Influence of rise time on dielectric parameters extracted from time domain spectroscopy in the context of generator stator insulation

The low-frequency dielectric response of generator stator winding insulation materials was calculated from high voltage time domain spectroscopy measurements. These results were used to calculate the theoretical response after the application of a voltage function consisting of a ramped voltage foll...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2005-06, Vol.12 (3), p.423-428
Main Authors: David, E., Lamarre, L.
Format: Article
Language:English
Subjects:
Dielectric materials
Dielectric measurements
Dielectrics and electrical insulation
Electrochemical impedance spectroscopy
Oil insulation
Polarization
Pollution measurement
Stators
Time measurement
Voltage
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Summary:The low-frequency dielectric response of generator stator winding insulation materials was calculated from high voltage time domain spectroscopy measurements. These results were used to calculate the theoretical response after the application of a voltage function consisting of a ramped voltage followed by a constant level voltage. The rate of rise of the ramped portion of the voltage function was shown to influence the well known and much used polarization index (PI) and insulation resistance (IR) parameters.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2005.1453446