Temperature Effect on Dielectric Characteristics of Large Rotating Machines Insulation

Author

Soltani, Reza ; David, Eric ; Lamarre, Laurent

Author_Institution

Ecole de Technol. Super., Montreal, QC

fYear

2008

fDate

9-12 June 2008

Firstpage

280

Lastpage

283

Abstract

Dielectric characteristics of insulation system of large rotating machines can be affected by operational and environmental conditions. Temperature, humidity and contamination affect dielectric parameters such as insulation resistance, polarization index and dissipation factor in certain degrees. In order to investigate temperature effect on characteristics of different insulation materials, time and frequency domain dielectric spectroscopy were conducted on five pieces of different bars and polarization and depolarization currents and dissipation factor were studied at different temperatures. Also temperature effect on insulation resistance of the samples is studied and accuracy of different temperature correction coefficients is investigated.

Keywords

dielectric measurement; dielectric polarisation; electric machines; environmental factors; frequency-domain analysis; insulation testing; machine insulation; spectroscopy; dielectric characteristics; dissipation factor; frequency domain dielectric spectroscopy; insulation resistance; large rotating machines insulation; polarization index; Conducting materials; Contamination; Dielectric devices; Dielectric materials; Dielectrics and electrical insulation; Frequency domain analysis; Humidity; Polarization; Rotating machines; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on

Conference_Location

Vancouver, BC

ISSN

1089-084X

Print_ISBN

978-1-4244-2091-9

Electronic_ISBN

1089-084X

Type

conf

DOI

10.1109/ELINSL.2008.4570329

Filename

4570329