Title :
A two-stage DC thyristor circuit breaker
Author :
McEwan, Peter M. ; Tennakoon, Sarath B.
Author_Institution :
Sch. of Eng. Inf. Technol., Sheffield Hallam Univ., Sheffield, UK
Abstract :
Conventional thyristor circuit breaker (TCB) devices absorb virtually all the inductive energy stored in circuits during short-circuit current interruption in a single switching operation. A novel TCB device, involving two switching stages, which produces significantly lower switching overvoltage, is presented and analysed. Results of tests taken on a low voltage model and high power prototype and design criteria are examined and discussed together with cost comparisons and applications
Keywords :
circuit breakers; equivalent circuits; overcurrent protection; overvoltage protection; power system protection; short-circuit currents; switchgear testing; thyristor applications; LV; cost; design; inductive energy storage; modelling; short-circuit current interruption; single switching operation; switching overvoltage; two-stage DC thyristor circuit breaker; Circuit faults; Equivalent circuits; Inductance; Power generation economics; Prototypes; Resistors; Switched capacitor circuits; Switching circuits; Thyristor circuits; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2482-X
DOI :
10.1109/APEC.1995.469052
