Coordinated design of power system stabilizers and static VAR compensators in a multi-machine power system using genetic algorithms

Document Type : Original Article

Authors

1 Faculty of Engineering, University of Helwan, Cairo, Egypt.

2 Benha High Technology Institute, Benha University, Egypt.

Abstract

Abstract:
This paper presents a procedure to coordinated design of Power System Stabilizers
(PSSs) and Static VAR Compensators (SVCs) in a multimachine power system. The
aims of the proposed method are to find the best location and the optimal parameters of
these compensators in order to improve the steady state and transient performances and
also to increase the system damping over a wide range of operating conditions. The
objective function of the Genetic Algorithm (GA) allows the selection of the PSSs and
SVCs to shift critical closed loop eigenvalues to the left side in the complex s-plane.
The multimachine power system considered in this study consists of nine buses, three
generating units (steam, hydro and nuclear) and three static loads. Digital simulation
studies show that the proposed design procedure provides good damping for the power
system at different operating conditions, and moreover improves steady-state and
transient performance of the system.

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