Three-dimensional design method and system for distribution network line engineering and storage medium

Abstract

The invention relates to a distribution network line engineering three-dimensional design method and system and a storage medium, and the method comprises the steps: obtaining the three-dimensional data of a terrain through employing an unmanned plane oblique photography or laser radar scanning mode, and constructing a three-dimensional GIS environment; carrying out distribution network line selection in a three-dimensional GIS environment, generating a plurality of distribution network line candidate schemes, and carrying out three-dimensional visual display to select an optimal distribution network line scheme; in the line selection process, based on the principles of terrain analysis, obstacle avoidance and economical efficiency optimization, screening out a line-selectable area, and then generating a distribution network line candidate scheme through a man-machine interaction line selection mode; and performing comprehensive collision detection on the distribution network line scheme, if the detection is passed, generating a three-dimensional model of the distribution network line project, and generating a corresponding construction drawing by the three-dimensional model to complete the design of the distribution network line project. Compared with the prior art, the distribution network line design efficiency can be remarkably improved, the design error is reduced, and the later modification cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of power distribution line engineering design technology, and in particular to a three-dimensional design method, system and storage medium for power distribution line engineering. Background Technology

[0002] For a long time, power distribution network engineering design has relied on traditional two-dimensional design methods, which suffer from problems such as insufficient design accuracy, low efficiency, and frequent construction changes. With the rapid development of three-dimensional digital technology in the field of power grid construction, three-dimensional digital power grids have gradually become an important part of power grid construction and management. Especially in complex terrain conditions, traditional manual measurement is inefficient, and ground objects can easily cause damage and leakage, often leading to frequent changes in lines.

[0003] For example, the invention with publication number CN117390746A discloses a method for power distribution network engineering simulation design based on a three-dimensional platform. First, a three-dimensional model of the power distribution network is established based on laser point cloud scanning. Then, power distribution network engineering simulation design is carried out based on the three-dimensional model. High-precision positioning and inspection technology of UAVs is used, combined with three-dimensional map information display technology, to realize the integrated application of engineering simulation design and inspection business management, and promote the process of refined management of power distribution networks. A three-dimensional model library of power distribution network equipment is established based on typical power distribution network designs. Power distribution network simulation design is carried out through a three-dimensional platform, which can serve as the basis for engineering construction design. After the project is completed, the construction project is scanned by UAVs equipped with laser radar equipment to form a three-dimensional scene of the actual construction project.

[0004] The above solution only uses drone inspections to create a 3D map for power distribution network simulation design. The process of selecting power distribution lines, collision detection, and drawing generation all need to be done manually, which results in low processing efficiency and cannot guarantee the reliability of the design results. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, such as low processing efficiency and inability to guarantee the reliability of design results, and to provide a three-dimensional design method, system and storage medium for distribution network line engineering.

[0006] The objective of this invention can be achieved through the following technical solutions: A three-dimensional design method for power distribution network engineering includes the following steps: Three-dimensional terrain data is acquired by using UAV oblique photography or LiDAR scanning to construct a three-dimensional GIS environment; In the 3D GIS environment, power distribution line selection is performed, generating multiple candidate power distribution line schemes and displaying them in 3D visualization to select the optimal power distribution line scheme. The power distribution line selection process is based on the principles of terrain analysis, obstacle avoidance, and economic optimization. Selectable line areas are filtered in the 3D GIS environment, and then multiple candidate power distribution line schemes are generated through human-computer interactive line selection. A comprehensive collision detection is performed based on the optimal distribution network line scheme. If the detection passes, a three-dimensional model of the distribution network line project is generated according to the scheme, and corresponding construction drawings are generated from the three-dimensional model to complete the design of the distribution network line project.

[0007] Furthermore, the method of UAV oblique photography specifically involves the UAV taking terrain photos at an angle tilted relative to the ground according to a pre-determined flight path plan and flight operation parameters, and then stitching the acquired images together to reconstruct the three-dimensional data of the terrain.

[0008] Furthermore, the route planning is based on the principle of ensuring image overlap and coverage integrity.

[0009] Furthermore, the flight operation parameters include flight altitude and flight speed.

[0010] Furthermore, based on the aforementioned distribution network line scheme, a three-dimensional model of the distribution network line project is generated, specifically as follows: According to the power distribution network scheme, the power distribution network is constructed in a 3D GIS environment, and standard component library is called to set line components on the power distribution network.

[0011] Furthermore, the components in the standard component library include poles, conductors, distribution network equipment, and fittings.

[0012] Furthermore, the comprehensive collision detection specifically uses a pre-established professional collision detection rule library for distribution networks to perform collision detection on distribution network line schemes. If a collision is detected, a collision warning is issued, and the location of the collision and the handling measures are recorded.

[0013] Furthermore, the corresponding construction drawings are generated from the 3D model, specifically including: A plan view is generated by horizontally sectioning the 3D model; An orthographic drawing is generated by orthographic projection, with the projection direction selected based on the route or building orientation. Cutting surfaces should be set at key locations according to design requirements; Add dimensions, elevations, coordinates, and explanatory text to the generated plan views, elevations, and sections.

[0014] The present invention also provides a three-dimensional design system for power distribution line engineering, including a memory and a processor. The memory stores a computer program, and the processor calls the computer program to execute the steps of the method described above.

[0015] The present invention also provides a computer-readable storage medium on which a computer program is stored, the computer program being executed by a processor using the method described above.

[0016] Compared with the prior art, the present invention has the following advantages: (1) This invention acquires three-dimensional terrain data through UAV oblique photography to construct a three-dimensional GIS environment, which can provide a high-precision three-dimensional model that meets design requirements; in the three-dimensional GIS environment, the distribution network line selection is performed to generate multiple distribution network line candidate schemes, and the human-computer interaction selection is performed in a visual way, which can effectively improve design efficiency and ensure the reliability of design results; the optimal distribution network line scheme is also subjected to comprehensive collision detection, which can significantly reduce the probability of design errors and construction changes.

[0017] (2) The three-dimensional design method for distribution network line engineering proposed in this invention realizes intelligent line selection, three-dimensional modeling, collision detection and automatic construction drawing generation of distribution network lines. This solution will significantly improve the design efficiency of distribution network lines, reduce design errors, optimize construction schemes, reduce the cost of later transformation, and provide strong support for the construction of smart grids. Attached Figure Description

[0018] Figure 1 This is a flowchart illustrating a three-dimensional design method for power distribution line engineering provided in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] Example 1 like Figure 1 As shown in the figure, this embodiment provides a three-dimensional design method for distribution network line engineering, including the following steps: S1: Use UAV oblique photography or LiDAR scanning to acquire three-dimensional terrain data and construct a three-dimensional GIS environment; S2: Select distribution network routes in a 3D GIS environment, generate multiple candidate distribution network route schemes, and display them in 3D visualization to select the optimal distribution network route scheme; In the process of selecting distribution network routes, based on the principles of terrain analysis, obstacle avoidance, and economic optimization, select selectable route areas in the 3D GIS environment, and then generate multiple candidate distribution network route schemes through human-computer interactive route selection. S3: Perform comprehensive collision detection based on the optimal distribution network line scheme. If the detection passes, generate a 3D model of the distribution network line project according to the distribution network line scheme, and generate corresponding construction drawings from the 3D model to complete the design of the distribution network line project.

[0026] Specifically, in step S1, the method of UAV oblique photography is as follows: the UAV takes terrain photos at an angle tilted relative to the ground according to the predetermined flight route plan and flight operation parameters, and stitches the acquired images to reconstruct the three-dimensional data of the terrain.

[0027] Among them, the route planning is determined based on the principle of ensuring image overlap rate and coverage integrity.

[0028] Flight operation parameters include flight altitude and flight speed.

[0029] This is equivalent to establishing a standard operating procedure for UAV aerial surveying, including flight path planning (ensuring image overlap and coverage integrity), flight operations (selecting suitable weather conditions, controlling flight altitude and speed), and data processing (image stitching, 3D reconstruction, and accuracy verification). Aerial survey data will be automatically converted into a 3D GIS-compatible format, reducing manual processing. Terrain data quality inspection standards will be established to ensure that terrain accuracy meets design requirements.

[0030] Step S2 specifically involves selecting a route or site in a 3D GIS environment, invoking an intelligent route selection algorithm, and automatically generating multiple candidate solutions by comprehensively considering factors such as terrain, buildings, environment, and economy. The solutions are then visualized in 3D, allowing for virtual walkthroughs and a direct comparison of their merits.

[0031] Develop a dedicated alignment algorithm that integrates terrain analysis, obstacle avoidance, and economic optimization. Establish an alignment rule base, formalizing design specifications, technical standards, and corporate experience into alignment constraints and optimization objectives. Provide an interactive alignment tool that supports a human-machine collaborative approach. The algorithm generates preliminary plans, which designers then adjust and optimize based on their experience, achieving a combination of algorithmic efficiency and human expertise.

[0032] In step S3, a three-dimensional model of the distribution network line project is generated based on the distribution network line scheme, specifically as follows: Based on the power distribution network plan, the power distribution network is constructed in a 3D GIS environment, and standard component libraries are called to set up line components on the power distribution network.

[0033] The standard component library includes components such as poles, conductors, distribution network equipment, and fittings.

[0034] In a 3D GIS environment, construction processes such as pole erection, line stringing, equipment installation, and cable laying are transformed into 3D animations, intuitively demonstrating construction steps and key technical points. A construction process model library is also established, including common construction methods and machinery such as truck cranes, excavators, and concrete pouring trucks. Construction scenes can be quickly assembled and construction parameters configured through drag-and-drop and parameter settings.

[0035] Comprehensive collision detection specifically uses a pre-established professional collision detection rule library for distribution networks to perform collision detection on distribution network line schemes. If a collision is detected, a collision warning is issued, and the location of the collision and the handling measures are recorded.

[0036] Collision detection is divided into hard collision detection and soft collision detection. Hard collision detection identifies interference between geometric entities, such as a wire colliding with a building or equipment overlapping a wall. Soft collision detection identifies insufficient safe distances, such as a wire being too close to a tree or equipment being too close to a pedestrian walkway; whether this is permissible needs to be determined according to regulations.

[0037] During comprehensive collision detection, spatial data structures such as bounding box hierarchy (BVH) or octrees are used to quickly eliminate unlikely collision pairs, narrowing down the detection range. Precise geometric intersection calculations are performed on potentially colliding component pairs to identify the collision location and severity. A collision rule base is established, defining safety distance requirements between different types of components, such as a minimum horizontal distance of 1.0 meter between a 10kV conductor and a building, and a minimum vertical distance of 4.0 meters between a conductor and the ground. The system automatically determines whether safety regulations are violated, generates a collision detection report, and marks the collision location, involved components, violated regulatory clauses, and provides modification suggestions.

[0038] The construction drawings generated from the 3D model include: A plan view is generated by horizontally sectioning the 3D model; An orthographic drawing is generated by orthographic projection, with the projection direction selected based on the route or building orientation. Cutting surfaces should be set at key locations according to design requirements; Add dimensions, elevations, coordinates, and explanatory text to the generated plan views, elevations, and sections.

[0039] Specifically, floor plans are generated by horizontally sectioning a 3D model, with the section height automatically determined based on engineering practices (e.g., 1.5 meters from the ground); elevations are generated through orthogonal projection, with the projection direction automatically selected based on the route or building orientation; and sectional views are generated by setting section planes at key locations according to design needs. A hidden line removal algorithm is developed to automatically identify and remove obscured lines in the view, maintaining the clarity of the drawings.

[0040] Annotations on drawings include dimensions, elevations, coordinates, and explanatory text. An annotation rule library is established, defining annotation requirements for various components based on national drafting standards and industry practices. For example, towers require annotations of parameters such as tower height, burial depth, and root opening; transformers require annotations of information such as model, capacity, and installation height. An annotation algorithm automatically identifies the geometric elements requiring annotation, rationally arranges annotation positions, and avoids annotation overlap and obstruction.

[0041] For drawing layout, power distribution network construction drawings contain multiple drawing sizes, requiring a reasonable arrangement of views. A drawing template library is established, defining elements such as drawing frames, title blocks, legends, and technical specifications according to national standard drawing sizes (A0, A1, A2, A3, A4). Through an automatic layout algorithm, the system intelligently selects drawing sizes, divides drawing areas, and arranges views based on the number and size of views, generating construction drawings that conform to drafting standards. Batch drawing generation is supported, allowing the generation of all drawings for the entire project at once.

[0042] Construction drawings are layered by discipline, such as architectural, structural, and electrical layers. Different layers use different colors and line types for easy identification and printing. Layers are automatically generated from the 3D model, assigning buildings to the architectural layer, towers to the structural layer, and conductors and equipment to the electrical layer. Line types are automatically assigned based on component attributes, such as solid lines for visible outlines, dashed lines for hidden outlines, and dotted lines for centerlines.

[0043] Overall, this solution includes the following processing steps: Terrain modeling optimization: Establish standard operating procedures for UAV aerial surveying, including flight path planning (ensuring image overlap and coverage integrity), flight operations (selecting suitable weather conditions, controlling flight altitude and speed), and data processing (image stitching, 3D reconstruction, and accuracy verification). Utilize automated terrain data processing tools to automatically convert aerial survey data into a usable 3D GIS format, reducing manual processing. Establish terrain data quality inspection standards to ensure terrain accuracy meets design requirements.

[0044] Route selection design optimization: A dedicated algorithm for power distribution network route selection is adopted, integrating functions such as terrain analysis, obstacle avoidance, and economic optimization. A route selection rule base is established, formalizing design specifications, technical standards, and enterprise experience into route selection constraints and optimization objectives. An interactive route selection tool is provided, supporting a human-machine collaborative route selection approach. The algorithm generates preliminary schemes, which designers then adjust and optimize based on experience, achieving a combination of algorithmic efficiency and human expertise.

[0045] 3D Modeling Optimization: Establish an enterprise-level standard component library covering commonly used poles, conductors, equipment, and hardware, with complete component parameters and detailed models. Develop component library management standards, clearly defining component naming, classification, and version management rules, and regularly update and maintain the component library. Utilize rapid modeling tools to automatically place poles, connect conductors, and associate equipment via route selection, reducing manual modeling workload.

[0046] Collision Detection Optimization: Establish a professional collision detection rule base for power distribution networks, covering various safety distance requirements stipulated by national regulations, industry standards, and enterprise regulations. Implement an automatic collision detection mechanism to perform collision detection in real time during the design process, immediately alerting the system upon detection of a conflict to prevent problem accumulation. Establish a collision issue tracking mechanism to record detected collisions, responsible parties, handling measures, and resolution status, ensuring closed-loop management of issues.

[0047] Automated drawing generation optimization: Establish an enterprise drawing template library, customizing elements such as drawing frames, title blocks, and legends according to national and enterprise standards. Develop intelligent annotation algorithms to automatically identify geometric elements requiring annotation, rationally arrange annotation positions, and generate compliant annotations. Provide an automatic drawing quality check function to verify the standardization of elements such as scale, line type, text, and annotations, generating an inspection report. Support batch drawing generation and batch printing to improve delivery efficiency.

[0048] Example 2 This embodiment provides a three-dimensional design system for power distribution line engineering, including a memory and a processor. The memory stores a computer program, and the processor calls the computer program to execute the steps of a three-dimensional design method for power distribution line engineering as described in Embodiment 1.

[0049] The computer program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This computer program code can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the computer program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The computer program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0050] This embodiment also provides a computer-readable storage medium storing a computer program, which is executed by a processor as described in the embodiment, a three-dimensional design method for power distribution line engineering.

[0051] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium can be a machine-readable signal medium or a machine-readable storage medium. A computer-readable storage medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0052] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A three-dimensional design method for power distribution network line engineering, characterized in that, Includes the following steps: Three-dimensional terrain data is acquired by using UAV oblique photography or LiDAR scanning to construct a three-dimensional GIS environment; In the 3D GIS environment, power distribution line selection is performed, multiple candidate power distribution line schemes are generated, and 3D visualization is performed to select the optimal power distribution line scheme. The power distribution line selection process is based on the principles of terrain analysis, obstacle avoidance, and economic optimization. Selectable line areas are screened in the three-dimensional GIS environment, and then multiple power distribution line candidate schemes are generated through human-computer interactive line selection. A comprehensive collision detection is performed based on the optimal distribution network line scheme. If the detection passes, a three-dimensional model of the distribution network line project is generated according to the scheme, and corresponding construction drawings are generated from the three-dimensional model to complete the design of the distribution network line project.

2. The three-dimensional design method for distribution network line engineering according to claim 1, characterized in that, The method of UAV oblique photography is as follows: the UAV takes terrain photos at an angle tilted relative to the ground according to a pre-determined flight route plan and flight operation parameters, and stitches the acquired images to reconstruct the three-dimensional data of the terrain.

3. The three-dimensional design method for distribution network line engineering according to claim 2, characterized in that, The route planning is based on the principle of ensuring image overlap and coverage integrity.

4. The three-dimensional design method for distribution network line engineering according to claim 2, characterized in that, The flight operation parameters include flight altitude and flight speed.

5. The three-dimensional design method for distribution network line engineering according to claim 1, characterized in that, Based on the aforementioned distribution network line scheme, a three-dimensional model of the distribution network line project is generated, specifically as follows: According to the power distribution network scheme, the power distribution network is constructed in a 3D GIS environment, and standard component library is called to set line components on the power distribution network.

6. The three-dimensional design method for distribution network line engineering according to claim 5, characterized in that, The standard component library includes poles, conductors, distribution network equipment, and hardware.

7. The three-dimensional design method for distribution network line engineering according to claim 1, characterized in that, The comprehensive collision detection specifically uses a pre-established professional collision detection rule library for distribution networks to perform collision detection on distribution network line schemes. If a collision is detected, a collision warning is issued, and the location of the collision and the handling measures are recorded.

8. The three-dimensional design method for distribution network line engineering according to claim 1, characterized in that, The corresponding construction drawings are generated from the 3D model, specifically including: A plan view is generated by horizontally sectioning the 3D model; An orthographic drawing is generated by orthographic projection, with the projection direction selected based on the route or building orientation. Cutting surfaces should be set at key locations according to design requirements; Add dimensions, elevations, coordinates, and explanatory text to the generated plan views, elevations, and sections.

9. A three-dimensional design system for power distribution network engineering, characterized in that, It includes a memory and a processor, the memory storing a computer program, the processor invoking the computer program to perform the steps of the method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which is executed by a processor according to any one of claims 1 to 8.

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