Successful fault current interruption on DC circuit breaker

Shan, Yunhai and Lim, Tee C. and Williams, Barry W. and Finney, Stephen J. (2016) Successful fault current interruption on DC circuit breaker. IET Power Electronics, 9 (2). pp. 207-218. ISSN 1755-4543 (https://doi.org/10.1049/iet-pel.2015.0351)

[thumbnail of Shan-etal-IETPE-2016-Successful-fault-current-interruption-on-DC]
Preview
 Text. Filename: Shan_etal_IETPE_2016_Successful_fault_current_interruption_on_DC.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo
Download (1MB)| Preview

Abstract

This study focus on the interruption capability of the DC circuit breaker employing a current commutation approach and evaluates the two main factors that determine the success rate for breaker current interruption, namely the current slope di/dt before current zero and the rate of rise of the transient recovery voltage dv/dt across the mechanical breaker contacts after current zero. A vacuum circuit breaker is used to evaluate DC breaker characteristics. Detailed mathematical and graphical analysis are presented for the proposed circuit operation used in analysing the circuit breaker properties, with simulation and experimental results at fault current levels up to 330 A.

ORCID iDs

Shan, Yunhai, Lim, Tee C., Williams, Barry W. and Finney, Stephen J. ORCID logoORCID: https://orcid.org/0000-0001-5039-3533;
CORE (COnnecting REpositories)