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About

Nuno Fulgêncio has finished his Integrated Master in Electrical and Computers Engineering in 2013, at the Faculty of Engineering of the University of Porto, opting to focus his studies in the field of Energy. In the beginning of 2014 he has joined the INESC TEC team (Center of Power and Energy Systems) as a researcher. Since this time, he has developed work in the area of power systems’ stability studies, mainly through the development and implementation of dynamic models. As of 2015, he joined the Doctoral Program in Electrical and Computers Engineering, in the same faculty.

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Details

Details

  • Name

    Nuno Rafael Fulgêncio
  • Cluster

    Power and Energy
  • Role

    Research Assistant
  • Since

    17th March 2014
002
Publications

2019

Equivalent dynamic model of active distribution networks for large voltage disturbances

Authors
Fulgêncio, N; Moreira, C; Carvalho, L; Lopes, JP;

Publication
2019 IEEE Milan PowerTech, PowerTech 2019

Abstract
This paper proposes a 'grey-box' dynamic equivalent model for medium voltage active distribution networks, taking into account a heterogeneous fleet of generation technologies alongside the latest European grid codes requirements. It aims to properly represent the transient behavior of the system upon large voltage disturbances in the transmission side. The proposed equivalent model is composed by four main components: two equivalent generation units, one for converter-connected units' representation, and another accounting for the synchronous generation units' portfolio; an equivalent composite load model; and a battery energy storage system, also converter-connected to the grid. The model's parameters are estimated by an evolutionary particle swarm optimization algorithm, by comparing a fully-detailed model of a medium voltage distribution network with the equivalent model's frequency domain's responses of active and reactive power flows, at the boundary of distribution-transmission interface substation. © 2019 IEEE.

2019

Experimental validation of an equivalent dynamic model for active distribution networks

Authors
Fulgencio, N; Rodrigues, J; Moreira, C;

Publication
SEST 2019 - 2nd International Conference on Smart Energy Systems and Technologies

Abstract
In this paper a real-time laboratorial experiment is presented, intended to validate a 'grey-box' equivalent model for medium voltage active distribution networks with high presence of converter-connected generation, considering the latest European grid codes requirements, in response to severe faults at the transmission network side. A hybrid setup was implemented at INESC TEC's laboratory (Porto, Portugal), relying on a real-time digital simulator to provide the interface between simulation and physical assets available at the laboratory, in a power-hardware-in-the-loop configuration. The study considered the laboratory's internal network to be operating (virtually) as a medium voltage distribution network with converter-connected generation (fault ride through compliant), connected to a fully-detailed transmission network model. The aggregated reactive power response of the laboratory's network was fitted by the dynamic equivalent model, recurring to an evolutionary particle swarm optimization algorithm. The methodology adopted, testing conditions and respective results are presented. © 2019 IEEE.

2017

Identification of Dynamic Simulation Models for Variable Speed Pumped Storage Power Plants

Authors
Moreira, C; Fulgencio, N; Silva, B; Nicolet, C; Beguin, A;

Publication
Journal of Physics: Conference Series

Abstract
This paper addresses the identification of reduced order models for variable speed pump-turbine plants, including the representation of the dynamic behaviour of the main components: hydraulic system, turbine governors, electromechanical equipment and power converters. A methodology for the identification of appropriated reduced order models both for turbine and pump operating modes is presented and discussed. The methodological approach consists of three main steps: 1) detailed pumped-storage power plant modelling in SIMSEN; 2) reduced order models identification and 3) specification of test conditions for performance evaluation. © Published under licence by IOP Publishing Ltd.

2017

Integration of Variable Speed Pumped Hydro Storage in Automatic Generation Control Systems

Authors
Fulgencio, N; Moreira, C; Silva, B;

Publication
Journal of Physics: Conference Series

Abstract
Pumped storage power (PSP) plants are expected to be an important player in modern electrical power systems when dealing with increasing shares of new renewable energies (NRE) such as solar or wind power. The massive penetration of NRE and consequent replacement of conventional synchronous units will significantly affect the controllability of the system. In order to evaluate the capability of variable speed PSP plants participation in the frequency restoration reserve (FRR) provision, taking into account the expected performance in terms of improved ramp response capability, a comparison with conventional hydro units is presented. In order to address this issue, a three area test network was considered, as well as the corresponding automatic generation control (AGC) systems, being responsible for re-dispatching the generation units to re-establish power interchange between areas as well as the system nominal frequency. The main issue under analysis in this paper is related to the benefits of the fast response of variable speed PSP with respect to its capability of providing fast power balancing in a control area. © Published under licence by IOP Publishing Ltd.

2017

Role of pump hydro in electric power systems

Authors
Bessa, R; Moreira, C; Silva, B; Filipe, J; Fulgencio, N;

Publication
Journal of Physics: Conference Series

Abstract
This paper provides an overview of the expected role that variable speed hydro power plants can have in future electric power systems characterized by a massive integration of highly variable sources. Therefore, it is discussed the development of a methodology for optimising the operation of hydropower plants under increasing contribution from new renewable energy sources, addressing the participation of a hydropower plant with variable speed pumping in reserve markets. Complementarily, it is also discussed the active role variable speed generators can have in the provision of advanced frequency regulation services. © Published under licence by IOP Publishing Ltd.