Active disturbance rejection control — Based load frequency controller of interconnected power systems involving wind power penetration

The load frequency control (LFC) problem is becoming more significant today in accordance with increasing grid size, changing structure, integration of renewable energy sources, and complexity of interconnected power systems. In this paper the assessment of Active Disturbance Rejection Controller (ADRC) based LFC is presented. This control algorithm offers a new design concept and inherently robust controller building block that requires very little information about the system. It actively estimates and compensates for the effects of the unknown dynamics and disturbances. The control strategy was applied to a single isolated power area and then to three interconnected control areas. The simulation results showed that the used controller was able to maintain a robust performance and grid stability by minimizing the effect of disturbances caused by load variation and wind power penetration.