Título:	Analysis of the impact of integrating distributed energy resources on distribution system reliability
Outros títulos:	Análise do impacto da integração de recursos energéticos distribuídos na confiabilidade de sistemas de distribuição
Autor(es):	Gomes, Rebeka Passos
Orientador(es):	Ferreira Filho, Anésio de Leles
Coorientador(es):	Domingues, Elder Geraldo
Assunto:	Recursos energéticos Geração de energia fotovoltaica Microrredes Simulação de Monte Carlo Confiabilidade (Engenharia)
Data de publicação:	9-Jul-2026
Data de defesa:	29-Nov-2024
Referência:	GOMES, Rebeka Passos. Analysis of the impact of integrating distributed energy resources on distribution system reliability. 2024. 142 f., il. Dissertação (Mestrado em Engenharia Elétrica) — Universidade de Brasília, Brasília, 2024.
Abstract:	The reliability evaluation of microgrids presents greater challenges than traditional power systems, due to their more complex structure and operating modes. In this sense, this study presents a methodology to identify the technical impacts that microgrids composed of photovoltaic distributed generation and Battery Energy Storage Systems can cause in the evaluation of the reliability of distribution systems. The study utilized probabilistic simulations employing the Monte Carlo method. The algorithm was initially validated using a system with an established analytical solution. Subsequently, scenarios with different levels of photovoltaic generation (PV) and battery energy storage system (BESS) were simulated in a real Brazilian distribution network to evaluate their effects and identify those that bring the greatest benefits to system reliability. It was implemented a time-varying islanding operation, where the power supply areas of the islanding operation are dynamically changed according to the loads and the distributed energy resources (DERs) output. The code validation results revealed a maximum error of -4.10%, demonstrating the code’s robustness and reliability. The results of applying the method in the case study show that, in scenarios with only the insertion of a PV system, the benefits in reliability, when varying the penetration level, are minimal for the microgrids and the complete feeder. Alternatively, changing the penetration of BESS influences the battery performance by ensuring a high and stable state of charge (SoC), which is crucial for minimizing instabilities and enhancing the distribution system’s reliability in the context of PV integration. However, for penetrations exceeding 50%, there is minimal further variation in stability due to the stabilization of the State of SoC. The indices that assess the microgrid performance during time-varying islanding operations indicate an enhancement in the utilization of loads and available DER during failure scenarios, with negligible additional benefits of BESS at elevated penetration levels.
Unidade Acadêmica:	Faculdade de Tecnologia (FT) Departamento de Engenharia Elétrica (FT ENE)
Informações adicionais:	Dissertação (mestrado) — Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Elétrica, Programa de Pós-Graduação em Engenharia Elétrica, 2024.
Programa de pós-graduação:	Programa de Pós-Graduação em Engenharia Elétrica
Aparece nas coleções:	Teses, dissertações e produtos pós-doutorado

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