Reviewing the Impact of FACTS Devices to Reduce Losses and Voltage Profile in the Pool Market

In this paper, a generalized Lagrangian-based algorithm (TRALM) and gravitational search algorithm (GSA) are used to solve the Optimal Load Distribution Problem (OPF) in the presence of FACTS equipment. Four TCSC, TCPST UPFC and SVC equipment’s have been tested. Modeling of FACTS equipment is based on power injection method. To optimally manage production, losses and voltage profiles, a four-objective function is formulated: Minimum fuel cost, Minimum investment cost of equipment, Minimum loss of transmission and voltage profile improvement and formulated in a single-objective optimization problem. To achieve the optimal point due to the contradiction of the goals, a series of coefficients are used to normalize the objective function. The solution is that the GSA algorithm first randomly determines the FACTS equipment configuration and normalization coefficients, and after installation, the TRALM algorithm solves the problem in the presence of FACTS equipment in the common market. The test results on the BUSIEEE 14 test system indicate that the algorithm has a good effect on the problem objectives.