Title :
Research on insulation design of 22.9-kV high-Tc Superconducting cable in Korea
Author :
Kim, Young-Seok ; Kwag, Dong-Soon ; Kim, Hae-Jong ; Cho, Jeon-Wook ; Seong, Ki-Chul ; Kim, Sang-Hyun
Author_Institution :
Electr. Safety Res. Inst., Korea Electr. Safety Corp., Gapyeong-Gun, South Korea
fDate :
4/1/2005 12:00:00 AM
Abstract :
The electrical insulation design is important for high-Tc superconducting (HTS) cable because the cable is operated in a medium voltage environment. For the insulation design of HTS cable, it is necessary to investigate the ac, impulse breakdown, and partial discharge inception stress of a liquid nitrogen/polypropylene laminated paper composite insulation system. These results were used to design the electrical insulation of 22.9-kV-class HTS cable in Korea and cable was manufactured. A manufactured mini-model HTS cable was evaluated for ac withstand voltage, impulse withstand voltage, breakdown and dielectric tangent loss (tanδ). From these tests, the cable has satisfied the standard technical specification of KEPCO in Korea. The breakdown voltage was 110 kV.
Keywords :
composite insulating materials; high-temperature superconductors; paper; partial discharges; power cable insulation; power cable testing; 110 kV; 22.9 kV; Korea; ac withstand voltage; cable testing; composite insulation system; dielectric tangent loss; electrical insulation design; high-temperature superconducting cable; impulse breakdown; impulse withstand voltage; partial discharge inception stress; Breakdown voltage; Cable insulation; Dielectric losses; Dielectrics and electrical insulation; Electric breakdown; High temperature superconductors; Manufacturing; Medium voltage; Partial discharges; Superconducting cables; AC withstand voltage; dielectric tangent loss; high-Tc superconducting (HTS) cable; partial discharge inception stress;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2004.838627
