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 :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens
fDate :
6/1/2006 12:00:00 AM
Abstract :
This paper points out the advantages offered by the temperature dependent dielectric spectroscopy in frequency domain, as an additional diagnostic technique for insulation testing of power transformers for life-time prediction. Complex permittivity measurements have been carried out as a function of operating frequency and oil temperature for a wide selection of high voltage transformers and the gaseous byproduct concentrations were also monitored. The work correlates dielectrometry data to the gas chromatography ones
Keywords :
chromatography; frequency-domain analysis; insulation testing; permittivity measurement; power transformer insulation; power transformer testing; transformer oil; dielectric spectroscopy; frequency domain analysis; gas chromatography; high-voltage power transformer oil; insulation testing; permittivity measurement; Dielectrics; Electrochemical impedance spectroscopy; Frequency domain analysis; Gas chromatography; Insulation testing; Oil insulation; Permittivity measurement; Petroleum; Power transformers; Temperature dependence;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2006.1657972
