Method and system for evaluating surface state of wire of power transmission line

Abstract

The invention relates to a method for evaluating the surface state of a wire of a power transmission line. The method comprises the following steps of: detecting the surface roughness of the wire; and determining the aging degree of the wire according to the surface roughness of the wire. Compared with the prior art, the method has the advantages that the aging degree of the wire is determined by detecting the surface roughness of the wire, the evaluation efficiency and accuracy of the surface face of the wire are greatly improved, and a convenient, efficient and accurate way is provided for evaluation of the operating situation of the wire and management of the service life of the line in long-term operation. The invention also relates to a system for evaluating the surface state of the wire of the power transmission line.

Description

technical field [0001] The invention relates to the field of power transmission, and more specifically, to a method and system for evaluating the surface state of a transmission line wire. Background technique [0002] At the beginning of the design of transmission line conductors, design limits will be proposed according to mechanical and electrical requirements. In recent years, the construction of ultra-high voltage and ultra-high voltage in China has been accelerating, and the electromagnetic environment problems caused by transmission line corona have attracted more and more attention. The research conclusions at home and abroad agree that the surface condition of the wire has a great influence on the electromagnetic environment of the line; and because the industrial development in China is later than that in foreign countries, the pollution problem is more serious than that in Europe and the United States, and the aging of the wire is more serious, resulting in the wir...

AI Technical Summary

Problems solved by technology

This method often requires detection near the wires of the transmission corridor, and requires the use of professional audible noise analyzers and radio interference receivers, which consumes a lot of manpower and material resources.

[0004] At the same time, because the detection is carried out in an open-air environment, the detection process is seriously affected by the weather, such as background noise and background radio interference, temperature and humidity near the wire, rain and wind, and line dancing, etc., resulting in scattered detection results. Due to the above reasons, it is difficult to evaluate the electromagnetic environment of transmission lines and the surface condition of conductors objectively and without interference even if the method of taking the average value of multiple tests is adopted

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