Congestion management of power system with interline power flow controller using disparity line utilization factor and multi-objective differential evolution

Abstract

The restructuring of the electric power market has led to complex power transmission congestion problems. Additionally, scheduled power flows in the transmission line, as well as spontaneous power exchanges have also risen sharply in recent years. The proper placement of IPFC can improve the transmission line congestion problem to a great extent. This paper proposes a disparity line utilization factor (DLUF) for the optimal placement of IPFC to control the congestion in transmission lines. DLUF determines the difference between the percentages of Mega Volt Ampere utilization of each line connected to the same bus. The IPFC is placed in the lines with maximum DLUF. A multiobjective function consisting of reduction of active power loss, minimization of total voltage deviations, minimization of security margin and minimization of installed IPFC capacity is considered for the optimal tuning of IPFC using differential evolution algorithm. The proposed method is implemented for IEEE-30 bus test system under different loading conditions and the results are presented and analyzed to establish the effectiveness on the reduction of congestion.