Feasibility Study of Low-Voltage DC Superconducting Distribution System

An integrated low-voltage rated HTS DC power system with multifunctions to suit smart grids

“…Recently, significant achievements in prototype development and performance verification have been made for various power system applications [2][3][4][5]. As for the low-voltage high-current power distribution and utilization, an ''Energy Super-Cable'' has been technically verified to deliver ±5 kV/100 kA/1 GW electric power via DC SC and 1 GW via liquid hydrogen (LH 2 ) to service a community of 200,000 households [6]; A 50 V/200 kA/10 MW DC SC has been conceptually designed for supplying commercial buildings such as internet data center [7].…”

Coolant Topology Options for High Temperature Superconducting Transmission and Distribution Systems

“…Several demonstration projects in the US and overseas have been recently implemented [1]. Most of these applications are AC, although there is also interest in DC [2,3].…”

“…Also, means of facilitating long transmission lines are discussed. Figure 1(a) shows a HTS DC distribution system, such as those proposed for a data center [2,3]. With respect to Figure 1, the power may come to the site through a high voltage transmission line, and then it is reduced to low voltage by an onsite transformer (not shown).…”

Hybrid Power System Intelligent Operation and Protection Involving Distributed Architectures and Pulsed Loads

“…The advantages of zonal and dc zonal distribution were delineated and the dc stability issues introduced. In [12], the reduction in power transmission loss and the cost of introducing DC superconducting distribution were considered for specific power supply networks. Based on the results, it can be concluded that there is a good argument for introducing DC superconducting systems.…”

“…However, the idea of reconsidering DC microgrids has only been researched during the past few years mostly either from a perspective of trying to convince others of the feasibility of reconsidering DC systems, or trying to retrofit today's AC technologies to DC systems. A few articles also investigated the feasibility of DC superconducting DC networks [12], [13]. In this dissertation, an initiative is taken to have a wider look at the DC microgrid while operating within a smart grid, where wide area measurement, protection, and control are activated.…”