Method for manufacturing composite conductive wire and heating monofilament of composite conductive wire

Abstract

The invention provides a method for manufacturing a composite conductive wire and a heating monofilament of the composite conductive wire. The composite conductive wire consists of a plurality of monofilaments which are stranded; more than one monofilament is the heating monofilament; the heating monofilament is at least partially made of ferromagnetic material with low Curie point; and the heating monofilament can produce heat when the surface temperature of the conductive wire is lower than the Curie point temperature so as to maintain the surface temperature of the conductive wire over a freezing temperature. The composite conductive wire of the invention not only can effectively prevent icing on the surface of the conductive wire on a power transmission line, but also does not produce a complex mounting process, and hardly increases the load of the conductive wire.

Description

Technical field [0001] The invention relates to a wire of a power transmission line, in particular to a composite wire and a method for manufacturing a heating monofilament of the composite wire. Background technique [0002] The long-term operating temperature of existing conventional ACSR conductors is 70°C, but in winter, the long-term operating temperature of conventional ACSR conductors will be lower. The surface temperature of the conductors is generally below 0°C in winter rain and snow, especially When the ice and snow disaster comes, the wires on the outdoor transmission circuit will be iced because the surface temperature is lower than 0℃. After the icing on the wire, it will increase the load of the wire and cause damage to the transmission circuit. For example, at the beginning of 2008, the freezing disasters in most parts of southern and northwestern China caused severe damage to the local power grid and caused widespread power outages. [0003] In order to solve the...

AI Technical Summary

Problems solved by technology

[0011] 1. Since the anti-icing devices made of ferromagnetic materials generally need to be relatively slender, for example, the diameter of the magnetic heating wire needs to be 1.5-3mm, and the structure is complex, and the outer layer is covered with a thinner coating, which is easy to break or deform during installation. Conducive to aerial work on overhead lines

Moreover, the installation mainly relies on manual operation. In mountainous terrain with complex terrain, manual assembly of anti-icing devices requires a lot of manpower, material and financial resources, and the assembly efficiency is relatively low.

At the same time, aerial work in the field is very dangerous

[0012] 2. After the ferromagnetic anti-icing device is installed on the wire, it will increase the load of the wire itself, which will bring adverse effects to the wire

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