The simulation of dendrite growth and partial discharges in epoxy resin |
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Authors: | M D Noskov A S Malinovski M Sack A J Schwab |
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Institution: | (1) Tomsk Polytechnical University, pr. Lenina 30, Tomsk, 634050, Russia;(2) University of Karlsruhe, D-76128 Karlsruhe, Germany |
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Abstract: | A self-consistent model of the development of dendrites and partial discharges in a dielectric solid under a variable voltage
is suggested. Dendrites originate at sites with the enhanced local field strength and also where the dielectric is broken
down under the action of partial discharges. The numerical simulation is used to quantitatively describe the space-time dynamics
of the dendrites and partial discharges in epoxy resin for the tip-plane electrode configuration. The simulated data are compared
with electrical measurements of partial discharges and with optical images of dendrite growth under the same conditions. |
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