A Review of Gas Generation Mechanisms and Optical Detection Techniques for Mineral Oil

This article critically reviews the gas generation mechanisms and optical detection techniques in mineral oil, focusing on the fundamental principles of gas generation mechanisms and the existing optical detection methods used to monitor the content of dissolved gas in oil. The physical and chemical processes governing the gas generation mechanism in mineral oil are described, followed by a comprehensive overview of commonly used optical detection techniques such as absorption spectroscopy, laser Raman spectroscopy (LRS), photoacoustic spectroscopy (PAS), and photothermal spectroscopy (PTS). A comparison of these techniques highlights their respective advantages and limitations. This review concludes by summarizing key findings and providing recommendations for future research directions. This review will provide useful references for future research on monitoring dissolved gases in mineral oil and improving the reliability and safety of electrical equipment.