A Novel Approach for Robust H PSS Design According to Various Power System Operation Conditions

This paper presents a novel approach to design of robust H¥ Power System Stabilizer (HPSS) by using the feedback control approach based on multiplicative perturbation in an interconnected power system. The main objectives of this research are to reduce the oscillations and to increase the overall robust performance of the system. In the proposed HPSS design, variations of the system parameters, various operating conditions ofthe system loads and topology (which are called system uncertainties) are represented by the multiplicative uncertainties model. This approach applies an independent design methodology to the so-called equivalent subsystems along with the well-known Small Gain theory and the robust stability conditions in the M - D setup. In this paper, the performance of the proposed HPSS is investigated in the standard benchmark four generatorssystem in comparison with the conventional PSS. The simulation results of rotor speed deviation of generators with the proposed HPSS and the conventional PSS verify the effectiveness of the proposed HPSS.

A Novel Approach for Robust H PSS Design According to Various Power System Operation Conditions Keywords:

Power System Stabilizer , Robust Control , Multi-machine Power Systems