TY - JOUR T1 - Low Frequency Oscillations Damping by UPFC with a Robust Fuzzy Supplementary Controller AU - , S.A. Taher AU - , R. Hematti AU - , A. Abdolalipour JO - International Journal of Electrical and Power Engineering VL - 2 IS - 5 SP - 314 EP - 320 PY - 2008 DA - 2001/08/19 SN - 1990-7958 DO - ijepe.2008.314.320 UR - https://makhillpublications.co/view-article.php?doi=ijepe.2008.314.320 KW - Low Frequency Oscillation (LFO) KW -Unified Power Flow Controller (UPFC) KW -damping power system oscillations KW -Fuzzy Logic KW -Flexible AC KW -Transmission Systems (FACTS) AB - This study presents discusses the small-signal stability analysis of the application of a unified power flow controller (UPFC) to enhance the damping of low frequency oscillation (LFO) in a single-machine infinite-bus (SMIB) power system. A UPFC supplementary damping controller design using a fuzzy logic schemes is considered to enhance damping. The advantages of the proposed method are their feasibility and simplicity. To show effectiveness of fuzzy approach in damping power system oscillation, the proposed method is compared with a conventional method (lead-lag compensation). Validity of the proposed method has been confirmed by linear time-domain simulation results. ER -