CS_2气体紫外差分吸收光谱的温度特性研究
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摘要
CS_2气体是一种大气恶臭污染物,也是全封闭气体绝缘组合电器故障诊断的重要特征气体。但检测环境的温度变化直接影响监测数据的准确性。研究利用CS_2在紫外波段有明显的特征吸收特性,采用连续光源以及差分吸收光谱技术对不同浓度的CS_2气体,在不同温度环境下进行监测。CS_2气体浓度的反演采用最小二乘法,并对反演结果进行最小二乘法拟合得到温度补偿公式。实验结果显示CS_2气体差分吸收强度随温度的上升呈二次曲线式减小,导致浓度误差逐渐增大,在气体浓度较低时尤为明显。将温度补偿公式用于实际浓度的测量,实验浓度的误差由补偿前的最大17%降至5%以内。
CS_2 gas is not only an atmospheric odor pollutant,but also a crucial characteristic gas for fault diagnosis of Gas Insulated Switchgear.However,the temperature change in the detection environment directly affects the accuracy of the monitoring data.The paper uses CS_2 gas to have noticeable characteristic absorption characteristics in the ultraviolet band.Continuous light sources and differential absorption spectroscopy techniques are utilized to monitor different concentrations of CS_2 gas at different temperatures.The inversion of the CS_2 gas concentration is carried out by the least squares method,and the inversion result is subjected to least squares fitting to obtain a temperature compensation formula.The experimental results show that the UV differential absorption of CS_2 gas decreases with the increase of temperature into a quadratic curve,resulting in a gradual increase in concentration error.This is particularly noticeable when the gas concentration is low.The temperature compensation formula is used for the measurement of the actual concentration,and the error of the experimental concentration was reduced to within 5% from the maximum 17% before compensation.
CS_2 gas is not only an atmospheric odor pollutant,but also a crucial characteristic gas for fault diagnosis of Gas Insulated Switchgear.However,the temperature change in the detection environment directly affects the accuracy of the monitoring data.The paper uses CS_2 gas to have noticeable characteristic absorption characteristics in the ultraviolet band.Continuous light sources and differential absorption spectroscopy techniques are utilized to monitor different concentrations of CS_2 gas at different temperatures.The inversion of the CS_2 gas concentration is carried out by the least squares method,and the inversion result is subjected to least squares fitting to obtain a temperature compensation formula.The experimental results show that the UV differential absorption of CS_2 gas decreases with the increase of temperature into a quadratic curve,resulting in a gradual increase in concentration error.This is particularly noticeable when the gas concentration is low.The temperature compensation formula is used for the measurement of the actual concentration,and the error of the experimental concentration was reduced to within 5% from the maximum 17% before compensation.
引文
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[13] 彭夫敏,林艺辉,谢品华,等.分辨率对DOAS测量二硫化碳影响的研究[J].光谱学与光谱分析,2008,28(11):2473-2477 (PENG Fumin,LIN Yihui,XIE Pinhua,et al.Study on the Influence of resolution on the measurement of carbon disulfide by DOAS[J].Spectroscopy and Spectral Analysis,2008,28(11):2473-2477)
[14] 张学典,黄显,徐可欣,等.差分吸收光谱反演方法在环境监测系统中的研究[J].光谱学与光谱分析,2007,11(27):2367-2370 (ZHANG Xuedian,HUANG Xian,XU Kexin,et al.Study on differential absorption spectral inversion method in environmental monitoring system[J].Spectroscopy and Spectral Analysis,2007,11(27):2367-2370)
[15] 李峥辉,姚顺春,卢伟业,等.测量的温度影响修正方法研究[J].光谱学与光谱分析,2018,38(07):2048-2053 (LI Zhenghui,YAO Shunchun,LU Weiye,et al.Study on the correction method of temperature influence of measurement[J].Spectroscopy and Spectral Analysis,2018,38(07):2048-2053)
[2] 周文俊,乔胜亚,李丽,等.GIS中盆式绝缘子沿面放电的新特征气体[J].高电压技术,2015,41(03):848-856 (ZHOU Wenjun,QIAO Shengya,LI Li,et al.A New Characteristic Gas for the Surface Discharge of Insulators[J].High Voltage Engineering,2015,41(03):848-856)
[3] ERIKSSON A,PETTERSSON KG,KRENICKY A,et al.Experience with gas insulated substations in the USA[P].Transmission and Distribution Conference,Proceedings of the 1994 IEEE Power Engineering Society,1994
[4] 郑晓光,郑宇,唐念,等.内环氧树脂绝缘沿面放电强度与产气关联规律的模拟实验[J].电工技术学报,2015,30(17):172-179 (ZHENG Xiaoguang,ZHENG Yu,TANG Nian,et al.Simulation experiment on the relationship between the discharge intensity of the epoxy resin insulation and the gas production[J].Transactions of China Electrotechnical Society,2015,30(17):172-179)
[5] 刘凯,汲胜昌,钟理鹏,等.500kV SF6电流互感器电容屏缺陷下的气体分解特性[J].西安交通大学学报,2017,51(02):111-120 (LIU Kai,JI Shengchang,ZHONG Lipeng,et al.Gas decomposition characteristics of 500kV SF6 current transformer capacitor screen defects[J].Journal of Xi'an Jiaotong University,2017,51(02):111-120)
[6] 周文俊,乔胜亚,郑宇,等.基于特征气体COS和CS2的GIS内环氧树脂固体介质绝缘状态监测[J].高电压技术,2017,43(08):2551-2557 (ZHOU Wenjun,QIAO Shengya,ZHENG Yu,et al.Monitoring of solid state insulation of epoxy resin in GIS based on characteristic gas COS and CS2[J].High Voltage Engineering,2017,43(08):2551-2557)
[7] 郑海明,靳伟佳.温度对二氧化硫紫外吸收特性的影响[J].光谱学与光谱分析,2013,33(03):776-779 (ZHENG Haiming,JIN Weijia.Influence of temperature on ultraviolet absorption characteristics of sulfur dioxide[J].Spectroscopy and Spectral Analysis,2013,33(03):776-779)
[8] 程林,唐炬,黄秀娟,等.局部过热状态下涉及有机绝缘材料的分解产物生成特性[J].高电压技术,2015,41(02):453-460 (CHENG Lin,TANG Ju,HUANG Xiujuan,et al.Generation characteristics of decomposition products involving organic insulating materials under local overheating[J].High Voltage Engineering,2015,41(02):453-460)
[9] 黄秀娟.涉及有机固体绝缘材料时六氟化硫局部过热分解产物研究[D].重庆大学,2015 (HUANG Xiujuan.Study on the local superheat decomposition products of sulfur hexafluoride involved in organic solid insulation materials [D].Chongqing University,2015)
[10] 郑海明,蔡小舒.温度对二氧化硫紫外差分吸收特性影响的实验研究[J].工程热物理学报,2006,27(4):714-716 (ZHENG Haiming,CAI Xiaoshu.Experimental study on the effect of temperature on ultraviolet differential absorption characteristics of sulfur dioxide[J].Journal of Engineering Thermophysics,2006,27(4):714-716)
[11] 汪海涛,胡长江,牟玉静.二硫化碳气体近紫外吸收截面积测定[J].光谱学与光谱分析,2009,29(06):1586-1589 (WANG Haitao,HU Changjiang,YAN Yujing.Determination of near-UV absorption cross-sectional area of carbon disulfide gas[J].Spectroscopy and Spectral Analysis,2009,29(06):1586-1589)
[12] 崔厚欣,齐汝宾,张文军,等.295～315 nm范围内温度对SO2吸收截面的定量影响[J].光电工程,2008,35(10):7-11 (CUI Houxin,QI Yi-bin,ZHANG Wenjun,et al.Quantitative effects of temperature on the absorption cross section of SO2 in the range of 295-315 nm[J].光电工程,2008,35(10):7-11)
[13] 彭夫敏,林艺辉,谢品华,等.分辨率对DOAS测量二硫化碳影响的研究[J].光谱学与光谱分析,2008,28(11):2473-2477 (PENG Fumin,LIN Yihui,XIE Pinhua,et al.Study on the Influence of resolution on the measurement of carbon disulfide by DOAS[J].Spectroscopy and Spectral Analysis,2008,28(11):2473-2477)
[14] 张学典,黄显,徐可欣,等.差分吸收光谱反演方法在环境监测系统中的研究[J].光谱学与光谱分析,2007,11(27):2367-2370 (ZHANG Xuedian,HUANG Xian,XU Kexin,et al.Study on differential absorption spectral inversion method in environmental monitoring system[J].Spectroscopy and Spectral Analysis,2007,11(27):2367-2370)
[15] 李峥辉,姚顺春,卢伟业,等.测量的温度影响修正方法研究[J].光谱学与光谱分析,2018,38(07):2048-2053 (LI Zhenghui,YAO Shunchun,LU Weiye,et al.Study on the correction method of temperature influence of measurement[J].Spectroscopy and Spectral Analysis,2018,38(07):2048-2053)