Impacto de geração distribuída desequilibrada nos índices de desequilíbrio de tensão de sistemas de distribuição

Abstract

Voltage imbalance is one of the major challenges in electrical distribution systems, potentially compromising power quality, increasing energy losses, and reducing equipment lifespan. The increasing integration of Distributed Generation (DG) presents opportunities to mitigate this issue but also introduces new operational challenges. Through computational simulations in OpenDSS integrated with MATLAB, this study investigates the impact of the unbalanced active power injection on voltage imbalance indices in different buses of the IEEE 123 and IEEE 34 test systems. A probabilistic approach is adopted to evaluate how variations in injected power influence voltage profiles, power flows, and grid stability. The results indicate that the strategic allocation of DG can significantly reduce the Voltage Unbalance and improve voltage regulation, leading to a more efficient and reliable system. However, it was observed that an inadequate selection of injection points may result in adverse effects, such as increased asymmetry and voltage profile distortions. It is concluded that optimizing DG, combined with dynamic control strategies and reactive power compensation techniques, is essential to maximize the benefits of distributed generation and enhance power quality in distribution systems.