Overhead transmission line crossing construction simulation system based on three-dimensional model scene

Abstract

The invention discloses an overhead transmission line crossing construction simulation system based on a three-dimensional model scene, and aims to solve the problem that the functions of optimal path scheme selection, important crossing construction scheme design, important crossing safety check, cost evaluation and the like cannot be performed in a three-dimensional simulation scene at present. The system comprises a virtual arrangement module, a construction simulation module, a virtual scene construction module, a construction site virtual arrangement module, a dynamic simulation module, a collision detection module, a data acquisition and analysis module and a man-machine interaction module. According to the method, the functions of optimal path scheme selection, important crossing construction scheme design, important crossing safety check, cost evaluation and the like in a three-dimensional simulation scene are realized; and the design precision and depth of the important crossing of the early-stage line are improved, so that the waste of the construction period and the construction cost caused by the change of the construction scheme is reduced, and wide application prospects and economic benefits are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of crossing and spanning overhead transmission lines, and in particular to a crossing and spanning construction simulation system for overhead transmission lines based on a three-dimensional model scene. Background Art

[0002] Crossing is an important part of overhead transmission lines. It involves many external units and is prone to accidents. Once an accident occurs, the impact is large, which can cause serious consequences such as traffic interruption, communication suspension, and large-scale power outages. Therefore, the survey, design, and construction of crossings are very important.

[0003] At present, the cross-span is designed on a two-dimensional plane, the model is relatively simplified, and the verification of the spatial distance is not accurate enough; with the continuous development of power grid construction, the line space corridors are becoming fewer and fewer, and the cross-span is becoming more and more complex. This requires the establishment of a more accurate three-dimensional cross-span model, the use of spatial distance measurement to conduct a rigorous three-dimensional cross-span electrical verification of the transmission line, the design of a more suitable cross-span scheme, and the proposal of a more accurate cross-span construction scheme. In the process of realizing the invention, the inventor found that at least the following problems in the prior art have not been solved. The traditional overhead transmission line cross-span construction simulation system based on a three-dimensional model scene cannot make the optimal path plan selection, important cross-span construction plan design, important cross-span safety verification and cost evaluation functions in the three-dimensional simulation scene, which reduces the accuracy and depth of the early line important cross-span design, thereby increasing the construction period and construction cost waste caused by the change of the construction plan. For this reason, it is necessary to design a new technical solution to solve it. Summary of the invention

[0004] The purpose of the present invention is to provide an overhead transmission line crossing construction simulation system based on a three-dimensional model scene, so as to solve the technical problem that the current overhead transmission line crossing construction simulation system based on a three-dimensional model scene cannot make functions such as optimal path plan selection, important crossing construction plan design, important crossing safety verification and cost evaluation in a three-dimensional simulation scene, which reduces the accuracy and depth of the early important crossing design of the line, thereby increasing the construction period and construction cost waste caused by changes in the construction plan.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an overhead power transmission line crossing construction simulation system based on a three-dimensional model scene, comprising a virtual layout module, a construction simulation module, a virtual scene construction module, a construction site virtual layout module, a dynamic simulation module, a collision detection module, a data acquisition and analysis module and a human-computer interaction module; Virtual layout module: used to edit and arrange the construction plan of overhead transmission line crossing in a virtual environment; Construction simulation module: simulates the actual construction process and displays construction dynamics; ‌Virtual scene construction module: Use BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, towers, and spanning objects; Construction site virtual layout module: According to the construction plan, pole tower positioning, conductor route planning and spanning frame erection and layout work are carried out in the virtual scene; Dynamic simulation module: simulates various dynamic changes in the construction process through animation simulation technology; Collision detection module: It can detect the collision between models in real time during the virtual construction process. Once a collision or safety hazard is found, it can immediately issue a warning to prompt the construction personnel to make adjustments; Data collection and analysis module: records various data during the construction process, and evaluates construction efficiency, safety and optimization space of the construction plan through data analysis; Human-computer interaction module: Users control the observation viewpoint of the virtual scene through an external interface, freely select a suitable viewpoint for observation, simulate the dynamic process of construction, and realize the dynamic arrangement of construction equipment and issuance of instructions in the construction scene.

[0006] As a preferred embodiment of the present invention, the editing and arranging contents include pole tower positions, conductor directions and spanning frame settings, and the simulating actual construction process and displaying construction dynamics include erecting spanning frames, laying capping nets and laying out conductors.

[0007] As a preferred embodiment of the present invention, the spanning object includes a building, a river and a railway.

[0008] As a preferred embodiment of the present invention, the various dynamic changes include tension changes during the conductor deployment process and stability during the spanning frame erection process.

[0009] As a preferred implementation manner of the present invention, the collision condition includes whether the safety distance between the conductor and the crossing object meets the requirements and whether the crossing frame is stable.

[0010] As a preferred embodiment of the present invention, the various data recorded during the construction process include conductor tension, span height and construction time.

[0011] As a preferred embodiment of the present invention, the BIM (Building Information Model) includes a precise planning module, a virtual construction module, a collision checking module and a conflict calling module; 3D visualization technology converts data describing physical phenomena into graphics and images, and uses visual expressions such as color, perspective, animation, and real-time changes in viewing angles to enable observation of invisible objects and insight into the internal structure of things. The Grid Information Model (GIM) realizes 3D visualization and information sharing of power transmission and transformation projects through information modeling technology and digital collaborative design. Three-dimensional simulation technology uses computer three-dimensional graphics processing technology to generate three-dimensional real-life line corridors based on geographic information data and survey data, and through engineering models, construction machinery, poles, crossing frames, protective nets and other equipment models in the system library, the transmission line construction site is displayed in three dimensions through electrical calculations.

[0012] As a preferred embodiment of the present invention, the specific steps of creating realistic virtual models of overhead transmission lines, poles and spanning objects by using BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology are as follows: first, using BIM technology to model the power grid transmission line, realize 3D stereoscopic display, and present the lines, poles and equipment elements in a virtual environment, so that designers and construction personnel can understand the entire project more intuitively; Secondly, the verification and visualization method of the transmission line crossing construction plan based on 3D GIS establishes a calculation model of the crossing construction plan, and uses the 3D GIS system platform to efficiently complete the whole process calculation model and visualization of the transmission line crossing construction plan without crossing frames and without power outages.

[0013] As a preferred embodiment of the present invention, the use of BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, poles and spanning objects also renders all relevant scenes through a 3D engine. During the tower material rendering process, the positions of two fixed points on the tower material are calculated, and then the overall center position and orientation of the tower material are determined. The position is determined by calculating each frame, and finally the intermediate interpolation is performed to complete the smooth movement process of the hoisting.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Based on the three-dimensional digital design results, BIM technology, and three-dimensional visualization technology, the present invention constructs a set of three-dimensional mechanized construction auxiliary system for important intersections and spans, realizing the functions of optimal path scheme selection, important intersection and span construction scheme design, important intersection and span safety verification, and cost evaluation in a three-dimensional simulation scenario; improving the design accuracy and depth of important intersections and spans of early lines, thereby reducing the construction period and construction cost waste caused by changes in construction schemes, and having broad application prospects and economic benefits; Moreover, through the effective integration of 3D design results with the design of important crossing schemes, real-time interactive simulation is carried out to guide the construction party to control the construction machinery and resource allocation methods from a macro perspective, and to refine the construction and process simulation of important crossings from a micro perspective, to comprehensively and efficiently assist the mechanized construction of the entire process of important crossings, to ensure construction quality and shorten the construction period; to truly realize the refined management of the construction of important crossings of transmission lines, and then promote the transformation of the construction management mode of transmission line projects, enhance the professional capabilities of power grid construction, and empower the construction of a strong and smart power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Example 1: Overhead transmission line crossing construction simulation system based on three-dimensional model scene, see Figure 1 , including virtual layout module, construction simulation module, virtual scene construction module, construction site virtual layout module, dynamic simulation module, collision detection module, data acquisition and analysis module and human-computer interaction module; Virtual layout module: used to edit and arrange the construction plan of overhead transmission line crossing in a virtual environment; Construction simulation module: simulates the actual construction process and displays construction dynamics; ‌Virtual scene construction module: Use BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, towers, and spanning objects; Construction site virtual layout module: According to the construction plan, pole tower positioning, conductor route planning and spanning frame erection and layout work are carried out in the virtual scene; Dynamic simulation module: simulates various dynamic changes in the construction process through animation simulation technology; Collision detection module: It can detect the collision between models in real time during the virtual construction process. Once a collision or safety hazard is found, it can immediately issue a warning to prompt the construction personnel to make adjustments; Data collection and analysis module: records various data during the construction process, and evaluates construction efficiency, safety and optimization space of the construction plan through data analysis; ‌Human-computer interaction module: Users control the observation viewpoint of the virtual scene through an external interface, freely select a suitable viewpoint for observation, simulate the dynamic process of construction, and realize the dynamic arrangement and instruction issuance of construction equipment in the construction scene, working principle and benefits.

[0018] Specifically, the editing and arrangement contents include the location of pole towers, the direction of conductors and the setting of spanning frames, and the simulation of the actual construction process and the display of construction dynamics include the various links of erecting spanning frames, laying capping nets and laying out conductors.

[0019] Furthermore, the crossing objects include buildings, rivers and railways.

[0020] Furthermore, the various dynamic changes include tension changes during the conductor deployment process and stability during the spanning frame erection process.

[0021] It is worth noting that the collision situation includes whether the safety distance between the conductor and the crossing object meets the requirements and whether the crossing frame is stable.

[0022] It is worth noting that the various data recorded during the construction process include conductor tension, span height and construction time.

[0023] It is worth mentioning that the BIM (Building Information Model) includes a precise planning module, a virtual construction module, a collision check module and a conflict call module; 3D visualization technology converts data describing physical phenomena into graphics and images, and uses visual expressions such as color, perspective, animation, and real-time changes in viewing angles to enable observation of invisible objects and insight into the internal structure of things. The Grid Information Model (GIM) realizes 3D visualization and information sharing of power transmission and transformation projects through information modeling technology and digital collaborative design. Three-dimensional simulation technology uses computer three-dimensional graphics processing technology to generate three-dimensional real-life line corridors based on geographic information data and survey data, and through engineering models, construction machinery, poles, crossing frames, protective nets and other equipment models in the system library, the transmission line construction site is displayed in three dimensions through electrical calculations.

[0024] It is worth emphasizing that the specific steps of using BIM (Building Information Modeling), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, poles and spanning objects are as follows: First, use BIM technology to model the power grid transmission lines, realize 3D stereoscopic display, and present the lines, poles and equipment elements in a virtual environment, so that designers and construction personnel can understand the entire project more intuitively. Through 3D modeling, design errors and conflicts can be discovered in time to avoid unnecessary delays and losses in the actual construction process. In addition, BIM technology can also realize the integration of different data sources, integrating terrain, meteorology, soil and other information into a unified platform, providing a comprehensive reference basis for the design and planning of power grid transmission lines. At the same time, BIM technology can achieve seamless docking with other professional software, realize data sharing and interoperability, and improve design efficiency and accuracy; Secondly, the verification and visualization method of the transmission line crossing construction plan based on 3D GIS, by establishing the calculation model of the crossing construction plan, with the help of the 3D GIS system platform, the whole process calculation model and visualization of the transmission line crossing construction plan without crossing frame and non-stop power supply can be efficiently completed, including multi-source massive spatial geographic information data storage and management technology, to achieve efficient scheduling and seamless browsing of multi-source scene data; the calculation model of the transmission line crossing plan without crossing frame and non-stop power supply, by inputting the data of the crossing plan collected in the design and on-site, the result data required for the crossing plan is calculated, and the feasibility of the plan is fed back; the 3D visualization technology of the crossing plan, according to the parameters and result data of the crossing plan, restores the construction environment in the 3D GIS and automatically generates it; All relevant scenes are rendered through a 3D engine. During the tower material rendering process, the positions of the two fixed points on the tower material are calculated, and then the overall center position and orientation of the tower material are determined. The position is determined by calculating each frame, and finally the intermediate interpolation is performed to complete the smooth movement process of the hoisting. Under the conditions of 3D virtual simulation, during the virtual construction of the transmission line, the tower leg hoisting process is simulated. By using the virtual simulation of this algorithm process, the movement law of the tower leg is more in line with the actual situation and the hoisting process is more realistic.

[0025] It should be noted that the Building Information Model (BIM) contains both the two-dimensional geometric information of the building and other information such as the building's materials, prices, and engineering progress. BIM technology is based on the multi-dimensional data of the project and constructs the building through three-dimensional modeling. It has an actual parameter indicator system and realizes the characteristics of information association, parameter visualization, information completeness, consistency, coordination, simulation, optimization, and mappability. In the entire process of project design, construction, and operation, it effectively realizes the collection, processing, storage, and communication of engineering information, thereby supporting the highest decision makers of the project to coordinate, plan, and control the project reasonably, becoming the primary core technology for the development of informatization in the construction industry. The relevant research on the power industry systematically analyzes the application focus of each stage of power transmission and transformation project informatization and the application of digital technology, and proposes the Grid Information Model (GIM). Relying on the Geographic Information System (GIS), the components of the power grid are digitized, and the information model is used as a carrier to integrate the information of each element throughout its life cycle, so as to achieve efficient, accurate and comprehensive application of information; The power industry has applied GIM technology and achieved results in design coordination, energy conservation and emission, collision inspection, simulation rehearsal, construction layout, etc., which has effectively saved construction costs, improved construction efficiency, and shortened construction period.

[0026] Based on GIM technology, integrating the macro-geographic environment and other elements provided by the Geographic Information System (GIS), a three-dimensional digital design platform for power grid projects is constructed. During the planning, design, and construction phases, three-dimensional modeling technology and digital collaborative design technology are integrated to achieve three-dimensional visualization design and information integration for the entire process of power transmission and transformation project design. With its multi-angle and all-round graphic display interface, 3D design allows relevant personnel to clearly understand the spatial relationship, equipment and facility locations, etc. in the project. At the same time, due to the digitalization and parameterization technology of 3D design, the data information of each component in the project can also be incorporated into it, so that the entire building can not only show the geometric characteristics in the space, but also the physical characteristics and functional characteristics of the building. Digital 3D design results and related geographic information data are the most important and comprehensive information sources for informatization. GIM modeling can also better express design intentions. 3D digital design will have the following characteristics: Digital design based on standard database The three-dimensional design of power transmission and transformation projects is centered on the engineering database, and the related drawings can be automatically generated. The database equipment model adopts the State Grid Corporation's general model library (2018 edition), and the model files are uniformly formatted in GIM format, which unifies the equipment types from the source. During the engineering design process, each discipline is carried out simultaneously on the collaborative platform, and the adjustments and modifications of the drawings of this discipline can be seen by the relevant professional designers. Through data sharing, the design of one project is modified, and multiple related drawings are automatically updated, and the relevant designers are reminded in time, avoiding information transmission errors caused by multiple funding between disciplines, and effectively reducing the probability of errors in interfaces between disciplines; Standardized design system As a carrier and application tool for professional knowledge and basic design data of design units, the 3D design platform helps designers realize the operation modes of "massive retrieval", "precise positioning" and "full disk reuse" by providing resources such as standardized engineering libraries and equipment databases. Designers can choose different equipment types according to the specific needs of the project during the engineering design stage. Database equipment selection can be quickly retrieved based on information such as "model", "manufacturer", and "voltage level", which is convenient for designers to choose; Refined design Based on the refined design of the three-dimensional model, it has the capabilities of collision check and safety clearance verification, which fundamentally avoids design errors, avoids rework, and effectively saves time for on-site problem solving. The three-dimensional design software has its own collision check function, which can automatically check the collision of the main equipment of the project with the surrounding objects and the foundations of various equipment in the power transmission and transformation project, and display the three-dimensional space through three-dimensional design, with good visualization effect. The safety clearance verification function can automatically check whether the electrical clearance of equipment materials and the safety distance between equipment and the ground meet the requirements according to the requirements of regulations and the actual situation of the project. For example, when there are many inlet and outlet line loops or the wiring type is complex, there is a spatial intersection between the live equipment and the wires. If the design is based only on the two-dimensional graphical interface, the safety distance verification is time-consuming, labor-intensive and has a high error rate. The three-dimensional design not only provides all-round 360° rotation observation, but also effectively reduces the design cycle and improves the design work efficiency through the automatic clearance verification function; Sharing of design results The design of power transmission and transformation projects is generally divided into four stages: feasibility study design, preliminary design, construction drawing design and completion drawing design. The three-dimensional design uses a common design model in the four stages. The model is established in the equipment bidding stage and circulated in each stage through continuous refinement of design information, which maximizes the sharing of design results throughout the entire design cycle and effectively shortens the design cycle.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Overhead power transmission line crossing construction simulation system based on 3D model scene, characterized by: It includes virtual layout module, construction simulation module, virtual scene construction module, construction site virtual layout module, dynamic simulation module, collision detection module, data acquisition and analysis module and human-computer interaction module; Virtual layout module: used to edit and arrange the construction plan of overhead transmission line crossing in a virtual environment; Construction simulation module: simulates the actual construction process and displays construction dynamics; ‌Virtual scene construction module: Use BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, towers, and spanning objects; Construction site virtual layout module: According to the construction plan, pole tower positioning, conductor route planning and spanning frame erection and layout work are carried out in the virtual scene; Dynamic simulation module: simulates various dynamic changes in the construction process through animation simulation technology; Collision detection module: It can detect the collision between models in real time during the virtual construction process. Once a collision or safety hazard is found, it can immediately issue a warning to prompt the construction personnel to make adjustments; Data collection and analysis module: records various data during the construction process, and evaluates construction efficiency, safety and optimization space of the construction plan through data analysis; Human-computer interaction module: Users control the observation viewpoint of the virtual scene through an external interface, freely select a suitable viewpoint for observation, simulate the dynamic process of construction, and realize the dynamic arrangement of construction equipment and issuance of instructions in the construction scene.

2. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized in that: The editing and arrangement contents include the location of pole towers, the direction of conductors and the setting of spanning frames. The simulation of the actual construction process and the display of construction dynamics include the various links of erecting spanning frames, laying capping nets and laying out conductors.

3. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized in that: The spanning objects include buildings, rivers and railways.

4. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized in that: The various dynamic changes include tension changes during the conductor deployment process and stability during the spanning frame erection process.

5. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized in that: The collision condition includes whether the safety distance between the conductor and the crossing object meets the requirements and whether the crossing frame is stable.

6. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized by: The various data recorded during the construction process include conductor tension, span height and construction time.

7. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized by: The BIM (Building Information Model) includes a precise planning module, a virtual construction module, a collision check module and a conflict call module; 3D visualization technology converts data describing physical phenomena into graphics and images, and uses visual expressions such as color, perspective, animation, and real-time changes in viewing angles to enable observation of invisible objects and insight into the internal structure of things. The Grid Information Model (GIM) realizes 3D visualization and information sharing of power transmission and transformation projects through information modeling technology and digital collaborative design. Three-dimensional simulation technology uses computer three-dimensional graphics processing technology to generate three-dimensional real-life line corridors based on geographic information data and survey data, and through engineering models, construction machinery, poles, crossing frames, protective nets and other equipment models in the system library, the transmission line construction site is displayed in three dimensions through electrical calculations.

8. The overhead power transmission line crossing construction simulation system based on a three-dimensional model scene according to claim 1 is characterized by: The specific steps of using BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, poles and spanning objects are as follows: first, using BIM technology to model the power grid transmission lines, realize 3D stereoscopic display, and present the lines, poles and equipment elements in a virtual environment, so that designers and construction personnel can understand the entire project more intuitively; Secondly, the verification and visualization method of the transmission line crossing construction plan based on 3D GIS establishes a calculation model of the crossing construction plan, and uses the 3D GIS system platform to efficiently complete the whole process calculation model and visualization of the transmission line crossing construction plan without crossing frames and without power outages.

9. The overhead power transmission line crossing construction simulation system based on three-dimensional model scene according to claim 8 is characterized by: The use of BIM (Building Information Model), 3D visualization technology, grid information model GIM, and 3D simulation technology to create realistic virtual models of overhead transmission lines, towers, and spanning objects also uses a 3D engine to render all relevant scenes. During the tower material rendering process, the positions of two fixed points on the tower material are calculated, and then the overall center position and orientation of the tower material are determined. The position is determined by calculating each frame, and finally the intermediate interpolation is performed to complete the smooth movement process of the hoisting.

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