HTS Tapes Selection for Superconducting Current Limiters

Majka, M.; Kozak, J.; Kozak, S.

doi:10.1109/tasc.2017.2669191

Cited by 25 publications

(11 citation statements)

References 16 publications

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“…The length of CC tape needed in the resistive SCFCL is inversely proportional to the electric field, E max , which the tape withstands during current limitation. The SCFCLs designed with today's commercially available CCs can be applied for electric fields up to 50 V m −1 [10]. A use of higher E max up to 150 V m −1 could considerably reduce the required superconductor length with a significant saving impact on overall costs.…”

Section: Introductionmentioning

confidence: 99%

Composite Heat Sink Material for Superconducting Tape in Fault Current Limiter Applications

et al. 2020

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We enhanced the performance of superconducting tapes during quenching by coating the tapes with various composites, with regards to the application of such coated systems in superconducting fault current limiters. In composition of the coating, we varied the type of epoxy matrix, the content of ceramic filler particles and the use of reinforcement in order to optimize the thermal and the mechanical stability of the coated tapes. By this way modified superconducting tapes were able to reduce the maximum temperature 170 °C of not modified superconducting tape to 55 °C during the quench with electric field up to 130 V m−1.

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Section: Introductionmentioning

confidence: 99%

Composite Heat Sink Material for Superconducting Tape in Fault Current Limiter Applications

et al. 2020

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“…6c). The quench is more homogeneous in the tape with copper stabilization due to bypassing the current through the copper stabilizer during the quench [6,7].…”

Section: Resultsmentioning

confidence: 99%

“…SFCLs react very rapidly by limiting the first, the most dangerous, surge current during a current fault condition, thus protecting the devices of the electric power network from the dynamic effects of current faults [1][2][3][4]. Superconducting tapes with a copper stabilizer or without [5,6] can be used for the construction of current limiters.…”

Section: Introductionmentioning

confidence: 99%

Tests of Parallel Connected HTS 2G Tapes for Fault Current Limiters

Majka

Kozak²

2019

Acta Phys. Pol. A

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The superconducting fault current limiters at high voltage levels and for high current applications should be constructed with modular structure. The superconductor tapes have to be connected in series according to voltage condition and in parallel in order to increase the nominal current of the devices. The process of quenching may occur in all superconducting devices, but in fault current limiters this process must be fully controlled. Uncontrolled transition of the superconducting tape from the superconducting state to the resistive state may cause local overheating and burning through of the high-temperature superconducting tape and, consequently, lead to the destruction of the entire superconducting device. The knowledge about these phenomena in order to be able to properly design superconducting fault current limiters is indispensable. In this study, fault currents were applied to the parallel-connected YBCO tapes in a liquid nitrogen bath, and the characteristics of the current distribution were examined experimentally. The tests were carried out for 2G high-temperature superconducting tapes with copper stabilizer and on tapes without the copper stabilizer.

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“…This peculiar property is, however, limited by the level of electric current, magnetic field and temperature because the superconductor loses its superconductivity due to exceeding their critical values. A transition from the superconducting to the resistive state is very fast (few milliseconds), and this phenomenon makes the REBCO (RE-rare-earth element, B-barium, C-copper, O-oxygen) superconductor as attractive material for superconducting fault current limiters (SCFCL) [1]. The resistive-type SCFCL works on a simple principle.…”

Section: Introductionmentioning

confidence: 99%

Analysis of thermo-physical properties of materials suitable for thermal stabilization of superconducting tapes for high-voltage superconducting fault current limiters

Pekarčíková

Drienovský

Krajčovič

et al. 2019

J Therm Anal Calorim

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High-temperature superconducting coated conductors (CC) are attractive materials for high-voltage resistive fault current limiters. Commercially produced CC tapes cannot withstand electric fields over 100 V m-1 , and therefore, they have to be modified by addition of thermal stabilization layer. We investigated several composite systems suitable for such thermal stabilization. As a matrix of composites, Stycast resins were used, which contain various contents of powder particles from SiC, SiO 2 , PbTiO 3 , ZrW 2 O 8 , or synthetic diamond. The thermo-physical properties such as thermal expansion, heat capacity, thermal diffusivity and direct-current electrical conductivity were measured because they are influenced by filler content in the composite. The possible highest amount of the powder can slightly increase the thermal conductivity and decrease the thermal expansion of the system to an acceptable value needed for the coating of CCs. A side effect is simultaneous drop of heat capacity; however, its value stays still high enough for the purpose of heat sinking. Overall, the best results were achieved in system with 20 vol% of SiC filler in Stycast 2850FT ? Catalyst 23LV resin matrix. There the contribution of the semiconducting SiC addition to the electrical conductivity of composite was negligible.

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HTS Tapes Selection for Superconducting Current Limiters

Cited by 25 publications

References 16 publications

Composite Heat Sink Material for Superconducting Tape in Fault Current Limiter Applications

Composite Heat Sink Material for Superconducting Tape in Fault Current Limiter Applications

Tests of Parallel Connected HTS 2G Tapes for Fault Current Limiters

Analysis of thermo-physical properties of materials suitable for thermal stabilization of superconducting tapes for high-voltage superconducting fault current limiters

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