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Sobre

Sobre

Justino Miguel Rodrigues nasceu em Penafiel (Portugal) a 9 de Setembro de 1985. Obteve o grau de Mestre em Engenharia Eletrotécnica e de Computadores pela Faculdade de Engenharia da Universidade do Porto em Julho de 2010.

Em Dezembro de 2010 integrou o INESC TEC como membro da equipa de investigação do projeto REIVE – Redes Elétricas Inteligentes com Veículos Elétricos - com vista ao desenvolvimento de modelos de simulação computacionais de protótipos de conversores eletrónicos incorporando funcionalidades de controlo avançadas desenvolvidas no âmbito desse projeto.

Integrou em 2013 o projeto COMUTE-DC, onde participou no desenvolvimento da infraestrutura laboratorial para implementação de uma rede DC multi-terminal em escala reduzida, e foi responsável pela realização dos ensaios laboratoriais de validação das funcionalidades avançadas direcionadas para redes DC multi-terminal desenvolvidas no âmbito do projeto.

Integra atualmente o projeto SENSIBLE desde 2016, onde ficou encarregue do desenvolvimento de modelos de simulação computacionais para a validação da integração de sistemas de armazenamento de energia em redes de baixa tensão, tendo em vista a capacidade de sobrevivência a cavas de tensão e operação em ilha. Está igualmente envolvido no desenvolvimento de algoritmos de otimização para a gestão ótima de unidades de armazenamento de energia integradas nas redes de média tensão e baixa tensão que integrarão o demonstrador final. 

Transversal a todas atividades anteriores, é também responsável pelo desenvolvimento do software Lab Device Manager, projetado para facilitar e tornar mais acessível a implementação, gestão e monitorização de experiências laboratoriais utilizando todos os equipamentos e infraestrutura disponível no Laboratório REIVE.

Do trabalho desenvolvido foi possível desenvolver conhecimentos na área da programação e automação, que constituem um complemento valioso à formação base em sistemas elétricos de energia e em energias renováveis.

Detalhes

Detalhes

  • Nome

    Justino Miguel Rodrigues
  • Cluster

    Energia
  • Cargo

    Investigador Auxiliar
  • Desde

    13 dezembro 2010
012
Publicações

2021

Fault-Ride-Through Approach for Grid-Tied Smart Transformers without Local Energy Storage

Autores
Rodrigues, J; Moreira, C; Lopes, JP;

Publicação
ENERGIES

Abstract
The Smart Transformer (ST) is being envisioned as the possible backbone of future distribution grids given the enhanced controllability it provides. Moreover, the ST offers DC-link connectivity, making it an attractive solution for the deployment of hybrid AC/DC distribution grids which offer important advantages for the deployment of Renewable Energy Sources, Energy Storage Systems (ESSs) and Electric Vehicles. However, compared to traditional low-frequency magnetic transformers, the ST is inherently more vulnerable to fault disturbances which may force the ST to disconnect in order to protect its power electronic converters, posing important challenges to the hybrid AC/DC grid connected to it. This paper proposes a Fault-Ride-Through (FRT) strategy suited for grid-tied ST with no locally available ESS, which exploits a dump-load and the sensitivity of the hybrid AC/DC distribution grid's power to voltage and frequency to provide enhanced control to the ST in order to handle AC-side voltage sags. The proposed FRT strategy can exploit all the hybrid AC/DC distribution grid (including the MV DC sub-network) and existing controllable DER resources, providing FRT against balanced and unbalanced faults in the upstream AC grid. The proposed strategy is demonstrated in this paper through computational simulation.

2020

Smart Transformers as Active Interfaces Enabling the Provision of Power-Frequency Regulation Services from Distributed Resources in Hybrid AC/DC Grids

Autores
Rodrigues, J; Moreira, C; Lopes, JP;

Publicação
APPLIED SCIENCES-BASEL

Abstract
Smart Transformers (STs) are being envisioned as a key element for the controllability of distribution networks in a future context of Renewable Energy Source (RES), Energy Storage System (ESS) and Electric Vehicle (EV) massification. Additionally, STs enable the deployment of hybrid AC/DC networks, which offer important advantages in this context. In addition to offering further degrees of controllability, hybrid AC/DC networks are more suited to integrate DC resources such as DC loads, PV generation, ESS and EV chargers. The purpose of the work developed in this paper is to address the feasibility of exploiting STs to actively coordinate a fleet of resources existing in a hybrid AC/DC network supplied by the ST aiming to provide active power-frequency regulation services to the upstream AC grid. The feasibility of the ST to coordinate the resources available in the hybrid distribution AC/DC network in order to provide active power-frequency regulation services is demonstrated in this paper through computational simulation. It is demonstrated that the aforementioned goal can be achieved using droop-based controllers that can modulate controlled variables in the ST.

2020

Optimal Load Restoration in Active Distribution Networks Complying With Starting Transients of Induction Motors

Autores
Sekhavatmanesh, H; Rodrigues, J; Moreira, CL; Lopes, JAP; Cherkaoui, R;

Publicação
IEEE TRANSACTIONS ON SMART GRID

Abstract
Large horsepower induction motors play a critical role as industrial drives in production facilities. The operational safety of distribution networks during the starting transients of these motor loads is a critical concern for the operators. In this paper, an analytical and convex optimization model is derived representing the starting transients of the induction motor in a semi-static fashion. This model is used to find the optimal energization sequence of different loads (static and motor loads) following an outage in a distribution network. The optimization problem includes the optimal control of the converter-based DGs and autotransformers that are used for the induction motor starting. These models together with the semi-static model of the induction motor are integrated into a relaxed power flow formulation resulting in a Mixed-Integer Second Order Cone Programming (SOCP) problem. This formulation represents the transient operational limits that are imposed by different protection devices both in the motor side and network side. The functionality of the proposed optimization problem is evaluated in the case of a large-scale test study and under different simulation scenarios. The feasibility and accuracy of the optimization results are validated using I) off-line time-domain simulations, and II) a Power Hardware-In-the-Loop experiment.

2020

Planning of distribution networks islanded operation: from simulation to live demonstration

Autores
Gouveia, J; Gouveia, C; Rodrigues, J; Carvalho, L; Moreira, CL; Lopes, JAP;

Publicação
ELECTRIC POWER SYSTEMS RESEARCH

Abstract
The integration of distributed Battery Energy Storage Systems (BESS) at the Medium Voltage (MV) and Low Voltage (LV) networks increases the distribution grid flexibility to deal with high penetration of Renewable Energy Sources (RES). In addition, it also enables the deployment of key self-healing functionalities, which allow the islanded operation of small sections of the distribution network. However, new planning and real-time operation strategies are required to allow the BESS coordinated control, as well as a cost-effective and stable operation. This paper presents new tools developed for the planning and real-time operation of distribution networks integrating BESS, particularly when operating islanding. For real-time operation, a short-term emergency operation-planning tool assesses the feasibility of islanded operation of a small section of the distribution network. The long-term impact of a BESS control strategy for islanded operation is assessed through a Life Cycle Analysis (LCA) tool. The results and implementation experience in real distribution network are also discussed.

2020

Fault-ride-through strategies for grid-tied and grid-forming smart-transformers suited for islanding and interconnected operation

Autores
Rodrigues, J; Moreira, C; Lopes, JP;

Publicação
ELECTRIC POWER SYSTEMS RESEARCH

Abstract
This paper presents two innovative Fault-Ride-Through (FRT) strategies suited for Smart-Transformers (ST) supplying hybrid AC/DC distribution grids within a microgrid environment. The first strategy is suited for ST without a local energy storage, where its Medium Voltage (MV) inverter is operated in grid-tied mode. The proposed approach relies on the voltage sensitivity of resources connected to the ST fed distribution networks aiming to limit the MV inverter current. The second strategy is suited for ST incorporating local energy storage and operating its MV inverter in grid-forming mode, thus enabling islanding operation of a MV grid section. The proposed FRT strategy aims to regulate ST's output voltage by calculating the maximum voltage drop in the coupling filter in order to control the output current. The proposed strategies are evaluated exploiting appropriated simulation models and extensive operating conditions.