title: Fourier transform infrared spectroscopy quantitative analysis of SF6 partial discharge decomposition components.
abstract: Gas-insulated switchgear (GIS) internal SF6 gas produces specific decomposition components under partial discharge (PD). By detecting these characteristic decomposition components, such information as the type and level of GIS internal insulation deterioration can be obtained effectively, and the status of GIS internal insulation can be evaluated. SF6 was selected as the background gas for Fourier transform infrared spectroscopy (FTIR) detection in this study. SOF2, SO2F2, SO2, and CO were selected as the characteristic decomposition components for system analysis. The standard infrared absorption spectroscopy of the four characteristic components was measured, the optimal absorption peaks were recorded and the corresponding absorption coefficient was calculated. Quantitative detection experiments on the four characteristic components were conducted. The volume fraction variation trend of four characteristic components at different PD time were analyzed. And under five different PD quantity, the quantitative relationships among gas production rate, PD time, and PD quantity were studied.
authors.affiliation: (a)State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Xiaoxing
authors.initials: X
authors.lastname: Zhang
authors.affiliation: (a)State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Heng
authors.initials: H
authors.lastname: Liu
authors.affiliation: (b)State Grid Chongqing Qi'nan Power Supply Company, Chongqing 401420, China.
authors.forename: Jiangbo
authors.initials: J
authors.lastname: Ren
authors.affiliation: (a)State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.affiliation: (a)State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
mesh_terms: D065966:Absorption, Physicochemical; D005740:Gases / Q000737:chemistry; D012015:Reference Standards; D017550:Spectroscopy, Fourier Transform Infrared; D013459:Sulfur Hexafluoride / Q000737:chemistry*
chemical_list: D005740:Gases; D013459:Sulfur Hexafluoride
keywords: Decomposition components; Fourier transform infrared spectroscopy; Partial discharge; Quantitative analysis; SF(6)