Measurement of partial discharges at rapidly changing voltages

This work presents a measuring system for PDs at repetitive voltages with short rise times, based on a coupling device adapted for this kind of voltages and a method for removing contributions from the applied voltage. The potential of the system has been demonstrated through measurements of PDs aro...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2008-06, Vol.15 (3), p.823-831
Main Authors: Lindell, E., Bengtsson, T., Blennow, J., Gubanski, S.M.
Format: Article
Language:English
Subjects:
Circuits
Devices
Dielectrics
Electric potential
Electrical insulation
Filters
Frequency measurement
IEC standards
Insulation
Joining
Needles
Partial discharges
Pulse measurements
Pulse width modulation
Time measurement
Voltage
Waveforms
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Description
Summary:This work presents a measuring system for PDs at repetitive voltages with short rise times, based on a coupling device adapted for this kind of voltages and a method for removing contributions from the applied voltage. The potential of the system has been demonstrated through measurements of PDs around a needle in air at voltages of 5.5 kV - 9.5 kV with rise times down to 10 mus. The observations obtained with this PD source prove that the measuring technique described enables detailed studies of PD properties under repetitive rapidly changing voltage waveforms in the investigated range of voltages and rise times.
ISSN:1070-9878
1558-4135
1558-4135
DOI:10.1109/TDEI.2008.4543120