Optimization of Hybrid Current-Injection Circuit Breakers Including Mechanical Switch Limitations
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Date
2019
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
Circuit breakers with current injection enable fast interruption of fault currents in DC grids. Independent of the topology, a high number of semiconductors and capacitors is required. The minimum required number of semiconductors and capacitors depend mainly on the system voltage and the maximum fault current. However, also the MS characteristics have considerable influence on the required number of semiconductors and capacitors. Therefore, in this paper the influence of the MS characteristics on the arc extinction and the influence of the arc voltage on the DC-CB design is presented. In addition, optimization procedures for current injection circuit breaker are presented, which include the MS characteristics and four different possibilities to include the arc voltage. Finally, three DC-CB topologies are compared in terms of number of semiconductors and capacitors.
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published
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Editor
Book title
2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Journal / series
Volume
Pages / Article No.
8915118
Publisher
IEEE
Event
21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
HVDC; Multiterminal HVDC
Organisational unit
03889 - Biela, Jürgen / Biela, Jürgen