A new design method of PSS for power system including DFIG-based wind turbines

Considering the steady increase of doubly fed induction generator (DFIG) integration into power systems, electrical systems generation's study becomes a vital issue. This paper investigates the impact of DFIG-based wind generation on power system electromechanical oscillations. The inter-area modes, which have a significant adverse effect on system damping, are examined for three cases. The system eigenvalue is carried out without and with wind penetration and oscillations modes are identified using the participation factor technique. The power system stabilizer (PSS) parameters are designed using a new method called the Rao-1 algorithm. The nonlinear simulations and eigenvalue analysis demonstrate that the integration of DFIG into the two-area power system creates an oscillatory instability. The stability can be restored via the coordination of automatic voltage regulator (AVR) and PSS.