Low-sag soft aluminum wire and optical fiber composite overhead phase line

Abstract

The invention discloses a low-sag soft aluminum wire and optical fiber composite overhead phase line. The low-sag soft aluminum wire and optical fiber composite overhead phase line comprises a carbon fiber composite core, wherein an inner core layer is arranged outside the carbon fiber composite core, at least one soft aluminum wire layer is arranged outside the inner core layer, a plurality of fan-shaped aluminum alloy wires and an optical fiber unit are coaxially intertwisted to form the inner core layer, the optical fiber unit comprises a plurality of optical fibers, and a stainless steel sleeve is arranged outside the optical fibers. Compared with an ordinary optical fiber composite overhead phase line, the low-sag soft aluminum wire and optical fiber composite overhead phase line has the advantages that on one hand, under the condition that the outer diameters are the same, the aluminum sectional area is increased, direct-current resistance is reduced, alternating-current resistance is small, the operating temperature is raised, the current-carrying capacity is greatly improved, the strength of wires is not obviously influenced, on the other hand, under the condition that the section of the low-sag soft aluminum wire and optical fiber composite overhead phase line is the same as the section of the ordinary optical fiber composite overhead phase line, the outer diameter of the low-sag soft aluminum wire and optical fiber composite overhead phase line can be reduced by 10%, the surface is smooth, air pressure load in the operating process is small, the surface is not prone to freezing, and the probability of shaking can be lowered.

Description

technical field [0001] The present invention relates to an overhead wire of a power transmission line, in particular to a low-sag annealed aluminum type wire fiber optic composite overhead phase wire. [0002] Background technique [0003] The optical fiber composite overhead phase line of the existing transmission line is generally made of a single steel wire or a steel strand as a central reinforcement, and the twisted layer is made of a stainless steel tube as a casing with an optical fiber unit twisted with a round aluminum metal wire. This kind of optical fiber composite overhead phase line has large sag, large cross-sectional area, large DC resistance, low carrying capacity, large wind pressure load, easy to freeze on the surface, high probability of galloping, general self-damping performance and low corrosion resistance, thus The phase wire is easily damaged. Contents of the invention [0004] The invention provides a low-sag soft aluminum type line optical fiber...

AI Technical Summary

Problems solved by technology

[0003] The optical fiber composite overhead phase line of the existing transmission line is generally made of a single steel wire or a steel strand as a central reinforcement, and the twisted layer is made of a stainless steel tube as a casing with an optical fiber unit twisted with a round aluminum metal wire. This kind of optical fiber composite overhead phase line has large sag, large cross-sectional area, large DC resistance, low carrying capacity, large wind pressure load, easy to freeze on the surface, high probability of galloping, general self-damping performance and low corrosion resistance, thus lead to easy damage to the phase wire

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