Spontaneous Partial Discharge Oscillations Studied by Excess Current
Paper i proceeding, 2015

This work discusses appearance of spontaneous partial discharge (PD) oscillations in specimen containing dielectrically isolated gas cavity as well as a measurement technique that allows to study such PD activity by quantifying the resulting excess current, which includes both fast PD current pulses and relatively slower charge movements. This is achieved through a comparison of currents measured with and without PDs by simultaneously performed conventional pulse PD detection and dielectric response (DR) measurement from which the excess current wave shape is deduced. The obtained results reveal appearance of an additional “slow” current contribution and this paper discusses how this current is generated and why it may influence the PD activity.

Voltage measurement

Pulse measurements

Cavity resonators

Current measurement

Dielectric measurement

Oscillators

Partial discharges

Författare

Xiangdong Xu

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Tord Bengtsson

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Jörgen Blennow

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015, Ann Arbor, United States, 18-21 October 2015

0084-9162 (ISSN)

55-59

Drivkrafter

Hållbar utveckling

Ämneskategorier

Materialteknik

Elektroteknik och elektronik

Styrkeområden

Energi

Materialvetenskap

DOI

10.1109/CEIDP.2015.7352154

ISBN

978-1-4673-7497-2

Mer information

Skapat

2017-10-07