Cable Conductor Design for the High-Power MgB2 DC Superconducting Cable Project of BEST PATHS

Bruzek, Christian-Éric; Ballarino, A.; Escamez, Guillaume; Giannelli, Sebastiano; Grilli, Francesco; Lesur, Frédéric; Marian, Adela; Tropeano, M.

doi:10.1109/tasc.2016.2641338

Cited by 20 publications

(14 citation statements)

References 7 publications

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“…As regards the SC material, the trend is moving from Bismuth Strontium Calcium Copper oxide (BSCCO) towards second-generation (2G) HTS materials such as Yttrium Barium Copper oxide (YBCO) and MgB 2 [29]: for YBCO, the reduction of HTS strand cost is still challenging, while, for MgB 2 , the cryostat cost is crucial.…”

Section: Layoutmentioning

confidence: 99%

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Savoldi¹,

Placido²,

Viarengo³

2022

Supercond. Sci. Technol.

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An overview of the main peculiarities of the models currently available in literature for the thermal-hydraulic analysis of the cooling of the HTS power transmission cables, mainly in nominal operating conditions, is performed. Several models address specific issues such as the temperature distribution along or across the cables, and their pressure drop, typically with a simplified approach. The verification and validation of the models has not been systematically addressed so far. From the analysis of the available literature, the lack of a general model, capable to address thermal-hydraulic transients for the cooling of the different possible cable designs, with capability to catch both the behaviour of the cable solid components and different cryogens, is highlighted. The main ingredients that such general thermal-hydraulic model should not miss are presented, also based on the know-how on, and comparison to, similar tools for LTS cables for nuclear fusion applications.

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Section: Layoutmentioning

confidence: 99%

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Savoldi¹,

Placido²,

Viarengo³

2022

Supercond. Sci. Technol.

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“…For superconducting cables, design efforts are directed at managing the cable during the fault and the ensuing transition of the cable from the superconducting state to the normal resistive state (so-called quench). Two distinct approaches can be used for this purpose [ 32 ]: The “fault tolerant” conductor design withstands the quench, with an over-current during the fault but no damage to the conductor. This is due to the copper core of the cable (see Figure 4 ), which acts as a low-resistance electrical shunt protecting the superconducting wires and transporting the current in excess of the superconducting critical current.…”

Section: Dichotomic Decision Optimization For An Hvdc Superconductmentioning

confidence: 99%

“…To this end, a multi-physics model has been developed taking into consideration the thermal and electrical properties of the temperature-dependent materials. For the chosen Best Paths design, the simulations show that the temperature does not exceed 90 K during and after the investigated fault [ 32 ].…”

Section: Dichotomic Decision Optimization For An Hvdc Superconductmentioning

confidence: 99%

Dichotomic Decision Optimization for the Design of HVDC Superconducting Links

Muñoz-Antón

Marian

Lesur

et al. 2020

Entropy

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Superconducting links are an innovative solution for bulk power transmission, distinguished by their compact dimensions, high efficiency and small environmental footprint. As with any new technology field, there is a large amount of design possibilities for such links, each of them having a profound impact on the system configuration. For instance, changing the material can imply a change in the working temperature from 20 to 70 K and has consequences on the maximum link length. This article presents the dichotomic decision possibilities for the optimized design of a high-power superconducting link, focusing on some of the key components of the cable system. The complex design optimization process is exemplified using the European project Best Paths, in which the first 3-gigawatt-class superconducting cable system was designed, optimized, manufactured, and successfully tested.

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“…Both signals were in phase, and the AC frequency was 0.83 Hz, i.e.the time to pass from a positive to a negative peak was »0.6 s, which roughly corresponds to the time required for a full current polarity reversal in a DC line. These values were taken from a real example of MgB 2 conductor used in a DC power cable considered within the european project BESTPATHS [31].…”

Section: Examples Of Numerical Simulationsmentioning

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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Cable Conductor Design for the High-Power MgB2 DC Superconducting Cable Project of BEST PATHS

Cited by 20 publications

References 7 publications

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Dichotomic Decision Optimization for the Design of HVDC Superconducting Links

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

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Cable Conductor Design for the High-Power MgB2 DC Superconducting Cable Project of BEST PATHS

Cited by 20 publications

References 7 publications

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Thermal-hydraulic models for the cooling of HTS power-transmission cables: status and needs

Dichotomic Decision Optimization for the Design of HVDC Superconducting Links

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

Contact Info

Product

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About

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