Cuckoo Search Algorithm for design of decentralized load Frequency based –PID Controller

In this Paper, a novel approach based on Cuckoo search optimization, with dominant eigen value shift for designing robust decentralized load frequency control system for interconnected power system is presented. A proportional integral – derivative (PID) controller is considered to exemplify the optimum parameter search. To demonstrate the robustness of the obtained controller, a two-area non reheat thermal system, equipped with such optimized tuned controller, is tested under different operating conditions and parameter Changes. The optimal PID parameters search is formulated as an optimization problem with a standard eigen value objective function. Its effectiveness is shown through comparison with the well-known conventional integral controller. The eigen value based performance index is considered. The simulation results demonstrate the enhancement in the dynamic response of the two area power system. Keywords— Decentralized control, load frequency control, Power system, proportional-integral-derivative controller, stochastic particle swarm optimizer. Cuckoo search algorithm