Fiber optic gas detection system for health monitoring of oil-filled transformer

H. L. Ho; J. Ju; W. Jin

doi:10.1117/12.834904

5 October 2009 Fiber optic gas detection system for health monitoring of oil-filled transformer

H. L. Ho, J. Ju, W. Jin

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75030T (2009) https://doi.org/10.1117/12.834904
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

This paper reports the development of a fiber-optic gas detection system capable of detecting three types of dissolved fault gases in oil-filled power transformers or equipment. The system is based on absorption spectroscopy and the target gases include acetylene (C₂H₂), methane (CH₄) and ethylene (C2H₄). Low-cost multi-pass sensor heads using fiber coupled micro-optic cells are employed for which the interaction length is up to 4m. Also, reference gas cells made of photonic bandgap (PBG) fiber are implemented. The minimum detectable gas concentrations for methane, acetylene and ethylene are 5ppm, 2ppm and 50ppm respectively.

Citation Download Citation

H. L. Ho, J. Ju, and W. Jin "Fiber optic gas detection system for health monitoring of oil-filled transformer", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75030T (5 October 2009); https://doi.org/10.1117/12.834904

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