Optimization of Hybrid Current-Injection Circuit Breakers Including Mechanical Switch Limitations
Open access
Date
2019Type
- Conference Paper
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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000382032Publication status
publishedExternal links
Book title
2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)Pages / Article No.
Publisher
IEEEEvent
Subject
HVDC; Multiterminal HVDCOrganisational unit
03889 - Biela, Jürgen / Biela, Jürgen
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