Spontaneous Partial Discharge Oscillations Studied by Excess Current
Paper in proceedings, 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

Author

Xiangdong Xu

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Tord Bengtsson

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Jörgen Blennow

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

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

0084-9162 (ISSN)

55-59

Driving Forces

Sustainable development

Subject Categories

Materials Engineering

Electrical Engineering, Electronic Engineering, Information Engineering

Areas of Advance

Energy

Materials Science

DOI

10.1109/CEIDP.2015.7352154

ISBN

978-1-4673-7497-2

More information

Created

10/7/2017