Visual detection method for assembling defects in metal oxide arrester for electric power

A technology of internal assembly and detection methods, applied in geophysical measurement, instruments, measuring devices, etc., can solve problems such as difficult, difficult to use, and impossible to detect

Active Publication Date: 2011-09-07
云南电力试验研究院(集团)有限公司
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Problems solved by technology

However, due to various practical problems such as the large amount of lightning arresters operating in the system, the rapid economic development and the lack of opportunities for equipment power outages, this type of detection meth

Method used

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  • Visual detection method for assembling defects in metal oxide arrester for electric power
  • Visual detection method for assembling defects in metal oxide arrester for electric power
  • Visual detection method for assembling defects in metal oxide arrester for electric power

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Embodiment Construction

[0017] A method for visually detecting internal assembly defects of a metal oxide arrester for electric power, the method of the present invention is as follows:

[0018] 1) Using electrical measurement and waveform observation as the main method, supplemented by X-ray fluoroscopy, can realize the rapid diagnosis of internal assembly defects of metal oxide arresters for electric power;

[0019] 2) The voltage waveform is monitored by an ordinary oscilloscope at both ends of the discharge counter of the charged arrester. If the voltage waveform contains high-frequency and high-amplitude clutter, it can indicate that there are metallic suspended particle defects inside the arrester;

[0020] 3) By means of X-ray perspective irradiation, focusing on the vicinity of the bottom of the single-section arrester, the visual display of the internal structure of the arrester can be realized, and then the defects existing inside the arrester can be directly determined.

[0021] See figur...

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Abstract

The invention relates to a visual detection method for the assembling defects in a metal oxide arrester for electric power. In the visual detection method provided by the invention, a means that the electric measurement and the waveform observation are taken to be principal and the X-ray perspective radiation is taken to be auxiliary is adopted to realize the rapid diagnosis of the assembling defects in the metal oxide arrester for the electric power; the two ends of a discharge counter which is provided with an electric arrester are used for monitoring the voltage waveform through a common oscilloscope, and if the voltage waveform contains high-frequency and high-amplitude noise waves, the metallic suspended particle defect exists in the arrester; and by virtue of an X-ray perspective radiation means, the main point is that the visual expression of the structure feature in the arrester can be realized near the bottom of a single-section arrester, thereby directly determining that the defect exists in the arrester. The visual detection method provided by the invention mainly integrates an electric detection means and an X-ray perspective radiation technique to realize the rapid positioning and determination of the assembling defects in the metal oxide arrester for the electric power, and has the obvious advantages of concise structure, high efficiency, defect shape visualization and the like.

Description

technical field [0001] The invention belongs to the category of detection methods for assembly defects of electrical equipment in electric power systems, and is particularly suitable for the technical field of detection of internal assembly defects of metal oxide arresters during live operation. Background technique [0002] Surge arresters are used in power systems mainly to suppress lightning or operating overvoltage to control the stability of power system voltage. With the development of technology, the application range of metal oxide arresters has gradually expanded and finally become the mainstream type of arrester selection in power systems. Generally, this type of arrester is assembled by stacking metal oxide valve plates. For arresters with a voltage level of 110kV and above, parallel capacitors will be installed for voltage equalization; further, in order to suppress the occurrence of high-voltage partial discharge, conventional insulating porcelain bottles Or th...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01V5/00
Inventor 魏杰黄星赵现平王达达于虹王科张恭源
Owner 云南电力试验研究院(集团)有限公司
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