Optimal usage of transmission capacity with FACTS devices in the presence of wind generation: A two-stage approach

FACTS devices provide the opportunity for fast and flexible power flow control and consequently to improve the usage of the existing transmission system. Given the desire to increase the amount of wind generation, these devices play an important role in efficiently bringing the power from these resources to the loads. In this paper, a control scheme is proposed to determine the optimal steady-state settings of the FACTS devices in order to fully utilize the existing transmission infrastructures in the presence of intermittent and variable energy resources. The proposed control approach is a two-stage algorithm based on regression analysis, which calculates the optimal settings of the FACTS devices by only using a limited amount of local information. The control approach is implemented for the thyristor-controlled series compensator (TCSC) and tested in the IEEE 14-bus system. Simulation results are presented demonstrating the performance of the proposed two-stage control scheme.