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

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis on the Operation Characteristics and Protection Coordination between the Current Ratio Differential Relay for Line Protection and the Trigger-type SFCL in the Power Transmission System

송전급 초전도한류기의 적용에 따른 선로보호용 비율전류차동계전기의 동작특성 및 보호협조 분석

  • Cho, Yong-Sun (Dept of Electrical Engineering, Soong-sil University) ;
  • Kim, Jin-Seok (Dept of Electrical Engineering, Soong-sil University) ;
  • Lim, Sung-Hun (Dept of Electrical Engineering, Soong-sil University) ;
  • Kim, Jae-Chul (Dept of Electrical Engineering, Soong-sil University)
  • Received : 2013.03.23
  • Accepted : 2013.06.07
  • Published : 2013.07.01
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Abstract

The fault current of the power transmission system is greater than that of the power distribution system. Therefore, the introduction of superconducting fault current limiter (SFCL) is more needed to reduce the increased fault current. The trigger-type SFCL consists of the high-temperature superconducting element (HTSC), the current limiting reactor (CLR) and the circuit breaker (CB). The trigger-type SFCL can be used to supplement the disadvantages of the resistive-type SFCL. The operation characteristics of the current ratio differential relay which is usually applied to the protection device of the power transmission system are expected to be affected under fault conditions and the applicability of the trigger-type SFCL. In this paper, we analyzed the operating characteristics, by the fault conditions, between the current ratio differential relay for line protection and the trigger-type SFCL in the power transmission system through the PSCAD/EMTDC simulation.

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References

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