Frequency Control in Power Systems via Reduced Order Model Based GADRC Approach with Communication Time Delay

Abstract

A higher-order power system is prone to deviate from the quality performance due to the frequent load fluctuations, parametric uncertainties in the existing system, variations in the model structure, etc. Because of this, the frequency stability in such power system becomes a prime factor of concern, and an appropriate control strategy must be employed to accomplish the load frequency control (LFC). Since the full order controllers encounter significant computational and structural setbacks, lower order controllers are utilized to investigate the performance of such high-order power systems. In the present study, the reduced order generalized active disturbance rejection control (RDGADRC) approach incorporating the model order reduction technique has been developed and employed for the single area power system. The presented technique inherits the advantages of two well-established GADRC and model order reduction techniques. The efficacy of the proposed technique is authenticated based on the communication delay handling capacity, robustness against parametric variations, and disturbance rejection capability.