TY - GEN
T1 - Effect of different venting conditions on the interruption performance of arc chamber
AU - Dai, Ruicheng
AU - Chen, Degui
AU - Li, Xingwen
AU - Sun, Haitao
AU - Xie, Ensheng
PY - 2009
Y1 - 2009
N2 - Gas flow in arc quenching chamber has an important effect on the interruption capability of low voltage circuit breakers. In this paper, based on a simplified model of arc chamber with a single break, which can be opened by the electrodynamics repulsion force automatically, the effect of different vent conditions including middle venting and side venting on the interruption performance is investigated. First, the effect of the different size of side vent type on the chamber pressure, and interruption capability were studied experimentally. It demonstrates that the smaller vent size is, the higher pressure and better the interruption performance will be, but when the vent size smaller than a certain proportion, the arc will re-ignite and when the vent size larger than a certain proportion, the arc will also re-ignite. Experiments are carried out to compare the different performance in the interruption process between middle vent to be conventional vent type and side vent type. In addition, according to the experimental model, a 3-D magnetohydrodynamic model was developed by adapting and modified the commercial computational fluid dynamics software FLUENT. The simulation results show the same trend in arc motion as explained in the experimental conclusions in theory.
AB - Gas flow in arc quenching chamber has an important effect on the interruption capability of low voltage circuit breakers. In this paper, based on a simplified model of arc chamber with a single break, which can be opened by the electrodynamics repulsion force automatically, the effect of different vent conditions including middle venting and side venting on the interruption performance is investigated. First, the effect of the different size of side vent type on the chamber pressure, and interruption capability were studied experimentally. It demonstrates that the smaller vent size is, the higher pressure and better the interruption performance will be, but when the vent size smaller than a certain proportion, the arc will re-ignite and when the vent size larger than a certain proportion, the arc will also re-ignite. Experiments are carried out to compare the different performance in the interruption process between middle vent to be conventional vent type and side vent type. In addition, according to the experimental model, a 3-D magnetohydrodynamic model was developed by adapting and modified the commercial computational fluid dynamics software FLUENT. The simulation results show the same trend in arc motion as explained in the experimental conclusions in theory.
KW - Arc chamber
KW - Low voltage swiching devices
KW - MHD model
KW - Vent structure
UR - https://www.scopus.com/pages/publications/73649083336
U2 - 10.1109/HOLM.2009.5284388
DO - 10.1109/HOLM.2009.5284388
M3 - 会议稿件
AN - SCOPUS:73649083336
SN - 9781424436132
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
SP - 273
EP - 277
BT - Proceedings of the 55th IEEE Holm Conference on Electrical Contacts, HOLM 2009
T2 - 55th IEEE Holm Conference on Electrical Contacts, HOLM 2009
Y2 - 14 September 2009 through 16 September 2009
ER -