基于峰度的变压器油中特征气体拉曼光谱分析  

Raman Analysis on Characteristic Gases in Transformer Oil Based on Kurtosis

作　　者：陈新岗[1,2,3] 杨定坤[1] 谭昊[1] 马骏[1] 谭毓苗 

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [3]重庆市能源互联网工程技术研究中心,重庆400054

出　　处：《高电压技术》2017年第7期2256-2262,共7页High Voltage Engineering

基　　金：国家自然科学基金青年科学基金(51107155);重庆市教委科学技术研究项目(KJ1400917);重庆市科委研究项目(CSTC2013jcyj A900019)~~

摘　　要：为了在现有实验条件的基础上提高拉曼光谱检测用于变压器油中溶解气体定量分析的精度,进而更加准确地获取变压器的工作状态,从描述性统计学角度入手,挖掘拉曼光谱中新的特征参量,发现描述性统计参量峰度,可用作拉曼光谱分析中的新参量。针对乙炔气体的拉曼光谱实验数据,分别用基于Gauss Amp拟合的谱峰参数定量分析方法和基于峰度的定量分析方法进行了处理,并对结果进行了基于统计学的评价。得到基于峰度拟合的相关系数与校正决定系数分别为0.992 51和0.982 94,大于基于Gauss Amp谱峰参数拟合的0.979 52和0.953 66。表明基于峰度的定量分析在未对实验数据预处理的情况下得到了比目前拉曼气体检测定量分析更好的效果。Aiming at improving the precision of the Raman quantitative analysis on the dissolved gas in transformer oil under the existing experimental conditions and obtaining more accurate running states of the transformers, we find new characteristic parameters from the view of the descriptive statistics, and the descriptive statistic parameter kurtosis is found helpful when used as a new parameter in Raman spectra analysis. The quantitative analysis of the acetylene gas has been made respectively based on the GaussAmp fitting and the kurtosis. For the quantitative analysis, the correlation co- efficient and the adjusted determination coefficient of the fitting based on kurtosis are 0.992 51 and 0.982 94, greater than those of the other one（0.979 52 and 0.953 66）. Namely, the quantitative analysis based on kurtosis has been found rather better in the absence of pretreatment of the experimental data.

关 键 词：变压器油中溶解气体 拉曼光谱 GAUSS Amp拟合 描述性统计 峰度 定量分析 

分 类 号：TM41[电气工程—电器]