Monitoring method for an unbalanced three-phase HTS cable system via time-frequency domain reflectometry

Geon Seok Lee, Gyeong Hwan Ji, Gu Young Kwon, Su Sik Bang, Yeong Ho Lee, Song Ho Sohn, Kijun Park, Yong June Shin

Research output: Contribution to journalArticle

5 Citations (Scopus)


In this paper, we propose a new time-frequency based analysis method that monitors the state of the high temperature superconducting (HTS) cable system in a real-time manner and detects the current imbalance of HTS cable system. The new time-frequency-based method utilizes the cross Wigner-Ville distribution to analyze the time-frequency localized phase difference of the reflected signal, which varies depending on the insulation characteristics of the HTS cable system. Also, a real-world AC 22.9 kV 50 MVA HTS cable system and a current source are used to validate the performance of the new monitoring method in order to detect current imbalance phenomenon.

Original languageEnglish
Article number8302531
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - 2018 Jun


All Science Journal Classification (ASJC) codes

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

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