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Partial Discharge Behavior of a Newly Developed Enamel Insulation at Various Voltage Rise Times

Anh Hoang (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Thomas Hammarström (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Tord Bengtsson (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Yuriy Serdyuk (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Stanislaw Gubanski (Institutionen för material- och tillverkningsteknik, Högspänningsteknik)
Proceedings of 2014 International Symposium on Electrical Insulating Materials (ISEIM 2014), June 1-5, 2014, Niigata City, Japan p. 241-244. (2014)
[Konferensbidrag, refereegranskat]

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.

Nyckelord: partial discharges, enameled wire, twisted pairs, PD exposure

Article number 6870763

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Denna post skapades 2014-06-19. Senast ändrad 2017-10-03.
CPL Pubid: 199425


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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Högspänningsteknik (2005-2017)



Chalmers infrastruktur

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