Document Type : Research Paper


1 Electrical Engineering, College of Engineering, University of Mosul, Mosul, Iraq

2 Electrical Engineering Department, Collage of Engineering, University of Mosul, Mosul, Iraq

3 Computer Science Department, Collage of Electrical and Space Engineering, Luleå University of Technology, Sweden


Electrical power systems operate at 50 Hz. However, generation loss, a sudden increase in loads, or faults in the system cause disturbances and deviations that destabilize the frequency of electrical power systems. Therefore, there is a need to study and improve the frequency stability of electrical power systems during disturbances. The present study examines improving the frequency stability of electrical power system, using a solar photovoltaic (PV) system, a battery energy storage system (BESS), and underfrequency load-shedding (UFLS) to estimate and control the frequency.The proposed method was tested on a standard Institute of Electrical and Electronics Engineers' (IEEE®) 9-bus system that was simulated in MATLAB® Simulink. The simulation results indicate that the used method significantly stabilizes the frequency of electrical power system.


Main Subjects

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