Active infrared thermal image detecting device and method for internal defects of composite insulator

A technology for composite insulators and internal defects, applied in measuring devices, radiation pyrometry, measuring electricity, etc., can solve problems such as low sensitivity, high requirements for detection conditions, and destructiveness, and achieve the effect of solving low sensitivity
CN108693453APending Publication Date: 2018-10-23YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Publication Date
2018-10-23

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Abstract

The invention discloses an active infrared thermal image detecting device and method for internal defects of a composite insulator. The active infrared thermal image detecting device is composed of amodulating optical radiation and thermal excitation loading device, an infrared thermal image collecting device, and a control and data processing and analyzing device. The modulating optical radiation and thermal excitation loading device is controlled to carry out controllable thermal excitation on a composite insulator, so that dynamic temperature field data are formed on the surface of the composite insulator; the infrared thermal image collecting device is controlled to collect dynamic temperature field data; and the control and data processing and analyzing device is used for identifyingand analyzing the dynamic temperature field data to obtain specific information of an internal defect of the composite insulator. Therefore, with the active infrared thermal image detecting device and method, problems of low sensitivity, high complexity, high time consumption, high destructiveness, and high detection condition requirement of the existing detection method of the composite insulator defect can be solved.
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Description

technical field

[0001] The invention relates to the field of electric equipment detection, in particular to an active infrared thermal image detection device and method for internal defects of a composite insulator. Background technique

[0002] Since the application of composite insulators in my country in the 1970s, it has been more and more widely used due to its advantages of small size, light weight, high mechanical strength, strong anti-fouling flashover ability, excellent hydrophobicity and hydrophobic migration. . However, when the composite insulator has defects such as debonding of the sheath and the mandrel, pores or faults inside the sheath due to manufacturing processes, field operation aging, etc., the composite insulator will experience interface breakdown, flashover, silicone rubber aging, and mechanical strength reduction. , brittle mandrel and other problems, these hidden defects will pose a great threat to the safe operation of the power grid. The structu...

Claims

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