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System and method for detecting gas in transformer oil with high anti-interference capability

A gas detection system, transformer oil technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problem of target component gas analysis interference, etc., to achieve the effect of weakening the influence of interference and reliable accuracy

Pending Publication Date: 2022-07-05
XI AN JIAOTONG UNIV +1
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Problems solved by technology

[0004] According to the similar miscibility characteristics, in addition to the target gas methane, ethane, ethylene, acetylene, carbon monoxide and carbon dioxide in the transformer oil, part of the C3 gas (propane, propylene and propyne) is also separated from the oil, and then the target Interference in the analysis of component gases

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  • System and method for detecting gas in transformer oil with high anti-interference capability

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[0083] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0084] It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate ...

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Abstract

The invention discloses a system and a method for detecting gas in transformer oil with high anti-interference capability, and belongs to the field of online detection of electrical equipment. The method solves the problem that C3 gas (propane, propylene and propyne) in mixed gas interferes with a characteristic gas detection result when the gas in the transformer oil is detected by utilizing the photoacoustic spectrometry, and comprises the following steps: firstly, detecting the concentration of each characteristic gas in the mixed gas by utilizing the photoacoustic spectrometry to obtain a gas detection result y interfered by the C3 gas; and calculating the concentration a of C3 gas in the mixed gas in the oil by using a spectral analysis method. And finally, obtaining the interference influence degree coefficient k of the C3 gas on the characteristic gas in the use environment by using the standard mixed gas. And finally, obtaining a detection result of the characteristic gas in the oil after the C3 gas interference is eliminated. The device has high interference resistance to C3 gas, and the accuracy of the detection result of the gas in the oil by the photoacoustic spectrometry is improved.

Description

technical field [0001] The invention belongs to the field of on-line detection of electrical equipment, in particular to a gas detection system and method in transformer oil with high anti-interference ability. Background technique [0002] Transformer is a vital electrical equipment in the power system, once it fails, it will cause huge losses. It is very important to detect the operating status of the transformer and discover the potential faults and abnormal operating status of the transformer in time to ensure the normal operation of the transformer and the power grid. [0003] At present, the vacuum degassing method is generally used in the power system to separate the dissolved gas in the transformer oil from the insulating oil, and then the gas chromatographic method is used to detect the dissolved gas in the transformer oil. The detection of this gas chromatography method leads to inaccurate analysis results because the chromatographic column is easily contaminated,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17
CPCG01N21/1702G01N2021/1704G01N2201/129
Inventor 汤晓君黄连鹏金祎顾渊博
Owner XI AN JIAOTONG UNIV
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