Insulating Design and Test of 22.9kV Class Mini-Model Transformer Considering AC Loss

AC Loss를 고려한 22.9kV급 Mini-Model 변압기의 절연 설계 및 시험

  • 백승명 ;
  • 정종만 ;
  • 곽동순 ;
  • 김해종 ;
  • 석복렬 ;
  • 김상현
  • Published : 2004.08.01

Abstract

This paper presents experimental data from model windings with different arrangement of coil in order to provide information to design a 22.9kV class HTS transformer. Before experiment, the composite insulation of two different type of HTS transformers are investigated. The first basic of investigation is a breakdown characteristic of liquid nitrogen and flashover characteristic on the GFRP surface under ac and impulse, The second investigation is insulation design, manufacture and test of model windings. These include a AC withstand voltage test of 50 kV rms and a lighting impulse test of 150 kV at peak.

Keywords

Insulation Design;HTS transformer;Breakdown;Withstand voltage

References

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