Parameterization of active disturbance rejection controller for load frequency control

Abstract

Active disturbance rejection control (ADRC) has gained significant attraction due to its simple tuning method and robustness against process parameter variations, whether the plant is linear or non-linear, time-varying or time-invariant. In load frequency control, the use of ADRC is proposed to regulate the area control error, frequency error and tie-line error in the presence of internal dynamics and external disturbance. This paper presents a study on the effects of state observer bandwidth, controller bandwidth and sampling period on the performance of the ADRC based load frequency control of single- and multi- area power systems. The study gives good insight in choosing controller parameters for ADRC based LFC.