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

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CIRED 2019 - 1570.pdf (392.42 KB)

Paper number

1570

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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.

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

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