电工技术学报2012，Vol.27Issue(5)：70-76,7.
SF6局部放电分解组分长光程红外检测
Research on Long Optical Paths for SF6 Partial Discharge Decomposition Components＇ Infrared Detection
摘要
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.关键词
SF6/红外吸收光谱法/分解气体/局部放电/气体池Key words
SF6/Fourier transform infrared spectroscopy/decomposition products/partialdischarge/gas cell分类
信息技术与安全科学引用本文复制引用
张晓星,任江波,胡耀垓,唐炬,孟凡生..SF6局部放电分解组分长光程红外检测[J].电工技术学报,2012,27(5):70-76,7.基金项目
国家重点基础研究发展计划项目（973计划）（2009CB724506）,输配电装备及系统安全与新技术国家重点实验室自主研究项目（2007DAl0512708406）资助. （）
