Artificial Bee Colony Based Power System Stabilizer Design for a Turbo-Generator in a Single-Machine Power System

This paper presents an Artificial Bee Colony (ABC) algorithm for optimal tuning of the Power System Stabilizer (PSS) in a Single-Machine InfiniteBus (SMIB) power system. The design problem of robustly tuning PSS parameters is formulated as an optimization problem according to the time domainbased objective function which is solved by the ABC technique that has strong ability to find the most optimistic results. To ensure performance and robustness of the proposed control strategy to stabilize low frequency oscillations The design process takes a wide range of operating conditions. The effectiveness of the proposed ABC based PSS is demonstrated on a SMIB power system through the nonlinear time domain simulation and some performance indices under different operating conditions in comparison with the particle swarm optimization based tuned stabilizer and conventional PSS. Results evaluation show that the proposed stabilizer achieves good robust performance for wide range of system operation conditions and is superior to the other PSSs. Moreover, the proposed control strategy has simple structure, easy to implement and tune which can be useful for the real world complex power system.