Allocation and analysis of TCSC in electric power system using optimal reactive power flow

The electric power system performance when allocated TCSC (Thysristor Controlled Series Compensator) and determined their optimal control parameters was analyzed in this work. The TCSC is used to maximize the total transmission capability of the system and improve the voltage profile, operating within their pre-stablished limits. Computational simulations were performed to analyze the allocation of different amounts of TCSCs in the system in order to maximize the total transmission capacity and to determine the minimum amount of devices considering a predicted loading in the network. Then, the specific number of TCSC defined before were reallocated considering the objective of minimizing the voltage deviation. The allocation problems were solved through branch and bound algorithm by using optimal reactive power flow. Subsequently, the TCSC were maintained by considering the objective of optimizing the voltage profile and loads variations were simulated on the system. The results for the IEEE-118 test systems demonstrated the benefits of using the TCSC in the network because it allowed the increase of the total load of the system and provided an improvement in the voltage profile through its optimum adjustment.