Space charge controlled electric field preceeding inception of electric tree in XLPE at ac voltage
Paper i proceeding, 2015

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.

charge transport

electric field

electric tree

tree inception

space charge

Författare

Yuesheng Zheng

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Proceedings of International Conference on Properties and Applications of Dielectric Materials

paper SC1-7

Styrkeområden

Energi

Ämneskategorier

Annan elektroteknik och elektronik

ISBN

978-1-4799-8902-7