Temperature Rise Prediction of GIS Bus Bar Considering Thermal Flow

열유동을 고려한 GIS 모선의 온도상승 예측

  • 김중경 ((주)효성 중공업PG 중공업연구소) ;
  • 오년호 (한국전기연구원) ;
  • 이지연 (동아대 공대 전기공학과) ;
  • 한성진 (동아대 공대 전기공학과)
  • Published : 2009.04.01

Abstract

Many works on the temperature distribution of power apparatus have usually done by coupled magneto-thermal analysis. Such a method can not consider the internal gas or oil flow in the power apparatus such as gas insulated switchgear, GIS bus bar, and power transformer. Moreover it can not show the internal temperature distribution of the power apparatus exactly. This paper proposes a coupled magneto-thermal-flow analysis considering Navier-Stokes equations. The convection heat transfer coefficient is calculated analytically by applying Nusselt number for natural convection and is applied to the boundary condition of proposed method. Temperature distribution of the GIS bus bar model considering thermal flow is obtained by the proposed method and shows good agreement with the experimental data.

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