Quench propagation in coated conductors for fault current limiters

Roy, F.; Perez, Sabrina; Therasse, Mathieu; Dutoit, B.; Sirois, Frédéric; Decroux, M.; Antognazza, L.

doi:10.1016/j.physc.2009.05.066

Cited by 11 publications

(5 citation statements)

References 15 publications

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“…Figure 12 shows the influence of the substrate thickness on the propagation velocity, for a current density of 1.1J c . There is a continuous increase of the propagation speed for thinner substrates, as was already observed by other groups [6]. At the same time the temperature profile tends to become stiffer, as shown in figure 13.…”

Section: Influence Of Substrate Thicknesssupporting

confidence: 78%

“…The principle of the model is to use a thermal-only FEM model of the conductor, and calculate analytically the local heat dissipation, similar to [6]. The particularity of our approach is that the evaluation of the heat dissipation is independent of the FEM problem and may thus be conducted on a different scale from the FEM meshing.…”

Section: Novel Hybrid Modelmentioning

confidence: 99%

“…For now, only the influence of the temperature on the current density repartition is considered, which is a reasonable assumption if the current is close-to or above the critical current. The principle of the model is to use a thermal-only FEM model of the conductor, and calculate analytically the local heat dissipation, similarly to [6]. The particularity of our approach is that the evaluation of the heat dissipation is independent of the FEM problem, and may thus be conducted on a different scale from the FEM meshing.…”

mentioning

confidence: 99%

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Hybrid model of quench propagation in coated conductors for fault current limiters

Badel¹,

Antognazza²,

Therasse³

et al. 2012

Supercond. Sci. Technol.

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We developed a hybrid model of the quench propagation in coated conductors in current limitation condition. This model combines Finite Element Method to study the thermal behaviour of the coated conductors, and analytical calculation of the heat dissipation. We demonstrate that the evaluation of the heat dissipation can be conducted on a larger mesh than the FEM thermal problem. The results obtained with this model are in very good agreement with the experiments, without the need of using free parameters for adjustment. Parametric studies are then conducted to evaluate the influence of both the substrate thickness and the layer interfaces thermal properties, on the transition propagation behaviour. 3D simulations of a thin superconducting line placed on a wider substrate are also presented. Significant transverse heat propagation is observed in spite of the low thermal conductivity of the substrate, though this has little to no influence on the transition propagation along the line. These results are discussed in the context of FCL design.

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Section: Influence Of Substrate Thicknesssupporting

confidence: 78%

Section: Novel Hybrid Modelmentioning

confidence: 99%

mentioning

confidence: 99%

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Hybrid model of quench propagation in coated conductors for fault current limiters

Badel¹,

Antognazza²,

Therasse³

et al. 2012

Supercond. Sci. Technol.

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“…According to some literature, the power law model cannot model properly such situations [28]. However, so far, the percolation model has scarcely been used in the literature (one example can be found in [29] for quench modeling). One reason for that might be the lack of materials data that allows proper identification of the J c0 and n 0 parameters [30].…”

Section: Model Of Mgb 2 Superconducting Propertiesmentioning

confidence: 99%

Experimental characterization of the constitutive materials of MgB₂multi-filamentary wires for the development of 3D numerical models

Escamez¹,

Sirois²,

Tousignant³

et al. 2017

Supercond. Sci. Technol.

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Today MgB2 superconducting wires can be manufactured in long lengths at low cost, which makes this material a good candidate for large scale applications. However, because of its relatively low critical temperature (less than 40 K), it is necessary to operate MgB2 devices in a liquid or gaseous helium environment. In this context, losses in the cryogenic environment must be rigorously minimized, otherwise the use of a superconductor is not worthy. An accurate estimation of the losses at the design stage is therefore mandatory in order to allow determining the device architecture that minimizes the losses. In this paper, we present a complete a 3D finite element model of a 36-filament MgB2 wire based on the architecture of the Italian manufacturer Colombus. In order for the model to be as accurate as possible, we made a substantial effort to characterize all constitutive materials of the wire, namely the E–J characteristics of the MgB2 filaments and the electric and magnetic properties (B−H curves) of nickel and monel, which are the two major non-superconducting components of the wire. All properties were characterized as a function of temperature and magnetic field. Limitations of the characterization and of the model are discussed, in particular the difficulty to extract the maximum relative permeability of nickel and monel from the experimental data, as well as the lack of a thin conductive layer model in the 3D finite element method, which prevents us from taking into account the resistive barriers around the MgB2 filaments in the matrix. Two examples of numerical simulations are provided to illustrate the capabilities of the model in its current state.

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“…F. Roy [2,3] proposed a 2D electro-magneto-thermal model, which was calculated with H formulation, to simulate the quench performance of SC tape. The increase of the thickness of each layer of superconductor, aiming to speed up calculation, might result in inaccuracy of calculation result.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experiment of the Current Limiting Performance of a Resistive Superconducting Fault Current Limiter in the Experimental System

Liang

Yuan

Baldan

et al. 2015

J Supercond Nov Magn

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Please cite only the published version using the reference above.See http://opus.bath.ac.uk/ for usage policies.Please scroll down to view the document. Abstract In this paper, a 220-V resistive superconducting fault current limiter (SFCL) prototype is built and tested under different prospective fault currents, which vary from 0.8 to 7.4 kA. A 2D superconductor model is integrated into an experimental circuit model in COMSOL to simulate the performance of the SFCL prototype in the experimental system in fault tests. In the simulation, a new E-J relationship is proposed to enhance the convergence of calculation.Comparison between simulation results and experimental results shows that the proposed model performs well in simulating current limiting performance of SFCL in experimental system in case of fault.

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Quench propagation in coated conductors for fault current limiters

Cited by 11 publications

References 15 publications

Hybrid model of quench propagation in coated conductors for fault current limiters

Hybrid model of quench propagation in coated conductors for fault current limiters

Experimental characterization of the constitutive materials of MgB₂multi-filamentary wires for the development of 3D numerical models

Modeling and Experiment of the Current Limiting Performance of a Resistive Superconducting Fault Current Limiter in the Experimental System

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Quench propagation in coated conductors for fault current limiters

Cited by 11 publications

References 15 publications

Hybrid model of quench propagation in coated conductors for fault current limiters

Hybrid model of quench propagation in coated conductors for fault current limiters

Experimental characterization of the constitutive materials of MgB2multi-filamentary wires for the development of 3D numerical models

Modeling and Experiment of the Current Limiting Performance of a Resistive Superconducting Fault Current Limiter in the Experimental System

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Product

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Experimental characterization of the constitutive materials of MgB₂multi-filamentary wires for the development of 3D numerical models