Dry type reactor epoxy resin insulating medium crack testing method

A dry-type reactor, epoxy resin technology, applied in the direction of testing dielectric strength, etc., can solve the problems of insulation breakdown, insulation cracking of dry-type reactor insulation materials, affecting the safe and reliable operation of the power system, and achieve strong reliability. , High test efficiency, the effect of avoiding breakdown accidents

Inactive Publication Date: 2018-05-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology

However, during long-term operation, especially under severe weather conditions, the insulating material of dry-type reactors is prone to insulation cracking, resulting in a large number of wate

Method used

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  • Dry type reactor epoxy resin insulating medium crack testing method
  • Dry type reactor epoxy resin insulating medium crack testing method
  • Dry type reactor epoxy resin insulating medium crack testing method

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Embodiment Construction

[0040] A dry-type reactor epoxy resin insulation medium crack detection method, the method is an online detection method, which includes the establishment of an image threshold information database and dry-type reactor epoxy resin insulation medium crack detection two steps:

[0041] a. Establish an image threshold information database, the image threshold information database includes discharge image threshold data information and temperature image threshold data information, and the method for obtaining the discharge image threshold data information and temperature image threshold data information includes the following steps:

[0042] a) Collecting images of the cracked epoxy resin insulation medium under different temperature, humidity and light intensities by means of an ultraviolet imager and an infrared imager, respectively, to obtain ultraviolet images and infrared images under different temperature, humidity and light intensities;

[0043]b) Extract the pixels of the e...

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Abstract

The invention discloses a dry type reactor epoxy resin insulating medium crack testing method which is an online testing method. The method comprises two main steps, namely establishing an image threshold information database and performing dry type reactor epoxy resin insulating medium crack testing, wherein a, the step of establishing the image threshold information database comprises convertingacquired discharging threshold source data information and temperature threshold source data information to discharging image threshold data information and temperature image threshold data information; and b, the step of performing dry type reactor epoxy resin insulating medium crack testing comprises the following procedures of image information sampling; determining a contour superposing partin the image as a dry type reactor epoxy resin insulating medium crack position, and determining no crack of the dry type reactor epoxy resin insulating medium when no contour superposing part is detected between the discharging image information and high-temperature image information. The dry type reactor epoxy resin insulating medium crack testing method has advantages of high testing efficiency, high reliability, high suitability for engineering researching and scientific researching, and relatively high application value.

Description

technical field [0001] The invention relates to the technical field of crack detection of epoxy resin insulating medium. Background technique [0002] Polymeric organic polymer materials such as epoxy resin have gradually replaced natural insulating media and become important electrical insulating materials due to their good electrical insulation properties, good plasticity, and convenient processing. Epoxy resin has been widely used in the casting of insulating parts such as motors, electrical appliances, electronic assemblies, and kilovolt high-voltage transmission transformers, especially in current transformers, voltage transformers, dry-type transformers, GIS, and cable junction boxes. application. [0003] With the continuous increase of the transmission capacity of the power grid and the gradual increase of the voltage level, the requirements for the safety and reliability of various power equipment operations are getting higher and higher, and dry-type reactors are ...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 王永强刘晗关杰王云佳丁仁杰崔士刚李广凯段力勇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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