Device for monitoring gas content of transformer oil online based on spectral absorption method

A spectral absorption, transformer oil technology, applied in measurement devices, color/spectral characteristic measurement, instruments, etc., can solve the problems of narrow measurement environment, single measurement gas, long measurement time, etc., to achieve wide measurement environment range and measurement accuracy High, short measurement time effect

Pending Publication Date: 2018-07-06
HUNAN WULING POWER TECH CO LTD
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Problems solved by technology

[0005] The invention provides an on-line monitoring device for gas content in transformer oil based on the spectral absorption method, which solves the problem of low measurement accuracy, long measurement time, complicated device and difficulty in measuring gas caused by the cross inte

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  • Device for monitoring gas content of transformer oil online based on spectral absorption method
  • Device for monitoring gas content of transformer oil online based on spectral absorption method
  • Device for monitoring gas content of transformer oil online based on spectral absorption method

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Embodiment Construction

[0033] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0034] The on-line monitoring device for gas content in transformer oil based on spectral absorption method of the present invention includes a dynamic headspace degassing module with negative pressure and constant temperature and a multi-component gas concentration detection module based on TDLAS; wherein:

[0035] like figure 1As shown, the negative pressure and constant temperature dynamic headspace degassing module of the present invention includes a degassing bottle 115, a gas circuit part and an oil circuit part connected with the degassing bottle 115; an oil-gas mixer 112 is also included; the gas circuit The part includes a gas pipeline connected between the top gas outlet of the degassing bottle 115 and the gas inlet of the oil-gas mixer 112, and an oil-gas filter device 108, a pressure sensor 107, a gas Absorption pool 101, air pump 102...

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Abstract

The invention relates to a device for monitoring the gas content of transformer oil online based on a spectral absorption method. In the device, a negative-pressure constant-temperature dynamic headspace degassing module comprises a degassing bottle, and a gas path part and an oil path part which are connected with the degassing bottle, and further comprises an oil and gas mixer; a TDLAS-based multi-component gas concentration detection module comprises a signal generator, a lock-in amplifier, a laser driver, a laser selector, a laser base, a laser, a fiber coupler, a collimator, a focuser, adetector, a data acquisition card, a control module, a flow meter and a gas pump. The device solves the problems of low measurement accuracy and long measurement time, which are caused by cross interference of background gas on measured gas of a current gas measuring device, and device complication, measuring gas singleness and a narrow measurement environment range; the device has the advantagesof high measurement accuracy, short measurement time, device simpleness, capability of measuring multiple gases and a wide measurement environment range.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of transformer oil, in particular to an on-line monitoring device for gas content in transformer oil based on spectral absorption method. Background technique [0002] Transformers are not only the most expensive and important equipment in power facilities, but transformer failure or aging can cause very serious grid accidents. Therefore, real-time monitoring of the operating status and health status of transformers is helpful to improve the safety and stability of power facilities. Since there are many types of characteristic gases produced when a transformer fails, the monitoring of a single component gas can only be used for preliminary analysis of transformer faults. By monitoring the multi-component characteristic gas dissolved in the transformer oil, the detailed information of the transformer fault can be obtained, so as to judge the type and cause of the transformer fault more ...

Claims

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Application Information

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IPC IPC(8): G01N21/39G01N21/01
CPCG01N21/01G01N21/39
Inventor 李钊张启蕊
Owner HUNAN WULING POWER TECH CO LTD
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