Testing of 3-Meter Prototype Fault Current Limiting Cables

Gouge, M.J.; Duckworth, R. C.; Demko, J. A.; Rey, C.M.; Thompson, James R.; Lindsay, D.; Tolbert, J.C.; Willen, D.; Lentge, Heidi; Thidemann, Carsten; Kledal, I.D; Carter, W.L.

doi:10.1109/tasc.2009.2018310

Cited by 16 publications

(4 citation statements)

References 9 publications

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“…The experimental results are presented in figure 6. The measured critical current (I c ) values of the inner cable layer at 77 K and 73.7 K were 10.07 kA and 11.79 kA, respectively, which agreed well with the values estimated from the sum of the wire's I c s. The critical current (I c ) values are very promising and higher than those previously reported on similar cable conductors [16][17][18][19][20]. Due to the limitation of the DC power supply we could not estimate the I c values at temperatures lower than 73 K. A new DC power supply expected at the end of June should enable the cryostat and cable to be tested up to 65 K. The results indicate that this technology can be utilized for long length HTS cable cooling, with the next stage being a 300 m-long cable for railway systems.…”

Section: Voltage Withstand Testsupporting

confidence: 84%

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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Section: Voltage Withstand Testsupporting

confidence: 84%

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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“…Another potential important application of CORC ® cables, and especially CORC ® wires, is their use as FCL conductors in dc power systems that would protect equipment from over-currents [3,59,60]. The rapid transition of HTS from the superconducting state into the normal state when the current exceeds I c results in a significant voltage generation over the CORC ® wire length, rapidly increasing its impedance that in return limits the over-current.…”

Section: Corc ® Fcl Wiresmentioning

confidence: 99%

Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction

Laan

Weiss

McRae

2019

Supercond. Sci. Technol.

185

118

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High-field, low-inductance superconducting magnets in particle accelerators and fusion machines require high operating currents, often in combination with high current densities and for some applications conductor bending radii of less than 50 mm. These requirements form a major challenge for magnet conductors consisting of high-temperature superconductors, which are required for reaching magnetic fields exceeding 20 T, or allowing for operating temperatures above 20 K. The high tolerance of RE-Ba 2 Cu 3 O 7−δ coated conductors to axial tensile and compressive strain has led to the concept of CORC ® cables in an attempt to develop a round and mechanically as well as electrically isotropic, high-performance conductor that would meet these challenging requirements. This review article will outline how CORC ® cables evolved from a concept into a practical and robust conductor for high-field magnets and compact superconducting power cables. This review article provides an extensive overview of how CORC ® cable technology has overcome most of the challenges associated with its use in large magnets for fusion, particle accelerators and in helium gas cooled power and fault current limiting cables, while further development is ongoing that will push the CORC ® cable technology to even higher performance levels.

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“…The 25-m HTS-FCL utilized the HTS Triax™ cable architecture with two HTS tape layers per phase, where all three phases surround a concentric corrugated/flexible stainless steel core [2]. The 2G tape had several buffer layers between the YBCO and the slightly magnetic Ni-5%W substrate.…”

Section: Cable Designmentioning

confidence: 99%

Test Results for a 25 Meter Prototype Fault Current Limiting HTS Cable for Project Hydra

Rey¹,

Duckworth²,

Demko³

et al. 2010

AIP Conference Proceedings

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The Oak Ridge National Laboratory (ORNL) has tested a 25-m long prototype High Temperature Superconducting (HTS) cable with inherent Fault-Current Limiting (FCL) capability at its HTS cable test facility. The HTS-FCL cable and terminations were designed and fabricated by Ultera, which is a joint venture between Southwire and nkt cables. System integration and HTS wire were provided by American Superconductor Corporation who was the overall team leader of the project. The ultimate goal of the 25-m HTS-FCL cable test program was to verify the design and ensure the operational integrity for the eventual installation of a ~ 200-m fully functional HTS-FCL cable in the Consolidated Edison electric grid located in downtown New York City. The 25-m HTS-FCL cable consisted of a three-phase (3-Φ) HTS Triax™ design with a cold dielectric between the phases. The HTS-FCL cable had an operational voltage of 13.8 kV phase-tophase (7967 V phase-to-ground) and an operating current of 4000 A rms per phase, which is the highest operating current to date of any HTS cable. The 25-m HTS-FCL cable was subjected to a series of cryogenic and electrical tests. Test results from the 25-m HTS-FCL cable are presented and discussed.

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Testing of 3-Meter Prototype Fault Current Limiting Cables

Cited by 16 publications

References 9 publications

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

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

Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction

Test Results for a 25 Meter Prototype Fault Current Limiting HTS Cable for Project Hydra

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Testing of 3-Meter Prototype Fault Current Limiting Cables

Cited by 16 publications

References 9 publications

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

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

Status of CORC® cables and wires for use in high-field magnets and power systems a decade after their introduction

Test Results for a 25 Meter Prototype Fault Current Limiting HTS Cable for Project Hydra

Contact Info

Product

Resources

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Status of CORC^® cables and wires for use in high-field magnets and power systems a decade after their introduction