Power System Static Security Enhancement through Interline Power Flow Controller

Due to ever increasing load demand and contingencies in developing countries, the operation of the power systems are at almost full capacity coupled with limited grid expansion. As such, line overloads are inevitable thus, operating the system around its limit. Hence, system's security is endangered. Flexible Alternating Current Transmission System (FACTS) supports utilization of obtainable system without interrupting system limit. Static security evaluations of a modelled IEEE 30-bus test system in MATLAB/SIMULINK/PSAT environment was carried out. The security situation of the system with incorporation of Interline Power Flow Controller (IPFC) was determined. Erstwhile, Contingency Severity Index (CSI) based on Performance Index (PI) of Real Power was employed to determine the optimal location of the IPFC, while the optimal sizing (percentage compression) was carried out using the sequential quadratic programming method. The electric power network was subsequently modelled with- and without the IPFC. Hence, the static security of the base case scenario (uncompensated) and IPFC compensated system models with various contingency scenarios were assessed.