Performance Tests of High Temperature Superconducting Power Cable Cooling System

Koh, Deuk‐Yong; Hong, Yong-Ju; Lee, Kwan-Soo

doi:10.1109/tasc.2004.831066

Cited by 13 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Hts Power Cablementioning

confidence: 99%

Recent Activities of HTS Power Application in Korea

Park

Ryu

2007

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…The goals of each phase are to develop three-phase 50 MVA/22.9 kV class HTS cables for the first phase, 500 MVA/154 kV for the second phase and 1 GVA/154 kV for the third phase, respectively. During the first phase, a three-phase 50 MVA/22.9 kV class HTS cable of 30 m length was developed and tested successfully, which is being located in LS Cable Co. [4,5]. Figure 8 shows the 30 m long HTS cable which was co-developed by KERI and LS Cable Co. during the first phase.…”

Section: Hts Power Cablesmentioning

confidence: 99%

Overview of the development of the advanced power system by the applied superconductivity technologies programme in Korea

Ryu¹,

Jo²,

Park³

2006

Supercond. Sci. Technol.

View full text Add to dashboard Cite

At the end of July 2004, DAPAS (development of the advanced power system by applied superconductivity technologies), which is a 10 year long programme, finished the first of three phases. As a result of the first phase, a process for a metre long coated conductor and the core technologies of the distribution line voltage class high temperature superconductor (HTS) power systems including cables, transformers, fault current limiters (FCLs), and motors have been developed. The ultimate goal of the HTS cable project is to develop 1 GVA class HTS transmission cables. During the first phase, a three-phase 50 MVA/22.9 kV class HTS cable of 30 m length has been developed and tested successfully; it has been installed by LS Cable Ltd. In the second phase, grid-connected HTS cables will be developed and established in the real utility line. In case of FCLs, there were two types of FCL developed during the first phase: a reactive type and a resistive type. Both types had the same project targets with the specification of 6.6 kV/200 A for three-phase, and entered the second phase with the target of a 22.9 kV class. In the case of the HTS transformer project, a 1 MVA/22.9 kV class was developed, and after the second phase this project will be considered for practical application. Technically, the optimal design and the manufacturing technologies of HTS transformers as well as the analysis tools of electromagnetic field in the transformer were developed. Furthermore, a 100 hp class motor has been developed so that the key technologies for the utilization of superconducting motors could be obtained. The developed motor consists of Bi-2223 field coils of 100 A operating current at 30 K and a closed-loop cooling system, the results of which will lead us to develop 1 and 5 MVA motors in the second and third phase, respectively. In the case of the coated conductors (CCs) programme, a batch-type co-evaporation process and a reel-to-reel pulsed laser deposition process gave us 10 m long CC tapes in February 2005. We expect that 100 m long or longer CC will be developed during the second phase.

show abstract

“…These losses are overcompensated by the pump, which is more powerful than necessary. Papers considering the pressure loss in the cryogenic pipes began to appear in recent years, but they do not contain specific recommendations and suggestions [1,2].…”

Section: Introductionmentioning

confidence: 99%

Choice of flexible cryostat for 2.5 km DC HTS cable to be laid in St. Petersburg

Ivanov¹,

Romashov²,

Bemert³

et al. 2014

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. HTS tapes production technology has reached the level which allows the manufacture of high-quality cables of long length. In this connection, the issue of creating an HTS power transmission line of some kilometer length had been raised. Pressure loss appears as one of the limiting factors in the circulation of the liquid nitrogen cooling HTS cable placed in a long cryostat. Pressure loss is small in short lines and for this reason did not attract close attention of researchers until recently. Within the framework of the Russian R&D program for HTS power devices, 30 and 200 m AC HTS power transmission lines were created in 2008 and 2010, respectively, and a new 2.5 km 50 MW DC line to be installed in a real city network of St. Petersburg is now at the design and development phase. Pressure loss calculations show the 64/70 mm NEXANS-type corrugated flexible cryostat to be optimal for the cooling channel and the 39/44 mm one -for the return channel. In this case, it is possible to use just one cryopump and one cryocooler to achieve an operational temperature difference of 4-6 K and a pressure drop of 0.1-0.2 MPa in the cooling channel at a flow rate of 20-30 l/min.

show abstract

Performance Tests of High Temperature Superconducting Power Cable Cooling System

Cited by 13 publications

References 3 publications

Recent Activities of HTS Power Application in Korea

Recent Activities of HTS Power Application in Korea

Overview of the development of the advanced power system by the applied superconductivity technologies programme in Korea

Choice of flexible cryostat for 2.5 km DC HTS cable to be laid in St. Petersburg

Contact Info

Product

Resources

About