Title :
Dielectric spectroscopy and gas chromatography methods applied on high-voltage transformer oils
Author :
Dervos, C.T. ; Paraskevas, C.D. ; Skafidas, P.D. ; Stefanou, N.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
Abstract :
The objective of this work is to point out the advantages offered by the temperature dependent dielectric spectroscopy in frequency domain, as a possible diagnostic tool for power transformer lifetime prediction. Characterization of the insulating oil has been carried out for a wide selection of transformers and their gas concentrations were monitored. The work correlates gas chromatography data to the dielectrometry ones.
Keywords :
chromatography; dielectric materials; frequency-domain analysis; life testing; power transformer insulation; transformer oil; frequency domain; gas chromatography methods; high-voltage transformer oils; insulating oil; power transformer lifetime prediction; temperature dependent dielectric spectroscopy; Dielectrics and electrical insulation; Electrochemical impedance spectroscopy; Frequency domain analysis; Gas chromatography; Gas insulation; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Temperature dependence;
Conference_Titel :
Dielectric Liquids, 2005. ICDL 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8954-9
DOI :
10.1109/ICDL.2005.1490069
