Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2001.04a
- /
- Pages.113-115
- /
- 2001
Prediction of Temperature Rise in Power Appratus
초고압 전력기기의 온도상승 예측
- Kim, S.W. (Dept of Elec. Eng, Dong-A Univ.) ;
- Park, J.H. (Dept of Elec. Eng, Dong-A Univ.) ;
-
Hahn, S.C.
(Dept of Elec. Eng, Dong-A Univ.) ;
- Lee, B.Y. (KERI) ;
-
Park, K.Y.
(KERI) ;
- Song, W.P. ;
-
Kim, J.B.
- 김승욱 (동아대학교 전기공학과) ;
- 박정홍 (동아대학교 전기공학과) ;
-
한성진
(동아대학교 전기공학과) ;
- 이병윤 (한국전기연구소) ;
-
박경엽
(한국전기연구소) ;
- 송원표 ((주)효성) ;
-
김정배
((주)효성)
- Published : 2001.04.19
Abstract
In order to design the power appratus such ac bus bar, the current carrying ampacity should be determined, Since it is limited by maxium operating temperature, it is very important to predict temperature-rise on it. The main causes to raise temperature are joule's loss in the current carrying conductor and induced circulating and eddy current in the tank. The heat transfer is divided into convection and radiation on boundary, determining convection heat transfer coefficient is not easy. This paper propose a new technique that can be used to estimate the temperature rise in the extra high voltage bus bar. The heat transfer coefficient is analytically calculated by applying Nusselt Number depending on temperature as well as model geometry. The analytic method which use heat transfer coefficient is coupled with finite element method. The temperature distribution in the bus bar by the proposed method shows good agreement with experimental data.
Keywords