中国电机工程学报2017，Vol.37Issue(18)：5504-5510,7.DOI:10.13334/j.0258-8013.pcsee.162019
基于频率锁定吸收光谱技术的变压器故障特征气体检测研究
Detection Study of Transformer Fault Characteristic Gases Based on Frequency-locking Absorption Spectroscopy Technology
摘要
Abstract
Highly accurate and sensitive detection of fault characteristic gases is the key to diagnosing incipient transformer faults through dissolved gas analysis.In this paper,the detection study of transformer fault characteristic gases based on the frequency-locking absorption spectroscopy technology was carried out.Based on electric quadruple transitions theory,it had been proved that homonuclear diatomic molecule,such as H2,also exist absorption effect.To improve the detection limit of minimum concentration of H2,a frequency-locking cavity enhanced absorption spectroscopy platform for gas measurement was built up.The qualitative and quantitative analysis of fault characteristic gas H2 in transformer was achieved for the first time,the detection accuracy and repeatability is about 93.82％ and 94.35％,respectively.The experimental value of minimum detectable concentration of H2 reaches approximately 7.5μL/L,the relative deviation of is only 3.8％ when comparing to the calculated value.In addition,based on laser array technology,the measurement of other 6 kinds of fault characteristic gas-mixtures (CO、CO2、CH4、C2H2、C2H4 and C2H6) was achieved,the detection accuracy and minimum detectable concentration of which satisfy the requirement of dissolved gases analysis in transformer oil.All of which provides a theoretical basis and technical support for develop a live detection system for transformer fault characteristic gas based on frequency-locking absorption spectroscopy technology.关键词
油中溶解气体分析/H2吸收谱线/电四极跃迁/频率锁定增强腔/激光器阵列Key words
oil-dissolved gas analysis/absorption lines of H2/electric quadruple transitions/frequency-locking enhanced cavity/laser array分类
信息技术与安全科学引用本文复制引用
万福,陈伟根,王品一,王建新,王美林..基于频率锁定吸收光谱技术的变压器故障特征气体检测研究[J].中国电机工程学报,2017,37(18):5504-5510,7.基金项目
国家自然科学基金项目(61605020) （61605020）
重庆市基础科学与前沿技术研究专项(cstc2016jcyjA0427) （cstc2016jcyjA0427）
中国及重庆市博士后科学基金项目(2016M600722,2017T100675,Xm201602).Project supported by National Natural Science Foundation of China (61605020) （2016M600722,2017T100675,Xm201602）
Chongqing Research Program of Basic Research and Frontier Technology(cstc2016jcyjA0427) （cstc2016jcyjA0427）
the China and Chongqing Postdoctoral Science Foundatio (2016M600722,2017T100675,Xm201602) （2016M600722,2017T100675,Xm201602）
