Design and development of 500m long HTS cable system in the KEPCO power grid, Korea

Sohn, S.H.; Lim, J. H.; Yang, Bin; Lee, S.K.; Jang, Hye Sook; Kim, Y.H.; Yang, Hyung Suk; Kim, D.L.; Kim, H.R.; Yim, Seong-Woo; Won, Young-Jin; Hwang, Si-Dole

doi:10.1016/j.physc.2010.05.163

Cited by 26 publications

(12 citation statements)

References 4 publications

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“…This project is in progress as a government-sponsored research program to develop the HTS cable and operate it in the power grid as earlier reported elsewhere [4]. KEPCO and LSC are jointly participating in this project.…”

Section: Project Descriptionmentioning

confidence: 98%

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Sohn

Yang

Lim

et al. 2012

IEEE Trans. Appl. Supercond.

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Korea Electric Power Corporation (KEPCO) has a great interest on the application of HTS cable to its network to relieve power congestion and enhance the reliability of the power system. Down through the years from 2005 to 2010, the 22.9 kV, 50 MVA HTS cable has been demonstrated by field test, showing affirmative results. With the financial support of Ministry of Knowledge and Economy (MKE), the new project to install and operate the HTS cable in electrical network of Korea was launched in 2008. An HTS cable with the 22.9 kV, 50 MVA, and 410 m length was installed in the KECPO grid in the end of 2010. After the integration of the HTS cable system, the commissioning items of the DC withstand voltage test, DC critical current test, and heat loss measurements were conducted in accordance with the Korean industrial standard, and self-defined specifications. The HTS cable was energized on the 154 kV Icheon substation of KEPCO on August 19th, 2011. The details of the project description, onsite installation, and commissioning tests are presented in this paper.

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Section: Project Descriptionmentioning

confidence: 98%

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Sohn

Yang

Lim

et al. 2012

IEEE Trans. Appl. Supercond.

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“…Compared with inclined substrate deposition and ionbeam-assisted deposition approaches [21][22][23][24], the NiW-RABiTS approach is used in this work, due to its superiority in the preparation of double-sided tape and its simplicity of using low-cost sol-gel process for film deposition [25][26][27][28]. The detailed analyses of gradient La 2−x Gd x Zr 2 O 7 buffer architecture and YBCO films on NiW substrate are presented.…”

Section: Introductionmentioning

confidence: 99%

Highly epitaxial YBa₂Cu₃O_7−δ films grown on gradient La_2−xGd _x Zr₂O₇-buffered NiW-RABiTS using all sol–gel process

Liu¹,

Li²,

Zhao³

et al. 2021

Supercond. Sci. Technol.

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The overall purpose of this work is to develop a reliable and low-cost technique for fabrication of coated conductors (CCs) on the flexible substrates, and to understand the effects of oriented growth and microstructure on the superconducting performance of CCs in-depth. The investigations of gradient La2−x Gd x Zr2O7 buffer architecture and YBa2Cu3O7−δ (YBCO) film on Ni-5at%W rolling-assisted biaxially textured substrate using all sol–gel process are reported. Combining x-ray diffraction and transmission electron microscopy (TEM) analysis, it is revealed that the gradient buffer architecture with increased lattice constant along the direction of film growth has an excellent c-axis orientation, while the inversed gradient architecture with decreased lattice constant shows the deteriorated orientation, indicating that the highly epitaxial growth mechanism most likely related to the interfacial lattice matching degree. The detailed analysis of YBCO films grown on gradient La2−x Gd x Zr2O7 under different deposition parameters, and the influence of microstructure on electrical properties are systematically discussed using x-ray diffraction, rocking curve test, scanning electron microscopy and TEM observations. Finally, the excellent biaxial texture YBCO film on gradient La2−x Gd x Zr2O7 buffer architecture is prepared at a proper heat-treatment temperature of 780 °C, and the full width at half maximum of ϕ-scan and ω-scan are 5.9° and 6.4°, respectively. The critical transition temperature T c,onset of the as-prepared YBCO film is 90 K. With elevating the temperatures, the appearance of a large number of weak-link and amorphous regions, being indicative of the microstructural collapse, is mainly responsible for the reduced superconductivity.

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“…Encouraged at the result of DAPAS project, a new project, GENI (Green superconducting Electric power Network at the Icheon substation) project was launched in 2008. In this project, LSC developed a 22.9 kV, 50 MVA, 500 m HTS cable system using 2G HTS wire [6,7]. This HTS cable system has been working at the Icheon substation in the live Korean grid since August, 2011.…”

Section: Introductionmentioning

confidence: 99%

Short Circuit Withstanding Capability of 22.9kV HTS Cable in Korea

Lee¹,

Yoon²,

Yang³

2014

Journal of International Council on Electrical Engineering

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-In Korea, GENI(Green superconducting Electric power Network at the Icheon substation) project has been conducted since 2008. The objective of the GENI project is to install and operate a 22.9kV/50MVA High Temperature Superconducting (HTS) cable system and a 22.9kV/630A Superconducting Fault Current Limiter (SFCL) system in the Icheon substation located near Seoul. It is important to design specifications considering real power system conditions for a successful application of the HTS cable and SFCL system to a real grid. This paper proposes a design specification for the short circuit withstanding capability of the HTS cable to apply to Korean power distribution system, from the viewpoint of a protection system. The HTS cable system with the proposed specification has been operated in the Korean real grid of the Icheon substation since August, 2011.

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Design and development of 500m long HTS cable system in the KEPCO power grid, Korea

Cited by 26 publications

References 4 publications

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Highly epitaxial YBa₂Cu₃O_7−δ films grown on gradient La_2−xGd _x Zr₂O₇-buffered NiW-RABiTS using all sol–gel process

Short Circuit Withstanding Capability of 22.9kV HTS Cable in Korea

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Design and development of 500m long HTS cable system in the KEPCO power grid, Korea

Cited by 26 publications

References 4 publications

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Installation and Power Grid Demonstration of a 22.9 kV, 50 MVA, High Temperature Superconducting Cable for KEPCO

Highly epitaxial YBa2Cu3O7−δ films grown on gradient La2−x Gd x Zr2O7-buffered NiW-RABiTS using all sol–gel process

Short Circuit Withstanding Capability of 22.9kV HTS Cable in Korea

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Highly epitaxial YBa₂Cu₃O_7−δ films grown on gradient La_2−xGd _x Zr₂O₇-buffered NiW-RABiTS using all sol–gel process