TY  - JOUR
T1  - The Use of Three-Phase Fault Analysis for Rating Circuit Breakers on Nigeria 330 kV Transmission Lines
AU - Abdulkareem, Ademola AU - Awosope, C.O.A. AU - Awelewa, A.A. 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 12
SP  - 2612
EP  - 2622
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.2612.2622
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.2612.2622
KW  - circuit breaker
KW  -three-phase
KW  -Power system security
KW  -simulation
KW  -maximum current magnitude
AB  - Fault studies play a significant role in the power system security for the supply and generation of
electrical energy to end-users. This research work focuses on the analysis and simulation of 3 kV" fault
phenomenon to determine the voltage magnitude and fault current magnitude in the test system. The test
system is the Nigeria 28-bus, 330 kV Transmission System. The 28-bus system is simulated using
MATLAB-based programme and the maximum current magnitude obtained is used to determine an appropriate
value of the circuit breaker rating for all the linesin the 330 kV power system. This research therefore, suggests
the level of protection to be applied on Nigeria 330 kV power lines with the aim of improving system security
as the information gained from this study helps in the setting of relay. The study revealed the abnormally high
magnitude of current that flows through the powerline to the point of fault and recorded the highest value of
6.4376 kA (36.796 pu) through the line 4-3 (Jebba GS-Jebba TS) when Jebba GS is faulted.
ER  -