Optimizing Multi-Line Power Flow Using IPFC

FACTS devices are one of the major aspects of advance power electronics revolutions that play vital role in electrical energy systems. FACTS devices or controllers have the principle role to substantially increase the overall controllability and capacity of power transfer in a.c systems. FACTS devices have ability to simultaneously govern the parameters which are coupled in nature and also which control the operating points of an existing transmission system.These internally coupled parameters include series impedance of line, current rating of line, voltage of buses, load angle and the damping of sub frequency oscillation. In wide variety of FACTS controllers available till now only UPFC was able to prove its multidimensional flexibility and could control most of the system parameters which are responsible for flow of power in transmission lines. UPFC could simultaneously and selectively control bus voltage, effective impedance ofline and phase angle. This control was possible in many ways including selectively or simultaneously. The Interline Power Flow Controller (IPFC) is a recently developed FACTS controller, which addresses the problem of compensating multi-lines at a given sub-network. In this research paper modeling of IPFC has been presented, inMATLAB-SIMULINK to analyze its capabilities to control real power flow and/or flow of reactive powers. The conventional PI control technique has been employed to analyze the performance of IPFC. A simple case study of two-transmission line with two-bus system has been considered to show the control attributes of controller. The results have been demonstrated for thedifferent cases and operating conditions.