Open AccessOn-line Monitoring of GIS Using Fourier Transform Infrared Spectroscopy
Author(s) -
Wenjie Zheng,
Chengqi Li,
Jiajun Qin,
Jie Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1576/1/012051
Subject(s) - switchgear , fourier transform infrared spectroscopy , moisture , remote sensing , environmental science , infrared , fourier transform , decomposition , process engineering , fourier transform spectroscopy , line (geometry) , infrared spectroscopy , computer science , materials science , optics , engineering , chemistry , mechanical engineering , physics , mathematics , geology , composite material , geometry , organic chemistry , quantum mechanics
Different decomposition component gases caused by different insulation defects in gas-insulated switchgear will accelerate insulation degradation, which is a major threat to human and equipment safety. In this paper, we proposed online monitoring of GIS based on Fourier transform infrared spectroscopy. Firstly, we analysed the absorption characteristics of infrared light in SO 2 and moisture. Secondly, we introduce the design principle and signal stabilization method of the laser. Thirdly, we propose the methods for measuring the concentration of SO 2 and moisture. Finally, experiments with various concentration of SO 2 and moisture are deployed, which proves that the GIS on-line monitoring method for decomposed gas has small measurement error and can be applied in practical applications.