A three-dimensional modeling method for double-wire clamp ground wire string

Abstract

The present application relates to a kind of double-wire clamp ground wire string three-dimensional modeling method, comprising the following steps: step S1, the deflection allowable value of each part in double-wire clamp ground wire string is calculated based on model data;Step S2, the deflection actual value of each part in double-wire clamp ground wire string is calculated based on design condition;Step S3, based on application scenario, double-wire clamp ground wire string model is constructed;The deflection allowable value of each part in double-wire clamp ground wire string is compared with the deflection actual value, and it is verified whether deflection is out of limit in the application scenario;Step S4, based on deflection actual value, each element space attitude matrix is obtained, and the expression of double-wire clamp ground wire string model in application scenario is formed;Based on the verification result, the part that is out of limit is highlighted warning, and the out of limit position is marked out.The method is conducive to improving the accuracy of modeling, and then improve the use safety of double-wire clamp ground wire string.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of three-dimensional modeling of ground wire string, and particularly relates to a three-dimensional modeling method of double-wire ground wire string. BACKGROUND

[0002] The ground wire string of overhead transmission line is used for fixing and suspending the ground wire on the straight pole tower, and is also used for supporting the ground wire on the transposition pole tower, fixing and pulling the ground wire on the tension and corner tower, and is an important fitting string type in the transmission line. With the westward shift of energy strategy, the development of energy resources in western regions such as Xinjiang will be further increased. Since the large energy base in the western region is more than 2400 kilometers away from the load center in the middle and eastern regions, the establishment of large thermal power and hydropower bases in the energy center of the western region and the transmission of large-capacity and long-distance electric energy to the load center are a good way to solve this problem. However, long-distance transmission will be affected by strong winds and sandstorms in the western region. Under the influence of such an environment, the wear and tear of the ground wire string will be aggravated, eventually leading to accidents caused by fitting wear and tear, which is harmful to the transmission line. Therefore, some data detection is required during modeling to ensure that the strength after construction is sufficient. The ground wire fitting of the double-wire ground wire string has safety hazards when deflected, but the existing modeling software cannot calculate some deflection data during modeling. Therefore, new requirements for three-dimensional modeling of fitting string are needed to guide the direction of function implementation, so a new design modeling scheme is needed. SUMMARY

[0003] The application aims to provide a three-dimensional modeling method of double-wire ground wire string, which is beneficial to improve the accuracy of modeling and further improve the safety of double-wire ground wire string.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows: a three-dimensional modeling method of double-wire ground wire string, comprising the following steps:

[0005] Step S1, calculating the deflection allowable value of each part of the double-wire ground wire string based on model data;

[0006] Step S2, calculating the deflection actual value of each part of the double-wire ground wire string based on design conditions;

[0007] Step S3, constructing a double-wire ground wire string model based on the application scenario; comparing the deflection allowable value and the deflection actual value of each part of the double-wire ground wire string to check whether the deflection is out of limit in the application scenario;

[0008] Step S4, obtaining the spatial pose matrix of each element based on the deflection actual value to form the expression of the double-wire ground wire string model in the application scenario; based on the checking result, highlighting the part that is out of limit and marking the out-of-limit position.

[0009] Further, in step S1, based on the model data, the range of the allowable turning angle of each part in the double-wire clamp ground wire string is obtained, the upper and lower limits of the rotation of the unconstrained degrees of freedom are calculated using the spatial model entity collision technology, the deflection allowable value is obtained, and the deflection allowable value is stored as the basic attribute of each part and expressed in the subsequent established model through labeling.

[0010] Further, the double-wire clamp ground wire string is processed into three parts, including:

[0011] Part 1: tower connecting fitting to triangular connecting plate connecting element part;

[0012] Part 2: triangular connecting plate part;

[0013] Part 3: triangular connecting plate to wire clamp part;

[0014] Each part is treated as a rigid body, and the relative movement between internal elements of each part is not considered.

[0015] Further, in step S2, when calculating the deflection actual value, the angle values of the three key connecting points are calculated, including: the angle between part 1 and the vertical direction, the turning angle of part 2 relative to part 1, and the turning angle of part 3 relative to part 2; so as to obtain the deflection actual value.

[0016] Further, in step S2, based on the design condition, when part 3 is deflected, the deflection of the left and right parts connected by the triangular connecting plate and the wire clamp is consistent, and the triangular connecting plate, the PS hanging plate and the wire clamp remain parallelogram.

[0017] Further, in step S2, in the calculation, whether based on the complete parameterized modeling of the existing model data software system or external model import, the size parameters and connection attributes of each element constituting the fitting string are uniformly managed in the system.

[0018] Further, in step S3, the application scenarios also include the whole scene of the tower and pole fine design, and the fitting dynamic swing checking function is provided, the fitting swing is simulated according to the input actual use condition of the tower and pole, and whether the collision occurs between the fittings is checked.

[0019] Further, in step S4, when the fittings are assembled, the digital fitting assembly function module is used to assemble the fittings or import external fitting data, and the program automatically calculates the turning angle allowable value and expresses it through the three-dimensional model labeling method.

[0020] Compared with existing technologies, this invention has the following beneficial effects: It improves the 3D modeling method for double-wire clamp ground string, which solves the problem of ground wire fittings deflecting beyond limits in specific scenarios, posing safety hazards and causing difficulties for line operation and maintenance. Leveraging the advantages of 3D design, this problem is addressed during the line design phase. New requirements are proposed for the 3D modeling function of the fitting string, guiding the direction of function implementation, resulting in better modeling effects. Applying this method to the safety evaluation of double-wire clamp ground string usage can improve the safety of double-wire clamp ground string usage. Attached Figure Description

[0021] Fig. 1 This is a flowchart illustrating the method implementation process of an embodiment of the present invention;

[0022] Fig. 2 This is a schematic diagram of the deflection of the double-wire ground string in an embodiment of the present invention;

[0023] Fig. 3 This is a schematic diagram of the model part division in an embodiment of the present invention. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] like Figs. 1-3 As shown, this embodiment provides a three-dimensional modeling method for a double-wire ground string, including the following steps:

[0028] Step S1: Calculate the allowable deflection value of each part in the double-wire ground string based on the model data.

[0029] Step S2: Calculate the actual deflection value of each part in the double-wire ground string based on the design conditions.

[0030] Step S3: Based on the application scenario, construct a double-wire clamp ground string model; compare the allowable deflection value and the actual deflection value of each part in the double-wire clamp ground string to verify whether the deflection exceeds the limit in this application scenario, and also output a full-line ground wire hardware rotation verification report.

[0031] Step S4: Based on the actual deflection value, obtain the spatial attitude matrix of each component to form the expression of the double-line ground string model in the application scenario; based on the verification results, highlight the parts that exceed the rotation limit and mark the position of exceeding the limit.

[0032] The implementation of each step will be further explained below.

[0033] S1: Deflection allowable value calculation based on model data

[0034] Based on the model data, the range of allowable rotation angles for each part of the double-wire ground string is obtained. Using spatial model entity collision technology, the upper and lower limits of rotation for unconstrained degrees of freedom are calculated and stored as basic attributes of the hardware. These attributes are then expressed in the model through annotation to obtain the allowable deflection value. During electrical design, conventional tower positioning and wiring design operations can be performed. The system automatically verifies the deflection collision of all ground hardware in the entire scenario in real time. When the designer switches working conditions, the system will re-verify based on the new working conditions.

[0035] S2: Calculation of actual deflection value based on design conditions

[0036] In this embodiment, the double-wire ground string is processed into three parts, including:

[0037] Part 1: The connection element from the tower fittings to the triangular connecting plate;

[0038] Part 2: Triangular connecting plate section;

[0039] Part 3: From the triangular connecting plate to the wire clamp;

[0040] Each part is treated as a rigid body, and the relative movement between the internal components of each part is not considered.

[0041] Since ground wire suspension deflection typically occurs under conditions of unbalanced tension, such as continuous uphill and downhill driving or uneven icing, and based on the aforementioned design conditions, combined with... Fig. 3 In the model segmentation, the angle values ​​of three key connection points need to be calculated: the angle between part 1 and the vertical direction, the rotation angle of part 2 relative to part 1, and the rotation angle of part 3 relative to part 2; thus obtaining the actual deflection value. When calculating the "model segmentation," when part 3 deflects, the left and right parts connected by the triangular connecting plate and the clamp (…) Fig. 3The deflection of the bottom of the middle part 3 (the deflection of the part 3 relative to the part 2) is consistent (the deflection refers to the angle of the part 3 relative to the part 2), the triangular connecting plate, the PS hanging plate and the wire clamp are kept in parallelogram. In the calculation, whether the complete parameterized modeling based on the software system of the company or the external model import, the size parameters and the connection properties of the elements finally forming the fitting string are uniformly managed in the system. On the basis of the above calculation, which of the six degrees of freedom of the element relative to the connection point are constrained and which are unconstrained can be automatically processed by the program; for the unconstrained degrees of freedom (translational motion is basically constrained).

[0042] S3: Combine application scenario simulation and verification

[0043] According to different application scenarios such as continuous ups and downs, uneven icing conditions and the like, the fitting string model is spun out according to the above application scenarios, the actual value of the deflection displacement is calculated according to the above method and compared with the allowable value in the model, and whether the deflection is out of limit in the application scenario is verified. The application scenario is also included in the whole scene of the tower fine design, and the fitting dynamic swing verification function is provided in the above scene. According to the actual use conditions (input conditions) of the tower, the fitting swing is simulated, and whether the fittings collide with each other is verified. The fitting string is processed into three parts, which are connected to the triangular connecting plate, the triangular connecting plate and the triangular connecting plate to the wire clamp part in turn. Each part is treated as a rigid body and the relative movement between the internal elements of each part is not considered.

[0044] S4: Express the results

[0045] Based on the actual value, the spatial attitude matrix of each element is obtained, and a new fitting model is formed to express in the scene. Based on the verification result, the fittings with rotation out of limit are highlighted in the scene, and the out-of-limit position is also marked. A report on the rotation verification of the ground wire fittings of the whole line can also be output. When the fittings are assembled, the digital fitting assembly function module is used to assemble the fittings or import external fitting data. The program automatically calculates the rotation allowable value and expresses it through the three-dimensional model marking method.

[0046] In the application, when the device is in use, in order to solve the problem that the ground wire fitting is out of limit in a specific scene, there is a safety hazard, and it brings difficulties to the line operation and inspection work. With the advantage of three-dimensional design, the problem is solved in the line design stage. A new demand for the three-dimensional modeling function of the fitting string is proposed, and the direction of function implementation is guided. The modeling effect is better.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for three-dimensional modeling of a double-wire ground line string, characterized by, The method comprises the following steps: Step S1, calculating the deflection allowable value of each part in the double-wire clamp ground wire string based on model data; Step S2, calculating the deflection actual value of each part in the double-wire clamp ground wire string based on design conditions; Step S3, constructing a double-wire clamp ground wire string model based on the application scenario, comparing the deflection allowable value and the deflection actual value of each part in the double-wire clamp ground wire string, and checking whether the deflection is out of limit in the application scenario; Step S4, obtaining the spatial pose matrix of each element based on the deflection actual value, and forming the expression of the double-wire clamp ground wire string model in the application scenario; Based on the checking result, the part with rotation out of limit is highlighted and the out-of-limit position is marked; In step S1, the range of allowable rotation angle of each part in the double-wire clamp ground wire string is obtained based on model data, the upper and lower limits of rotation of the unconstrained degree of freedom are calculated by using the spatial model entity collision technology, the deflection allowable value is obtained, and the deflection allowable value is stored as the basic attribute of each part and expressed in the subsequent established model by marking; The double-wire clamp ground wire string is processed into three parts, including: Part 1: the part from the tower connecting fitting to the connecting element with the triangular connecting plate; Part 2: the triangular connecting plate part; Part 3: the part from the triangular connecting plate to the clamp; Each part is treated as a rigid body, and the relative movement between the internal elements of each part is not considered; In step S2, the angle values of three key connecting points are calculated when calculating the deflection actual value, including the angle between part 1 and the vertical direction, the rotation angle of part 2 relative to part 1, and the rotation angle of part 3 relative to part 2; so as to obtain the deflection actual value.

2. The method of claim 1, wherein, In step S2, based on the design conditions, when part 3 is deflected, the deflection of the left and right parts connected by the triangular connecting plate and the clamp is consistent, and the triangular connecting plate, the PS hanging plate and the clamp remain parallelogram.

3. The method of claim 1, wherein, In step S2, in the calculation, whether it is complete parameterized modeling or external model import, the size parameters and connection attributes of each element constituting the fitting string are uniformly managed in the system.

4. The method of claim 1, wherein, In step S3, the application scenario also includes the whole scene of the tower fine design, and a fitting dynamic swing checking function is provided, which simulates the fitting swing according to the input actual use conditions of the tower, and checks whether the fittings collide with each other.

5. The method of claim 1, wherein, In step S4, the fittings are assembled by the digital fitting assembly function module or the external fitting data is imported, and the program automatically calculates the rotation allowable value and expresses it by three-dimensional model marking.

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