TY  - JOUR
T1  - Study on Modifying HVDC Circuit Breaker using Cassie Breaker
AU - Ahmed Saad, Mahmoud 
JO  - International Journal of Electrical and Power Engineering
VL  - 14
IS  - 5
SP  - 51
EP  - 59
PY  - 2020
DA  - 2001/08/19
SN  - 1990-7958
DO  - ijepe.2020.51.59
UR  - https://makhillpublications.co/view-article.php?doi=ijepe.2020.51.59
KW  - HVDC circuit breaker
KW  -Cassie breaker
KW  -modifications
KW  -arc
KW  -capability
AB  - Arc interruption of High Voltage Direct
Current (HVDC) Circuit Breakers (CBs) is one of the
main challenging factors for using HVDC grids. To
evaluate the arc interrupting capability in HVDC circuit
breakers, black box arc models are used to represent the
non-linear arc conductance depending on Cassie and
Mayrdynamic arc equations. A real line represents a part
of 500 kV electrical connection systems between Egypt
and Kingdom Saudi Arabia is simulated to be a faulty
load. Cassie breaker in normal operation doesn’t need
commutation circuit but in this study, we will investigate
the influence of using commutation circuit with Cassie
breaker. It is founded that the commutation circuit doesn’t
generate resonance but for changing the total impedance
of circuit breaker and this leads to decrease both of the
arcing voltage and arcing time. Moreover, we will study
the effect of using multi-break of Cassie breaker type
when using commutation circuit.
ER  -