HTS dc transmission and distribution: concepts, applications and benefits

Abstract

The advantages of using HTS cables for dc transmission and distribution are quantitatively
\ninvestigated. 2G-HTS cables with LN2 cooling are considered. MgB2 cables with LH2 cooling or
\nwith two stages LH2/ LN2 cooling are considered as well. A design procedure is first set up to
\narrive at the sizing of the cryopipes in order as to have a realistic estimation of the cooling power
\nrequired. Losses and right of way of HTS cables are calculated and compared with those of
\nconventional solutions by following a system approach, which takes into account the possible
\ndifferent power architectures of the two cases. Cost comparison is also carried out. Bulk energy
\ntransmission by means of HTS HVDC link is dealt with. Feasibility of medium voltage HTS dc
\nconnection of a large offshore wind park is assessed. Finally, low voltage HTS dc distribution for
\ndata centers, aluminum smelters and ships is investigated.