Hybrid Cooling System Installation for the KEPCO HTS Power Cable

Yang, Hyung Suk; Kim, D.-L; Sohn, S.H.; Lim, J. H.; Choi, Yeon Suk; Hwang, Seung Hyun

doi:10.1109/tasc.2010.2044036

Cited by 16 publications

(6 citation statements)

References 6 publications

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“…Table 1 indicates the design parameters of the cable. Table 2 shows the parameter-dimensions of the tri-axial HTS power cable [8]. In Table 2, the flow rate, the LN 2 temperature of the input terminal, and the pressure of the input terminal are obtained by considering the relation formulas of the pressure loss, flow rate, and the LN 2 temperature variations along with the length [9].…”

Section: Tri-axial Hts Power Cablementioning

confidence: 99%

RTDS-based Model Component Development of a Tri-axial HTS Power Cable and Transient Characteristic Analysis

Ha¹,

Kim²,

Kim³

et al. 2015

Journal of Electrical Engineering and Technology

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-The transient characteristics of the tri-axial High Temperature Superconducting (HTS) power cable are different from those of a conventional power cable depending on whether the cable is under a steady or transient state due to the quench. Verification using simulation tools is required to confirm both the characteristics of the cable and the effect of the cable when it is applied to a real utility. However, a component for the cable has not been provided in simulation tools; thus the RTDSbased model component of the tri-axial HTS power cable was developed, and a simulation was performed under the transient state. The considered properties of model component include resistance, reactance and temperature. Simulation results indicate the variation of HTS power cable condition. The results are used for the transient characteristic analysis and stability verification of the tri-axial HTS power cable. In the future, the RTDS-based model component of the cable will be used to implement the hardware-in-the-loop simulation with a protection device.

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Section: Tri-axial Hts Power Cablementioning

confidence: 99%

RTDS-based Model Component Development of a Tri-axial HTS Power Cable and Transient Characteristic Analysis

Ha¹,

Kim²,

Kim³

et al. 2015

Journal of Electrical Engineering and Technology

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“…They fit in very compact installations as compared to conventional copper cables [11]. Thus, they can also be used in existing power lines and successfully transmit thousands of megawatts of electric power [12,13]. The need to be cooled to a cryogenic temperature requires a cooling process usually based on liquid nitrogen (77 K).…”

Section: Introductionmentioning

confidence: 99%

Design and construction of a high temperature superconducting power cable cryostat for use in railway system applications

Tomita¹,

Muralidhar²,

Suzuki³

et al. 2013

Supercond. Sci. Technol.

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The primary objective of the current effort was to design and test a cryostat using a prototype five-meter long high temperature Bi 2 Sr 2 Ca 2 Cu 3 O y (Bi-2223) superconducting dc power cable for railway systems. To satisfy the safety regulations of the Govt of Japan a mill sheet covered by super-insulation was used inside the walls of the cryostat. The thicknesses of various walls in the cryostat were obtained from a numerical analysis. A non-destructive inspection was utilized to find leaks under vacuum or pressure. The cryostat target temperature range was around 50 K, which is well below liquid nitrogen temperature, the operating temperature of the superconducting cable. The qualification testing was carried out from 77 down to 66 K. When using only the inner sheet wire, the maximum current at 77.3 K was 10 kA. The critical current (I c ) value increased with decreasing temperature and reached 11.79 kA at 73.7 K. This is the largest dc current reported in a Bi 2 Sr 2 Ca 2 Cu 3 O y or YBa 2 Cu 3 O y (Y-123) superconducting prototype cable so far. These results verify that the developed DC superconducting cable is reliable and fulfils all the requirements necessary for successful use in various power applications including railway systems. The key issues for the design of a reliable cryogenic system for superconducting power cables for railway systems are discussed.

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“…HTS (High Temperature Superconducting) cable is one of the future technologies and it will be beneficial to power grid. Many projects concerning about HTS cable are being progressed all over the world [1][2][3]. In Korea, the KEPCO (Korea Electric Power Corporation) HTS power cable system has been successfully operated for evaluating the technical and economic feasibility as well as accumulating the operation experience since 2006 [4].…”

Section: Introductionmentioning

confidence: 99%

A Research for Site Detection Scheme for the High Temperature Superconducting Cable from the Electrical Point of View

Yoon

Lee

Yang

et al. 2013

AMM

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This paper proposes an algorithm to search the suitable site for the installation of the High temperature Superconducting (HTS) cable. The HTS cable is able to transmit a large amount of electricity without additional power transmission facilities. However, it is not desirable to install the HTS cable anywhere because the HTS cable is the high price facility. The best location for the installation of the HTS cable is the place that congestion of transmission line is occurred in. If the HTS cable is used in congestion area, an additional transmission facility is not necessary for stable operation of power system. The technology level of the HTS cable has been improved consistently so the installation of the HTS is possible to use in the limited part of power system. In this paper, an algorithm is suggested to search the proper place for the HTS cable and verified by case study in the power system.

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Hybrid Cooling System Installation for the KEPCO HTS Power Cable

Cited by 16 publications

References 6 publications

RTDS-based Model Component Development of a Tri-axial HTS Power Cable and Transient Characteristic Analysis

RTDS-based Model Component Development of a Tri-axial HTS Power Cable and Transient Characteristic Analysis

Design and construction of a high temperature superconducting power cable cryostat for use in railway system applications

A Research for Site Detection Scheme for the High Temperature Superconducting Cable from the Electrical Point of View

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