Title :
Temperature rise prediction of EHV GIS bus bar by coupled magnetothermal finite element method
Author :
Kim, Joong Kyoung ; Hahn, Sung Chin ; Park, Kyong Yop ; Kim, Hong Kyu ; Oh, Yeon Ho
Author_Institution :
Dept. of Electr. Eng., Dong-A Univ., Busan, South Korea
fDate :
5/1/2005 12:00:00 AM
Abstract :
This paper presents a new magnetothermal finite element analysis for predicting the temperature rise of the extra-high voltage gas insulated switchgear bus bar. The power losses of a bus bar calculated by the magnetic field analysis are used as the input data to predict the temperature rise for the thermal analysis. The heat-transfer coefficients on the boundaries are analytically calculated by applying the Nusselt number considering material constant and model geometry for the natural convection. The temperature distribution in a bus bar by coupled magnetothermal finite element analysis shows good agreement with the experimental data.
Keywords :
busbars; finite element analysis; magnetocaloric effects; power apparatus; thermal analysis; Nusselt number; coupled magnetothermal analysis; current-carrying capacity; extra-high voltage gas insulated switchgear bus bar; finite element analysis; finite element method; heat transfer coefficients; magnetic field analysis; material constant; model geometry; natural convection; power losses; temperature distribution; temperature rise prediction; thermal analysis; Couplings; Finite element methods; Gas insulation; Geographic Information Systems; Magnetic analysis; Magnetic fields; Magnetic materials; Switchgear; Temperature; Voltage; Coupled magnetothermal analysis; EHV GIS bus bar; current-carrying capacity; heat-transfer coefficient;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.846117
