Hybrid superconducting AC fault current limiter principle and previous studies

Tixador, Pascal; Brunet, Yves; Lévêque, Jean; Pham, V.D.

doi:10.1109/20.119907

Cited by 34 publications

(3 citation statements)

References 5 publications

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“…These PTC materials conduct the entire steady state current under normal conditions. (ii) Superconducting Current Limiter: Only resistive superconducting current limiters (SCCL) are used for DC interruption [21]. All superconductors have a time dependent critical current value.…”

Section: (B) Breakers Making Use Of Nonlinear Devices With Currentmentioning

confidence: 99%

Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor

Kulkarni

Santoso

2012

Advances in Power Electronics

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This paper describes and demonstrates the principle and efficacy of a novel direct current fault interruption scheme using a reactor in series with a controlled rectifier and a conventional AC circuit breaker. The presence of the series reactor limits the capacitive discharge current from the DC filter capacitor at the output terminals of the phase-controlled rectifier. In addition, the series reactor along with the filter capacitor forms an underdamped series RLC circuit which forces the fault current to oscillate about zero. This synthetic alternating current can then be interrupted using a conventional AC circuit breaker. The selection criteria for the series reactor and overcurrent protection are presented as well. Using the proposed scheme for an example case, a DC fault current magnitude is reduced from 56 kA to 14 kA, while the interruption time is reduced from 44 ms to 25 ms.

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Section: (B) Breakers Making Use Of Nonlinear Devices With Currentmentioning

confidence: 99%

Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor

Kulkarni

Santoso

2012

Advances in Power Electronics

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“…Following the simple adiabatic heat calculation arguments in [15] and [16] that V o *I lim *δt equals A*L*C p *∆T (where Vo is the line rms voltage, I lim is the rms limited current, δt is the fault duration, A the composite cross section, C p the specific heat and ∆T the adiabatic temperature rise) along with R = ρ L/A and Vo = I lim *R some simple results can be obtained. Firstly, for a constant total volume limiter element ∆T is proportional to I lim and secondly ∆T is proportional to 1/L 2 (even though the cross sectional area is changing).…”

Section: Discussionmentioning

confidence: 99%

Modeling of HTS Applications Using Emtp With Flux-Pinning Scaling Models for Practical HTS Superconductors

Cave¹,

Sood²

2008

AIP Conference Proceedings

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The EMTP software (Electromagnetic Transient Program) for modeling the behavior of electric power systems is commonly used to obtain the transient response of system disturbances, for example caused by fault currents. We have developed specific modules describing practical HTS materials that can be used to describe new architectures involving superconducting power devices, for example fault current limiters. These modules include flux-pinning scaling models that vary smoothly in their parameterization of the J-T-B-E (current density, temperature, magnetic field and electric field) surfaces. In addition, the non-linear low temperature materials properties, such as specific heat, are included for a more accurate description of device behavior. The advantage of this approach is that the complex and non-linear flux-pinning and thermal characteristics of HTS devices can be integrated into power network models. The modeling is presented, with an emphasis on fault current limiters where three domains of operating characteristics are identified.

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“…Although there are various kinds of fault current limiters, we focus on the resistive type superconducting fault current limiter (RSFCL) using Rare-Earth Barium Copper Oxide (REBCO) tapes because of its quick response and large current capacity. There are three requirements in the case of using a REBCO tape as a current-limiting element: high normal state resistance, high thermal stability, and quick recovery within 0.3 s to the superconducting state which is the fastest reclosing time of the commercial breakers [3]. In general, REBCO tape has a copper stabilizer to improve thermal stability and protect the tape from burnout [4].…”

Section: Introductionmentioning

confidence: 99%

Recovery performance of partially-joined porous-stabilized REBCO tape for resistive type superconducting fault current limiters

Yuki

Hashizume

2020

Supercond. Sci. Technol.

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In the case of using rare-earth barium copper oxide (REBCO) tape as a current-limiting element, there are three requirements: high normal state resistance, high thermal stability, and quick recovery to the superconducting state. In this study, a new type of REBCO tape with a metal porous medium as a stabilizer (a porous-stabilized REBCO tape) was proposed, which has high resistance compared to bulk material and prevents film boiling due to its strong capillary force. First, a numerical simulation was performed to evaluate the current-limiting performance of the porous-stabilized REBCO tape with a Ni-Cr porous medium. The results showed that the current-limiting performance was dramatically improved by placing indium partially on the REBCO tape to join the porous medium compared to placing indium wholly. Then, the porous-stabilized REBCO tapes with various arrays of indium were manufactured, and tested to confirm its recovery characteristics. The experimental results indicated that the partially-joined Ni-Cr porous-stabilized REBCO tape reduced the recovery time by 69% compared to that of the stabilizer-free REBCO tape.

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Hybrid superconducting AC fault current limiter principle and previous studies

Cited by 34 publications

References 5 publications

Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor

Interrupting Short-Circuit Direct Current Using an AC Circuit Breaker in Series with a Reactor

Modeling of HTS Applications Using Emtp With Flux-Pinning Scaling Models for Practical HTS Superconductors

Recovery performance of partially-joined porous-stabilized REBCO tape for resistive type superconducting fault current limiters

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