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PhD defence by Catalin Iosif Ciontea on Utilisation of the Ratios of Symmetrical Components in Electrical Protection

Time

05.07.2018 kl. 13.00 - 05.07.2018 kl. 16.00

Description

Catalin Iosif Ciontea, Department of Energy Technology, will defend the thesis "Utilisation of the Ratios of Symmetrical Components in Electrical Protection".

TITLE

Utilisation of the Ratios of Symmetrical Components in Electrical Protection

PHD DEFENDANT

Catalin Iosif Ciontea

SUPERVISOR

Professor Claus Leth Bak

MODERATOR

Associate Professor Dezso Sera

OPPONENTS

Professor Birgitte Bak-Jensen, Dept. of Energy Technology, Aalborg University (Chairman)
Professor Hans Kristian Høidalen, NTNU, Norge
Jörg Blumschein, Siemens, Germany

ABSTRACT

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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PhD defence by Catalin Iosif Ciontea on Utilisation of the Ratios of Symmetrical Components in Electrical Protection

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.

 

Host

Department of Energy Technology

Address

Pontoppidanstræde 111, auditorium 1.177

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