Development of a new topology of dc hybrid circuit breaker

Author

Yifei Wu ; Mingzhe Rong ; Yi Wu ; Fei Yang ; Mei Li ; Yang Li

Author_Institution

Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

1

Lastpage

4

Abstract

A new topology of dc hybrid circuit breaker based on fast switch and liquid metal fault current limiters(LMFCL) is proposed for medium voltage dc system in this paper. The voltage generated by LMFCL can commutate the fault current into the parallel thyristors and make arcless open of fast switch contacts. The thyristors are forced off due to the parallel LC reverse pulse discharge circuit. The influences of bulkhead aperture diameter, current rising rate and voltage on LMFCL at the initial commutation moment on the arcless current commutation are analyzed. Finally, the breaking based on arcless commutation is accomplished with short circuit fault simulated using synthetic circuit.

Keywords

circuit breakers; fault current limiters; network topology; LMFCL; arcless current commutation; bulkhead aperture diameter; dc hybrid circuit breaker topology; fast switch contacts; liquid metal fault current limiters; medium voltage dc system; parallel LC reverse pulse discharge circuit; parallel thyristor; synthetic circuit; Educational institutions; Electrodes; Fault currents; Lead; Probes; Testing; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Power Equipment - Switching Technology (ICEPE-ST), 2013 2nd International Conference on

Conference_Location

Matsue

Type

conf

DOI

10.1109/ICEPE-ST.2013.6804366

Filename

6804366