Three-dimensional modeling method and device for iron tower and wire of power transmission line and medium

Abstract

The invention relates to a three-dimensional modeling method and device for an iron tower and a wire of a power transmission line and a medium, and the method comprises the following steps: inputting iron tower design parameters and wire design parameters, and presetting a plurality of key points as wire suspension points; carrying out three-dimensional modeling on the iron tower through the tower height and the key points; calculating the lead specific load according to the lead type; calculating the horizontal stress of the lead through the lead suspension point, the lead specific load and the lead design parameters; according to the horizontal stress and the wire specific load, calculating the length of a wire in a gear, and calculating the vertical height from the wire to an abscissa axis based on the length of the wire in the gear; three-dimensional modeling of the wire is carried out through the vertical height, the in-gear wire length, the horizontal stress, the wire specific load, the iron tower design parameters and the wire design parameters. The method is particularly suitable for the preliminary design and planning stage of the iron tower and the wire. By inputting key design parameters, the three-dimensional model can be quickly generated, and visual reference is provided for design and planning.

Description

Technical Field

[0001] The invention relates to a three-dimensional modeling method, equipment and medium for an iron tower and a conductor of a power transmission line, and belongs to the technical field of power transmission line planning and construction. Background Art

[0002] In the construction of power projects, the felling of trees for overhead lines faces the following challenges: since the scope of trees to be felled cannot be accurately determined before the construction of poles and conductors is completed, the traditional two-dimensional drawing method used by the design unit is not accurate enough to meet the requirements for accurate processing of felling permits, which may not only lead to waste of resources, but also delay the progress of the project due to the need to reissue the permit. Although some studies have attempted to determine the felling scope through laser point cloud scanning technology after the completion of the line construction project, due to the long period of processing felling permits, this method cannot meet the construction period requirements of the project, and no effective solution has been found so far.

[0003] In the construction of power transmission lines, the tower is the main load-bearing structure, and its design is crucial to the safety and stability of the entire power transmission system. At present, the design of towers mainly relies on two-dimensional plane drawings. This method has a long design cycle and a complicated process, and it is difficult to achieve accurate design of tower structures under changing terrain and climate conditions. In addition, most existing three-dimensional modeling methods rely on fixed templates and manual adjustments, which limits the flexibility of the design and cannot quickly adapt to the changing needs in actual projects.

[0004] The patent document with the patent number "CN112115588A" has developed a multi-operating condition simulation analysis method for transmission line channels. The problem with this method is that it requires complex data processing and modeling work, including three-dimensional modeling of line corridors, construction of tower and conductor models, generation of conductor sag equations, etc. These processes require professional software and algorithm support, and have high requirements for technical personnel. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention proposes a method, equipment and medium for three-dimensional modeling of iron towers and conductors of a transmission line.

[0006] The technical solution of the present invention is as follows:

[0007] In one aspect, the present invention provides a method for three-dimensional modeling of a tower and a conductor of a transmission line, comprising the following steps:

[0008] Input tower design parameters and conductor design parameters, wherein the tower design parameters include tower height and key points, and preset several key points as conductor suspension points. The conductor design parameters include conductor type, span, and height difference of conductor suspension points. The key points are connection points of different structures of the tower;

[0009] Carry out 3D modeling of the tower through tower height and key points;

[0010] Calculate the conductor load ratio according to the conductor type;

[0011] Calculate the horizontal stress of the conductor through the conductor suspension point, conductor load and conductor design parameters;

[0012] Calculating the length of the conductor in the span according to the horizontal stress and the conductor load ratio, and calculating the vertical height from the conductor to the horizontal axis based on the length of the conductor in the span;

[0013] The three-dimensional modeling of the conductor is carried out through the vertical height, the line length in the section, the horizontal stress, the conductor load ratio, the tower design parameters and the conductor design parameters.

[0014] As a preferred implementation, the method for calculating the conductor load ratio is:

[0015] Obtain the conductor cross-sectional area A and unit load g according to the conductor type;

[0016] Calculate the conductor specific load using the cross-sectional area A and the unit load g:

[0017]

[0018] Where r represents the conductor load ratio.

[0019] As a preferred implementation, the calculation method of the horizontal stress is:

[0020]

[0021] Among them, f m represents the preset conductor sag, l represents the span, l 2 It represents the square of the span, σ0 represents the horizontal stress of the conductor, and β represents the height difference angle of the conductor suspension point.

[0022] As a preferred implementation, the calculation method of the line length in the gear is:

[0023]

[0024] In fact, L represents the length of the inner line, sh represents the hyperbolic sine function, l oA It means that the rectangular coordinate system is established with the wire suspension point A as the origin. The horizontal distance from the lowest point of the wire to the wire suspension point A is l oB Indicates the horizontal distance from the lowest point of the wire to the wire hanging point B.

[0025] As a preferred embodiment, the horizontal distance l from the lowest point of the wire to the wire suspension point A is oA The calculation method is:

[0026]

[0027] The horizontal distance l from the lowest point of the wire to the wire suspension point B oB The calculation method is:

[0028]

[0029] Among them, arcsh represents the inverse hyperbolic sine function, and h represents the height difference of the wire hanging point.

[0030] As a preferred implementation, the vertical height is calculated as follows:

[0031]

[0032] in, represents the vertical height from the wire to the horizontal axis, ch represents the hyperbolic cosine function, Indicates the preset value in the x-axis direction.

[0033] As a preferred implementation, the vertical height is calculated as follows:

[0034]

[0035] As a preferred implementation, the tower height and key points are input into the modeling software Tower, and the key points are connected by the modeling software Tower to generate a three-dimensional model of the tower;

[0036] The vertical height, line length within the fence, horizontal stress, conductor load ratio, tower design parameters and conductor design parameters are input into the modeling software Tower, and a three-dimensional model of the tower is generated through a preset automated script program.

[0037] On the other hand, the present invention further provides an electronic device having a computer program stored thereon, wherein when the computer program is executed by a processor, the method for three-dimensional modeling of towers and conductors of a transmission line as described in any embodiment of the present invention is implemented.

[0038] On the other hand, the present invention also provides a computer-readable storage medium for storing one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the three-dimensional modeling method of towers and conductors of transmission lines as described in any embodiment of the present invention.

[0039] The present invention has the following beneficial effects:

[0040] The present invention is particularly suitable for the preliminary design and planning stages of towers and conductors. By inputting key design parameters, a three-dimensional model can be quickly generated to provide an intuitive reference for design and planning. Although modeling and analysis are mainly based on design parameters, the results can be adapted to different operating conditions. For example, different parameters such as conductor types, spans, or height differences of conductor suspension points can be input to evaluate performance under different operating conditions. The generated three-dimensional model can be used for more in-depth design optimization and resource allocation. For example, parameters such as the height of the tower, structural layout, or conductor type can be adjusted to optimize overall performance and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The present invention is a flowchart for implementing the method.

[0042] Figure 2 It is a schematic diagram of three-dimensional modeling of the iron tower of the present invention.

[0043] Figure 3 It is a cross-sectional view of the conductor structure of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be understood that the step numbers used in this document are only for convenience of description and are not intended to limit the order in which the steps are executed.

[0046] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0047] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0048] The term "and / or" means and includes any and all possible combinations of one or more of the associated listed items.

[0049] Embodiment 1:

[0050] See also Figure 1-2 The present invention provides a method for three-dimensional modeling of a tower and a conductor of a power transmission line, comprising the following steps:

[0051] Input tower design parameters and conductor design parameters, wherein the tower design parameters include tower height and key points, and preset several key points as conductor suspension points. The conductor design parameters include conductor type, span, and height difference of conductor suspension points. The key points are connection points of different structures of the tower;

[0052] Carry out 3D modeling of the tower through tower height and key points;

[0053] Calculate the conductor load ratio according to the conductor type;

[0054] Calculate the horizontal stress of the conductor through the conductor suspension point, conductor load and conductor design parameters;

[0055] Calculating the length of the conductor in the span according to the horizontal stress and the conductor load ratio, and calculating the vertical height from the conductor to the horizontal axis based on the length of the conductor in the span;

[0056] The three-dimensional modeling of the conductor is carried out through the vertical height, the line length in the section, the horizontal stress, the conductor load ratio, the tower design parameters and the conductor design parameters.

[0057] The final optimized tower model is exported as a 3D drawing or other format file, such as a CAD model, which can be used for design and engineering.

[0058] As a preferred implementation, the method for calculating the conductor load ratio is:

[0059] Obtain the conductor cross-sectional area A and unit load g according to the conductor type;

[0060] Calculate the conductor specific load using the cross-sectional area A and the unit load g:

[0061]

[0062] Where r represents the conductor load ratio.

[0063] As a preferred implementation, the calculation method of the horizontal stress is:

[0064]

[0065] Among them, f m represents the preset conductor sag, l represents the span, l 2 represents the square of the span, σ0 represents the horizontal stress of the conductor, and β represents the height difference angle of the conductor suspension point;

[0066] The height difference angle of the wire suspension point is expressed as:

[0067]

[0068] Here, h represents the height difference.

[0069] See also Figure 3 As a preferred implementation, the calculation method of the line length in the file is:

[0070]

[0071] In fact, L represents the length of the inner line, sh represents the hyperbolic sine function, l oA It means that the rectangular coordinate system is established with the wire suspension point A as the origin. The horizontal distance from the lowest point of the wire to the wire suspension point A is l oB Indicates the horizontal distance from the lowest point of the wire to the wire hanging point B.

[0072] As a preferred embodiment, the horizontal distance l from the lowest point of the wire to the wire suspension point A is oA The calculation method is:

[0073]

[0074] The horizontal distance l from the lowest point of the wire to the wire suspension point B oB The calculation method is:

[0075]

[0076] Among them, arcsh represents the inverse hyperbolic sine function, and h represents the height difference of the wire hanging point.

[0077] As a preferred implementation, the vertical height is calculated as follows:

[0078]

[0079] in, represents the vertical height from the wire to the horizontal axis, ch represents the hyperbolic cosine function, Indicates the preset value in the x-axis direction.

[0080] As a preferred implementation, the vertical height is calculated as follows:

[0081]

[0082] In this arrangement, the wire is fixed between two wire suspension points A and B. Considering the flexible characteristics of the wire material (i.e., the wire does not bear obvious bending stress), the wire will form a natural drooping shape when subjected to force. For this case, when the length of the wire is long and the span used (i.e., the horizontal distance between the wire suspension points A and B) is large enough, the rigidity effect of the wire material can be ignored. In this case, the wire is mainly subjected to loads evenly distributed along the length of the wire, such as its own weight, environmental factors (such as wind load), etc. Therefore, the hanging shape of the wire can be approximately regarded as a catenary shape.

[0083] The catenary is a typical curve in mathematical physics, characterized by the shape formed by a flexible rope, chain or cable with uniform linear density that is freely suspended between two fixed points. Unlike a parabola, the curvature of a catenary is not constant, but varies with position, depending mainly on the tension and length of the rope and the load it bears. For transmission lines, the shape of the catenary not only ensures the mechanical stability of the wire, but also effectively reduces the sag of the wire by optimizing its tension and suspension height, thereby preventing the wire from sagging excessively or coming into contact with the ground, trees and other objects, and ensuring the safety and stability of the line.

[0084] As a preferred implementation, the tower height and key points are input into the modeling software Tower, and the key points are connected by the modeling software Tower to generate a three-dimensional model of the tower;

[0085] The vertical height, line length within the fence, horizontal stress, conductor load ratio, tower design parameters and conductor design parameters are input into the modeling software Tower, and a three-dimensional model of the tower is generated through a preset automated script program.

[0086] The Tower software is a design method that creates a three-dimensional digital model that can be dynamically adjusted and modified by defining key parameters of geometric features. For transmission line towers, this modeling method can transform the complex tower structure into a set of controllable mathematical parameters and constraints, making the model highly flexible and reusable.

[0087] The specific implementation process includes the following key links:

[0088] (1) Parameter definition

[0089] First, the physical characteristics of the tower need to be abstracted into a series of quantifiable parameters, including:

[0090] Tower height: including total height and segment height

[0091] Tower width: horizontal and vertical width

[0092] Crossarm dimensions: length, angle, spacing

[0093] Node coordinates: exact location of connection points

[0094] (2) Establishment of constraint conditions

[0095] Verticality constraint: ensure the overall verticality of the tower

[0096] Symmetry constraints: ensuring left-right structural balance

[0097] Angle constraint: cross arm and diagonal brace angle range

[0098] Length ratio constraint: association of different part sizes

[0099] (3) Parameter relationship linkage

[0100] In a parametric model, changes in certain parameters will automatically cause adjustments to other related parameters. Algorithms are used to automatically calculate and update the model, allowing for rapid adjustment and optimization of the model without human intervention.

[0101] Through this parametric modeling method, designers can carry out digital design of transmission line towers more efficiently and flexibly, realizing the transition from traditional drawing to intelligent parametric design.

[0102] Embodiment 2:

[0103] This embodiment provides an electronic device having a computer program stored thereon, and when the computer program is executed by a processor, the method for three-dimensional modeling of towers and conductors of a power transmission line as described in any embodiment of the present invention is implemented.

[0104] Embodiment three:

[0105] This embodiment provides a computer-readable storage medium for storing one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the three-dimensional modeling method of towers and conductors of transmission lines as described in any embodiment of the present invention.

[0106] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0107] Those of ordinary skill in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0108] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0109] In several embodiments provided in the present application, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), disk or optical disk, and other media that can store program codes.

[0110] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A three-dimensional modeling method for towers and conductors of a transmission line, characterized in that: The following steps are involved: Input tower design parameters and conductor design parameters, wherein the tower design parameters include tower height and key points, and preset several key points as conductor suspension points. The conductor design parameters include conductor type, span, and height difference of conductor suspension points. The key points are connection points of different structures of the tower; Carry out 3D modeling of the tower through tower height and key points; Calculate the conductor load ratio according to the conductor type; Calculate the horizontal stress of the conductor through the conductor suspension point, conductor load and conductor design parameters; Calculating the length of the conductor in the span according to the horizontal stress and the conductor load ratio, and calculating the vertical height from the conductor to the horizontal axis based on the length of the conductor in the span; The three-dimensional modeling of the conductor is carried out through the vertical height, the line length in the section, the horizontal stress, the conductor load ratio, the tower design parameters and the conductor design parameters.

2. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 1, characterized in that: The calculation method of the conductor load ratio is: Obtain the conductor cross-sectional area A and unit load g according to the conductor type; Calculate the conductor specific load using the cross-sectional area A and the unit load g: Where r represents the conductor load ratio.

3. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 2, characterized in that: The calculation method of the horizontal stress is: Among them, f m represents the preset conductor sag, l represents the span, l 2 It represents the square of the span, σ0 represents the horizontal stress of the conductor, and β represents the height difference angle of the conductor suspension point.

4. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 3, characterized in that: The calculation method of the line length in the file is: In fact, L represents the length of the inner line, sh represents the hyperbolic sine function, l oA It means that the rectangular coordinate system is established with the wire suspension point A as the origin. The horizontal distance from the lowest point of the wire to the wire suspension point A is l oB Indicates the horizontal distance from the lowest point of the wire to the wire hanging point B.

5. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 4, characterized in that: The horizontal distance l from the lowest point of the wire to the wire suspension point A oA The calculation method is: The horizontal distance l from the lowest point of the wire to the wire suspension point B oB The calculation method is: Among them, arcsh represents the inverse hyperbolic sine function, and h represents the height difference of the wire hanging point.

6. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 5, characterized in that: The vertical height is calculated as follows: in, represents the vertical height from the wire to the horizontal axis, ch represents the hyperbolic cosine function, Indicates the preset value in the x-axis direction.

7. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 5, characterized in that: The vertical height is calculated as follows:

8. The method for three-dimensional modeling of towers and conductors of a power transmission line according to claim 1, characterized in that: Input the tower height and key points into the modeling software Tower, and connect the key points through the modeling software Tower to generate a three-dimensional model of the tower; The vertical height, line length within the fence, horizontal stress, conductor load ratio, tower design parameters and conductor design parameters are input into the modeling software Tower, and a three-dimensional model of the tower is generated through a preset automated script program.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method for three-dimensional modeling of towers and conductors of a transmission line as described in any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for three-dimensional modeling of towers and conductors of a transmission line as described in any one of claims 1 to 8 is implemented.

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