Drag reduced conductor and method for forming spline curves in drag reduced conductor

Abstract

The invention discloses a low wind pressure wire and a method for forming a spline curve in the low wind pressure wire. The outer conductor layer and the aluminum wire layer arranged outside the outer conductor layer, the surface structure of the aluminum wire layer is a spline curve with the same local structure form in multiple sections, and the shape of each spline curve is determined by the highest points at both ends of the spline curve. It is determined by the distance between the two control points and the point on the bisector of the angle of the two control points to the outer diameter of the wire. The invention changes the structure of the outermost aluminum wire of the wire, and changes the traditional round wire and fan-shaped structure into a curved structure, so that the surface of the wire has a certain roughness, thereby reducing the wind pressure; the structure of the wire is single, which not only makes the wire The mold produced is single, and there will be no confusion during stranding production, which is convenient for processing and production.

Description

Technical field: [0001] The invention relates to the technical field of electric power transmission, in particular to a low wind pressure wire and a method for forming a spline curve in the low wind pressure wire. Background technique: [0002] The wind pressure on the wires in the overhead transmission line accounts for about 50% to 70% of the wind pressure on the entire transmission line. In addition to its own strength to resist the effect of wind load, the support tower of the wire must also bear the combined effect of the wind load transmitted by the wire and the wind load received by the tower itself. [0003] The wind pressure of the conductor has a significant impact on the strength design of the tower foundation and the tower body. Reducing the wind pressure of the conductor is of great significance for reducing the cost of the line and improving the safety of the line operation. [0004] For a long time, line workers in relevant countries have always paid attentio...

AI Technical Summary

Problems solved by technology

The outermost layer of the stranded wire is three structural types of molded wires. When producing a single wire, it is necessary to design the drawing dies corresponding to the three types of wires, and the production cost is relatively high.

[0010] 2. The...

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