Improved Virtual Inertia Emulation for Frequency Stability Enhancement in Microgrid System

Khaled M. Alawasa, Banan K. Malahmeh, Ziyad S. Almajali

Abstract


The increased integration of renewable energy sources (RESs) in today’s microgrids leads to many problems associating with the low inertia nature of power electronic devices using to equipped these systems with the main grid. However, virtual inertia control (VIC) is considered as one of the most suitable control schemes used for controlling microgrids due to its ability to keep the frequency stability in any isolated electrical systems. This paper presents an improved technique for VIC for the battery energy storage device based on derivative and PI control schemes to strengthen the frequency stability in microgrid systems under large penetration levels for RERs. The simulation and system modeling are implemented through the use of MATLAB/Simulink software environment. In terms of the results, they are compared with the conventional VIC, enhanced VIC with damping properties, and the self-adaptive VICunder various operating conditions that involve the changes that occur to system parameters and the changes in penetration levels of renewable energy resources.

Keywords


Microgrid; Frequency Stability; Virtual inertia; renewable energy source; Fuzzy-logic controller.

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v12i4.12783.g8593

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