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Ayad Fadhil Mijbas,Bahaa Aldin Abas Hasan,Hussein Ali Salah 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4
In this paper, the Power system stabilizer (PSS) and (PID) are enhanced with a Chaotic Particle Swarm Optimization (CPSO) Damping Controller in order to suppression the Low-Frequency Oscillations (LFO) in a Single Machine Infnite Bus (SMIB) power system. Chaotic particle swarm optimization (CPSO) is used to tune the parameters of the PSS-PID. The design damping controller is an optimized lead-lag controller, which extracts the speed deviation of the generator rotor and generates the output feedback signal, which aims to modulate the reference values of the PSS-PID controller to achieve the best damping of LFO. In order to search the better damping option, the damping controller is applied to a series of the PSS-PID and the results are compared in two cases (PSS without PID and PSS with PID). The efectiveness of the proposed controller is achieved by time-domain simulation results in MATLAB environment, using three diferent operational conditions (Nominal, Light, and heavy). In addition, the results obtained from the PSS-PID were robust and more efcient compared to the PID only in terms of oscillations damping, overshoot minimizing and settling time reducing.