Operational analysis and limitations of the GIPFC (generalized interline power flow controller)

This paper deals with the operational analysis and the limitations of a GIPFC (generalized interline power flow controller), whilst interacting with the network. The GIPFC is one of the newest devices within the FACTS technology. By utilising this device, an enhanced controllability over independent transmission systems, can be obtained. The steady-state analysis of a GIPFC controlling two balanced independent AC systems, is initially evaluated. The model and the analysis developed are based on the d-q orthogonal co-ordinates, which showed to be a quite an appropriate and easy method for assessing the GIPFC response towards the system´s operation. Yet, to observe its dynamic behaviour and simultaneously validate the previous steady-state analysis, a phase-shift VSI-based GIPFC model was also built in the ATP program. Where applicable, a comparative evaluation between the GIPFC and the IPFC, is also presented.