Integrated transportation of high volumes of power through a superconducting transmission line

Volkov, E. P.; Kostyuk, V. V.; Karpyshev, A. V.; Fetisov, S.S.

doi:10.1134/s0040601511130106

Therm. Eng.

2011

DOI: 10.1134/s0040601511130106

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Integrated transportation of high volumes of power through a superconducting transmission line

E. P. Volkov¹,

V. V. Kostyuk²,

A. V. Karpyshev³

et al.

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“…The most promising solution of the problem of large power (up to hundreds GW) transmission over long distances (up to several thousand kilometers) is offered by "hybrid" hydrogen power lines, in which electric energy is transferred via superconducting power (SCP) high voltage DC (HVDC) cables together with the transport of liquid hydrogen via a cryogenic line [1]. As it is known, hydrogen is among the most effective fuel, being characterized by the maximum energy density and having good cooling properties at the liquid state.…”

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Experimental hybrid power transmission line with liquid hydrogen and MgB2-based superconducting cable

et al. 2012

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Results of developing and testing an experimental hybrid power transmission line with liquid hydrogen and superconducting power (SCP) cable based on magnesium diboride (MgB 2 ) are presented. Crit ical currents of the MgB 2 based prototype SCP cable have been determined for the first time at the forced flow of liquid hydrogen in a temperature interval of 20-26 K. Various regimes of SCP cable cryostatting with both subcooled saturated liquid hydrogen have been tested in a broad range of supply rates (7-220 g/s) and pres sures (0.15-0.4 MPa).

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Experimental hybrid power transmission line with liquid hydrogen and MgB2-based superconducting cable

et al. 2012

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Temperature State of the Electrical Insulation Layer of a Superconducting DC Cable with Double-Sided Cooling

2021

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For the reliable operation of a high-voltage DC cable with high-temperature superconducting current-carrying conductors with a sufficiently high difference in electrical potentials, it is necessary to maintain a fixed temperature state not only of the conductors but also of other cable elements, including the electrical insulation layer. In this layer, despite the high electrical resistivity of its material, which can be polymer dielectrics, Joule heat is released. The purpose of this study was to build a mathematical model that describes the temperature state of an electrical insulation layer made in the form of a long hollow circular cylinder, on the surfaces of which a constant potential difference of the electric field is set. Within the study, we consider an alternative design of a cable with central and external annular channels for cooling liquid nitrogen. Using a mathematical model, we obtained integral relations that connect the parameters of the temperature state of this layer, the conditions of heat transfer on its surfaces, and the temperature-dependent coefficient of thermal conductivity and electrical resistivity of an electrical insulating material with a given difference in electrical potentials. A quantitative analysis of integral relations is carried out as applied to the layer of electrical insulation of the superconducting cable. The results of the analysis make it possible to assess the possibilities of using specific electrical insulating materials in cooled high-voltage DC cables under design, including superconducting cables cooled with liquid nitrogen

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Integrated transportation of high volumes of power through a superconducting transmission line

Cited by 2 publications

References 0 publications

Experimental hybrid power transmission line with liquid hydrogen and MgB2-based superconducting cable

Experimental hybrid power transmission line with liquid hydrogen and MgB2-based superconducting cable

Temperature State of the Electrical Insulation Layer of a Superconducting DC Cable with Double-Sided Cooling

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