高电压技术2019，Vol.45Issue(4)：1034-1039,6.DOI:10.13336/j.1003-6520.hve.20190215002
基于紫外光谱的C4F7N/CO2混合气体混合比检测
Mixing Ratio Detection for C4F7N/CO2 Mixed Gas Based on Ultraviolet Spectroscopy
摘要
Abstract
C4F7 N/CO2 mixed gas is a new type of environmentally friendly insulation medium with the potential to replace SF6 gas, which has received extensive attention from researchers. The insulation performance of C4F7 N/CO2 mixed gas is closely related to the percentage of C4F7 N. Therefore, it is of great significance to quickly and accurately detect the percentage of C4F7 N in the mixed gas. There is no relevant reports on the method for rapid quantitatively detecting the percentage of C4F7 N in mixed gas. Consequently, we built a C4F7 N gas analysis platform based on UV spectroscopy, and experimentally analyzed the UV absorption spectrum characteristics of C4F7 N. The UV spectral information of C4F7 N gas at 185～210 nm was acquired. The inversion algorithm of unknown concentration gas was determined by the spectral information, and the rapid detection of the percentage of C4F7 N in C4F7 N/CO2 mixed gas was finally realized. It is found that C4F7 N has a distinct absorption peak at 185～210 nm. In the conventional percentage range in C4F7 N/CO2 mixed gas (4％～10％), the R2 of the mixture ratio inversion curve is as high as 0.999 9, and the mixture ratio inversion error does not exceed 0.88％. The related research results provide an excellent solution for monitoring the mixture ratio of C4F7 N in C4F7 N/CO2 mixed gas insulated equipment.关键词
环保绝缘介质/C4F7N/CO2/紫外光谱特性/混合比检测/快速分析/在线监测Key words
environmentally friendly insulation medium/C4F7N/CO2/UV spectral characteristics/mixing ratio detection/rapid analysis/on-line monitoring引用本文复制引用
张晓星,张引,傅明利,李祎,刘畅,卓然..基于紫外光谱的C4F7N/CO2混合气体混合比检测[J].高电压技术,2019,45(4):1034-1039,6.基金项目
中国南方电网重点科技项目 (ZBKJXM20170090) （ZBKJXM20170090）
