E.ON Energy Research Center Colloquium


Superconducting DC Transmission and Distribution: Concepts and Applications

Due to their exceptional electrical properties (high current capacity and zero electric resistivity in DC) superconductors enable the viability of DC power cables with very high performance in terms of efficiency and transport capacity. Further advantages are the compact size and the total independence on the ambient conditions (soil temperature) which, in fact, limit the transport capacity of conventional power cables. Also very important is the possibility to operate at lower voltage with the same power transport capacity, so as to reduce conversion loss and to simplify the insulation system thus increasing the reliability.

Architecture and design methods of superconducting DC cables are reviewed. Both cable systems made of High Temperature Superconductors cooled by Liquid Nitrogen (HTS/LN2) and Magnesium Diboride cooled with Liquid Hydrogen (MgB2/LH2) are considered and compared. Maximum possible distance between cooling stations for competitive SC cable systems is evaluated.

Possible application of low-voltage superconducting DC cables to data center, ships and industry is discussed. Viability of bulk energy transmission by means of high-voltage DC superconducting cables is also discussed.


Dr. Antonio Morandi, University of Bologna

Department of Electrical, Electronic and Information Engineering


Wednesday, February 11, 2015, 4:30pm


E.ON Energy Research Center, Room 00.24

RWTH Aachen University


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