Power Flow Comparisons in a Transmission Line with UPFC and SSSCs Devices

The device SSSCs work in the same way as the STATCOM. It has a voltage source converter (VCS) connected in series to the transmission line through a transformer. It required an energy source to provide a continuous voltage through a condenser and to compensate the losses of the VSC. A SSSC is able to exchange active and reactive power with the transmission system. In this case the serial injected voltage can delay or advanced the line current. This means that the SSSC can be uniformly controlled in any value. In this paper the result thus we obtained by modeling a transmission system in MATLAB SIMULINK by using UPFC and SSSCs (static synchronous series compensator) in first case the upfc is connected to bus B3 and in second case upfc is replaced by sssc and the result obtained from these two case is compared. From these two simulink results we conclude that the sssc gives more suitable results as compared to UPFC.