Oil seepage daytime detection method for power equipment

A technology of electric power equipment and detection method, which is applied in measurement devices, color/spectral characteristic measurement, material analysis by optical means, etc., can solve the problems of daytime oil seepage detection technology, etc. Effect

Active Publication Date: 2019-01-18
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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AI Technical Summary

Problems solved by technology

At night, the fluorescent effect of ultraviolet light can be used for oil seepage

Method used

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  • Oil seepage daytime detection method for power equipment

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Embodiment Construction

[0022] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, the present invention provides a daytime detection method for oil leakage of electric power equipment, comprising the following steps,

[0024] Step S1: Given an ultraviolet light source capable of stably and continuously emitting ultraviolet light with a wavelength ranging from 330nm to 400nm, provide a set of optical path switching devices that can switch the output path of the light source between the A light path and the B light path;

[0025] Step S2: switch to the light path A, the ultraviolet light source passes through the band-pass filter with a wavelength of 335nm to 345nm, and then adjusts the brightness to M through the light intensity adjustment filter A;

[0026] Step S3: irradiate the object to be measured with the ultraviolet light emitted from the light path A, and install a filter in fr...

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Abstract

The invention relates to an oil seepage daytime detection method for power equipment. An ultraviolet light source of ultraviolet light is given, and a light path conversion device is provided, so thata light source output path can be switched between a light path A and a light path B; the light source output path is switched to the light path A, the ultraviolet light source passes through a band-pass light filter with the transmission wavelength ranging from 335nm to 345nm, and then the light intensity is adjusted to the brightness M through a light intensity adjusting light filter A; ultraviolet rays emitted by the light path A irradiate a to-be-detected object, a light filter is additionally arranged in the front of a lens of an ultraviolet camera to filter visible light with the wavelength larger than 390nm, and an ultraviolet image A of the to-be-detected object is shot; likewise, the light source output path is switched to the light path B to obtain an ultraviolet image B; and agrayscale image of the ultraviolet image A is subtracted from a grayscale image of the ultraviolet image B, histogram equalization is carried out to increase a contrast ratio, an image D is obtained,and whether the oil seepage of the power equipment exists or not can be judged through the image D. According to the method, the oil seepage detection can be rapidly and accurately carried out in daytime.

Description

technical field [0001] The invention belongs to the field of live detection of electric power systems, and in particular relates to a daytime detection method for oil seepage of electric power equipment. Background technique [0002] Transformers, capacitors, voltage transformers, and current transformers in power equipment all use transformer oil as the insulating medium. Oil leakage will occur when the sealing rubber pad is aging, the outside temperature and humidity change sharply, and there is a discharge fault point inside the equipment to generate gas. If the leaking oil is not detected in time, it will cause the appearance of the equipment to be dirty and the insulation will be reduced. If there is a discharge fault inside the oil-filled equipment, if it is not dealt with in time, it will lead to serious accidents. [0003] At present, the power system mainly relies on the observation of oil seepage with the naked eye, and lacks effective technical means. At night, ...

Claims

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Application Information

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IPC IPC(8): G01N21/33G01N21/3577
CPCG01N21/33G01N21/3577
Inventor 黄志东蔡梦洁陈闽江
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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