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About

About

Justino Miguel Rodrigues was born in Penafiel (Portugal) on 9th September 1985. He graduated in Electrical Engineering in the Faculty of Engineering of the University of Porto - FEUP (2010) and obtained his M.Sc. in Renewable Energy Systems in July 2011.

He has joined INESC TEC in 2010 as member of the REIVE Project (Smart Grids with Electric Vehicles), where he was responsible for the development of computational simulation models for prototypes of power electronic converters integrating advanced control functionalities developed in the scope of the project.

He has integrated in COMUTE-DC project in 2013, participating in the development of a laboratorial setup of a small-scale multi-terminal DC grid. Was also responsible for executing the laboratorial validation of the advanced functionalities developed for multi-terminal DC grid developed in the scope of the project.

He is currently integrating the SENSIBLE project since 2016, being responsible for the development of computational simulation models to validate the integration of energy storage systems in low-voltage grids regarding fault-ride-through and islanded operation capabilities. He is also involved in the development of optimization algorithms for the optimal management of energy storage systems integrated in the medium-voltage and low-voltage grids which will integrate the final demonstrator site.

He is also responsible for the development of Lab Device Manager software, designed to make the implementation, management and monitoring of laboratorial experiments easier and more accessible, making use of the equipment and infrastructure available in REIVE laboratory.

An additional and solid knowledge in automation and programming was obtained from the developed work, constituting a valuable complement to the accumulated knowledge in power systems and renewable energy systems.

Interest
Topics
Details

Details

  • Name

    Justino Miguel Rodrigues
  • Cluster

    Power and Energy
  • Role

    Researcher
  • Since

    13th December 2010
003
Publications

2019

Smart transformers - Enabling power-frequency regulation services for hybrid AC/DC networks

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

Publication
2019 IEEE Milan PowerTech, PowerTech 2019

Abstract
The progressive decommissioning of large synchronous generators that should take place in face of increasing penetration ratios of Distributed Generation (DG) will demand additional control mechanisms for inertia provision and frequency and voltage regulation in the power system. The need to cope with increasing penetration ratios of DG in distribution grids, added to the necessity to integrate an expected massification of EV and distributed ESS, and to the necessity to enhance Power System resilience and controllability, makes the Smart-Transformer (ST) a suitable solution. In this paper it is demonstrated the feasibility of the ST to contribute to frequency control through the control of the resources available in the distribution AC/DC hybrid networks created from the ST. The feasibility of local droop controllers, acting on frequency and voltage magnitude of the AC/DC hybrid networks created from the ST, to achieve the aforementioned goal, is demonstrated through computational simulation. © 2019 IEEE.

2018

A practical comparison of two algorithms for inverter control with virtual inertia emulation

Authors
Barbosa, D; Ramos, J; Rodrigues, J; Lopes, A; Araujo, RE;

Publication
20th Power Systems Computation Conference, PSCC 2018

Abstract
Renewable energy sources are environmentally appealing in electrical power grids. However, distributed energy resources (DER) are typically connected to the grid through converters that do not have the same properties as synchronous generators which have high participation in power generation. Some of these properties like inertial response are important and must not be lost with higher DER penetration. The present paper analyses two converter control algorithms that are capable of emulating inertial response in DER: the Virtual Synchronous Generator control (VSG) and the Synchronverter. Both algorithms are described, implemented and tested in a practical experiment and a comparison of both algorithms is assessed in terms of frequency nadir achieved, settling time and implementation complexity. The findings can give useful insights to help decide which algorithm should be implemented in a future real application. © 2018 Power Systems Computation Conference.

2018

The role of low-voltage-ride-through capability of distributed energy resources for the mitigation of voltage sags in low voltage distribution grids

Authors
Rodrigues, J; Lopes, A; Miranda, L; Gouveia, C; Moreira, C; Pecas Lopes, JP;

Publication
20th Power Systems Computation Conference, PSCC 2018

Abstract
The large scale integration of Distributed Energy Resources (DER) at the Low Voltage (LV) distribution network offers new opportunities for the improvement of power quality and network reliability. Currently, the occurrence of large disturbances at the transmission network causing severe voltage sags at the distribution level could lead to the disconnection of a large share of DER units connected to the LV network, causing a more severe disturbance. In this paper, Low-Voltage-Ride-Through (LVRT) requirements and current support strategies are proposed to mitigate the impact of severe voltage sag at the distribution level for DER units connected to LV network. The impact of adopting the proposed LVRT strategies will be analyzed through simulation and experimentally. A developed in house ESS prototype incorporating the developed LVRT strategies is also presented, and its capacity to comply with the proposed LVRT requirements is demonstrated using an experimental Power-Hardware-in-the-Loop (PHIL) setup. © 2018 Power Systems Computation Conference.

2018

Testing of smart converters for grid-code compliance with power-hardware-in-the-loop

Authors
Ramos, JC; Aguiar, J; Rodrigues, J; Silva, B;

Publication
2018 INTERNATIONAL CONFERENCE ON SMART ENERGY SYSTEMS AND TECHNOLOGIES (SEST)

Abstract
Using power-hardware-in-the-loop is a solution for testing the behavior of devices on an emulated grid, with greater flexibility and avoiding the introduction of disturbances or critical operating conditions in the utility grid. This paper highlights the implementation of such a setup, its challenges and the solutions to cope with its limitations. The emulated grid is then used for the experimental validation of a 10kVA converter, regarding fault-ride-through, dynamic reactive current support and frequency and voltage based droop control, leading to the identification of design improvement recommendations.

2017

MicroGrid Energy Balance Management for Emergency Operation

Authors
Gouveia, J; Gouveia, C; Rodrigues, J; Bessa, R; Madureira, AG; Pinto, R; Moreira, CL; Lopes, JAP;

Publication
2017 IEEE MANCHESTER POWERTECH

Abstract
A distinctive characteristic of a Microgrid (MG) system is related to the ability of operating autonomously. However, the stability of the system relies in storage and generation availability, providing frequency and voltage regulation. Considering the deployment of distributed storage units in the Low Voltage network and of smart metering infrastructures, this paper presents an online tool for promoting an effective coordination of MG flexible resources in order ensure a secure autonomous operation and maximize the time that the MG is able to operate islanded from the main grid. The tool determines a priori an emergency operation plan for the next hours, based on load and microgeneration forecasting. The limited energy capacity of the distributed storage units participating in MG control is also considered.