Fractional PSS For Low Frequency Oscillation Damping of Variable Solar Penetrated Power System

This work present fractional power system stabilizer (FPSS) to damp low frequency oscillations in power system with varying solar penetration FPSS provides additional damping torque in rotor through excitation system of generator for damping action. The power system is subjected to varying SPV generations and eigen analysis with time domain stimulations being carried out to justify the control action. FPSS gains are tuned by squirrel search Algorithm (SAA) techniques, and compared with PSO and DE techniques. The low frequency oscillations resulting from different SPV penetrations are executed with step and random solar power variations proposed fractions PSS Action has been implemented with ITAE based minimization objective function by DE, PSO and SSA algorithm. It is observed that proposed SSA optimized FPSS action can stabilize oscillations much better than other techniques pertained to variations in solar PV generations.