Method for rapidly judging performance of hard-drawn aluminum wire for overhead transmission lines

Abstract

The invention belongs to the technical field of power equipment detection, and specifically relates to a method for rapidly judging the performance of a hard-drawn aluminum wire for overhead transmission lines. The method comprises the following steps: S1, carrying out spectral detection on the hard-drawn aluminum wire for overhead transmission lines, wherein the detection indexes comprise aluminum content, silicon content and iron content; S2, calculating the iron-silicon element content proportion according to a spectrum detection result; and S3, evaluating the performance of the hard-drawnaluminum wire for overhead transmission lines according to the spectrum detection result and the iron-silicon element content proportion, wherein the evaluation result is qualified or unqualified. According to the method, the key indexes, such as the aluminum content, the silicon content, the iron content and the iron-silicon element content proportion, for judging the performance of the hard-drawn aluminum wire for overhead transmission lines are determined, and the problem of difficulty in judging the performance of the hard-drawn aluminum wire for overhead transmission lines on site is solved. By adopting the method provided by the invention, the performance of a hard-drawn aluminum wire for overhead transmission lines can be quickly judged, the site quality acceptance is carried out, and the working efficiency is provided.

Description

technical field [0001] The invention belongs to the technical field of power equipment detection, and in particular relates to a method for quickly evaluating the performance of duralumin wires for overhead transmission lines. Background technique [0002] Transmission wire is the carrier of power transmission and an important part of ensuring the safe operation of the power system. Its performance and quality determine the safe and stable operation of the power grid. According to the requirements of GB / T17048-2009 "Duralumin Wire for Overhead Stranded Wire" and GB / T1179-2008 "Round Wire Concentric Strand Overhead", the aluminum purity of the duralumin wire used for overhead wire reaches 99.5%, and the tensile strength is based on the duralumin The nominal diameter of the wire has different requirements, the minimum tensile strength is 160MPa, and the resistivity is not greater than 28.264 nΩ·m at 20°C. [0003] Research results at home and abroad show that the main impurit...

AI Technical Summary

Problems solved by technology

[0008] To sum up, the current standards and data do not have a clear value for the impurity content, which leads to the fact that the aluminum purity of the duralumin wire for aerial use reaches 99.5% and above, but its tensile strength is still lower than the standard requirement, and If the resistivity is not up to standard, it is attributed to the fact that the content of impurity elements in the aluminum wire affects its performance

In addition, the standard requires testing the tensile strength index of the item, which cannot be carried out on site, and needs to be sent to the laboratory for testing. The testing cycle is long and the cost is high

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