Research on technology of dissolved gas analysis in oil based on T-type resonant photoacoustic cell

Guangzhen Wang; Shuai Yuan; Jinchao Du; Dehui Fu; Fei Du

doi:10.1117/12.3007673

18 December 2023 Research on technology of dissolved gas analysis in oil based on T-type resonant photoacoustic cell

Guangzhen Wang, Shuai Yuan, Jinchao Du, Dehui Fu, Fei Du

Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 129681L (2023) https://doi.org/10.1117/12.3007673
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Aiming at the need of detecting trace dissolved characteristic gases in transformer oil, technology of dissolved gas analysis (DGA) in oil based on a T-type photoacoustic (PA) cell with a small capacity was proposed. The capacity of the T-type PA cell was reduced to 30 mL by optimizing the parameters. This resulted in a significant reduction in sampling volume of transformer oil. A laser photoacoustic spectroscopy (PAS) system for DGA in oil was built combined with headspace degassing method. The T-type resonant PA cell was used to enhance PA signals. The second-harmonic wavelength modulation spectroscopy (2f-WMS) technology was used for detection of escaped gases. The experimental results show that the detection limit of acetylene (C2H2) gas dissolved in oil is 0.5 μL/L when the oil volume is 50 mL. The technical scheme has the advantages of small oil extraction volume, high precision and fast response speed.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Guangzhen Wang, Shuai Yuan, Jinchao Du, Dehui Fu, and Fei Du "Research on technology of dissolved gas analysis in oil based on T-type resonant photoacoustic cell", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 129681L (18 December 2023); https://doi.org/10.1117/12.3007673

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