Experimental and numerical analysis of high resistive coated conductor for conceptual design of fault current limiter

Park, Dong Keun; Yang, Seong Eun; Kim, Young Jae; Chang, Ki Sung; Ko, Tae Kuk; Ahn, Min Cheol; Yoon, Yong Soo

doi:10.1016/j.cryogenics.2008.09.006

Cited by 19 publications

(5 citation statements)

References 5 publications

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“…Our research is valid for any CC; concrete examples and calculations are made using specific characteristics of ReBaCuO CCs manufactured by SuperPower Inc. (SP) [2]. The tape architecture consists of a silver stabilizer, a silver over-layer, a ReBaCuO layer, a buffer and a hastelloy C-276 substrate [3]. Each phase of the RFCL device is composed of several paralleled tapes to obtain the required total critical current (I c,tot ).…”

Section: Concept Of the Modelmentioning

confidence: 99%

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Inhomogeneity effects in HTS coated conductors used as resistive FCLs in medium voltage grids

Colangelo¹,

Dutoit²

2012

Supercond. Sci. Technol.

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Abstract.For Resistive Fault Current Limiters (RFCLs) based on high temperature superconducting coated conductors (HTS-CCs), inhomogeneity, in terms of critical current and geometrical imperfections such as stabilizer and substrate thicknesses, plays a very important role and it may limit the penetration of such devices into the electrical market. This paper presents an electro-thermal model, developed in SimPowerSystem TM , able to describe the transient respond of HTS-CC candidates with different degrees of inhomogeneity, both in terms of critical current and of thickness stabilizer. Critical current inhomogeneity has been modeled with Gaussian distributions. Layers thicknesses used in the simulations have been chosen by fitting the temperature dependence of real tape resistances. Our approach considers relative inhomogeneity positions as well as thermal conduction along the HTS-CC length. The model is tuned using experimental measurements made on ReBaCuO coated conductors. A new dynamical thermal calibration of the model is proposed using finite element method calculations. Inhomegeneity effects with different possible faults (e.g. three phases and single phase short-circuit) are presented. Inhomogeneity Effects in HTS-CCs Used as RFCLs in MV Grids2

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Section: Concept Of the Modelmentioning

confidence: 99%

“…The tape architecture consists in silver stabilizer, silver over-layer, ReBaCuO layer, buffer and hastelloy C-276 substrate [3]. Each phase of the RFCL device is composed by several paralleled tapes to obtain the required total critical current (I c,tot ).…”

Section: Concept Of the Modelmentioning

confidence: 99%

Inhomogeneity effects in HTS coated conductors used as resistive FCLs in medium voltage grids

Colangelo¹,

Dutoit²

2012

Supercond. Sci. Technol.

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“…There were some previous works on Superconducting SFCL experiments and conceptual designs which used the tapes with non-magnetic substrate [10,11]. However, according to the best of our search on literatures, there is no specific and detailed research on the comparison of AC losses from SCS Tape and SF Tape with systematic analysis on wide range of frequency dependence.…”

Section: Introductionmentioning

confidence: 99%

Investigation and comparison of AC losses on stabilizer-free and copper stabilizer HTS tapes

Shen

Geng

et al. 2017

Physica C: Superconductivity and its Applications

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This paper presents the measurement and simulation of Alternating Current (AC) losses on the Stabilizer-free and Copper Stabilizer High Temperature Superconducting (HTS) Tapes: SuperPower SF12100 and SCS12050. The AC loss measurement utilised electrical method to obtain overall losses with AC transport currents. The 2D H-formulation by COMSOL Multiphysics has been used to simulate the real geometry and multi-layer HTS tapes. Ferromagnetic AC losses of substrate have been assumed to be ignored as the substrates of SF12100 and SCS12050 are non-magnetic. Hysteresis AC losses in the superconducting layer, and eddy-current AC losses in copper stabilizer, silver overlayer and substrate were concerned in this investigation. The measured AC losses were compared to the AC losses from simulation, with 3 cases of different AC frequency 10, 100, and 1000 Hz. The eddy-current AC losses of copper stabilizer at frequency 1000 Hz were determined from both experiment and simulation. The estimation of AC losses with frequency at 10000 Hz was also carried out using simulation method. Finally, the frequency dependence of AC losses from Stabilizer-free Tape and Copper Stabilizer Tape were compared and analysed.

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“…The HTS-CC architecture we modeled is similar to the architecture of commercial tapes for fault current limiter applications (SP12100) produced by Superpower, Inc. [12]. The longitudinal length of a single HTS-CC (L tot ) is divided in to Nb isothermal blocks.…”

Section: D Electrothermal Modelmentioning

confidence: 99%

Analysis of the influence of the normal zone propagation velocity on the design of resistive fault current limiters

Colangelo¹,

Dutoit²

2014

Supercond. Sci. Technol.

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Commercial high-temperature superconducting coated conductors (HTS-CCs) have low thermal diffusivity and nonuniform critical current density. These two factors lead commercial HTS-CCs to a partial quench when they are subjected to a transport current around their average critical current (I c.av ). The consequence is the appearance of localized resistive zones, and a high risk of thermal runaway can arise when HTS-CCs are used for resistive fault current limiter (RFCL) purposes. The enhancement of the normal zone propagation velocity (NZPV) of HTS-CCs is a desirable solution for achieving sufficient thermal stability while keeping the cost of RFCLs under an acceptable threshold. Even though in recent years, several valid methods to increase the NZPV have been proposed, their impact on the design of RFCLs is not clear. For this reason, we developed a one-dimensional numerical model that enables us to simulate HTS-CCs with enhanced NZPV and to study the limitation performance of a HTS-CC-based RFCL in real operating conditions. Our preliminary re sults demonstrate that the NZPV enhancement can effectively limit the needed amount of HTS-CCs with important economic benefits for the design of RFCLs.

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Experimental and numerical analysis of high resistive coated conductor for conceptual design of fault current limiter

Cited by 19 publications

References 5 publications

Inhomogeneity effects in HTS coated conductors used as resistive FCLs in medium voltage grids

Inhomogeneity effects in HTS coated conductors used as resistive FCLs in medium voltage grids

Investigation and comparison of AC losses on stabilizer-free and copper stabilizer HTS tapes

Analysis of the influence of the normal zone propagation velocity on the design of resistive fault current limiters

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