The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on DC Interruption Technology using a Transformer Type Superconducting Fault Current Limiter to Improve DC Grid Stability

DC 그리드 안정성 향상을 위해 변압기형 초전도 한류기가 적용된 직류 차단 기술에 관한 연구

  • Hwang, Seon-Ho (Dept. of Electrical Engineering, College of Engineering, Chosun University) ;
  • Choi, Hye-won (Dept. of Electrical Engineering, College of Engineering, Chosun University) ;
  • Jeong, In-Sung (Dept. of Electrical Engineering, College of Engineering, Chosun University) ;
  • Choi, Hyo-Sang (Dept. of Electrical Engineering, College of Engineering, Chosun University)
  • Received : 2018.03.02
  • Accepted : 2018.03.30
  • Published : 2018.04.01
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Abstract

Interruption system with the transformer type superconducting fault current limiter(TSFCL) is proposed in this paper. The interruption system with a TSFCL is a technology that it maximizes the interruption function of a mechanical DC circuit breaker using a transformer and a superconducting fault current limiter. By a TSFCL, the system limits the fault current till the breakable current range in the fault state. Therefore, the fault current could be cut off by a mechanical DC circuit breaker. The Interruption system with a TSFCL were designed using PSCAD/EMTDC. In addition, the Interruption system with a TSFCL was applied to the DC test circuit to analyze characteristics of a current-limiting and a interruption operation. The simulation results showed that the Interruption system with a TSFCL interrupted the fault current in a stable when a fault occurred. Also, The current-limiting rate of the Interruption system with a TSFCL was approximately 69.55%, and the interruption time was less than 8 ms.

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References

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