Unified Power Flow Controller Placement to Improve Damping of Power Oscillations
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Unified Power Flow Controller Placement to Improve Damping of Power Oscillations

Authors: M. Salehi, A. A. Motie Birjandi, F. Namdari


Weak damping of low frequency oscillations is a frequent phenomenon in electrical power systems. These frequencies can be damped by power system stabilizers. Unified power flow controller (UPFC), as one of the most important FACTS devices, can be applied to increase the damping of power system oscillations and the more effect of this controller on increasing the damping of oscillations depends on its proper placement in power systems. In this paper, a technique based on controllability is proposed to select proper location of UPFC and the best input control signal in order to enhance damping of power oscillations. The effectiveness of the proposed technique is demonstrated in IEEE 9 bus power system.

Keywords: Unified power flow controller (UPFC), controllability, small signal analysis, eigenvalues.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1110806

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