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

Volume

41

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1636

Lastpage

1639

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.846117

Filename

1430928