电工技术学报  2016, Vol. 31 Issue (2): 236-243    DOI:
高电压与绝缘 |
变压器油中溶解气体拉曼剖析及定量检测优化研究
陈伟根, 万福, 顾朝亮, 邹经鑫, 漆薇, 王品一
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) 重庆 400044
The Research for Raman Analysis of Dissolved Gases in Transformer Oil and Optimization of Quantitative Detection
Chen Weigen, Wan Fu, Gu Zhaoliang, Zou Jingxin, Qi Wei, Wang Pinyi
State Key Laboratory of Power Transmission Equipment &System Security and New Technology Chongqing University Chongqing 400044 China
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摘要 多种气体(氢气、一氧化碳、二氧化碳、甲烷、乙炔、乙烯和乙烷)的高精度、高灵敏度检测仍是基于溶解气体分析的早期变压器故障诊断的核心。本文从原子结构层面剖析了变压器油中溶解气体的拉曼振动模式及拉曼频谱。搭建了基于表面增强拉曼光谱技术的溶解气体检测平台,得到了单一气体H2、CO、CO2、CH4、C2H2、C2H4和C2H6的拉曼频谱,且实现了溶解故障混合气体的同时检测。通过阿伦方差分析,确定了拉曼检测的最优平均次数,使检测极限提高了约12.8倍。提出了基于气体特征谱峰面积比的定量分析方法, 对现场运行变压器油样进行故障诊断,检测准确率达到96%。
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陈伟根
万福
顾朝亮
邹经鑫
漆薇
王品一
关键词 溶解气体分析拉曼检测阿伦方差特征谱峰面积比    
Abstract:Detection of multiple gases(hydrogen, carbon monoxide, carbon dioxide, methane, acetylene, ethylene and ethane) with high accuracy and sensitivity is still the key of incipient transformer faults diagnosis based on dissolved gas analysis(DGA). In this paper, the Raman vibrational modes and Raman spectrum for dissolved gases in transformer oil were studied at the atomic level. The detecting platform for dissolved gases based on surface-enhanced Raman spectroscopy was built up, achieving Raman spectra for single gas of H2, CO, CO2, CH4, C2H2, C2H4 and C2H6 and the simultaneous detection of seven kinds of dissolved gases. Through Allan variance analysis, the optimum average times of Raman detection, increasing the detection limits by factor of about 12.8. Quantitative analysis based on ratio of gas characteristic spectral area was elaborated, achieving the detection accuracy of 96% for fault diagnosis of oil samples from transformers in the field.
Key wordsDissolved gas analysis    Raman detection    Allan variance    ratio of gas characteristic spectral area   
收稿日期: 2014-04-07      出版日期: 2016-03-03
PACS: TM411  
基金资助:国家重大科学仪器设备开发专项(2012YQ160007)和国家创新研究群体基金(51321063)资助项目
通讯作者: 万 福 男,1987年生,师资博士后,从事基于光谱技术的变压器油中溶解气体在线监测研究。E-mail: wanfuhappy@163.com   
作者简介: 陈伟根 男,1967年生,博士,教授,博士生导师,长江学者特聘教授,从事电气设备在线智能监测及诊断技术研究。E-mail: weigench@cqu.edu.cn
引用本文:   
陈伟根, 万福, 顾朝亮, 邹经鑫, 漆薇, 王品一. 变压器油中溶解气体拉曼剖析及定量检测优化研究[J]. 电工技术学报, 2016, 31(2): 236-243. Chen Weigen, Wan Fu, Gu Zhaoliang, Zou Jingxin, Qi Wei, Wang Pinyi. The Research for Raman Analysis of Dissolved Gases in Transformer Oil and Optimization of Quantitative Detection. Transactions of China Electrotechnical Society, 2016, 31(2): 236-243.
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