Investigations on power flow solutions using Interline Power Flow Controller (IPFC)

This paper presents a mathematical model of IPFC, termed as power injection model (PIM). The model is incorporated in a MATLAB power flow program based on Newton-Raphson (NR) algorithm to study the power flow control in transmission lines in which IPFC is placed. By utilizing this device(IPFC), an enhanced controllability over independent transmission systems or those lines whose sending-end are connected to a common bus, can be obtained. The power flow through the line can be regulated by controlling both magnitudes and angles of the series voltages injected by an IPFC. Generally, the IPFC employs multiple dc-to-ac inverters providing series compensation for a different line respectively. A program in MA TLAB has been written and numerical results are carried out on a standard 2 machine 5 bus system and IEEE 30 bus system. The results without and with IPFC are compared in terms of voltages, active and reactive power flows to demonstrate the performance of the IPFC model.