Summary
The aging degree of the power transformer can be effectively diagnosed by the concentration of furfural dissolved in transformer oil. Raman spectroscopy can effectively detect the concentration of furfural dissolved in oil using a laser with one wavelength. It has a bright applied prospect without facing with the issue of aging and calibration compared to the traditional liquid chromatography technique. In this paper, the principle of Raman spectrum is briefly introduced, the experimental platform based on the confocal micro Raman system is built up, the detection method of the Raman spectroscopy of furfural dissolved in transformer oil is determined. To lower detection limits, a feasible way to synthesize a surface-enhanced Raman scattering (SERS) substrate has been developed, where Au nanoparticles (AuNPs) of different sizes are assembled on the surface. The surface plasmon resonance between nanoparticles can make a significant contribution to the high sensitivity of SERS to furfural molecules. Efforts have been made to optimize the parameters to increase SERS response. According to the spectral peak position and intensity, the concentration and types of dissolved furfural can be calculated, all of which lay a good foundation for the detection of furfural dissolved in transformer oil.
Additional informations
| Publication type | ISH Collection |
|---|---|
| Reference | ISH2015_662 |
| Publication year | 2015 |
| Publisher | ISH |
| File size | 452 KB |
| Price for non member | Free |
| Price for member | Free |
Authors
Souza Ronimack Trajano de, Zhao Dan, Oliveira Adriano Costa de
