AI Article Synopsis
- Traditional chromatography for monitoring transformer dissolved gases has issues like needing a carrier gas, regular calibrations, and lower safety.
- A new system using Fourier Transform Infrared Spectroscopy (FTIR) was developed to address these problems, focusing on the challenges of detecting small amounts of various gases.
- The study demonstrated that using FTIR, along with advanced modeling techniques, effectively measures key gases like CH4, C2H6, and CO2, meeting industry standards with impressive resolution.
Article Abstract
For the defects of requiring carrier gas and regular calibration, and low safety using chromatography to on line monitor transformer dissolved gases, it was attempted to establish a dissolved gas analysis system based on Fourier transform infrared spectroscopy. Taking into account the small amount of characteristic gases, many components, detection limit and safety requirements and the difficulty of degasser to put an end to the presence of interference gas, the quantitative analysis model was established based on sparse partial least squares, piecewise section correction and feature variable extraction algorithm using improvement TR regularization. With the characteristic gas of CH4, C2H6, C2H6, and CO2, the results show that using FTIR meets DGA requirements with the spectrum wave number resolution of 1 cm(-1) and optical path of 10 cm.
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