A Simplified Model of Coaxial, Multilayer High-Temperature Superconducting Power Cables with Cu Formers for Transient Studies

Bypassing transient current through copper (Cu) stabilizer layers reduces heat generation and temperature rise of high-temperature superconducting (HTS) conductors, which could protect HTS cables from burning out during transient conditions. The Cu layer connected in parallel with HTS tape layers im...

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Published inEnergies (Basel) Vol. 12; no. 8; p. 1514
Main Authors Thai-Thanh Nguyen, Lee, Woon-Gyu, Seok-Ju, Lee, Park, Minwon, Hak-Man, Kim, DuYean Won, Yoo, Jaeun, Yang, Hyung Suk
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 22.04.2019
Subjects
Cables
coaxial multilayer HTS cable
Design
Electrical engineering
Electricity distribution
Energy dissipation
Heat generation
High temperature
high-temperature superconducting (HTS) cable
HTS cable with Cu-former layer
Libraries
Multilayers
Parallel connected
Power cables
simplified HTS cable model
Specific heat
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Summary:Bypassing transient current through copper (Cu) stabilizer layers reduces heat generation and temperature rise of high-temperature superconducting (HTS) conductors, which could protect HTS cables from burning out during transient conditions. The Cu layer connected in parallel with HTS tape layers impacts current distribution among layers and variations of phase resistance in either steady-state or transient conditions. Modeling the multilayer HTS power cable is important for transient studies. However, existing models of HTS power cables have only proposed HTS cables without the use of a Cu-former layer. To overcome this problem, the authors proposed a multilayer HTS power cable model that used a Cu-former layer in each phase for transient study. It was observed that resistance of the HTS conductor increased significantly in the transient state due to a quenching phenomenon, which made the transient current mainly flow into the Cu-former layers. Since resistance of the Cu-former layer has a significant impact on the transient current, detailed modeling of the Cu-former layer is described in this study. The feasibility of the developed HTS cable model is evaluated in the PSCAD/EMTDC program.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12081514