PhD defence by Catalin Iosif Ciontea on Utilisation of the Ratios of Symmetrical Components in Electrical Protection
05.07.2018 kl. 13.00 - 16.00
Catalin Iosif Ciontea, Department of Energy Technology, will defend the thesis "Utilisation of the Ratios of Symmetrical Components in Electrical Protection".
Utilisation of the Ratios of Symmetrical Components in Electrical Protection
Catalin Iosif Ciontea
Professor Claus Leth Bak
Associate Professor Dezso Sera
Professor Birgitte Bak-Jensen, Dept. of Energy Technology, Aalborg University (Chairman)
Professor Hans Kristian Høidalen, NTNU, Norge
Jörg Blumschein, Siemens, Germany
The occurrence of a short-circuit fault can be dangerous in any electrical system, but in maritime applications its consequences could be catastrophic. If the protection system fails to clear such faults, the following situations may occur: power outages, equipment damage, propulsion loss, collisions, fires, explosions, electrical shocks to humans and others. Traditionally, overcurrent protection is the backbone of protection in maritime electrical systems, but with the increasing complexity of these systems, it needs to overcome more and more challenges. Generated and consumed power levels are increasingly variable, which determines the variability of short-circuit power and fault currents and hence serious protection issues for overcurrent relays. These include loss of coordination, variable tripping times and even the complete lack of relay tripping in extreme cases. Therefore, a new protection method that provides better performance compared to the conventional overcurrent protection is needed in maritime applications. In light of this, the present PhD project addresses the protection issues encountered in maritime electrical systems and investigates new methods of protection against short-circuit faults.
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ALL ARE WELCOME. THE DEFENCE WILL BE IN ENGLISH.
AFTER THE DEFENCE THERE WILL BE AN INFORMAL RECEPTION AT PONTOPPIDANSTRAEDE 111 IN ThE COFFEE ROOM.
Department of Energy Technology
Pontoppidanstræde 111, auditorium 1.177