Steady state formulation of FACTS devices based on ac/ac converters

Here the analysis on the inclusion of a pulse width modulated (PWM) ac link unified power flow controller into a power flow program is discussed. Similarly, a PWM series compensator is connected to the power system to regulate the active power flow on the corresponding transmission line. Details of the Newton-Raphson´s power flow algorithm are exhibited. Results of simulation are presented on a 39-buses power system.