Determination of PSS Location Based on the Control Structure Design Indices

: Most available control theories assume that a control structure is given at the outset, so they do not use the provisions of control structure design. Controlstructure design tries to close the gap between theory and practice. In fact control structure design helps the designer to utilize the maximum capability of the system.Control structure design is clearly more important in large-scale systems. Power systems are large-scale systems that are subject to low frequency oscillations. These oscillations degrade the system performance. Power system stabilizers (PSSs) are used to improve the performance of power systems. Determination of the suitable signal for applying to power system stabilizer and determination of the PSS locations is an important issue in power systems. Some control structure design measures are introduced in this paper. These measures are used to determine the inputs, outputs and control configuration based on a systematic procedure that reduces the reliance on experiment and the art of the designer. Applicability of these measures in power systems is shown. Selection of a suitable signal for applying to a power system stabilizer and determination of the PSS locations are the major contributions of this paper.