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

A transmission line and wire surface technology, applied in the field of power transmission, can solve the problems of weather influence, large dispersion of detection results, and difficulty in evaluating the electromagnetic environment of transmission lines, and achieve the effect of improving efficiency and accuracy

Inactive Publication Date: 2012-10-03
JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID +1
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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

Method used

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

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0038] Such as figure 1 The conductors of the transmission lines shown will gradually age after running for a certain period of time. The aged conductors are as follows: figure 2 The surface shown is dark in color and its cross-section is image 3 As shown, it includes an aluminum strand 10 and a surface layer 20 wrapped around the aluminum strand 10 .

[0039] The aging degree of wires can generally be divided into mild aging, moderate aging and severe aging. The surface condition of lightly aged conductors is equivalent to that of conductors that have been operated for less than 10 years under normal operating conditions; the surface condition of moderately aged conductors is comparable to that of conductors that have been operated for 10 to 20 years under normal operating conditions The surface condition of the severely aged wire i...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 蔡德华刘平原汤振鹏王黎明卞星明陈澜陈福才曾伟灵范亚洲陈剑平
Owner JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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