Dynamic simulation of a SSSC for power flow control during transmission network contingencies

Power flow control in transmission networks requires new approaches to deal with the uncertainties in the power flow patterns caused by the massive integration of renewable energy generators and the difficulties for constructing new transmission corridors, due to environmental restrictions and social opposition. One solution explored nowadays by utilities is the installation of SSSCs in congested transmission corridors to alleviate overloads during network contingencies, delaying investments in new transmission lines. This paper deals with the modeling of a SSSC for dynamic simulation and its application to alleviate overloads during network contingencies. A reduced model of the Spanish Transmission Network has been used in the dynamic simulations and the results confirm the validity of the SSSC to alleviate network overloads. The studies have been carried out using the simulation software PSS/E and the model of the SSSC has been programmed in Python, instead of the traditional approach based on Fortran.