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Tuning and location of PSS in multimachine power system with state feedback control for electromechanical oscillation damping control

Abstract:

Tuning and location the power system stabilizers (PSS) require complex methodologies, especially when additional controls are added in the group automatic voltage regulator (AVR) and PSS. The residue method provides a possible way to acquire the location and tuning parameters of the PSS. This paper introduces an additional linear control loop, called state feedback (SFC), to the AVR, which increases the damping of oscillation modes in power systems. Besides, the artificial neural network (ANN) was executed in Matlab scripts asynchronously to tune the PSS. The active power and reactive power of the generator were considered in the tuning process, eliminating the need to calculate the residues of each oscillation mode. To verify its performance, the proposed methodology was subjected to dynamic simulations and a small-signal stability analysis. The results show that our method achieved robust results on tuning and location of the PSS in multimachine power systems.