Comparison of dynamic performances of IPFC, UPFC and back to back HVDC transmission on local and inter-area oscillation damping in power systems

The permanent goal in the field of electrical power grids is to find new ways of transmission and distribution electricity in terms of low cost and reliable. Due to explosive growths in the power demand, deregulation, and distributed generation facilities, these systems are possible to be exposed to stability problems ever than before. Local and inter-area oscillations are important types of these problems which are the results of inadequate damping of the power systems. In energy systems, the oscillations can be observed as the swinging of parameters such as buses Voltages, phase angles, and real power on transmission lines, this is due to the normal change in the increase or decrease of sudden load or external changes fault occurs in a system. The essential purpose of this topic is to research the damping oscillations of both local and inter-area by a three popular the "Flexible-Alternating- Current-Transmission (FACTS)" devices a "Unified-Power- Flow-Controller (UPFC)", "Interline-Power-Flow-Controller (IPFC)" and "Back to Back High Voltage Direct Current (BTB-HVDC)". In addition, The Kundur 2-Area of power system offered to study and compares the operation of each device. In this paper, a simulation model was brought and applied to an electricity grid. Finally, the results of simulation clarified the performance of each device under the normal and abnormal circumstance that has been simulated on the proposed electrical grid.