Load Frequency Regulation using Linear Active Disturbance Rejection Control Technique

Abstract

In this paper a Linear Active Disturbance Rejection Control (LADRC) technique is utilized to control the fluctuation in frequency for single area and two- area interconnected power system. LADRC consists of feedback controller and Extended State Observer. The total disturbance comprising of internal ambiguity and external perturbation in the plant is estimated in real time with the help of ESO and these estimated total disturbance is compensated by feedback controller. The parameters of LADRC are simplified into two bandwidths using pole placement technique i.e. observer bandwidth and controller bandwidth. The Particle Swarm Optimization algorithm is utilized to find out these two bandwidth and then the optimized value is used in LADRC controller. The effectiveness of the proposed LADRC technique in LFC problem is authenticated by the recently reported technique in the literature. The disturbance rejecting capability and the robustness toward the parameter variations of the proposed method are also shown by the extensive simulation results.