Voltage Stability Enhancement and Efficiency Improvement of Nigerian Transmission System Using Unified Power Flow Controller

the neutral of ∆ -Y transformer. Consequently, the harmonic current flows through the transmission line. This harmonic current controls the dc voltage of series

Key words: Power system, Unified Power Flow Controller (UPFC), transient stability, High Voltage Direct Current (HVDC), Flexible AC Transmission System (FACTS),

Key words: Power system, Flexible AC Transmission Systems (FACTS), static var compensator, thyristor controller series, static synchronous compensator, unified power flow controller,

reduction, peak shaving, and better voltage profile, power quality improvement, reliving of transmission and distribution congestion then improved network capacity,

To address this problem, in this research an optimization approach, based on the Genetic Algorithms (GA) method is proposed for the design of UPFC controllers (power-flow

The effect of efficient control of UPFC on damping of the low-frequency oscillations is demonstrated by using the corrected model and the results are compared with

µ-based UPFC controller synthesis: The main goals of the UPFC controller design are: Power system oscillation damping, DC-voltage regulator and power flow

The study also provides a knowledge based system to determine the Var compensation required to maintain voltage stability of the system for any real and reactive power