https://repositorio.ufu.br/handle/123456789/18974 Tue, 26 May 2026 04:35:51 GMT 2026-05-26T04:35:51Z https://repositorio.ufu.br/handle/123456789/48680 Title: Análise de Sistemas de Distribuição com REDs Utilizando Python e DSS: Comparação entre Armazenamento Centralizado e Distribuído Abstract: This work analyzes the impact of battery energy storage allocation in distribution networks with distributed generation, comparing centralized and distributed strategies in terms of voltage violation mitigation. The study models a low-voltage distribution feeder with distributed photovoltaic generation, single-phase loads, and representative time-varying demand and generation profiles. To do so, it integrates quasi-static time-series simulations developed in Python with OpenDSS and formulates an optimization problem with discrete and continuous decision variables, solved through a genetic algorithm. The objective function seeks to minimize steady-state voltage violation indicators while considering technical constraints related to the size and placement of the storage systems. The results show that the insertion of distributed generation without storage worsens the electrical performance of the network, increasing the occurrence of overvoltages and expanding the violation indexes. The centralized strategy significantly reduces these problems, eliminating critical violations and substantially decreasing precarious violations, although residual violations remain. In contrast, the distributed strategy presents superior performance, fully eliminating the violations in the evaluated arrangements and providing more homogeneous voltage support along the feeder. However, the results also indicate that progressively increasing the number of batteries does not lead to proportional gains, which suggests diminishing marginal returns. It is concluded that distributed storage is more effective in ensuring voltage compliance, whereas the centralized solution provides relevant improvement with lower installed capacity. Fri, 20 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48680 2026-03-20T00:00:00Z https://repositorio.ufu.br/handle/123456789/48614 Title: Análise dos Impactos da Modernização da Iluminação Pública com Tecnologia LED: Estudo de caso do Município de Ituiutaba - MG Abstract: With the growing demand for sustainable and economically viable solutions in the electrical energy sector as a whole, and considering that public lighting represents a significant share of a municipality’s energy consumption, this study aims to evaluate the impacts caused by the replacement of traditional public lighting lamps with LED lamps. Owing to technological advances, LED lamps have proven to be much more efficient, durable, and safer solutions when compared to sodium vapor and mercury vapor lamps, which are the most conventionally used technologies in public lighting systems. Throughout this research, the results obtained demonstrate how this replacement can provide significant benefits for the municipality, such as reduced energy consumption, lower maintenance costs, increased safety, and greater durability. Fri, 13 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48614 2026-03-13T00:00:00Z https://repositorio.ufu.br/handle/123456789/48472 Title: Caracterização harmônica de unidades consumidoras do grupo A Fri, 27 Feb 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48472 2026-02-27T00:00:00Z https://repositorio.ufu.br/handle/123456789/48011 Title: Explorando a integração de baterias em sistemas fotovoltaicos: Uma perspectiva analítica. Abstract: The use of batteries combined with photovoltaic generation systems allows consumers and businesses to make more advantageous choices and protect themselves against high electricity bills. Recognition of the importance of integrating Renewable Energy Sources and Energy Storage Systems (ESS) into electrical systems has been steadily growing in recent years. Due to the intermittent nature of renewable energy sources, such as wind and solar, the feasibility of their large-scale integration depends considerably on energy storage. From an energy efficiency standpoint, it would also be highly advantageous, as the system would be using stored energy to meet peak demand times, rather than relying exclusively on the generation system. This would allow the generated energy to be directed towards other purposes, resulting in savings for the system as a whole. The central purpose of this study is to assess the technical feasibility of implementing an Energy Storage System (ESS), referred to as BESS (Battery Energy Storage System), supplied by a solar photovoltaic generation system. The objective is to discharge the batteries' energy into the grid during peak hours, reducing contracted demand during this period by two-thirds. This approach is justified by the fact that many medium-sized consumers face high costs during peak energy demand periods. Tue, 12 Nov 2024 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48011 2024-11-12T00:00:00Z