TY - JOUR AU - Magaji, N. AU - Mustafa, M. W. AU - Dan-Isa, Ado AU - Lawan, A. U. PY - 2013 TI - Static and Dynamic Location of Variable Impedance Devices for Stability Studies JF - American Journal of Applied Sciences VL - 10 IS - 5 DO - 10.3844/ajassp.2013.497.506 UR - https://thescipub.com/abstract/ajassp.2013.497.506 AB - This study used the concept of model controllability and observability in product form called residue factor to find the best location of Thyristor-Controlled based series and shunt devices called variable impedance devices. The success of this controller depends on its best possible location in busbar or line of power system network. The method is based on the relationship between the parameters of variable impedance devices to the vital modes. Linearization of non linear model of Power system and the thyristors based FACTS devices provide mens of computing residue factor and singular value factor. The location of variable impedance or thyristors based controllers have been calculated for the base case only. The usefulness of the these methods of placement considered 16 machines, 68 bus systems.