Abstract
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.
Highlights
The literature (Pal and Chaudhuri, 2005; Magaji and Mustafa, 2009a; 2009b; Larsen et al, 1995; Hassan et al., FACTS devices based on Variable impedance 2010; Mustafa and Magaji, 2009; Sadikovic et al, 2006; devices or thyristors based controllers includes Static VAR Compensators (SVCs) and Thyristor-Controlled
Line 51-50 real power flow which is a local signal has been taken as the feedback signal for the Thyristor-Controlled Series Compensator (TCSC) supplementary controller
Current magnitude of Line 27-28 from bus 27 is taken as the feedback signal for the Static Var Compensator (SVC) supplementary controller
Summary
The literature (Pal and Chaudhuri, 2005; Magaji and Mustafa, 2009a; 2009b; Larsen et al, 1995; Hassan et al., FACTS devices based on Variable impedance 2010; Mustafa and Magaji, 2009; Sadikovic et al, 2006; devices or thyristors based controllers includes Static VAR Compensators (SVCs) and Thyristor-Controlled. System damping (Nazarpour et al, 2006; Magaji and Mustafa, 2010) Positioning of these devices n large power system is very importanc in terms of controlling of system modes, there is need to consider several conditions in dealing with this difficulty. Among the factors to take into accounts are (Pal and Chaudhuri, 2005; Magaji and Mustafa, 2009a; 2009b; Larsen et al, 1995; Hassan et al, 2010): Sadikovic et al (2006) adopted the approch of location index for efficient damping, to find suitable location for damping inter-area mode of oscillations.
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