Problem Analysis by Iron Core Structure of the Transformer on Asymmetric three Phase lines and Prevention Measures

비대칭 3상 선로에서 변압기의 철심구조별 문제점 분석 및 방지대책

  • 신동열 (한국전력 전력연구원) ;
  • 윤동현 (충남대학교 전기공학과) ;
  • 차한주 (충남대학교 전기정보통신공학부)
  • Received : 2012.07.18
  • Accepted : 2012.09.25
  • Published : 2012.10.01


The study analyzed problems by iron core structure of the three phased transformer on asymmetric three phase lines, which included line disconnections, ground faults, COS OFF, and unbalanced loads on the power distribution system. In particular, by analyzing PT combustion cases within the MOF, the study was able to analyze the combustion cause of the core-type transformer and its effect on the system, conduct simulations and practice demonstrations on the characteristics for each iron core structure of the three phase transformer using PSCAD/EMTDC, and suggest measures to prevent the combustion of the core-type transformer.


Core type transformer;Shell type transformer;Single phase bank type transformer;Iron core structure;Connection method;Power distribution system


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