Experimental Evaluation of 5 kV, 2 kA, DC Circuit Breaker with Parallel Capacitor

Dragan Jovcic; Stefan Kovacevic

doi:10.1109/TPWRD.2021.3130160

Experimental Evaluation of 5 kV, 2 kA, DC Circuit Breaker with Parallel Capacitor

Dragan Jovcic, Stefan Kovacevic

University of Aberdeen

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

6 Downloads (Pure)

Abstract

This article describes design, operation and experimental testing of a mechanical DC CB (Circuit Breaker) with parallel capacitors. The topology resembles hybrid DC CB but there are possible advantages in the costs since the main semiconductor valve is replaced with capacitors, and in performance since this breaker inserts counter voltage earlier. A detailed PSCAD model is employed to support DC CB design and to analyse operating principles. A 5 kV, 2 kA hardware demonstrator with 1.5 ms disconnector opening time is developed
in the university laboratory. The test results demonstrate successful breaking of DC currents, with the measured time for insertion of capacitor voltage of around 290 µs. Further experimental analysis evaluates stresses on the key components,
optimal timing for opening of LCS (Load Commutation Switch) and the margins for successful current interruption.

Original language	English
Pages (from-to)	3510-3520
Number of pages	11
Journal	IEEE Transactions on Power Delivery
Volume	37
Issue number	5
Early online date	23 Nov 2021
DOIs	https://doi.org/10.1109/TPWRD.2021.3130160
Publication status	Published - 1 Oct 2022

Bibliographical note

The authors are thankful to University of Aberdeen technicians: Mr R. Osborne and I. Young for help with the experimental studies.

Keywords

DC swithcgear
HVDC protection
DC Circuit Breaker

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Cite this

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abstract = "This article describes design, operation and experimental testing of a mechanical DC CB (Circuit Breaker) with parallel capacitors. The topology resembles hybrid DC CB but there are possible advantages in the costs since the main semiconductor valve is replaced with capacitors, and in performance since this breaker inserts counter voltage earlier. A detailed PSCAD model is employed to support DC CB design and to analyse operating principles. A 5 kV, 2 kA hardware demonstrator with 1.5 ms disconnector opening time is developedin the university laboratory. The test results demonstrate successful breaking of DC currents, with the measured time for insertion of capacitor voltage of around 290 µs. Further experimental analysis evaluates stresses on the key components,optimal timing for opening of LCS (Load Commutation Switch) and the margins for successful current interruption.",

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N2 - This article describes design, operation and experimental testing of a mechanical DC CB (Circuit Breaker) with parallel capacitors. The topology resembles hybrid DC CB but there are possible advantages in the costs since the main semiconductor valve is replaced with capacitors, and in performance since this breaker inserts counter voltage earlier. A detailed PSCAD model is employed to support DC CB design and to analyse operating principles. A 5 kV, 2 kA hardware demonstrator with 1.5 ms disconnector opening time is developedin the university laboratory. The test results demonstrate successful breaking of DC currents, with the measured time for insertion of capacitor voltage of around 290 µs. Further experimental analysis evaluates stresses on the key components,optimal timing for opening of LCS (Load Commutation Switch) and the margins for successful current interruption.

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Experimental Evaluation of 5 kV, 2 kA, DC Circuit Breaker with Parallel Capacitor

Abstract

Bibliographical note

Keywords

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