Simulation-Based Assessment of Power Losses and Stability in Distribution Networks with Highly Integrated Solar Photovoltaic Systems

In this article, the power losses and the impact on network stability of highly integrated solar photovoltaic (PV) systems in distribution networks were simulated using ETAP and MATLAB/Simulink software. The IEEE 33-bus test system was used as the research object, and the PV integration level was varied from 0% to 100%. The results showed that optimally placed PV systems can reduce power losses by 50–70%, improve the voltage profile, and enhance network stability. Under the conditions of Uzbekistan (high solar potential), this approach is of great importance in increasing energy efficiency and expanding the share of renewable energy.

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