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.

Solar photovoltaic systems, power losses, distribution networks

Upadhyay T. et al. Simulation and analysis of solar photovoltaic penetration in distribution system using ETAP. Materials Today: Proceedings, 2022.

Materials of the Ministry of Energy of the Republic of Uzbekistan (Renewable Energy Strategy).

Majeed I.B. Reverse Power Flow Due to Solar Photovoltaic in the Low Voltage Distribution Network. IEEE, 2023.

Adegoke S.A. Optimal placement of distributed generation to minimize power losses. PMC, 2024.

Siregar R.H. Minimizing Power Losses for Distributed Generation using ETAP and MATLAB. Energies, 2023.

Classic literature on power systems (Grainger J.J., Stevenson W.D.).

Abdelgadir A. Impact of high penetration of PV generation on power system. UTC Scholar, 2020.

Olabode O.E. Impact of integrating type-1 distributed generation. Springer, 2024.

Tandon A. Battery Energy Storage System Allocation in the IEEE 33 Bus System. E3S Web of Conferences, 2024.