Dissolved gas analyzer of electric power transformer oil based on Raman technology

A technology of dissolved gas in oil and power transformer, which is applied in the direction of color/spectral characteristic measurement and scattering characteristic measurement. It can solve the problems of low detection sensitivity, long detection time, unstable work, etc., and achieve flexible light source selection and improved accuracy. , the effect of compact structure

Active Publication Date: 2005-07-27
上海众毅工业控制技术有限公司
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Problems solved by technology

Its disadvantages are: 1. Due to the inherent defects of chromatography, the detection sensitivity is low
Second, due to the use of molecular membranes to separate gases, it takes a long time and the operation is complicated, so each detection takes a long time
Three, the system is greatly affected by the external environment, and the work is unstable

Method used

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  • Dissolved gas analyzer of electric power transformer oil based on Raman technology
  • Dissolved gas analyzer of electric power transformer oil based on Raman technology
  • Dissolved gas analyzer of electric power transformer oil based on Raman technology

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Embodiment Construction

[0018] Such as figure 1 As shown, the present invention includes: a laser light source 1 , a sample pool and its optical system 2 , a multi-channel spectrometer 3 , a gas compression device 4 and a computer communication part 5 . The connection relationship is as follows: the sample cell, the optical system 2 and the gas compression device 4 are connected through pipelines, the spectrometer 3 and the computer communication part 5 are connected through a communication line for data exchange, and the sample cell, its optical system 2 and the laser light source 1 are fixed in an installation On board, the sample cell with its optical system 2 and the spectrometer 3 are independent and transmit information through light.

[0019] The laser light source 1 is composed of an all-solid-state frequency-doubled laser 6 pumped by a semiconductor diode laser, a Glan prism 7 and an isolator 8 . The three are fixed together on the mounting plate, the Glan prism 7 is placed between the isol...

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Abstract

A device for analyzing gas dissolved in power transformer oil based on Raman technique is featured as connecting sample cell with its optical system to gas compressing device by piping connecting spectrograph to computer through communication line for data exchange, fixing sample cell with its optical system and laser source on an installation plate. The sample cell with its optical system and spectrograph are independent units as they can exchange information to each other by lights.

Description

technical field [0001] The invention relates to a detection device for dissolved gas in transformer oil, in particular to a Raman technology-based analysis device for dissolved gas in power transformer oil, which belongs to the technical field of electric equipment state detection. Background technique [0002] Large-scale power transformers are one of the most important and expensive equipment in power transmission and transformation systems. The quality of their insulation conditions is related to whether the power system can operate safely and reliably. A large number of studies and practices on dissolved gas analysis (DGA) in transformer oil at home and abroad have shown that H dissolved in transformer oil 2 、CH 4 、C 2 h 2 、C 2 h 4 、C 2 h 6 , CO and CO 2 The ratio between the content of gas components, the gas production rate and its content is reliable information reflecting the internal insulation state of the transformer, and can detect latent defects and faul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/47G01N21/51
Inventor 黄鞠铭夏宇兴杨虎高成岳
Owner 上海众毅工业控制技术有限公司
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