Judgment method of aging degree of composite insulator

A technology of composite insulators and aging degree, applied in the direction of strength characteristics, using stable tension/pressure test material strength, short circuit test, etc., can solve the problems of expensive equipment and high cost, and achieve low cost, high accuracy, good aging effect

Active Publication Date: 2022-03-29
STATE GRID HUNAN ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, in order to solve the technical problem of expensive equipment and high cost in measuring the aging degree of composite insulators in the prior art, a simple and efficient method for judging the aging degree of composite insulators is proposed.

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  • Judgment method of aging degree of composite insulator
  • Judgment method of aging degree of composite insulator
  • Judgment method of aging degree of composite insulator

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Embodiment 1

[0039] see figure 1 , a method for judging the aging degree of a composite insulator, the method comprising the following steps:

[0040] S1. Reference figure 2 The schematic diagram of the hydrophobic angle measurement of , the experimental steps are: ① Cut the composite insulator material into 5cm*5cm*2cm slices. ② Place the test sample in NaCl solution doped with 30% mass, and boil the solution for 100h. ③Wipe the sample clean and dry it, place the water drop on the surface of the material, slice and tilt the composite insulator, measure the angle Ω between the inclined surface and the horizontal plane when the water drop just does not slip, and compare the material sample with the unaged Composite insulator tilt angle Ω N In contrast, the oblique angle aging factor α=Ω / Ω is obtained N ;

[0041] Such as figure 2 The diagram of the applied voltage and leakage current of the composite insulator is shown, and the experimental steps are as follows: ① The test transform...

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Abstract

The invention relates to a method for judging the aging degree of a composite insulator. The judging method includes: S1, performing a hydrophobic performance test, a leakage current test, and a tensile test on the composite insulator to be tested; S2, according to the hydrophobicity of the composite insulator to be tested, The water performance test results, the leakage current test results and the tensile test results determine the comprehensive aging factor of the composite insulator to be tested; S3. Determine the aging degree of the composite insulator to be tested according to the comprehensive aging factor. The present invention has the following beneficial effects: 1) The present invention combines the hydrophobic performance test, the leakage current and the tensile test to jointly detect the aging degree of the composite insulator. Compared with the hydrophobic performance test, the leakage current and the tensile test, the present invention can be more It can well reflect the aging state of the composite insulator, and has high accuracy; 2) Compared with the judgment methods of scanning electron microscope and infrared spectrum, the judgment method of the present invention is more simple and convenient, and has low cost.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a method for judging the aging degree of composite insulators. Background technique [0002] The average service life of composite insulators is much shorter than traditional porcelain insulators and glass insulators. Its composite insulator materials will undergo insulation aging in the complex climate environment of nature, resulting in degradation of insulation performance, which threatens the normal and stable operation of the power system. [0003] The aging degree of existing composite insulators is mainly determined by measuring the thickness of the powdered layer on the surface of the composite insulator by scanning electron microscopy, or by analyzing the composition of the compound by infrared spectroscopy. However, the methods of electron microscopy and infrared spectroscopy require expensive instruments and equipment, and the cost of use is high. Contents of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00G01N3/08G01R31/52
CPCG01N13/00G01N3/08G01N2203/0017
Inventor 陆佳政谢鹏康胡建平方针蒋正龙王博闻彭永晶
Owner STATE GRID HUNAN ELECTRIC POWER
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