Superconducting Fault Current Limiter Placement for Power System Protection Using the Minimax Regret Criterion

Hyung Chul Jo, Sung Kwan Joo

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


In a power grid, the distributed generations (DGs) are not generally controlled by the system operator. Fault current levels in the power grid may change because of unpredictable changes in the status of noncontrollable DGs. These changes in the fault current can have an impact on the relay coordination. In this paper, the uncertainty associated with the connection status of DGs is reflected in the relay coordination. Superconducting fault current limiter (SFCL) placement can be effective for reducing the fault current while eliminating misoperation of the relays caused by DGs. However, an SFCL may also have a negative impact on the operation of the relays. An effective SFCL placement method is needed because of the high cost of the SFCL and the impact on the power system protection. In this paper, an SFCL placement method based on the minimax regret criterion is proposed for power system protection considering the uncertainty of the DGs.

Original languageEnglish
Article number7056437
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2015 Jun 1


  • Distributed generation (DG)
  • Superconducting
  • fault current
  • fault current limiter (SFCL)
  • power system uncertainty
  • relay coordination

ASJC Scopus subject areas

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


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