Location of IPFC under contingency condition in power system

Abstract

The interline power flow controller (IPFC) is the latest generation of flexible AC transmission systems (FACTS) device specifically used for the control of power flows in multi transmission system. If the load on the power system is heavily increased, then the system is at high risk because of line outages and consequent voltage instability problem. The power loss and voltage drop are reliable indicators of voltage security of power networks. Here we analyze the voltages, line apparent power flows and total power losses in the system. This paper also proposes an algorithm for optimal location of the IPFC so as to enhance voltage stability and to maintain the line flows within the limit under the over loaded line outage contingency in a power system network. The over loaded lines (outages) are ranked based on Severity Index. The effectiveness of the proposed method is tested for IEEE-30 bus system with the help of MATLab software.