Order Publications

Reference: ISH2015_456

Type:
ISH Collection
Title:

Detection of Furfural Concentration in Transformer Oil Using Laser Raman Spectroscopy

 

Abstracts

Power transformers are one of the most important electrical equipment in power systems. The analysis of furfural concentration is regard as an important means of estimating degradation of insulating paper in oil-immersed power transformers. Using Laser Raman Spectroscopy (LRS) to detect furfural concentration can overcome many disadvantages of traditional detection methods and realize fast test. In this paper, the application of LRS in the detection of furfural concentration has been studied. First of all, based on the basic principle of LRS, we expound the mechanism using LRS for quantitative and qualitative detection. Gaussian 09W was used to build the structure model of furfural molecule and analyze the Raman spectrogram of furfural molecule. LRS liquid detection test platform was built based on confocal Raman technology. Standard samples of transformer oil were tested utilizing this test platform directly. In order to further improve the detection sensitivity, extraction technology was applied. Experimental results showed that: After extracting by acetonitrile, the detection limit of furfural in transformer oil reached 0.12 mg/L. Applying the least square method, we established the quantitative model between the concentration of furfural in transformer oil and the Raman characteristic peak area of furfural. At last, test results were compared with results measured by High Performance Liquid Chromatography (HPLC). The comparison results showed that LRS with extraction can quantitatively detect the furfural concentration in transformer oil effectively (the maximum error less than 10.83%), which proposes a new way to realizing the fast testing of furfural concentration in transformer oil.
 

File Size: 700,5 KB

Year: 2015

 
 
 
Download
Member
FREE free
Non member
FREE free
 

Your AccountYour Account

Password forgotten

Members

may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications

ContactContact

For any questions in connection with the on-line library, contact:


Publications and Editions Manager

publications@cigre.org