Abstract
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 language | English |
|---|---|
| Article number | 8302531 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 28 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2018 Jun |
Bibliographical note
Funding Information:Manuscript received September 14, 2017; accepted February 14, 2018. Date of publication February 27, 2018; date of current version March 19, 2018. This work was supported by the National Research Foundation of Korea grant funded by the Ministry of Science, ICT and Future Planning, #NRF-2017R1A2A1A05001022 and also by Korea Electric Power Corporation Research Institute. (Corresponding author: Yong-June Shin.) G. S. Lee, G. H. Ji, G.-Y. Kwon, S. S. Bang, Y. H. Lee, and Y.-J. Shin are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: yongjune@yonsei.ac.kr).
Publisher Copyright:
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering