Power System Stability Including Wind Farm with Statcom Based Pi Fractional Controller

Abstract

In this paper, a new static synchronous compensator (STATCOM) based PI fractional control technique is proposed. The system equations were transformed to the normal form, then, design a fractional order, finally, we propose adaption laws for switching gains. The control objective is to enhance stability and improve the dynamic response of the multi-machine power system including wind farm. Simulations are carried out to show the effectiveness of the proposed method. Small signal stability characteristics of the system are analyzed in presence of changes in reference mechanical torque. By simulation, the proposed method is compared with the conventional PI controller. It is shown that the proposed method has lower spike and shorter reaching time than PI STATCOM.