Method and device for adjusting string length of splayed suspension string with load balanced distribution

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.

CN122452116APending Publication Date: 2026-07-24CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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Patent Information

Application Number
CN202610500097.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-16
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

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.

Method used

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.

Benefits of technology

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.

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Abstract

The invention discloses a method and device for adjusting the string length of a splayed suspension string with load balanced distribution, and the method comprises the steps: obtaining the design parameter data of a power transmission line, comprising suspension string hanging point spacing, a first suspension string vertical load, a second suspension string vertical load, suspension string original length, a suspension string splayed deflection angle, inter-gear wire horizontal tension, a first wire vertical load and a second wire vertical load; inputting the power transmission line design parameter data into a pre-constructed inter-string wire inclination angle tangent value formula, an inter-string wire horizontal tension formula and a suspension string two-limb vertical load balance formula, and calculating a string length adjusting length; and adjusting the string length of the suspension string according to the string length adjusting length so as to uniformly distribute the load. According to the method, loads of two limbs of the suspension string are balanced by adjusting the string length of the suspension string, the safety margin of the suspension string is improved, then the operation safety of the overhead transmission line is improved, and the string type structure does not need to be changed or the tonnage of the suspension string does not need to be increased.
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