SF<sub>6</sub>局部放电分解组分长光程红外检测

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Abstract A close relationship is existed between SF₆ partial discharge decomposition components and the insulation condition in gas insulated switchgear(GIS). Monitoring the decomposition components can diagnose the insulated defect of GIS. The SF₆ partial discharge decomposition components are low concentration. To enhance the detection limit, a long optical path gas cell is designed based on the White cell, and the essential parts of the equipment are three conjugated spherical mirrors, which gained long optical paths by the light’s multiple reflections in it, reducing the energy dissipation while increasing the optical paths, 20 meters optical length gas cell matching with Fourier transform infrared spectroscopy (FTIR) is developed. Long and short optical paths gas-cells are used to detect the SF₆ partial discharge decomposition components. It’s found that the 20 meters’ optical length gas cell’s spectrum has a great gas species, high degree of accuracy and signal-to-noise ratio. 20 meters gas cell can fulfill SF₆ partial discharge decomposition components’ quantify research.

Key words： SF Fourier transform infrared spectroscopy decomposition products partial discharge gas cell

Received: 20 August 2010 Published: 20 March 2014

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TM835

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	Zhang Xiaoxing
	Ren Jiangbo
	Hu Yaogai
	Tang Ju
	Meng Fansheng

Cite this article:

Zhang Xiaoxing,Ren Jiangbo,Hu Yaogai等. Research on Long Optical Paths for SF₆ Partial Discharge Decomposition Components’ Infrared Detection[J]. Transactions of China Electrotechnical Society, 2012, 27(5): 70-76.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I5/70

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