The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
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Temperature Characteristic Analysis according to Variation of Properties of Transformer Insulating Oil

변압기 절연유의 물성치 변화에 따른 온도특성해석

  • Kim, Ji-Ho (Enertech Co., Ltd.) ;
  • Rhee, Wook (Dept. of Electrical and Information System Engineering, Daejin University)
  • Received : 2014.11.17
  • Accepted : 2014.11.21
  • Published : 2014.12.01
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Abstract

In this paper, the temperature distribution according to the property change of the insulating oil of the power transformer and max temperature were predicted through the ductility interpretation which heat-flow is coupled. By using CFD (Computation Fluid Dynamics) for the interpretation, the temperature distribution of 154kV the class single phase power transformer was predicted. The power loss causing the temperature rise of the transformer was changed to the heat source and we used as the input value for the heat-flow analysis. The temperature distribution was predicted according to the change of the density, specific heat, thermal conductivity and viscosity, that is the ingredient having an effect on the temperature rise of the transformer oil. The mineral oil of 4 kinds used in domestic and international based on the interpreted result was selected and the temperature distribution according to each load and Hot Spot temperature was predicted.

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References

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