TITLE:
Analysis of the Modeling of the Influence of Decentralized Solar Energy PV on the Intensity of Short-Circuit Currents of the Power Electric System
AUTHORS:
Anthony Bassesuka Sandoka Nzao
KEYWORDS:
Analysis, Modeling, Simulation 2D, Fractal Dimensions, Integration, Decentralized PV Solar Energy, Kirchhoff’s Laws, PV Generators, Inverter, Power Electrical System, Short-Circuit Current, Short-Circuit Power
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.15 No.9,
September
26,
2025
ABSTRACT: Several advantages are linked to the integration of renewable decentralized production sources into electrical networks, including the reduction of line losses, etc. However, the integration of decentralized energies, particularly solar PV, can lead to variations in the direction or amplitude of currents in steady state, variations in short-circuit currents, changes in voltage, variations in measured impedances. These variations can have a negative influence on the proper functioning of the protection plan, including protection blinding or false tripping. This article presents a simulation model to predict the influence of the integration of decentralized solar PV energies on the intensity of short-circuit currents and the short-circuit power at a node of a power electrical system. The mathematical equations developed for modeling the energy elements of the electrical network in which the solar PV RED is integrated were based on Kirchhoff’s laws and on the current-voltage characteristic of the modules. The simulation model using experimental data from a grid-connected photovoltaic system installed in DR Congo was compared with results from existing literature. Simulations 2D based on proposed models were developed as well as the verification of the consistency of the different models, by comparing the fractal dimensions of the results of our program with those of the figures obtained experimentally. The results obtained show that the integration of PV solar generators into the grid has a direct impact on the short-circuit current and the short-circuit power at the connection point. The aspects developed in this article could have direct implications in practical applications in the engineering and design of grid-connected PV systems.