Tracing Acetylene Dissolved in Transformer Oil by Tunable Diode Laser Absorption Spectrum.
Tracing Acetylene Dissolved in Transformer Oil by Tunable Diode Laser Absorption Spectrum.
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DOI：
10.1038/s41598-017-13823-0
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发表时间：
2017-11-02
影响因子：
4.6
通讯作者：
Wu H
中科院分区：
文献类型：
--
作者：
Ma GM;Zhao SJ;Jiang J;Song HT;Li CR;Luo YT;Wu H
由于电力Transformer中的绝缘材料在异常运行状态下会分解出气体，因此溶解气体分析（DGA）被广泛应用于电力Transformer的监测和诊断。其中，乙炔作为电力Transformer的低能火花放电和高能电气故障（电弧放电）的标志，是重要的监测参数。目前在线DGA设备使用的气体检测方法存在交叉灵敏度、电磁兼容性和可靠性等问题。本文提出了一种基于TDLAS技术的光学气体检测系统，用于检测Transformer油中溶解的乙炔。在近红外波段选择1530.370 nm激光对应乙炔的吸收峰，同时采用波长调制策略和赫里奥特池提高检测精度。方法的检出限为0.49ppm。该检测系统对气体浓度变化响应快，易于维护，无电磁干扰，无交叉敏感性，无载气。此外，该系统一个完整的检测过程仅需8分钟，预示着在线监测技术的实用前景。
Dissolved gas analysis (DGA) is widely used in monitoring and diagnosing of power transformer, since the insulation material in the power transformer decomposes gases under abnormal operation condition. Among the gases, acetylene, as a symbol of low energy spark discharge and high energy electrical faults (arc discharge) of power transformer, is an important monitoring parameter. The current gas detection method used by the online DGA equipment suffers from problems such as cross sensitivity, electromagnetic compatibility and reliability. In this paper, an optical gas detection system based on TDLAS technology is proposed to detect acetylene dissolved in transformer oil. We selected a 1530.370 nm laser in the near infrared wavelength range to correspond to the absorption peak of acetylene, while using the wavelength modulation strategy and Herriott cell to improve the detection precision. Results show that the limit of detection reaches 0.49 ppm. The detection system responds quickly to changes of gas concentration and is easily to maintenance while has no electromagnetic interference, cross-sensitivity, or carrier gas. In addition, a complete detection process of the system takes only 8 minutes, implying a practical prospect of online monitoring technology.
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影响因子：
4.6
作者：
K S N;Sinha S;R P;Poonacha S;Chaudhry G;Bhattacharya A;Choudhury N;Mahalik S;Maity S
通讯作者：
Maity S
影响因子：
2.9
作者：
Duval, M;Dukarm, J
通讯作者：
Dukarm, J
影响因子：
2.1
作者：
Durry, G.;Li, J. S.;Zeninari, V.
通讯作者：
Zeninari, V.
影响因子：
3
作者：
Kannel, Prakash Raj;Lee, Seockheon;Khan, Siddhi Pratap
通讯作者：
Khan, Siddhi Pratap
影响因子：
1.9
作者：
Schilt, S;Thévenaz, L;Robert, P
通讯作者：
Robert, P