激光拉曼光谱应用于变压器油中溶解气体分析

发布时间：2018-05-04 04:35

本文选题：油中溶解气体 + 拉曼光谱　；参考：《中国电机工程学报》2014年15期

【摘要】：变压器油中溶解气体在线监测是实施变压器状态检修的重要手段之一。激光拉曼光谱技术能直接使用单一频率的激光对混合气体进行非接触式的测量,符合在线监测的要求。利用激光拉曼光谱对变压器油中溶解气体进行分析,能克服传统在线监测方法的诸多不足。对激光拉曼光谱在变压器油中溶解气体分析中的应用进行了研究。分析了变压器油中7种主要故障特征气体(H2、CH4、C2H6、C2H4、C2H2、CO、CO2)的拉曼特征频谱,并阐述了基于特征频谱和最小二乘法对7种特征气体进行定性定量分析的方法。利用共聚焦拉曼技术和镀银石英玻璃管制成的气体样品池,构建了激光拉曼光谱气体分析试验平台。结合平台研究了7种故障特征气体的拉曼光谱检测特性,并与实验室气相色谱法的测量结果进行了对比。对比结果表明,激光拉曼光谱能有效地对变压器油中溶解气体进行定量分析,为变压器油中溶解气体的拉曼光谱在线监测奠定了基础。
[Abstract]:On-line monitoring of dissolved gases in transformer oil is one of the important means to implement transformer condition maintenance. Laser Raman spectroscopy can directly use a single frequency laser for non-contact measurement of mixed gases, which is in line with the requirements of on-line monitoring. The analysis of dissolved gases in the transformer oil by laser Raman spectroscopy can be overcome. The application of laser Raman spectroscopy in the analysis of dissolved gases in transformer oil is studied. The Raman characteristic spectrum of 7 main fault characteristic gases (H2, CH4, C2H6, C2H4, C2H2, CO, CO2) in transformer oil is analyzed, and the characteristics of 7 characteristic gases based on characteristic spectrum and least square method are explained. Using the method of qualitative and quantitative analysis, the laser Raman spectrum gas analysis test platform is constructed by using the confocal Raman Raman technique and the gas sample pool made of silver plated quartz glass tube. The Raman spectrum detection characteristics of 7 kinds of fault characteristic gases are studied with the platform, and the comparison with the results of the laboratory gas chromatography is compared. The results show that the laser Raman spectroscopy can effectively analyze the dissolved gases in the transformer oil and lay a foundation for the on-line monitoring of the dissolved gases in the transformer oil.

【作者单位】：输配电装备及系统安全与新技术国家重点实验室(重庆大学);国网重庆市电力公司电力科学研究院;
【基金】：国家重大科学仪器设备开发专项(2012YQ16000705) 国家重点基础研究发展计划项目(973项目)(2012CB215205)~~
【分类号】：TM41

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