Power System Stabilizers: A Robustness Study
Keywords:
Hydroelectric Generation, Power System Stabilizer, Robust Stability, Unstructured ModelingAbstract
A Power System Stabilizer (PSS) is a complementary excitation controller of the synchronous generator used for damping electromechanical oscillations present in an electric power system. Also, the PSS is a dynamic system subject to disturbances and uncertainties, which can lead to unstable system operating conditions. In this paper, uncertainties models of the PSS are obtained using an unstructured modeling approach. In addition, a robust stability test is proposed to found the stability bounds for a family of PSS. The proposed test is verified using computational simulations and the results are discussed in detail.