Enhancing reliability of energy absorbers in DC circuit breakers

Mario Zaja; Dragan Jovcic

Enhancing reliability of energy absorbers in DC circuit breakers

Research output: Contribution to conference › Unpublished paper › peer-review

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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
Publication status	Accepted/In press - 23 Feb 2020
Event	2020 IEEE PES General Meeting - Montreal, Canada Duration: 2 Aug 2020 → 6 Aug 2020

Conference

Conference	2020 IEEE PES General Meeting
Country/Territory	Canada
City	Montreal
Period	2/08/20 → 6/08/20

Keywords

Energy absorber
DC circuit breaker
surge arrester
component failure
DC grid protection

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Cite this

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title = "Enhancing reliability of energy absorbers in DC circuit breakers",

abstract = "Because of high energy absorption requirements, the energy absorbers in DC circuit breakers will consist of a large number of series- and parallel-connectedsurge 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 highercurrent 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. ",

keywords = "Energy absorber, DC circuit breaker, surge arrester, component failure, DC grid protection",

author = "Mario Zaja and Dragan Jovcic",

note = "This work was supported by the European Union{\textquoteright}s Horizon 2020 research and innovation program under grant No. 691714.; 2020 IEEE PES General Meeting ; Conference date: 02-08-2020 Through 06-08-2020",

year = "2020",

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TY - CONF

T1 - Enhancing reliability of energy absorbers in DC circuit breakers

AU - Zaja, Mario

AU - Jovcic, Dragan

N1 - This work was supported by the European Union’s Horizon 2020 research and innovation program under grant No. 691714.

PY - 2020/2/23

Y1 - 2020/2/23

N2 - Because of high energy absorption requirements, the energy absorbers in DC circuit breakers will consist of a large number of series- and parallel-connectedsurge 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 highercurrent 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.

AB - Because of high energy absorption requirements, the energy absorbers in DC circuit breakers will consist of a large number of series- and parallel-connectedsurge 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 highercurrent 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.

KW - Energy absorber

KW - DC circuit breaker

KW - surge arrester

KW - component failure

KW - DC grid protection

M3 - Unpublished paper

T2 - 2020 IEEE PES General Meeting

Y2 - 2 August 2020 through 6 August 2020

ER -

Enhancing reliability of energy absorbers in DC circuit breakers

Abstract

Conference

Keywords

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