TY  - JOUR
AU  - Kumkratug, Prechanon 
PY  - 2011
TI  - Investigation of the Critical Clearing Time of Power  System with Synchronous Machine Model Including Saliency
JF  - American Journal of Applied Sciences
VL  - 9
IS  - 2
DO  - 10.3844/ajassp.2012.227.230
UR  - https://thescipub.com/abstract/ajassp.2012.227.230
AB  - Problem statement: Most of synchronous generator applied in power system is the salient pole type. Most of previous researches use non-salient model to evaluate the critical clearing time. Thus the results of critical clearing time of power system may be error. Approach: Thus this paper investigate the critical clearing time of power system with synchronous machine. The mathematical model of non-salient pole and salient pole synchronous machine model in power system are symmetrically derived. The critical clearing time of both models are tested and compared on various cases. Results: The critical clearing time of the power system with synchronous including saliency is slightly higher that of non saliency model. Conclusion: It is found from simulation results that even swing curve of both models is obviously different. Their critical clearing times are slightly different.