Incorporating TCSC into the voltage stability constrained OPF formulation

This paper investigates the effect of thyristor controlled series capacitor (TCSC) on the voltage stability constrained optimal power flow (OPF) formulation where the objective function is to minimize power system load curtailment. Incorporating TCSC affects the topology and hence the power flow distribution. Some numerical cases are presented to discuss the effects of TCSC that is expected when it is incorporated into the load curtailment formulation. The test result reflects the impacts TCSC has in reducing load curtailment during a line congestion situation. The paper also discusses the applicability of the approach in security based reliability studies for systems having control components like TCSC.