TY - GEN
T1 - Application of computational fluid dynamics to predict the temperature-rise of low voltage switchgear compartment
AU - Qu, Jianyu
AU - Chong, Feng
AU - Wu, Gang
AU - Li, Xingwen
AU - Wang, Qian
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/2/3
Y1 - 2015/2/3
N2 - Low voltage switchgear compartments are widely used in power distribution networks, and the temperature-rise is strictly limited by IEC 60439-1. Considering the contact resistance, eddy current and thermal flow, an electromagnetic-thermal-fluid coupled model is developed to predict the temperature-rise of a low voltage switchgear compartment. The circuit breaker in the compartment is simplified into three flat conductors surrounded by a solid cuboid, and the proper material properties of the equivalent model are calculated. For verification of the used method, the temperature-rise tests under 500A are carried out. It demonstrates that the simulation and measurement results are close, and the maximum error is about 11K. The model can be improved by considering the radiation heat transport inside and outside the compartment, temperature varying material properties, and including more critical details of the structure. It is noted that the upper terminals of the incoming circuit breaker are beyond the temperature-rise limit both in the simulation and experiment. The optimization will be conducted in the future study.
AB - Low voltage switchgear compartments are widely used in power distribution networks, and the temperature-rise is strictly limited by IEC 60439-1. Considering the contact resistance, eddy current and thermal flow, an electromagnetic-thermal-fluid coupled model is developed to predict the temperature-rise of a low voltage switchgear compartment. The circuit breaker in the compartment is simplified into three flat conductors surrounded by a solid cuboid, and the proper material properties of the equivalent model are calculated. For verification of the used method, the temperature-rise tests under 500A are carried out. It demonstrates that the simulation and measurement results are close, and the maximum error is about 11K. The model can be improved by considering the radiation heat transport inside and outside the compartment, temperature varying material properties, and including more critical details of the structure. It is noted that the upper terminals of the incoming circuit breaker are beyond the temperature-rise limit both in the simulation and experiment. The optimization will be conducted in the future study.
KW - CFD
KW - joul heat
KW - low voltage switchgear compartmentn
KW - temperature-rise
KW - thermal flow
UR - https://www.scopus.com/pages/publications/84937878346
U2 - 10.1109/HOLM.2014.7031027
DO - 10.1109/HOLM.2014.7031027
M3 - 会议稿件
AN - SCOPUS:84937878346
T3 - Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
BT - Electrical Contacts - 2014, Proceedings of the 60th IEEE Holm Conference on Electrical Contacts, Holm 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 60th IEEE Holm Conference on Electrical Contacts, Holm 2014
Y2 - 12 October 2014 through 15 October 2014
ER -