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Temperature Rise Test and Temperature Distribution Analysis of Pole Mount Mold Transformer with One-body Molding

일체형 주상용 몰드 변압기의 온도분포 및 특성 비교

  • 조한구 (한국전기연구원 재료응용연구단) ;
  • 이운용 (한국전기연구원 재료응용연구단) ;
  • 강택수 (한국전기연구원 재료응용연구단) ;
  • 최인혁 (한전전력연구원 송전기술연구그룹)
  • Published : 2006.12.01

Abstract

The mold transformers have been widely used in underground substations of large building and have some advantages when compared with oil-transformer. Those advantages are low fire risk, environmental compatibility, compact size and high reliability. The mold transformer is generally known to have cooling duct between low voltage and high voltage coil. To achieve better compact structure and low loss, mold transformers made by one body molding method has been developed. Nevertheless, such kinds of transformer need better cooling method because heat radiation between each winding is still of problem. The life of transformer is significantly dependent on the thermal behavior in windings. Many designers have calculated temperature distribution in transformers and hot spot point by finite element method(FEM) to analyze winding temperature rise. In this paper, the temperature distribution analysis of 100 kVA pole mold transformer for power distribution were investigated by FEM program and the thermal analysis results were compared with temperature rise test.

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