Application of Photoacoustic Spectroscopy Technology in Detection of SF6 Decomposition

Abstract

Abstract:

The basic principles of photoacoustic spectroscopy were introduced. A portable photoacoustic spectroscopy system Transport-X, which could detect a series of DGA products developed by Kelman Company of Limited Liability, was applied to detect CO and SO2 of SF6 decomposition. The filter of SO2 was selected according to the HITRAN2004 database as a result of the incapable of detecting SO2 of Transport-X. One of the filters of Kelman was replaced by the new selected SO2 filter. Calibration experiments of different concentrations of CO and SO2 were carried out and the results showed that photoacoustic signal and the concentration have a perfect linear relationship and the detection limit for CO and SO2 are 4.063ppm and 9.540ppm.

Key words: spectroscopy, SF6 decomposition, photoacoustic signal, GIS

LIU Tiantiian, SU Zhenxi. Application of Photoacoustic Spectroscopy Technology in Detection of SF6 Decomposition[J]. J4, 2015, 32(5): 525-530.

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