Optimal PIDA Load Frequency Controller Design for Power Systems via Flower Pollination Algorithm

摘要

The load frequency control (LFC) is normally operated under the proportional-integral-derivative (PID) feedback control loop. However, the proportional-integral-derivative-accelerated (PIDA) controller, firstly proposed in 1996, performed superior response to the PID especially for higher order systems. The optimal PIDA controller design for the LFC is presented in this paper. Based on modern optimization context, the flower pollination algorithm (FPA) is applied to design the optimal PIDA by searching for their appropriate parameters. The method is applicable to power systems with non-reheated and reheated turbines. The responses of the LFC controlled by the PIDA will be compared with those controlled by the PID. Simulation results show that both FPA-based PID and PIDA controllers can improve the damping of the power systems. In contrast, the FPA-based PIDA controller outperforms the FPA-based PID controller by giving less damping in power system responses.