TY - GEN
T1 - Optimal coordination of ultrafast solid-state circuit breakers in DC microgrids
AU - Kheirollahi, Reza
AU - Zhang, Hua
AU - Wang, Jun
AU - Lu, Xiaonan
AU - Lu, Fei
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/7/18
Y1 - 2021/7/18
N2 - Solid state circuit breakers (SSCBs) present ultrafast response time in interrupting short circuit fault currents in DC systems. Coordination of SSCBs is presented in this paper to minimize the isolation time, enhancing the reliabity, and obtain selectivity. Inverse time current characteristics (ITCC) are considered to describe the time-current trip curves of SSCBs. Three operating profiles are included named as overload, short circuit, and instantaneous regimes. In overload profile, thermal capability of the SSCBs is considered in determining the tripping time; whereas, operating speed is the deciding factor in short circuit and instantaneous profiles. A coordination time interval (CTI) is applied between primary and backup SSCBs to provide selectivity without the need of any communication link. To verify the correctness of the protective scheme, a 400V grid-connected DC microgrid including ultrafast MOV-RCD based SSCBs is simulated in LTspice.
AB - Solid state circuit breakers (SSCBs) present ultrafast response time in interrupting short circuit fault currents in DC systems. Coordination of SSCBs is presented in this paper to minimize the isolation time, enhancing the reliabity, and obtain selectivity. Inverse time current characteristics (ITCC) are considered to describe the time-current trip curves of SSCBs. Three operating profiles are included named as overload, short circuit, and instantaneous regimes. In overload profile, thermal capability of the SSCBs is considered in determining the tripping time; whereas, operating speed is the deciding factor in short circuit and instantaneous profiles. A coordination time interval (CTI) is applied between primary and backup SSCBs to provide selectivity without the need of any communication link. To verify the correctness of the protective scheme, a 400V grid-connected DC microgrid including ultrafast MOV-RCD based SSCBs is simulated in LTspice.
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U2 - 10.1109/ICDCM50975.2021.9504676
DO - 10.1109/ICDCM50975.2021.9504676
M3 - Conference contribution
AN - SCOPUS:85114926337
T3 - 2021 IEEE 4th International Conference on DC Microgrids, ICDCM 2021
BT - 2021 IEEE 4th International Conference on DC Microgrids, ICDCM 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE International Conference on DC Microgrids, ICDCM 2021
Y2 - 18 July 2021 through 21 July 2021
ER -