TY  - JOUR
T1  - Optimal Supplementary Controller Design Using GA for UPFC in Order to LFO Damping
AU - , S.A. Taher AU - , R. Hematti 
JO  - International Journal of Soft Computing
VL  - 3
IS  - 5
SP  - 382
EP  - 389
PY  - 2008
DA  - 2001/08/19
SN  - 1816-9503
DO  - ijscomp.2008.382.389
UR  - https://makhillpublications.co/view-article.php?doi=ijscomp.2008.382.389
KW  - Flexible AC transmission systems
KW  -unified power flow controller
KW  -damping power system oscillations
KW  -genetic algorithms
AB  - This study presents a study of the application of a Unified Power Flow Controller (UPFC) to enhance the damping of Low Frequency Oscillation (LFO) in Single-machine Infinite-bus (SMIB) power system. In practice systems use simple traditional UPFC supplementary damping controller (like lead-lag) for LFO damping. However, since the traditional supplementary damping controller parameters are usually tuned based on classical or trial-and-error approaches, they are incapable of obtaining good dynamic performance for various load conditions and disturbances in power system. For this problem, in this study, a UPFC supplementary damping controller design using a Genetic Algorithms (GA) schemes is considered to enhance damping and performance. In this approach the parameters of damping controller are tuned based on GA method. Because GA is an optimization method, therefore, obtained damping controller is an optimal controller. The advantages of the proposed method are their feasibility and simplicity. To show effectiveness of GA approach in damping power system oscillation, the proposed method is compared with a conventional method (lead-lag compensator). Several non-linear time-domain simulation tests visibly show the validity of proposed method in compare to traditional method.
ER  -