Partial Discharge Behavior of a Newly Developed Enamel Insulation at Various Voltage Rise Times
Paper i proceeding, 2014

Investigations of partial discharge (PD) characteristics in twisted pairs are presented. The test objects were made of conventional and chromium oxide filled enameled wires and were exposed to pulse width modulated (PWM) voltages of different rise times. To compare the performance of each insulation system, measurements of both PD inception and extinction voltages were conducted. Additionally, the number of PDs per cycle and their amplitude at different voltage levels were determined. Experimental results showed that the total PD exposure was considerably reduced for the chromium oxide filled enamel insulation as compared to that of the conventional material at the shortest voltage rise time. However, for filtered PWM waveforms with relatively longer rise times this difference became less prominent. The analysis of the results indicated that the observed effects are determined by the presence of chromium oxide filler and its electrical properties.

enameled wire

partial discharges

twisted pairs

PD exposure

Författare

Tuan Anh Hoang

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Thomas Hammarström

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Tord Bengtsson

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Proceedings of 2014 International Symposium on Electrical Insulating Materials (ISEIM 2014), June 1-5, 2014, Niigata City, Japan

241-244

Styrkeområden

Energi

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/ISEIM.2014.6870763

ISBN

978-4-88686-086-6