Analysis of Stability Regions Load Frequency Control with Time Delay Systems Considering Rotor Speed Control

This paper presents the stability regions of the time-delayed load frequency control (LFC) system enhanced by dynamic participation of wind turbine (WT). Although the integration of WT into LFC enhances the dynamic stability of the system, the complexities of the system increase. Therefore, it is crucial to determine the stability regions and boundaries of the Proportional-Integral (PI) controller in the parameter space for the LFC system including WT dynamics. In this study, the stability regions of the system in the controller parameter space are determined using the stability boundary locus method. The obtained stability regions are verified by time-domain simulations in MATLAB/Simulink. The obtained findings show that the integration of WT including inertia control and deloading control loops into LFC system improves the stability regions.