Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
권호 표지
DOI QR코드

DOI QR Code

Measurement of Electrical Insulating Oil Oxidation by Evaluating the UV Fluorescence Emission Ratio

자외선 형광 방출비 평가에 의한 전기 절연유의 산화측정

  • Received : 2012.12.01
  • Accepted : 2013.01.07
  • Published : 2013.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

In this work, a new fluorescence emission measurement technology was introduced and experimentally compared with other measurement methods, such as the titration method and IR spectroscopy, to validate it for the oil oxidation measurement of electrical insulating oil. The oxidation characteristics of insulating oil were found to be fairly represented by the titration method and IR spectroscopy, and the results are comparable to a change in the fluorescence emission ratio that is defined as the shift in fluorescence intensity in the measured wavelength range. The result also shows that by the measurement of fluorescence emission ratio, it is possible to detect the oxidation of oil relatively earlier than by other methods. This study suggests that the developed technology can provide sufficient information for evaluating the insulating oil quality, and that the developed FER sensor can be used as an effective condition monitoring device of electrical insulating oil oxidation.

Keywords

References

  1. Reygaerts, Anne., "Transformer Oil Analysis - An Essential Part of a Cost-Efficient Maintenance Program, Practicing Oil Analysis," http://www.machinerylubrication. com/Articles/Print/282 , 1/2002.
  2. Gray, I.A.R., "A Guide to Transformer Oil Analysis. Transformer Chemistry Services," http://www.satcs.co.za/ Transformer_Oil_Analysis.pdf.
  3. Markova, L.V., Myshkin, N.K., Ossia, and C.V., Kong, H., "Fluorescence Sensor for Characterization of Hydraulic Oil Degradation," Tribology in industry, Vol. 29, No. 1&2, 2007.
  4. El-Sayed., Salem, M.R., Wael, A., Ahmed., "Prediction of the Characteristics of transformer oil under Different Operation Conditions," World Academy of Science, Engineering and Technology 53, 2009.
  5. Pradier, B., Largeau, C., and Derenne, S. et al., "Chemical Basis of Fluorescence Alteration of Crude and Kerogens," Microfluorimetry of an oil and its isolated fractions; relationships with chemical structure, Org. Geochem., Vol.16, Nos. 1-3, pp. 451-460, 1990. https://doi.org/10.1016/0146-6380(90)90061-4
  6. Kong et. Al., Apparatus for measuring oil oxidation using fluorescent light reflected from oil, Korean Patent No. 0789724, 2007.
  7. Kong et. Al., Apparatus for measuring oil oxidation using fluorescent light reflected from oil, US Patent No. 7,136,155 B2, 2008.
  8. ASTM 2440-99, Standard Test Method for Oxidation Stability of Mineral Insulating Oil.
  9. ASTM D974-11, Standard Test Method for Acid and Base Number by Color-Indicator Titration.
  10. User manual of Oil Test Centre, http://www.kittiwake. com/oil-test-centre.
  11. ASTM E2412-04, Standard Practice for Condition Monitoring of Used Lubricants by Trend Analysis Using Fourier Transform (FT-IR) Spectrometry.
  12. User manual of $FluidScan^{(R)}$Q1000, http://www.spectro. cz/store/spectro-fluidscan-q1000.pdf.