Collision effects on sheath development after interrupting a vacuum arc
Release Time:2025-04-30
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- Date:
- 2025-04-30
- Title of Paper:
- Collision effects on sheath development after interrupting a vacuum arc
- Journal:
- 1st Electric Power Equipment-switching technology
- Summary:
- Sheath development dominates the initial stage of dielectric recovery process after interrupting a vacuum arc. The objective of this paper is to simulate sheath development after interrupting a vacuum arc considering collision between ions and background neutral metal vapor. We adopted Particle in Cell-Monte Carlo Collisions (PIC-MCC) method and a one-dimensional sheath model was developed. We assumed a Maxwellian velocity distribution for the neutral metal vapor, ions and electrons at temperature 0.2eV, 2eV and 3.5eV at the start of recovery, respectively. The results show that a higher density of background neutral metal vapor tends to increase the completion time of sheath development. Moreover, the completion time of sheath development becomes faster as the rising rate of a TRV increases, and the completion time of sheath development becomes slower as initial ion density increases.
- Co-author:
- Zhenxing Wang, Yingsan Geng, Zhiyuan Liu
- Volume:
- VOL.1 NO.1
- Page Number:
- 27-30
- Translation or Not:
- No
- Date of Publication:
- 2011-09-26