Device for detecting gas in transformer oil
A technology for gas detection and transformer oil, applied in the direction of material excitation analysis, Raman scattering, etc., to achieve the effect of increasing laser power, increasing Raman scattering signal intensity, and high-sensitivity detection
Pending Publication Date: 2020-06-05
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology
[0005] In order to solve the problems of the current traditional detection method of dissolved gas in transformer oil, the present invention proposes a gas detection device in transformer oil
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[0066] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0067] figure 1 Shown is a gas detection device in transformer oil based on combined acoustic-electric modulation frequency enhanced Raman spectroscopy. Such as figure 1 As shown, the device includes a laser unit 1 , an acoustic-electric joint modulation unit 2 , a gas chamber unit 3 , a PDH frequency locking unit 4 , and a spectrum acquisition unit ...
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Abstract
The invention discloses a device for detecting gas in transformer oil. The device comprises a laser unit, an acoustoelectric joint modulation unit, a gas chamber unit, a PDH frequency locking unit anda spectrum acquisition unit. The laser unit is used for providing a light source required by detection; the acoustoelectric joint modulation unit is used for modulating the laser generated by the laser unit so as to realize frequency locking of the resonant cavity; the gas chamber unit is used for placing the FP resonant cavity unit and is filled with gas to be detected, and the FP resonant cavity unit is used for improving the intensity of Raman scattering light and realizing high-sensitivity Raman detection of dissolved gas in transformer oil; the PDH frequency locking unit is used for adjusting the cavity length of the FP resonant cavity so as to realize frequency locking of the resonant cavity; and the spectrum acquisition unit is used for acquiring and detecting Raman scattering light. In-situ detection of the fault gas in the transformer oil can be realized, Raman scattering light is enhanced through acoustoelectric joint modulation frequency, Raman scattering intensity of tracegas is improved, and high-sensitivity detection of the dissolved gas in the transformer oil is realized.
Description
technical field [0001] The present application relates to the technical field of gas detection, in particular to a gas detection device in transformer oil. Background technique [0002] The power transformer undertakes the tasks of voltage conversion and power distribution in the power system. It is the most important pivotal equipment in the power system, and its operation reliability is related to the safety and stability of the power system. Once the power transformer fails during operation, it will not only lead to damage or even scrapping of the power transformer, but also may cause large-scale power outages, resulting in huge economic losses. Among them, during the failure and aging process of the oil-immersed power transformer, its oil-paper insulation system will crack and produce various characteristic gases that reflect the type of failure and the degree of aging (such as H 2 , CO, CO 2 、CH 4 、C 2 h 6 、C 2 h 4 、C 2 h 2 etc.), these characteristic gases are...
Claims
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IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 钱国超彭庆军王建新陈伟根王品一马仪程志万邹德旭王山洪志湖万福颜冰代维菊
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST