Design of Fractional Order Power System Stabilizer using Grey Wolf Optimization Technique for improvement of Transient Stability

Abstract

The Grey wolf optimizer technique is used in this paper to design a fractional order power
system stabilizer for improving the transient stability of a multi-machine power system. The
Grey Wolf Optimization algorithm is used to tune the gain, time constants, and fractional
order of this controller. The proposed controller is implemented in MATLAB/Simulink in a
10 machine 39 bus system with a three-phase fault as a disturbance. To demonstrate the
effectiveness of the proposed controller, parameters such as rotor angle deviation, rotor speed
deviation, and electrical power deviations are considered. The performance of this controller
is compared to that of a GWO-based Integer order power system stabilizer (GWOIOPSS); the
results show that GWOFOPSS is more effective at damping power system oscillations than
GWOIOPSS.