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Stability Analysis Of A Unified Power Flow Controller, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Stability Analysis Of A Unified Power Flow Controller, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Omar H. Abdalla
The paper concerns with stability analysis of a Unified Power Flow Controller (UPFC). A nonlinear model is described in the abc-reference frame and then transformed into the dq0-reference frame. The model includes shunt and series compensators of the UPFC. Stability analysis is presented first in a three-dimensional space of system parameters. A linearized model is obtained in state-space form to be used in small-signal stability studies. Effects of system parameters on stability are investigated using eigenvalue analysis. These include resistance, reactance, and modulation indices of the shunt and series components of the UPFC. Simulation results show that the stability of …
Steady State Analysis Of Unified Power Flow Controllers, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Steady State Analysis Of Unified Power Flow Controllers, Omar H. Abdalla, Mohamed A. E. Ghazy, Lotfy M. Lotfy, Nermeen A. M. Hassan
Omar H. Abdalla
The paper presents a tutorial review of the basic operation, control functions and steady state performance of a Unified Power Flow Controller (UPFC). A typical circuit arrangement of a UPFC is given and principles of controlling active and reactive powers are described. The main functions of UPFC are analyzed; including voltage regulation, series reactive compensation, phase compensation, and combined actions. A simplified two-bus power system is considered to demonstrate the main effects of the UPFC. Studies and results are presented to show the wide range capabilities of the UPFC in controlling transmission active and reactive powers simultaneously and/or independently.