HTS dc transmission and distribution: concepts, applications and benefits

Abstract

The advantages of using HTS cables for dc transmission and distribution are quantitatively investigated. 2G-HTS cables with LN 2 cooling are considered. MgB 2 cables with LH 2 cooling or with two stages LH 2 / LN 2 cooling are considered as well. A design procedure is first set up to arriveat the sizing of the cryopipes in order as to have a realistic estimation of the cooling power required. Losses and right of way of HTS cables are calculated and compared with those of conventional solutions by following a system approach, which takes into account the possible different power architectures of the two cases. Cost comparison is also carried out. Bulk energy transmission by means of HTS HVDC link is dealt with. Feasibility of medium voltage HTS dc connection of a large offshore wind park is assessed. Finally, low voltage HTS dc distribution for data centers, aluminum smelters and ships is investigated.

Economic Feasibility Study of Using High-Temperature Superconducting Cables in U.K.'s Electrical Distribution Networks

“…With the increasing demand for superconducting applications, the cost of HTS materials is predicted to decrease in the future [5][6][7]. Over the last decade Superconducting materials saw a consistent decrement in its cost at an average rate of 10% [4].…”

“…With time and technology, the cost of manufacturing HTS tapes has reduced considerably over the last decade, with a scope of much cheaper HTS materials in future [4][5][6][7]. This transition created several new opportunities for HTS superconducting cables, which includes replacing the conventional high voltage (HV) cables with low voltage (LV) high power dense superconducting cables in the power grid.…”

High‐Temperature Superconducting Cable Design Based on Individual Insulated Conductors

“…In this design, the insulation operates at cryogenic temperatures. Traditional electrical insulation designs of extruding insulation over the entire cable are not compatible with a cryogenic environment due to the large difference in the CTE values of the insulation material and the metallic and ceramic components of the HTS cables [5,6]. is mismatch in CTE causes significant mechanical stresses on the HTS tapes and the insulation layers leading to potential degradation of the superconducting properties.…”

Electrical and thermal system considerations for MVDC superconducting distribution on navy ships

“…The expectation is that this will result in a stiffer power bus, with fewer losses, and less volume and weight than the normal conductor counterpart [1][2][3][4][5][6][7][8][9]. Therefore, it is important to examine the implications of SCs in a ship's power distribution system, to quantify the anticipated benefits.…”