Open AccessSuccessful fault current interruption on DC circuit breaker
Author(s) -
Shan Yunhai,
Lim Tee C.,
Williams Barry W.,
Finney Stephen J.
Publication year - 2016
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2015.0351
Subject(s) - circuit breaker , transient recovery voltage , arc fault circuit interrupter , current (fluid) , residual current device , commutation , fault (geology) , transient (computer programming) , electrical engineering , sulfur hexafluoride circuit breaker , distribution board , voltage , recloser , fuse (electrical) , engineering , short circuit , computer science , power factor , constant power circuit , seismology , geology , operating system
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 d i/ d t before current zero and the rate of rise of the transient recovery voltage d v/ d t 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.