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Space charge controlled electric field preceding inception of electric tree in XLPE at AC voltage

Y. Zheng ; Yuriy Serdyuk (Institutionen för material- och tillverkningsteknik, Högspänningsteknik) ; Stanislaw Gubanski (Institutionen för material- och tillverkningsteknik, Högspänningsteknik)
Proceedings of the 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, Sydney, Australia, 19-22 July 2015 p. 132-135. (2015)
[Konferensbidrag, refereegranskat]

Electric fields associated with dynamic space charges injected from metallic needle electrode immersed into XLPE sample are analyzed by means of computer simulations. Field distributions in the material are calculated utilizing bipolar charge transport model. It is shown that the accumulated space charge becomes significant with time and affects the electric field distribution in the sample. The obtained magnitudes and profiles of the resulting fields are discussed focusing on possible mechanisms of electric tree inception in the material.

Nyckelord: charge transport, electric field, electric tree, space charge, tree inception



Denna post skapades 2016-05-20. Senast ändrad 2016-08-23.
CPL Pubid: 236765

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Högspänningsteknik

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur