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arXiv · 1804.10473

Simulation model for the propagation of second mode streamers in dielectric liquids using the Townsend--Meek criterion

I. Madshaven·P. -O. Åstrand·O. L. Hestad·S. Ingebrigtsen·M. Unge·O. Hjortstam
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Abstract

A simulation model for second mode positive streamers in dielectric liquids is presented. Initiation and propagation is modeled by an electron-avalanche mechanism and the Townsend--Meek criterion. The electric breakdown is simulated in a point-plane gap, using cyclohexane as a model liquid. Electrons move in a Laplacian electric field arising from the electrodes and streamer structure, and turn into electron avalanches in high-field regions. The Townsend--Meek criterion determines when an avalanche is regarded as a part of the streamer structure. The results show that an avalanche-driven breakdown is possible, however, the inception voltage is relatively high. Parameter variations are included to investigate how the parameter values affect the model.

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I. Madshaven, P. -O. Åstrand, O. L. Hestad, S. Ingebrigtsen, M. Unge, O. Hjortstam. 2020-07-25. Simulation model for the propagation of second mode streamers in dielectric liquids using the Townsend--Meek criterion. https://doi.org/10.1088/2399-6528%2Faae0e6

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