Protection Coordination in DC Shipboard Power Systems: Challenges, Current Status and New Technologies

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Paper number
1570
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Kim, Seongil, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Kim, Soo-Nam, Hyundai Electric & Energy Systems, Korea Republic of
Dujic, Drazen, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Abstract
In the maritime domain, the efforts to reduce the emission of greenhouse gases move industry towards highly efficient vessels with DC distribution technologies. These new power systems, however, come with technical challenges in protection coordination which is necessary to minimise the impact of the system fault. This paper presents benefits and protection difficulties of DC shipboard power systems, and current protection schemes, commercially available, with three different classification: bus protection with solid-state bus-tie breakers, feeder protection with high-speed fuses and generator-rectifier fault blocking functions. In addition, two new protection methods recently proposed are introduced: additional bus capacitance for the bus protection and artificial short-circuit for the generator-rectifier protection. Lastly,  possibility of a modular multi-level converter for the DC shipboard power systems is discussed with its pros and cons.
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/463
http://dx.doi.org/10.34890/685
ISSN
2032-9644
ISBN
978-2-9602415-0-1