A novel gas sensor used for C[sub]2[/sub]H[sub]2[/sub] trace detection in power transformer

Zhiqun Ding; Jilong Bao; Xiaohui Fang; Hongxia Zhao; Hui Ja

doi:10.1117/12.865966

12 October 2010 A novel gas sensor used for C₂H₂ trace detection in power transformer

Zhiqun Ding, Jilong Bao, Xiaohui Fang, Hongxia Zhao, Hui Ja

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 765655 (2010) https://doi.org/10.1117/12.865966
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

A novel gas sensor has been presented using tunable diode laser absorption spectroscopy (TDLAS) technique for incipient faults monitoring in power transformer. In this sensor, near infrared distribute feedback laser diode (DFB LD) is used as light source, a 0.5m short optical path cell is used as absorbing cell , two InGaAs PIN photo diodes are used as detector. Applying TDLAS technique and Wavelength modulation spectroscopy (WMS) technique, and combining with ARM9 S3C2140 processor controlling, the system has been implemented compact and flexible. The concentration monitoring based on TDLAS method is obtained in situ and in real time, and the detected precision is below ppm degree, which can meet the requirement for power transformer incipient faults.

Citation Download Citation

Zhiqun Ding, Jilong Bao, Xiaohui Fang, Hongxia Zhao, and Hui Ja "A novel gas sensor used for C₂H₂ trace detection in power transformer", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765655 (12 October 2010); https://doi.org/10.1117/12.865966

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