TY - JFULL AU - Sangram Keshori Mohapatra and Sidhartha Panda and Prasant Kumar Satpathy PY - 2012/10/ TI - Power System Stability Improvement by Simultaneous Tuning of PSS and SVC Based Damping Controllers Employing Differential Evolution Algorithm T2 - International Journal of Electrical and Computer Engineering SP - 1080 EP - 1089 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/17302 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 69, 2012 N2 - Power-system stability improvement by simultaneous tuning of power system stabilizer (PSS) and a Static Var Compensator (SVC) based damping controller is thoroughly investigated in this paper. Both local and remote signals with associated time delays are considered in the present study. The design problem of the proposed controller is formulated as an optimization problem, and differential evolution (DE) algorithm is employed to search for the optimal controller parameters. The performances of the proposed controllers are evaluated under different disturbances for both single-machine infinite bus power system and multi-machine power system. The performance of the proposed controllers with variations in the signal transmission delays has also been investigated. The proposed stabilizers are tested on a weakly connected power system subjected to different disturbances. Nonlinear simulation results are presented to show the effectiveness and robustness of the proposed control schemes over a wide range of loading conditions and disturbances. Further, the proposed design approach is found to be robust and improves stability effectively even under small disturbance conditions. ER -