Abstract
This paper investigates an application of near-infrared photoacoustic spectroscopy (PAS) to analyze the dissolved gas-in-oil of a transformer. A near-infrared tunable fiber laser-based PAS system has been developed. Using this system, the gas detection limits (signal-to-noise ratio = 1) of 4 ppb at 1531.59 nm for \(\mathrm{C}_{2}\mathrm{H}_{2}\), 39 ppm at 1565.98 nm for CO, and 34 ppm at 1572.34 \(\mathrm{CO}_{2}\) are reached. In addition, the fault gas (\(\mathrm{C}_{2}\mathrm{H}_{2}\)) is produced by a transformer spatial discharge simulation system, and the productivity of the gas is measured quantitatively. The experiment demonstrates the near-infrared PAS system is able to be applied to the dissolved gas analysis of a transformer.
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This work was supported in part by the National Natural Science Foundation of China (Grant Nos. 51277021 and 61307105).
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Mao, X., Zhou, X., Zhai, L. et al. Dissolved Gas-in-Oil Analysis in Transformers Based on Near-Infrared Photoacoustic Spectroscopy. Int J Thermophys 36, 940–946 (2015). https://doi.org/10.1007/s10765-014-1713-2
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DOI: https://doi.org/10.1007/s10765-014-1713-2