Abstract
Because of high energy absorption requirements, the energy absorbers in DC circuit breakers will consist of a large number of series- and parallel-connected surge arrester units. This study shows that owing to highly nonlinear I-V characteristic of surge arresters, the failure of a single arrester has a significant impact on the performance of the whole energy absorber. In particular, the arrester column containing the failed unit will draw considerably higher current compared to healthy columns which may lead to cascaded failure of arresters and destruction of the whole column. This paper evaluates and proposes new connection topologies for enhancing the robustness and reliability of energy absorbers in high-voltage DC circuit breakers. A matrix structure is proposed as the topology for the greatest reliability. The impact of the number of breaker modules is also investigated.
Original language | English |
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Title of host publication | 2020 IEEE Power and Energy Society General Meeting, PESGM 2020 |
Publisher | IEEE Computer Society |
Number of pages | 5 |
ISBN (Electronic) | 9781728155081 |
DOIs | |
Publication status | Published - 2 Aug 2020 |
Event | 2020 IEEE Power and Energy Society General Meeting, PESGM 2020 - Montreal, Canada Duration: 2 Aug 2020 → 6 Aug 2020 |
Conference
Conference | 2020 IEEE Power and Energy Society General Meeting, PESGM 2020 |
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Country/Territory | Canada |
City | Montreal |
Period | 2/08/20 → 6/08/20 |
Bibliographical note
This work was supported by the European Union’s Horizon 2020 researchand innovation program under grant No. 691714.
Keywords
- Component failure
- DC circuit breaker
- DC grid protection
- Energy absorber
- Surge arrester