Robust fractional-order proportional-integral controller tuning for load
frequency control of a microgrid system with communication delay
Abstract
The integration of renewable energy resources and uncertainties in power
system models pose significant challenges to load frequency control
(LFC). To tackle these challenges, controller tuning with robustness
constraints provides an efficient solution. In this paper, we propose a
novel approach for controller tuning in LFC of microgrid systems with
communication delay. Our approach converts the tuning task into an
algorithm that solves two parametric equations subject to robustness
constraints, resulting in high accuracy and computational efficiency. We
use a perturbed scenario with uncertain microgrid model gains and
communication delay to illustrate the tuning efficiency. Simulation
examples, including comparisons with classical tuning methods,
demonstrate the effectiveness of our proposed method.