TY - GEN
T1 - Numerical simulation of SF6 ARC characteristics influenced by electrode erosion
AU - Zhang, J.
AU - Jia, S.
AU - Li, X.
AU - Shi, Z.
AU - Wang, L.
PY - 2008
Y1 - 2008
N2 - During the interruption process of SF6 circuit breaker, electrode erosion will occur inevitably, which leads to the contamination of pure SF6 and the alteration of arc characteristics. In the paper, to one puffer type circuit breaker, simulation studies are focused on the application of Spalart-Allmaras model for turbulence and species transport model for metallic vapour diffusion. In addition, the electrode erosion rate is estimated by the energy balance processes at the arc and electrode interface. It demonstrates that the metallic vapour has cooling effects especially at the region close to upstream electrode, and the arc voltage is less sensitive to electrode erosion at lower current.
AB - During the interruption process of SF6 circuit breaker, electrode erosion will occur inevitably, which leads to the contamination of pure SF6 and the alteration of arc characteristics. In the paper, to one puffer type circuit breaker, simulation studies are focused on the application of Spalart-Allmaras model for turbulence and species transport model for metallic vapour diffusion. In addition, the electrode erosion rate is estimated by the energy balance processes at the arc and electrode interface. It demonstrates that the metallic vapour has cooling effects especially at the region close to upstream electrode, and the arc voltage is less sensitive to electrode erosion at lower current.
UR - https://www.scopus.com/pages/publications/77949414691
M3 - 会议稿件
AN - SCOPUS:77949414691
SN - 9780955805202
T3 - GD 2008 - 17th International Conference on Gas Discharges and Their Applications
SP - 205
EP - 208
BT - GD 2008 - 17th International Conference on Gas Discharges and Their Applications
T2 - 17th International Conference on Gas Discharges and Their Applications, GD 2008
Y2 - 7 September 2008 through 12 September 2008
ER -