期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 51, 期 12, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/aaae7c
关键词
positive streamer; nonthermal plasma; drift diffusion model; partial discharge
资金
- EPSRC Doctoral Training Centre grant [EP/G03690X/1]
In this paper partial discharge (PD) is investigated inside a spherical air filled void at atmospheric pressure using a drift diffusion model. Discharge dynamics consisted of an electron avalanche transitioning into positive streamer, in agreement with earlier work on dielectric barrier discharges. Different model configurations were utilised to test many of the concepts employed in semi-analytical PD activity models, which use simplistic descriptions of the discharge dynamics. The results showed that many of these concepts may be erroneous, with significant discrepancies between the canonical reasoning and the simulation results. For example, the residual electric field, the electric field after a discharge, is significantly lower than the estimates used by classical PD activity models in the literature.
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