FLEXIBLE AC TRANSMISSION SYSTEM BY STATIC VARIABLE COMPENSATOR

The FACTS (Flexible AC Transmission System) is a broad term representing the application of power electronics based solutions to AC power system. More and more power semiconductor based devices, called FACTS , with ratings from tens to hundreds of Giga watts, have been utilized in the power systems to satisfy the function of achieving better power transferability and enhancing power system controllability with the maturity of manufacturing and development and application of power electronics technology. FACTS actually is the application of power electronic equipment, with one or multiple functions, to regulate and control the electrical parameters that govern the operation of transmission systems including voltage, current, impedance, phase angle and damping of oscillations .