line, transformer substation reference surface, horizontal channel path and vertical channel path. The sorting module is used to perform topological joining processing on the horizontal and vertical channel paths in the topological reference element set, and sort the joined channel paths according to the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path to obtain the rearranged channel path corresponding to the inverter node. The determination module is used to determine the target channel path and outgoing reference surface corresponding to the inverter node based on the rearranged channel path, and to determine the initial path corresponding to the inverter node based on the outgoing reference surface corresponding to the inverter node, the target channel path, and the local reference geometric features. The trimming module is used to determine the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer reference surface and the initial path; and to perform bidirectional topology trimming on the transformer junction line and the target path of the inverter node based on the three-dimensional chamfer to obtain the trimmed target path segment and the trimmed transformer junction line segment corresponding to the inverter node. The generation module is used to assemble all the three-dimensional space chamfers, the cut target passage segments, and the cut transformer substation connection segments into a composite cable center skeleton trajectory, and generate a three-dimensional cable model based on the composite cable center skeleton trajectory.

[0014] According to a third aspect of the present disclosure, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the above-described method.

[0015] This disclosure provides a processing method and apparatus for modeling offshore photovoltaic cable laying. By acquiring the local reference geometric features and offset transformation matrices corresponding to the inverter nodes, transformer substation nodes, and each node in the cable channel selected by the user, a topological reference element set is constructed, including inverter reference lines, transformer substation connection lines, transformer substation reference surfaces, horizontal channel paths, and vertical channel paths. This enables cross-product, multi-level assembly offset conversion, unifying the spatial design reference between heterogeneous components. Compared to the conventional method of relying on manual cross-level querying, reading, and manual projection, it shortens the initial geometric alignment path, improves the efficiency and accuracy of laying reference construction, and avoids spatial misalignment of design references caused by human reading errors.

[0016] Furthermore, by performing topological joining processing on the horizontal and vertical channel paths respectively, and sorting them according to the shortest spatial distance between the inverter reference line and the joined channel paths, a rearranged channel path is obtained, providing a clear channel proximity index sequence for each heterogeneous node. Based on this, the corresponding target channel path and outgoing reference surface are determined, and the initial path is determined by combining local reference geometric features. Thus, adaptive traffic splitting decision based on actual physical spacing is realized, allowing devices farther from the main channel to be matched with laying paths including horizontal transition supports, while devices closer to the main channel are automatically matched with direct connection paths, avoiding trajectory crossing conflicts when densely laid using conventional connection methods.

[0017] Furthermore, by using a preset reference surface of the transformer substation and the initial path to determine the target path and the three-dimensional chamfer, connecting line segments can be drawn and combined based on the actual intersection points of the initial path and the transformer substation surface. Then, the three-dimensional chamfer is generated using the spatial shape features of the docking point. Thus, in the non-coplanar and non-intersecting spatial scattered line region, a legal spatial chamfer support surface is constructed, eliminating the risk of calculation deadlock and program crash in the underlying geometry engine.

[0018] Furthermore, bidirectional topology trimming is performed on the transformer substation connection line and the target path using 3D spatial chamfering, resulting in trimmed target path segments and trimmed transformer substation connection line segments. All 3D spatial chamfers, trimmed target path segments, and trimmed transformer substation connection line segments are then assembled into the composite cable center skeleton trajectory. This topology control method, through phased isolation of the initial and target paths and precise bidirectional trimming, ensures that the input entities during final assembly and stitching do not overlap and have complete boundaries. While guaranteeing complete continuity and uninterrupted connection from the inverter root to the transformer substation interface, it eliminates the topology overlap deadlock problem triggered at the assembly operator level due to overlapping elements such as repeated connecting splines. Finally, the continuous and valid composite cable center skeleton trajectory drives the generation of a 3D cable model, ensuring the rapid generation of valid physical models and guaranteeing the data flow continuity and model output quality throughout the large-scale laying modeling process.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this disclosure, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0021] Figure 1 This is a flowchart illustrating a processing method for modeling offshore photovoltaic cable laying according to an exemplary embodiment of the present disclosure.

[0022] Figure 2 This is a schematic diagram of the structure of a processing apparatus for modeling the laying of offshore photovoltaic cables, according to an exemplary embodiment of this disclosure.

[0023] Figure 3 This is a hardware structure diagram of a computer device shown in an embodiment of this disclosure. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0025] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0026] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0027] The embodiments of this disclosure will now be described in detail.

[0028] like Figure 1 As shown, Figure 1 This disclosure is a flowchart illustrating a processing method for modeling offshore photovoltaic cable laying according to an exemplary embodiment, comprising the following steps: Step 101: Construct a topology reference element set based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node, and cable channel.

[0029] Step 102: Perform topological joining processing on the horizontal and vertical channel paths in the topological reference element set. Sort the joined channel paths according to the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path to obtain the rearranged channel path corresponding to the inverter node.

[0030] Step 103: Determine the target channel path and outgoing reference surface corresponding to the inverter node based on the rearranged channel path. Determine the initial path corresponding to the inverter node based on the outgoing reference surface, target channel path and local reference geometric features corresponding to the inverter node.

[0031] Step 104: Determine the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer reference surface and the initial path; perform bidirectional topology trimming on the transformer junction line and the target path of the inverter node based on the three-dimensional chamfer to obtain the trimmed target path segment and the trimmed transformer junction line segment corresponding to the inverter node. Step 105: Assemble all the three-dimensional space chamfers, the cut target passage segments, and the cut box-type transformer junction segments into the composite cable center skeleton trajectory, and generate a three-dimensional cable model based on the composite cable center skeleton trajectory.

[0032] By performing the above steps in the processing method for modeling offshore photovoltaic cable laying provided in the exemplary embodiments of this disclosure, the local reference geometric features of heterogeneous hierarchical nodes in the product structure tree are converted to a unified coordinate system using an offset transformation matrix to construct a set of topological reference elements. This can replace manual unification of component design references, eliminate the tedious operation of manual querying and projection reconstruction across multiple folders, improve the real-time performance and positional accuracy of early reference alignment, and avoid spatial misalignment of design references caused by human reading errors.

[0033] Furthermore, by performing topological joining processing on the horizontal and vertical channel paths respectively, and sorting them according to the shortest spatial distance to obtain rearranged channel paths, a channel proximity index sequence can be provided for each heterogeneous node. This enables adaptive flow splitting decisions based on actual physical spacing, effectively addressing the randomness of the spatial installation posture and position of inverter nodes. Next, by determining the target channel path and outgoing reference surface based on the rearranged channel paths, and combining this with local reference geometric features to determine the initial path, devices farther from the main channel can automatically match laying paths including horizontal transition supports, while devices closer to the main channel automatically match direct connection paths. This avoids the gaps caused by a one-size-fits-all approach in conventional wiring methods and avoids trajectory intersection conflicts during dense laying.

[0034] Furthermore, by using the transformer substation reference surface and the initial path to determine the target path and the 3D spatial chamfer, connecting line segments can be drawn and combined based on the actual intersection endpoints of the initial path and the transformer substation surface. Then, the spatial shape features at the docking point are used to generate the 3D spatial chamfer. This avoids the problem of boundary constraint failure caused by directly chamfering non-coplanar curves in 3D graphics in non-coplanar, non-intersecting spatial scattered line regions, eliminating the risk of computational deadlock and program crashes. Simultaneously, by performing bidirectional topology trimming on the transformer substation connection line and the target path through 3D spatial chamfering, clean and complete trimmed target path segments and trimmed transformer substation connection line segments are obtained, providing accurate topology segmentation for subsequent lossless and non-overlapping splicing.

[0035] Finally, by assembling all the 3D spatial chamfers, trimmed target path segments, and trimmed transformer substation connection segments, a composite cable center skeleton trajectory is formed. This topology control mechanism, through phased isolation of the initial and target paths and bidirectional precise trimming, ensures that the input entities do not overlap during the final assembly stitching. While guaranteeing a completely continuous and unbroken path from the inverter root to the transformer substation interface, it eliminates topology overlap deadlocks triggered at the assembly operator's underlying layer due to overlapping elements such as repeated connecting splines. Ultimately, the continuous and valid composite cable center skeleton trajectory drives the generation of the cable's 3D model, ensuring the rapid generation of valid physical models and guaranteeing the efficiency of generating large batches of cable 3D physical models.

[0036] The processing method for modeling offshore photovoltaic cable laying in this example embodiment will be described in detail below.

[0037] In step 101, a set of topological reference elements is constructed based on the local reference geometric features and offset transformation matrices corresponding to each node in the inverter node, transformer substation node, and cable channel.

[0038] In the exemplary embodiments of this disclosure, the three-dimensional digital model of the offshore photovoltaic project is characterized by its large scale and dense arrangement, with the various electrical devices and wiring channels scattered in completely different heterogeneous levels in the software's product structure tree.

[0039] In response to the user's selection of inverter nodes, transformer substation nodes, and cable channel nodes in the graphical interface of the 3D design platform, the system traverses from top to bottom to obtain the lower-level sub-product levels corresponding to each selected node in the product structure tree, and obtains the component point, line, and surface elements within each sub-product level to obtain a set of geometric features.

[0040] Secondly, based on the preset feature name, local reference points, local reference lines, and local reference surfaces corresponding to the preset feature name are selected from the geometric feature set; and the selected local reference points, local reference lines, and local reference surfaces are determined as local reference geometric features.

[0041] For example, the preset feature name can be a text string agreed upon in advance when the equipment standard part is released or instantiated. The feature name is used to accurately obtain the feature with clear electrical geometric attributes from the aforementioned geometric feature set and determine it as a local reference geometric feature.

[0042] Finally, the position offset values ​​of each sub-product level are obtained. These position offset values ​​refer to the spatial translation and rotation position matrices of each component relative to a preset reference origin. Based on these position offset values, the aforementioned local reference geometric features are transformed to a preset coordinate system, and the features of the local reference point, local reference line, and local reference surface are reconstructed based on this preset coordinate system, resulting in the inverter reference line, the transformer substation connection line, the transformer substation reference surface, the horizontal channel path, and the vertical channel path. However, because the initial stacking positions and spatial installation deflection attitudes of each inverter node, transformer substation node, and cable channel on the offshore photovoltaic platform are different, their underlying local reference geometric features, operating in their respective independent local relative coordinate systems, cannot directly perform topology operations such as intersection and distance calculations in the global space. Therefore, the relative assembly matrix of each node in the product structure tree can be obtained, from which the corresponding position offset values ​​(including three-dimensional translation vectors and three-dimensional rotation matrices) for each sub-product level can be extracted. Based on these position offset values, the aforementioned local reference points, local reference lines, and local reference surfaces are uniformly transformed to the global preset coordinate system. Based on this global preset coordinate system, the features of the aforementioned local reference points, local reference lines, and local reference surfaces are reconstructed or instantiated respectively, thereby obtaining the inverter reference lines (corresponding to the lead references of each string inverter), transformer substation connection lines (corresponding to the references of the main busbars inside the transformer substation), transformer substation reference surfaces (corresponding to the reference surfaces of the outer gate of the transformer substation), horizontal channel paths (corresponding to the horizontal main bridge on the offshore support or floating body), and vertical channel paths (corresponding to the vertical wiring channels connecting the upper and lower structures) required for the entire line laying.

[0043] Geometric features are extracted by heterogeneous levels of the product structure tree, and the discrete local scattered coordinate system is reconstructed into a globally unified rigid topological mesh with one click using the relative assembly matrix, thus avoiding the risk of benchmark misalignment caused by frequent manual cross-level point selection and projection operations.

[0044] In step 102, the horizontal and vertical channel paths in the topology reference element set are topologically joined. Based on the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path, the joined channel paths are sorted to obtain the rearranged channel paths corresponding to the inverter node.

[0045] In the exemplary implementation of this disclosure, after the topology reference element set is constructed, discrete line segments in different local coordinate systems have completed the global spatial alignment. However, in large-scale offshore photovoltaic sub-arrays, cable channels are typically composed of multiple discontinuous, segmented instantiated bridge-type analog-to-digital modules. Directly calling these discrete, fragmented channel segments and the inverter reference lines of each string inverter to calculate distances would lead to addressing overhead overload due to excessive target redundancy, and even cause subsequent cable path crossing conflicts and chaotic flow splitting decisions due to the inability to effectively distinguish between trunk and branch channels. Therefore, it is necessary to introduce a global topology joining mechanism for channel paths and a rule-based rearrangement mechanism based on dynamic spatial distance.

[0046] Specifically, to ensure clarity and high execution efficiency in routing timing under large-scale, dense routing scenarios, the process of determining the rearrangement of channel paths in this step is further implemented in the following way: First, based on the spatial extension direction of each joined channel path, the joined channel paths are divided into horizontal channel paths and vertical channel paths.

[0047] In the three-dimensional space of offshore photovoltaic platforms or floating hull grids, the wiring processes and layout rules carried by cable tray channels with different extension directions are completely different. These channel paths can be automatically classified by extracting the principal directional derivatives or spatial extension vectors of each integrated cable channel in the global coordinate system. Channels whose extension vectors are parallel to or within the sea-level projection plane are identified as horizontal channel paths, corresponding to the main transverse cable trays on offshore floating hulls or rigid supports; channels whose extension vectors are perpendicular to the sea level or have a height dimension component are identified as vertical channel paths, corresponding to vertical cabling channels connecting upper and lower equipment layers or upper and lower deck structures. This directional dimensional classification achieves dimensionality reduction and classification of complex discrete channel networks.

[0048] Secondly, obtain the distance values ​​from each inverter reference line to each joined channel path.

[0049] A double loop approach can be used. The outer loop enumerates each inverter node in the product structure tree and reads the corresponding inverter reference line. The inner loop iterates through the previously classified horizontal and vertical channel paths. For each pair of inverter reference lines and channel paths, a distance calculation function is called to detect the minimum geometric distance between line segments or between a line segment and an infinitely extending line. The value of this minimum geometric distance is determined as the current distance value, which is used to quantify the compactness and spatial density of the inverter relative to the basic network.

[0050] Then, based on this distance value, the horizontal channel paths are sorted in ascending order from smallest to largest, and the vertical channel paths are sorted in descending order from largest to smallest to generate rearranged channel paths corresponding to each inverter reference line. To accurately eliminate redundant interference in subsequent steps, completely opposite differentiated rearrangement timing strategies are adopted for horizontal and vertical channels. For horizontal channel paths, those closer to the inverter are often the primary trunk paths to be integrated into. Therefore, an ascending order based on distance value is performed, with the horizontal channel with the shortest spatial distance being the preferred grid target to generate rearranged horizontal channel paths. Conversely, for vertical channel paths, since vertical channels are mainly used for vertical stitching transitions when laying long distances between upper and lower layers, vertical channels that are too close to the inverter are prone to causing dead bends and interference penetration in the leads. Maintaining a moderately long distance between vertical channels is beneficial for providing smooth lateral buffering. Therefore, a descending order based on distance value is performed to generate rearranged vertical channel paths.

[0051] Finally, the feature sequences of the rearranged horizontal channel path and the rearranged vertical channel path will be merged to obtain the rearranged channel path with time priority corresponding to the inverter node.

[0052] By dividing the channel path into horizontal and vertical dimensions and introducing a spatial relative distance rearrangement strategy with opposite ascending and descending order, the timing sequence guided by the spatial three-dimensional path is transformed from discrete scattered lines at the data level. This eliminates software kernel addressing blocking caused by channel fragmentation and effectively avoids near-end device connection penetration interference and far-end device connection spatial suspension conflict caused by blind connection in dense scenarios.

[0053] In step 103, the target channel path and outgoing reference surface corresponding to the inverter node are determined according to the rearranged channel path. The initial path corresponding to the inverter node is determined according to the outgoing reference surface, target channel path and local reference geometric features corresponding to the inverter node.

[0054] In the exemplary embodiments of this disclosure, due to the compact space and large scale of the marine photovoltaic sub-array units, the placement angles and physical distances from the channels of each string inverter often vary. Without adaptive spatial distance comparison and outgoing line face-changing control, forcibly using globally fixed geometric intersections or uniform rigid hardwires will cause equipment leads that are too close to the channel to penetrate the surrounding support structure during generation, leading to physical interference. Equipment leads that are too far from the channel will be suspended and misaligned in space due to a lack of local transition, and in severe cases, this can cause path distortion, entanglement, and dead ends at the outgoing line source. Therefore, after obtaining the rearranged channel paths, by introducing a threshold decision based on the shortest spatial distance and topological cutting and splicing of spatial intersections, the geometric rationality of the path can be ensured while guaranteeing the accurate filling of the entire three-dimensional solid model.

[0055] In the exemplary implementation of this disclosure, the detailed process of determining the target channel path, the outgoing reference plane, and finally constructing the initial path is further achieved in the following ways: Based on the comparison between the shortest spatial distance corresponding to the inverter node and the preset distance threshold, the target channel path and outgoing reference plane corresponding to the inverter node are determined.

[0056] In this step, the rearranged horizontal channel path and the rearranged vertical channel path in the rearranged channel path corresponding to the inverter node are obtained, and the shortest spatial distance corresponding to the inverter node is retrieved in real time and compared with the preset distance threshold in real time.

[0057] On one hand, if the shortest spatial distance corresponding to the inverter node is less than a preset distance threshold, the device is determined to be in a densely wired area near the source. In this case, to prevent the lead wire from forcibly penetrating the horizontal main cable tray when pulled out directly, the vertical channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is determined as the target channel path for the inverter node, guiding the cable to preferentially transition through the vertical structure. Simultaneously, to avoid small-angle dead bends at the terminal interfaces, the actual outgoing cable orientation is determined based on the physical arrangement of the inverter node in the first direction. If the outgoing cable orientation is spatially parallel to the currently locked target channel path, the horizontal reference plane in the first direction is directly determined as the current outgoing cable reference plane; if the outgoing cable orientation is not parallel to the current target channel path, the vertical reference plane in the second direction is determined as the outgoing cable reference plane corresponding to the inverter node, thereby forcibly constraining and optimizing the initial cable deflection angle through an adaptive surface-changing strategy. The preset distance threshold can be determined according to the actual situation, such as setting it to 5 meters. This disclosure does not make any special restrictions. The first direction can be a horizontal direction parallel to the physical arrangement axis of the photovoltaic module (e.g., the X-axis direction under the preset coordinate system); while the corresponding second direction can be a vertical direction perpendicular to the physical arrangement axis of the photovoltaic module (e.g., the Y-axis direction under the preset coordinate system).

[0058] On the other hand, if the shortest spatial distance corresponding to the inverter node is greater than or equal to a preset distance threshold, the device is determined to be in the remote cabling area. In this case, the horizontal channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is rearranged and determined as the target channel path, thereby guiding long-distance cables to preferentially merge into the main horizontal trunk line. Simultaneously, the vertical reference plane of the inverter node is acquired in real time, and boundary calculations are performed based on the three-dimensional spatial orientation and extension vector of the vertical reference plane to determine the outgoing reference plane corresponding to the inverter node, ensuring that the remote lead can smoothly extend outward along the device sidewall or a specific spatial direction.

[0059] In the example implementation of this disclosure, after accurately determining the target channel path and outgoing reference surface corresponding to each branch line, the continuous geometric construction of the initial path is further completed in a preset coordinate system through spatial intersection cutting and topology splicing algorithms.

[0060] Specifically, the determined outgoing reference plane is first intersected with the corresponding target channel path, and the intersection point is accurately calculated to obtain the corresponding spatial intersection point. Subsequently, based on the spatial intersection point and the local reference geometric features of the inverter node itself (such as local reference points at the bottom of the components), a connection spline with high-order continuity is constructed and generated in real time through a three-dimensional construction factory function to characterize the initial outgoing trajectory from the inverter physical terminals to the main cable tray.

[0061] At this point, to prevent redundant and repetitive line segments from remaining behind the spatial intersection point after the merging of the connecting spline, the target channel path is cut according to the calculated spatial intersection point, and useless line ends are removed to obtain the corresponding target retained channel path. Specifically, after locating the spatial intersection point, the target channel path is precisely divided into two segments using this spatial intersection point as the absolute physical boundary. Useless redundant line segments facing away from the transformer terminal are identified and discarded, while the effective channel segment facing the transformer's busbar endpoint is retained, thus determining the target retained channel path corresponding to this inverter node.

[0062] Finally, the connecting spline is connected end-to-end with the target reserved channel path to construct the initial path corresponding to the inverter node. Specifically, the endpoint of the connecting spline can be joined with the starting point of the target reserved channel path using a common node. Since the aforementioned cutting operation is performed using the same spatial intersection as the boundary, the three-dimensional coordinates of the spline endpoint and the reserved channel starting point are strictly aligned within machine precision. By eliminating the geometric gap between the two endpoints, two independent spatial curves originally belonging to different geometric entities are merged into a single composite line segment with continuous topological relationships and unique data flow, thereby safely constructing the initial path corresponding to the inverter node.

[0063] Through the adaptive threshold current splitting determination, outgoing line orientation parallel correction, and spatial intersection truncation and splicing steps described above, the complex, variable, and randomly deflected inverter outgoing line problems in dense scenarios are completely contained within an adaptive topology rule tree based on feature relative distance and physical attitude. Compared to traditional manual wiring or methods relying on rigid fixed reference surface projection for intersection, this approach endows the wiring trajectory with multi-dimensional attitude adaptive surface changing and dynamic current splitting control capabilities at the source stage of initial path generation. This avoids the problems of path knotting, self-entanglement, and trajectory distortion caused by inverter placement angle deflection at the origin interface, ensuring that the automatically generated initial cable path has absolute engineering feasibility.

[0064] In step 104, the target path and three-dimensional chamfer corresponding to the inverter node are determined based on the transformer reference surface and the initial path. Based on the three-dimensional chamfer, bidirectional topology trimming is performed on the transformer junction line and the target path of the inverter node to obtain the trimmed target path segment and the trimmed transformer junction line segment corresponding to the inverter node.

[0065] In the example implementation of this disclosure, after the initial path is constructed, the leads of each inverter node have been successfully incorporated into the backbone cable tray mesh. However, this initial path and the globally unique single-number transformer junction line are usually in a discrete state in three-dimensional space, being non-coplanar, staggered, and not directly intersecting. If the general conventional circular arc chamfer operator is directly called, the three-dimensional geometry engine will be unable to establish a legal spatial transition surface due to the lack of continuous supporting reference between the two spatial trajectory lines, thus directly triggering a boundary calculation deadlock and causing the automated modeling process to be forcibly interrupted. In addition, if the overlapping trajectories at the intersection are not accurately hidden, multiple branches will frequently trigger the kernel's topology overlap deadlock anomaly during the merging and assembly process due to the inclusion of a large number of spatially redundant elements with non-unique physical boundaries. Therefore, a non-coplanar chamfer generation mechanism based on the spatial bi-line tangent plane and a bidirectional topology trimming algorithm are introduced.

[0066] Specifically, to ensure the topological integrity and accuracy of heterogeneous spatial scattered lines at the terminal stitching point, the detailed execution process for determining the target path, three-dimensional spatial chamfering, and performing bidirectional clipping is as follows: First, the intersection of the transformer substation reference plane and the initial path is processed to determine the end intersection point corresponding to the inverter node. Then, the connecting line segment corresponding to the inverter node is constructed based on the end intersection point and the starting point of the transformer substation connection line.

[0067] The initial path can be extended towards the transformer substation, and its intersection with the transformer substation reference plane is established as the end intersection point corresponding to the inverter node. Subsequently, the starting coordinate point of the transformer substation connection line is obtained, and a transition trajectory is drawn by connecting the end intersection point and the starting point of the transformer substation connection line. This transition trajectory is then defined as the connecting line segment corresponding to the inverter node. This connecting line segment establishes a bridge transition channel in space from the main cable tray to the transformer substation bus.

[0068] Next, the connecting line segment corresponding to the inverter node is combined into the initial path corresponding to the inverter node to obtain the target path corresponding to the inverter node.

[0069] For example, the initial path, which is discrete due to spatial intersections in the aforementioned steps, can be spliced ​​end-to-end with the currently generated connecting line segment. Since the starting point of the connecting line segment is precisely the end intersection point where the initial path intersects with the transformer reference surface, the endpoint coordinates of the two strictly coincide within the machine's precision. By eliminating the splicing gaps, these two curves are merged into a single line segment with a continuous topological relationship, thereby safely constructing the target path corresponding to the inverter node.

[0070] Subsequently, based on the spatial shape characteristics of the connection segment between the transformer substation junction line and the inverter node at the docking point, the spatial chamfer support surface and the three-dimensional spatial chamfer corresponding to the inverter node were determined.

[0071] For example, the tangent line at the break point of the transformer substation joint line can be extracted first, and the tangent line at the endpoint of the connecting line segment at the joint can be extracted simultaneously. Since these two tangent lines intersect at a common topological intersection point at the spatial joint, they have a coplanar basis. Based on the coplanar constraint brought about by this common spatial topological intersection point, plane fitting can be performed using these two intersecting tangent lines as the boundary reference direction to construct a geometric reference surface, and this geometric reference surface can be determined as the spatial chamfer support surface.

[0072] After determining the spatial chamfer support surface, this plane is used as a reference. The connecting line segment corresponding to the inverter node and the junction line of the transformer substation are used as guiding boundaries. Under the constraint of the normal direction of the spatial chamfer support surface, the corresponding three-dimensional spatial chamfer is generated, thereby realizing the smooth transition of the non-coplanar misaligned path.

[0073] Finally, using the three-dimensional chamfer, bidirectional topology trimming is performed on the target path of the transformer substation connection line and the inverter node, respectively, to obtain the trimmed target path segment and the trimmed transformer substation connection line segment corresponding to the inverter node.

[0074] After the chamfer is generated in three-dimensional space, the start and end points of the chamfer arc have actually cut into the physical boundary of the target path and the substation junction line. To prevent the original line ends from geometrically overlapping, the target path is truncated using one end of the three-dimensional chamfer as the physical boundary. Redundant line ends that cross the chamfer boundary are removed, and the effective segments are retained as the trimmed target path segments. Similarly, the same global substation junction line is synchronously truncated using the same chamfer boundary in the kernel. Based on the spatial extension direction of the substation junction line itself and the spatial topological relationship between the three-dimensional chamfer and the starting point of the substation junction line, the effective line segments on the side facing the main busbar reference inside the substation node are selected and retained, while redundant line segments on the side far from the busbar endpoint are discarded. Overlapping stray lines are removed to obtain the corresponding trimmed substation junction line segments.

[0075] It should be noted that, since the transformer substation connection line is a globally unique single bus, through this gridded bidirectional cutting, the original global bus is precisely divided into multiple non-overlapping, physically unique safety segments.

[0076] This application, by constructing a spatial bilinear plane, not only resolves the deadlock contradiction in the calculation of non-coplanar geometric boundaries, but also eliminates geometric trajectory redundancy through precise bidirectional topology pruning. This enables seamless topology connection between each branch path and the unique bus path at the convergence corner, avoiding topology overlap deadlock anomalies caused by repeated stacking of line segments in the subsequent assembly stage.

[0077] In step 105, all the three-dimensional space chamfers, the cut target passage segments, and the cut transformer substation connection segments are assembled into the composite cable center skeleton trajectory, and a three-dimensional cable model is generated based on the composite cable center skeleton trajectory.

[0078] In this exemplary embodiment, all three-dimensional spatial chamfers, the trimmed target path segments corresponding to each inverter node, and the trimmed transformer junction segments corresponding to each inverter node can be obtained. These discrete lines, with unique physical boundaries, non-overlapping, and connected end-to-end, are then merged into a composite cable central skeleton trajectory with continuous spatial topology and no redundant branches. Based on this composite cable central skeleton trajectory, a preset generation function is invoked to generate the corresponding three-dimensional cable model in space.

[0079] This application precisely restricts the assembly object to the feature segments after bidirectional trimming. In the final entity construction stage, it runs smoothly guided by a central trajectory with a unique physical boundary, eliminating underlying mathematical deadlocks caused by model-digital overlap and geometric chain breaks. Even in dense operating conditions with a large number of concurrent multi-string inverter nodes, it ensures intelligent filling of the entire multi-branch cable network entity model, shortening the project design cycle and guaranteeing the efficiency and accuracy of the 3D design model.

[0080] like Figure 2 As shown, Figure 2 This is a schematic diagram of a processing apparatus for modeling offshore photovoltaic cable laying according to an exemplary embodiment of the present disclosure. The apparatus includes: a construction module 210, a sorting module 220, a determination module 230, a trimming module 240, and a generation module 250. Module 210 is used to construct a topology reference element set based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node and cable channel. The topology reference element set includes inverter reference line, transformer substation junction line, transformer substation reference surface, horizontal channel path and vertical channel path. The sorting module 220 is used to perform topological joining processing on the horizontal and vertical channel paths in the topological reference element set, and sort the joined channel paths according to the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path to obtain the rearranged channel path corresponding to the inverter node. The determination module 230 is used to determine the target channel path and outgoing reference surface corresponding to the inverter node based on the rearranged channel path, and to determine the initial path corresponding to the inverter node based on the outgoing reference surface, target channel path and local reference geometric features corresponding to the inverter node. The trimming module 240 is used to determine the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer reference surface and the initial path; and to perform bidirectional topology trimming on the transformer junction line and the target path of the inverter node based on the three-dimensional chamfer to obtain the trimmed target path segment and the trimmed transformer junction line segment corresponding to the inverter node. The generation module 250 is used to assemble all the three-dimensional space chamfers, the cut target passage segments and the cut box-type substation joint segments into the composite cable center skeleton trajectory, and generate a three-dimensional cable model based on the composite cable center skeleton trajectory.

[0081] The processing apparatus for modeling offshore photovoltaic cable laying disclosed herein can be applied to computer equipment, such as servers or terminal devices. The apparatus embodiments can be implemented through software, hardware, or a combination of both. Taking software implementation as an example, as a logical device, it is formed by its processor reading the corresponding computer program instructions from non-volatile memory into memory and executing them. From a hardware perspective, such as... Figure 3 The diagram shown is a hardware structure diagram of a computer device containing a processing apparatus for modeling offshore photovoltaic cable laying, according to an embodiment of this disclosure. Except for... Figure 3In addition to the processor 310, memory 330, network interface 320, and non-volatile memory 340 shown, the server or electronic device where the processing device for modeling offshore photovoltaic cable laying in the embodiment is located may also include other hardware depending on the actual function of the computer device, which will not be described in detail here.

[0082] The specific implementation process of the functions and roles of each module in the above device can be found in the implementation process of the corresponding steps in the above method, and will not be repeated here.

[0083] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0084] In one example embodiment of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible embodiments, various aspects of this disclosure may also be implemented as a program product comprising program code that, when the program product is run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0085] The foregoing has described specific embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0086] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention applied herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only.

[0087] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

[0088] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A processing method for modeling offshore photovoltaic cable laying, characterized in that, The method includes: Based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node, and cable channel, a topology reference element set is constructed, which includes inverter reference line, transformer substation junction line, transformer substation reference surface, horizontal channel path, and vertical channel path. The horizontal and vertical channel paths in the set of topological reference elements are respectively subjected to topological joining processing. Based on the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path, the joined channel paths are sorted to obtain the rearranged channel path corresponding to the inverter node. The target channel path and outgoing reference surface corresponding to the inverter node are determined based on the rearranged channel path. The initial path corresponding to the inverter node is determined based on the outgoing reference surface corresponding to the inverter node, the target channel path, and the local reference geometric features. The target path and three-dimensional chamfer corresponding to the inverter node are determined based on the transformer substation reference surface and the initial path; bidirectional topology trimming is performed on the transformer substation junction line and the target path of the inverter node based on the three-dimensional chamfer, to obtain the trimmed target path segment and the trimmed transformer substation junction line segment corresponding to the inverter node. All the three-dimensional space chamfers, the cut target passage segment, and the cut transformer substation connection segment are assembled into a composite cable center skeleton trajectory, and a three-dimensional cable model is generated based on the composite cable center skeleton trajectory.

2. The method according to claim 1, characterized in that, The topology reference element set is constructed based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node, and cable channel, including: Obtain the lower-level sub-product levels corresponding to the inverter node, the transformer substation node, and the cable channel, and obtain the geometric feature set contained in each sub-product level; Based on the preset feature names, local reference points, local reference lines, and local reference surfaces corresponding to the preset feature names are selected from the set of geometric features; and the local reference points, local reference lines, and local reference surfaces are determined as local reference geometric features. Obtain the position offset value of each of the sub-product levels, transform the local reference geometric features to a preset coordinate system based on the position offset value, and reconstruct the features of the local reference point, the local reference line and the local reference surface based on the preset coordinate system to obtain the inverter reference line, the transformer substation connection line, the transformer substation reference surface, the horizontal channel path and the vertical channel path.

3. The method according to claim 1, characterized in that, The step of sorting the combined channel paths to obtain the rearranged channel paths corresponding to the inverter nodes includes: Based on the spatial extension direction of the joined cable channel, the joined channel path is divided into a horizontal channel path and a vertical channel path; Obtain the distance value from the inverter reference line to the joined channel path; Based on the distance value, the horizontal channel path is sorted in ascending order from smallest to largest, and the vertical channel path is sorted in descending order from largest to smallest, to generate the rearranged channel path corresponding to the inverter node.

4. The method according to claim 1, characterized in that, The step of determining the target channel path and outgoing reference plane corresponding to the inverter node based on the rearranged channel path includes: Based on the comparison between the shortest spatial distance corresponding to the inverter node and the preset distance threshold, the target channel path and outgoing reference plane corresponding to the inverter node are determined.

5. The method according to claim 4, characterized in that, The step of determining the target channel path and outgoing reference plane corresponding to the inverter node based on the comparison result between the shortest spatial distance corresponding to the inverter node and a preset distance threshold includes: Obtain the rearranged horizontal channel path and the rearranged vertical channel path from the rearranged channel paths corresponding to the inverter node; If the shortest spatial distance corresponding to the inverter node is less than a preset distance threshold, the rearranged vertical channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is determined as the target channel path. At the same time, the outgoing line orientation is determined according to the arrangement posture of the inverter node in the first direction. If the outgoing line orientation is parallel to the target channel path, the horizontal reference plane in the first direction is determined as the outgoing line reference plane. If the outgoing line orientation is not parallel to the target channel path, the vertical reference plane in the second direction is determined as the outgoing line reference plane corresponding to the inverter node. If the shortest spatial distance corresponding to the inverter node is greater than or equal to the preset distance threshold, then the rearranged horizontal channel path with the shortest spatial distance to the inverter reference line corresponding to the inverter node is determined as the target channel path; at the same time, the vertical reference plane of the inverter node is obtained, and the outgoing line reference plane is determined according to the spatial orientation of the vertical reference plane.

6. The method according to claim 1, characterized in that, The step of determining the initial path corresponding to the inverter node based on the outgoing reference surface corresponding to the inverter node, the target channel path, and the local reference geometric features includes: The intersection of the outgoing reference surface and the target channel path is processed to obtain a spatial intersection point, and a connecting spline is generated based on the spatial intersection point and the local reference geometric features. The target channel path is cut according to the spatial intersection point to obtain the target reserved channel path. The connecting spline is then topologically spliced ​​with the target reserved channel path to obtain the initial path corresponding to the inverter node.

7. The method according to claim 1, characterized in that, The step of determining the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer substation reference surface and the initial path includes: Based on the intersection processing of the transformer substation reference plane and the initial path, the end intersection point corresponding to the inverter node is determined, and the connecting line segment corresponding to the inverter node is constructed based on the end intersection point and the starting point of the transformer substation junction line. Combine the connecting line segments corresponding to the inverter node into the initial path corresponding to the inverter node to obtain the target path corresponding to the inverter node; Based on the spatial shape characteristics of the connection segment between the transformer substation junction line and the inverter node at the docking point, determine the spatial chamfer support surface and the three-dimensional spatial chamfer corresponding to the inverter node.

8. The method according to claim 7, characterized in that, The step of determining the spatial chamfer support surface and three-dimensional spatial chamfer corresponding to the inverter node at the joint point based on the spatial shape characteristics of the connecting line segment between the transformer substation and the inverter node includes: Obtain the tangent line at the break point of the transformer substation junction line and the tangent line at the endpoint of the connecting line segment corresponding to the inverter node. Construct a spatial double-line plane based on the tangent lines at the endpoints of both, and determine the spatial chamfer support surface based on the spatial double-line plane. Based on the spatial chamfered support surface corresponding to the inverter node, and using the connecting line segment corresponding to the inverter node and the junction line of the transformer substation as the guiding boundary, a corresponding three-dimensional spatial chamfer is generated.

9. A processing device for modeling offshore photovoltaic cable laying, characterized in that, include: The construction module is used to construct a topology reference element set based on the local reference geometric features and offset transformation matrix corresponding to each node in the inverter node, transformer substation node and cable channel. The topology reference element set includes inverter reference line, transformer substation junction line, transformer substation reference surface, horizontal channel path and vertical channel path. The sorting module is used to perform topological joining processing on the horizontal and vertical channel paths in the topological reference element set, and sort the joined channel paths according to the shortest spatial distance between the inverter reference line corresponding to the inverter node and the joined channel path to obtain the rearranged channel path corresponding to the inverter node. The determination module is used to determine the target channel path and outgoing reference surface corresponding to the inverter node based on the rearranged channel path, and to determine the initial path corresponding to the inverter node based on the outgoing reference surface corresponding to the inverter node, the target channel path, and the local reference geometric features. The trimming module is used to determine the target path and three-dimensional chamfer corresponding to the inverter node based on the transformer reference surface and the initial path. Based on the three-dimensional space chamfer, the target path of the transformer substation junction line and the inverter node are subjected to bidirectional topology trimming to obtain the trimmed target path segment and the trimmed transformer substation junction line segment corresponding to the inverter node. The generation module is used to assemble all the three-dimensional space chamfers, the cut target passage segments, and the cut transformer substation connection segments into a composite cable center skeleton trajectory, and generate a three-dimensional cable model based on the composite cable center skeleton trajectory.

10. A computer device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the steps of the method as described in any one of claims 1-8.

Images