Design and Development of VSC based FACTs Controller

Abstract

A transmission line needs controllable compensation for power ow control and voltage regulation. Initially passive compensator were used for this and now semiconductor based converter topologies have replaced them. This can be achieved by different types of FACTS controllers. In particular, the emphasis is on series connected VSC into transmission line known as Static Synchronous Series Compensator (SSSC) which is capable of providing reactive power compensation to a power system.SSSC topology has been simulated using simulation tool and various performance parameters has been evaluated. Verified simulated results, used to develop a prototype model of SSSC. This system is based on 6-pulse VSC converter which is connected in series with transmission line via grid connected transformer. Controlling technique developed has been used to evaluate and control various conditions like power enhancement, voltage control. Prototype model performance has been evaluated. This model involves the three phase inverter operation at low and high voltages.