Design of HTS Transmission Cable With Cu Stabilizer

Sim, Kideok; Cho, J.W.; Bae, Joon-Han; Kim, H.J.; Kim, S.H.; Seong, K.C.; Kim, J.H.; Jang, Hye Sook; Lee, C.Y.

doi:10.1109/tasc.2005.864318

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…If the chemical reaction were dominant in terms of yielding metal oxide, rapid growth would doubtlessly cause disorder in the structure formed, because such rapid growth would never permit the repairing system discussed above. With this scheme, a perfectly oriented metal oxide layer would be obtainable on even a 500 m long metal tape with high reproducibility [5,14]. As discussed above, by choosing the process we provide the minimum energy to grow only a cube-on-cube structure with high reproducibility.…”

Section: Direct Observation Of Cars By Haadfmentioning

confidence: 99%

Clustered atom-replaced structure in single-crystal-like metal oxide

Araki¹,

Hayashi²,

Ishii³

et al. 2018

Supercond. Sci. Technol.

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By means of metal organic deposition using trifluoroacetates (TFA-MOD), we replaced and localized two or more atoms in a single-crystalline structure having almost perfect orientation. Thus, we created a new functional structure, namely, clustered atom-replaced structure (CARS), having singlecrystal-like metal oxide. We replaced metals in the oxide with Sm and Lu and localized them. Energy dispersive x-ray spectroscopy results, where the Sm signal increases with the Lu signal in the singlecrystalline structure, confirm evidence of CARS. We also form other CARS with three additional metals, including Pr. The valence number of Pr might change from 3+ to approximately 4+, thereby reducing the Pr-Ba distance. We directly observed the structure by a high-angle annular dark-field image, which provided further evidence of CARS. The key to establishing CARS is an equilibrium chemical reaction and a combination of additional larger and smaller unit cells to matrix cells. We made a new functional metal oxide with CARS and expect to realize CARS in other metal oxide structures in the future by using the above-mentioned process.

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Section: Direct Observation Of Cars By Haadfmentioning

confidence: 99%

Clustered atom-replaced structure in single-crystal-like metal oxide

Araki¹,

Hayashi²,

Ishii³

et al. 2018

Supercond. Sci. Technol.

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“…In Korea, the development of HTS power cables has mainly been being carried out by KERI and LS Cable Co. under the DAPAS program. The goal of the first phase was to develop a three‐phase 50 MVA/22.9 kV class 30 m length HTS power cable, 1 but in the second phase, KERI and LS Cable Co. developed and established a 100 m length HTS power cable 2–5 with a capacity of 50 MVA/22.9 kV in the Gochang power system test center administrated by Korea Electric Power Corporation. Figure 1 shows the picture of the one‐side terminal part of the 100 m length HTS power cable.…”

Section: Hts Power Cablementioning

confidence: 99%

Recent Activities of HTS Power Application in Korea

Park

Ryu

2007

Int J Applied Ceramic Tech

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From April 2007, DAPAS (Development of the Advanced Power system by Applied Superconductivity technologies), which is a 10‐year‐long program, entered the final phase with 4 years. For the last 7 years, the significant achievement of DAPAS is that a 10 m long and 100 A critical current‐coated conductor and core technologies of distribution line voltage class HTS power systems including cables, transformers, fault current limiters (FCLs), and motors have been developed. In particular, a 100 m length HTS power cable was installed and is operating well in the Gochang power system test center. Two different types of FCL were successfully developed and demonstrated very good results of fault current test with 22.9 kV distribution line voltage class. In the case of the HTS motor, it was well operated too on connecting to 2 units of a 1.1 MVA conventional induction motor each as a load. In addition, the coated conductor project team achieved a 30 m length and 185 A critical current‐coated conductor tape after 6 months since the hardware was set up.

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“…Consequently, the superconducting cable itself could limit the fault current to a certain band to realize a stable fault-current-limiting-type Manuscript superconducting cable. [2]- [5] In this study, three different superconducting thin-film wires with a critical temperature of 90 K (a wire with a copper stabilization layer [6], [7], another with a stainless steel stabilization layer, and a third without a stabilization layer) were connected parallel to one another with stranded copper wires (replacing the cable former) as the experimental samples. The fault current amplitude was set at 45 V rms /1,572 A peak , considering the voltage grades of the superconducting wires and the parallel connections of the stranded copper wires and the superconducting wires.…”

Section: Introductionmentioning

confidence: 99%

Study on Verification for the Realizing Possibility of the Fault-Current-Limiting-Type HTS Cable Using Resistance Relation With Cable Former and Superconducting Wire

Kim

Han

et al. 2015

IEEE Trans. Appl. Supercond.

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In this study, we reduced the cable former (hereinafter, "copper wire") diameter to verify the possibility of realizing the fault-current-limiting-type superconducting cable while maintaining the current-limiting ratio and the cable stability. Current application properties in the parallel connection of the copper stranded wire were analyzed with the superconducting wire with a different degree of non-resistance. Items that were verified included the change in the total current (the limited fault current), the voltage characteristics, and the results of the thermal stability evaluation through a resistance analysis. The verification targets included the combination of the superconducting wire without a stabilization layer and the copper wire (0.75 SQ and 1 SQ), the combination of the superconducting wire with a stainless stabilization layer and the copper wire (0.75 SQ and 1 SQ), and the combination of the superconducting wire with a copper stabilization layer and the copper wire (0.75 SQ and 1 SQ). Result showed that with the increasing degree of the superconducting wire non-resistance and the decreasing copper wire diameter, the limiting performance of the total current improved, but thermal stability was not stabilized. In addition, the superconducting wire volume was shown to have affected thermal stability.

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Design of HTS Transmission Cable With Cu Stabilizer

Cited by 13 publications

References 4 publications

Clustered atom-replaced structure in single-crystal-like metal oxide

Clustered atom-replaced structure in single-crystal-like metal oxide

Recent Activities of HTS Power Application in Korea

Study on Verification for the Realizing Possibility of the Fault-Current-Limiting-Type HTS Cable Using Resistance Relation With Cable Former and Superconducting Wire

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