FTIR analysis of transformer fault gases

Xian-yong Liu; Li-ping Shang; Qiu-hai Zhong

doi:10.1117/12.571701

10 January 2005 FTIR analysis of transformer fault gases

Xian-yong Liu, Li-ping Shang, Qiu-hai Zhong

Proceedings Volume 5640, Infrared Components and Their Applications; (2005) https://doi.org/10.1117/12.571701
Event: Photonics Asia, 2004, Beijing, China

Abstract

Dedicated experiments were made to clarify interference of the oil vapor, establish the quantitative analysis model and test its effectiveness in analyzing transformer fault gases with Fourier Transform Infrared. Nicolet Nexus 670 FTIR Spectrometer with a 2-meter vacuumable gas cell is used to collect and examine the spectra of the top gap gases and pyrolytic products of the transformer oil and no additional interference other than diagnostic gases were found. Standard gas samples of CH₄, CO and CO₂ are diluted with super pure nitrogen via mass control flowmeters to get samples with different concentrations dynamically. Spectra of the diluted samples are collected, analyzed and used as calibration standards to measure other samples. It is shown that the absorbance of the spectra can be calculated in height of the peak or in area under the peak and they vary with concentrations in approximate linearity, yet the former is more active and the latter is more passive to be saturated. Repeated measurements say the relative error of the established model is below 4% and typical measured concentrations are 537μL/L for methane and 57μL/L for monoxide.

Citation Download Citation

Xian-yong Liu, Li-ping Shang, and Qiu-hai Zhong "FTIR analysis of transformer fault gases", Proc. SPIE 5640, Infrared Components and Their Applications, (10 January 2005); https://doi.org/10.1117/12.571701

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available