Protective relay tests of hybrid SFCLs in a Korean distribution power system using RTDS

Seung Ryul Lee, Jae Young Yoon, Jae Ho Kim, Byeongmo Yang, Byongjun Lee

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10 Citations (Scopus)


A study on protective relay systems is one of the important technical issues concerning power systems that use Superconducting Fault Current Limiters (SFCL). We used a Real Time Digital Simulator (RTDS) in order to study the true interaction of the protection system with the power systems. RTDS modeling of SFCL is necessary to obtain detailed protective relay tests. In this paper, we developed an analysis model using RTDS in order to study the transient behavior of a 22.9 kV hybrid SFCL and performed closed-loop testing on a protective relay in a distribution power system using the developed SFCL model. The model uses an operation mechanism of the real SFCL. The 22.9 kV hybrid SFCL is under development by LSIS (LS Industrial Systems Co., Ltd.) and KEPRI (Korea Electric Power Research Institute) in Korea. The parameters of the model are based on the test data from the real SFCL. Power system planners and operators will be able to solve the problems that are expected in the application of SFCLs to power systems by using these protective relay testing results.

Original languageEnglish
Article number5624598
Pages (from-to)2188-2192
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number3 PART 2
Publication statusPublished - 2011 Jun

Bibliographical note

Funding Information:
Manuscript received August 01, 2010; accepted September 28, 2010. First published November 09, 2010; current version published May 27, 2011. This work was supported by the Power Generation & Electricity Delivery program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy. Seung Ryul Lee and Jae-young Yoon are with Korea Electrotechnology Research Institute (KERI), Uiwang, South Korea (e-mail:; Jae-ho Kim is with the Center for Advanced Power Systems at Florida State University, Tallahassee, FL 32310 USA (e-mail: Byeongmo Yang is with Korea Electric Power Research Institute (KEPRI), Daejeon, South Korea ( Byongjun Lee is with Korea University, Seoul, South Korea (e-mail: Color versions of one or more of the figures in this paper are available online at Digital Object Identifier 10.1109/TASC.2010.2084059


  • HTS
  • Hybrid SFCL
  • Protective relay
  • RTDS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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