Method and device for adjusting length of splayed string of splayed string suspension
By calculating the design parameters of the suspension string and adjusting the string length using the tangent of the conductor inclination angle between strings and the load balance formula, the problem of uneven force on the two limbs of the suspension string was solved, thus improving the safety of overhead transmission lines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
- Filing Date
- 2026-04-16
- Publication Date
- 2026-07-24
AI Technical Summary
In overhead transmission lines, the V-shaped suspension string has a large difference in stress between the two legs, resulting in insufficient safety margin. Existing technologies cannot effectively balance the load distribution.
By calculating the design parameters of the suspension string, and using the tangent of the inclination angle between the strings, the horizontal tension, and the vertical load balance formula of the two limbs, the length of the suspension string can be adjusted to achieve balanced load distribution and improve the safety margin.
Without changing the tonnage and structure of the suspension string, the load distribution between the two legs of the suspension string is balanced, thereby improving the operational safety of overhead transmission lines.
Smart Images
Figure CN122452116A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of overhead transmission line design technology, and specifically relates to a method and device for adjusting the length of a figure-eight suspension string to evenly distribute the load. Background Technology
[0002] The figure-eight suspension string is a widely used type of suspension string in overhead transmission lines, which can improve the clearance margin of the line. In actual lines, the vertical spans of the conductors before and after the suspension string (the vertical spans of the first and second conductors) are often different. At the same time, the figure-eight suspension string is simultaneously subjected to vertical conductor loads and conductor tangential force loads, making the stress more complex than that of a vertically selected type, and more likely to result in excessively large differences in stress between the two legs. Although by selecting an appropriate suspension string tonnage, the suspension string can meet the corresponding safety factor, the safety margin of the leg with greater stress is relatively small. Summary of the Invention
[0003] Objective: In order to overcome the shortcomings of the existing technology, the present invention provides a method and device for adjusting the length of a figure-eight type suspension string with balanced load distribution.
[0004] Technical solution: To solve the above technical problems, the technical solution adopted by the present invention is as follows: Firstly, a method for adjusting the length of a V-shaped suspension string that evenly distributes load is provided, including: Obtain transmission line design parameter data, including suspension string hanging point spacing, first suspension string vertical load, second suspension string vertical load, original length of suspension string, suspension string figure-eight angle, inter-span conductor horizontal tension, first conductor vertical load, and second conductor vertical load. The transmission line design parameter data are input into the pre-constructed formulas for the tangent of the inter-string conductor inclination angle, the horizontal tension of the inter-string conductor, and the vertical load balance formula for the two limbs of the suspension string to calculate the string length adjustment length; Adjust the length of the suspension string according to the string length adjustment to evenly distribute the load.
[0005] In some embodiments, the formula for the tangent of the inter-conductor tilt angle is: ; Where θ represents the inclination angle between the conductors. Indicates the length adjustment of the string. The figure-eight angle of the suspension string is represented by λ, e represents the spacing between the suspension string hanging points, and λ represents the slant angle of the suspension string. b This indicates the original length of the dangling string.
[0006] In some embodiments, the formula for the horizontal tension of the inter-string conductors is: ; Among them, T eT represents the horizontal tension between conductors. o G represents the horizontal tension of the conductor between spans. b W represents the vertical load of the first suspension string. b θ represents the vertical load on the first conductor, and θ represents the inclination angle between the conductors in series. This indicates a hanging string with a figure-eight angle.
[0007] In some embodiments, the vertical load balance formula for the two legs of the suspension string is: ; Among them, G a W represents the vertical load of the second suspension string. a T represents the vertical load on the second conductor. e G represents the horizontal tension between conductors, θ represents the inclination angle between conductors, and G represents the horizontal tension between conductors. b W represents the vertical load of the first suspension string. b This indicates the vertical load on the first conductor.
[0008] This method balances the load on the two limbs of the suspension string by adjusting the string length, thereby increasing the safety margin of the suspension string and improving the operational safety of overhead transmission lines without changing the string structure or increasing the tonnage of the suspension string.
[0009] Secondly, a figure-eight type suspension string length adjustment device for balanced load distribution is provided, comprising: Data acquisition module: used to acquire design parameter data of transmission lines, including suspension string hanging point spacing, vertical load of the first suspension string, vertical load of the second suspension string, original length of the suspension string, figure-eight angle of the suspension string, horizontal tension of the conductor between spans, vertical load of the first conductor, and vertical load of the second conductor. Calculation module: used to input the design parameter data of the transmission line into the pre-constructed formulas for the tangent value of the inclination angle of the inter-string conductor, the formula for the horizontal tension of the inter-string conductor, and the formula for the vertical load balance of the two limbs of the suspension string to calculate the string length adjustment length; Execution module: used to adjust the length of the suspension string according to the string length adjustment to distribute the load evenly.
[0010] Thirdly, a computer-readable storage medium is provided, on which a computer program / instruction is stored, which, when executed by a processor, implements the steps of the method for adjusting the length of the V-shaped suspension string for balanced load distribution as described in any of the first aspects.
[0011] Fourthly, a computer device / equipment / system is provided, comprising: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the method for adjusting the length of a figure-eight suspension string with balanced load distribution as described in any one of the first aspects.
[0012] Fifthly, a computer program product is provided, comprising a computer program / instructions that, when executed by a processor, implement the steps of the method for adjusting the length of a figure-eight suspension string for balanced load distribution as described in the first aspect.
[0013] Beneficial effects: The method, device, and system for adjusting the length of the V-shaped suspension string with balanced load distribution provided by this invention have the following advantages: By precisely calculating the string length adjustment difference, the load on the two legs of the suspension string is evenly distributed, thereby increasing the safety margin of the suspension string without changing its tonnage and type, and thus improving the operational safety of overhead transmission lines. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the method for adjusting the length of a figure-eight type suspension string to evenly distribute load according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the force and spatial dimensions of the suspension string according to an embodiment of the present invention. Detailed Implementation
[0015] The technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0016] The present invention will be further described below with reference to specific embodiments.
[0017] Example 1: This example provides a method for adjusting the length of a figure-eight type suspension string to evenly distribute the load. The process is as follows: Figure 1 As shown, it includes: Obtain transmission line design parameter data, including suspension string hanging point spacing, first suspension string vertical load (front suspension string vertical load), second suspension string vertical load (rear suspension string vertical load), original length of suspension string, suspension string figure-eight angle, horizontal tension of conductor between spans, first conductor vertical load (front conductor vertical load), second conductor vertical load (rear conductor vertical load). like Figure 2 As shown, formulas for the tangent of the inclination angle of the conductors between strings, the horizontal tension of the conductors between strings, and the vertical load balance formula for the two limbs of the suspension string are pre-constructed, thereby establishing a correlation for the above-mentioned transmission line design parameters; The transmission line design parameter data are input into the pre-constructed formulas for the tangent of the inter-string conductor inclination angle, the horizontal tension of the inter-string conductor, and the vertical load balance formula for the two limbs of the suspension string to calculate the string length adjustment length; Adjust the length of the suspension string according to the string length adjustment to evenly distribute the load.
[0018] The formula for the tangent of the inter-conductor inclination angle is: ; Where θ represents the inclination angle between the conductors. Indicates the length adjustment of the string. The figure-eight angle of the suspension string is represented by λ, e represents the spacing between the suspension string hanging points, and λ represents the slant angle of the suspension string. b This indicates the original length of the dangling string.
[0019] The formula for the horizontal tension of the inter-string conductors is: ; Among them, T e T represents the horizontal tension between conductors. o G represents the horizontal tension of the conductor between spans. b W represents the vertical load of the first suspension string. b θ represents the vertical load on the first conductor, and θ represents the inclination angle between the conductors in series. This indicates a hanging string with a figure-eight angle.
[0020] The formula for balancing the vertical loads on the two legs of the suspension string is: ; Among them, G a W represents the vertical load of the second suspension string. a T represents the vertical load on the second conductor. e G represents the horizontal tension between conductors, θ represents the inclination angle between conductors, and G represents the horizontal tension between conductors. b W represents the vertical load of the first suspension string. b This indicates the vertical load on the first conductor.
[0021] Example 2: This example provides a figure-eight type suspension string length adjustment device for balanced load distribution, including: Data acquisition module: used to acquire design parameter data of transmission lines, including suspension string hanging point spacing, vertical load of the first suspension string, vertical load of the second suspension string, original length of the suspension string, figure-eight angle of the suspension string, horizontal tension of the conductor between spans, vertical load of the first conductor, and vertical load of the second conductor. Calculation module: used to input the design parameter data of the transmission line into the pre-constructed formulas for the tangent value of the inclination angle of the inter-string conductor, the formula for the horizontal tension of the inter-string conductor, and the formula for the vertical load balance of the two limbs of the suspension string to calculate the string length adjustment length; Execution module: used to adjust the length of the suspension string according to the string length adjustment to distribute the load evenly.
[0022] Example 3: This example provides a computer-readable storage medium storing a computer program / instruction thereon, which, when executed by a processor, implements the steps of the method for adjusting the length of the figure-eight suspension string for balanced load distribution as described in any of the first aspects.
[0023] Example 4: This example provides a computer device / equipment / system, including: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the method for adjusting the length of a figure-eight suspension string with balanced load distribution as described in any one of the first aspects.
[0024] Example 5: This example provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the method for adjusting the length of a figure-eight suspension string with balanced load distribution as described in the first aspect.
[0025] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0026] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0027] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0028] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0029] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A method for adjusting the length of a figure-eight type suspension string with balanced load distribution, characterized in that, include: Obtain transmission line design parameter data, including suspension string hanging point spacing, first suspension string vertical load, second suspension string vertical load, original length of suspension string, suspension string figure-eight angle, horizontal tension of conductor between spans, first conductor vertical load, and second conductor vertical load. The transmission line design parameter data are input into the pre-constructed formulas for the tangent of the inter-string conductor inclination angle, the horizontal tension of the inter-string conductor, and the vertical load balance formula for the two limbs of the suspension string to calculate the string length adjustment length; Adjust the length of the suspension string according to the string length adjustment to evenly distribute the load.
2. The method for adjusting the length of a figure-eight type suspension string for balanced load distribution according to claim 1, characterized in that, The formula for the tangent of the inter-conductor inclination angle is: ； Where θ represents the inclination angle between the conductors. Indicates the length adjustment of the string. The figure-eight angle of the suspension string is represented by λ, e represents the spacing between the suspension string hanging points, and λ represents the slant angle of the suspension string. b This indicates the original length of the dangling string.
3. The method for adjusting the length of a figure-eight type suspension string for balanced load distribution according to claim 1, characterized in that, The formula for the horizontal tension of the inter-string conductors is: ； Among them, T e T represents the horizontal tension between conductors. o G represents the horizontal tension of the conductor between spans. b W represents the vertical load of the first suspension string. b θ represents the vertical load on the first conductor, and θ represents the inclination angle between the conductors in series. This indicates a hanging string with a figure-eight angle.
4. The method for adjusting the length of a figure-eight type suspension string for balanced load distribution according to claim 1, characterized in that, The formula for balancing the vertical loads on the two legs of the suspension string is: ； Among them, G a W represents the vertical load of the second suspension string. a T represents the vertical load on the second conductor. e G represents the horizontal tension between conductors, θ represents the inclination angle between conductors, and G represents the horizontal tension between conductors. b W represents the vertical load of the first suspension string. b This indicates the vertical load on the first conductor.
5. A figure-eight type suspension string length adjustment device for balanced load distribution, characterized in that, include: Data acquisition module: used to acquire design parameter data of transmission lines, including suspension string hanging point spacing, vertical load of the first suspension string, vertical load of the second suspension string, original length of the suspension string, figure-eight angle of the suspension string, horizontal tension of the conductor between spans, vertical load of the first conductor, and vertical load of the second conductor. Calculation module: used to input the design parameter data of the transmission line into the pre-constructed formulas for the tangent value of the inclination angle of the inter-string conductor, the formula for the horizontal tension of the inter-string conductor, and the formula for the vertical load balance of the two limbs of the suspension string to calculate the string length adjustment length; Execution module: used to adjust the length of the suspension string according to the string length adjustment to distribute the load evenly.
6. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the method for adjusting the length of the figure-eight suspension string for balanced load distribution as described in any one of claims 1 to 4.
7. A computer device / equipment / system, characterized in that, include: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the method for adjusting the length of the figure-eight suspension string with balanced load distribution as described in any one of claims 1 to 4.
8. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the method for adjusting the length of the figure-eight suspension string with balanced load distribution as described in any one of claims 1 to 4.