Enviaments recents

  • Dynamic converter control role configuration in grid of grids 

    Arévalo Soler, Josep; Nahalparvari, Mehrdad; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol; Norrga, Staffan (2023)
    Text en actes de congrés
    Accés obert
    The control role of power converters conforming an HVDC link is generally static, i.e. changing the control role of the power converters is not considered in the power system operation. In this paper a lab-scaled demonstration ...
  • Multi-agent system-based microgrid protection using angular variation: An embedded approach 

    Dizioli, F. A. S.; Aquino Barra, Pedro Henrique; Menezes, Thiago Souza; Albernaz Lacerda Freitas, Vinícius; Coury, Denis V.; Souza Fernandes, Ricardo Augusto (Elsevier, 2023-07)
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    Accés restringit per política de l'editorial
    This paper presents a new approach for protecting microgrids based on multi-agent systems and using the angular variation of currents. The multi-agent system was structured using a congregation organization with three ...
  • Limitations on the virtual inertia provision from grid-forming-connected renewable energy sources 

    Girona Badia, Jaume; Albernaz Lacerda Freitas, Vinícius; Prieto-Araujo, E.; Gomis Bellmunt, Oriol (2023)
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    This paper addresses the limitations of virtual inertia provision from grid-forming interconnected renewable energy sources considering AC grid and resources dynamics. The instantaneous power that the grid-forming can ...
  • Analysis of the contribution of a battery bank to voltage regulation in a distribution system 

    Barbalho, Pedro Inácio de Nascimento e; Albernaz Lacerda Freitas, Vinícius; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    Due to demand of higher power quality, reliability and efficiency levels, the penetration of distributed energy resources increased through the past years. Thus, several studies on the different types of electrical energy ...
  • Analysis of harmonic distortion influence in a distributed synchronous generator 

    Casimiro, Renan; Albernaz Lacerda Freitas, Vinícius; Pavanello Bataglioli, Rodrigo; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    In conventional electrical systems, the generators are located far from the load centers. However, considering the distributed generation, the impact of harmonic distortion in the generators cannot be neglected.Thus, this ...
  • Phasor and EMT models of grid-following and grid-forming converters for short-circuit simulations 

    Albernaz Lacerda Freitas, Vinícius; Prieto Araujo, Eduardo; Cheah Mañé, Marc; Gomis Bellmunt, Oriol (2023)
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    Phasor models have been widely used in short-circuit simulations, in which system operators verify the behaviour of the grid over thousands of different contingencies. However, it is still unclear if phasor models can still ...
  • Modular impedance modeling and stability analysis of hybrid AC/DC power systems with grid-forming and grid-following converters 

    Liu, Ni; Wang, Hong; Sun, Li; Zhou, Weihua; Song, Jie; Zhou, Dangsheng; Wang, Wuhua; Chen, Zhe (Institute of Electrical and Electronics Engineers (IEEE), 2023-01-01)
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    Accés obert
    The renewable energy resources integrating HVDC transmission systems, consisting of grid-following and grid-forming converters, have complex physical and control dynamic interactions. Although the impedance analysis method ...
  • Novel control approach for a hybrid grid-forming HVDC offshore transmission system 

    Tian, Shangen; Campos Gaona, David; Albernaz Lacerda Freitas, Vinícius; Torres Olguin, Raymundo Enrique; Anaya Lara, Olimpo (2020-04-03)
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    Accés obert
    This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, ...
  • Selective nonunit protection technique for multiterminal VSC-HVDC grids 

    Bertho, Rui; Albernaz Lacerda Freitas, Vinícius; Machado Monaro, Renato; Melo Vieira, José Carlos; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2018-10)
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    Accés obert
    The development of multiterminal voltage-source converters high-voltage direct current (VSC-HVDC) grids poses a new challenge: A fast and selective protection algorithm for such grids must be implemented. Therefore, this ...
  • Short-circuit analytical model for modular multilevel converters considering DC cable capacitance 

    Albernaz Lacerda Freitas, Vinícius; Peña Alzola, Rafael; Campos Gaona, David; Machado Monaro, Renato; Anaya Lara, Olimpo; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2020)
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    Accés obert
    Developing analytical short-circuit models for Modular Multilevel Converters (MMC) is not straightforward due to their switching and blocking characteristics. Short-circuit models for MMCs have been developed previously ...
  • Distance protection algorithm for multiterminal HVDC systems using the Hilbert–Huang transform 

    Albernaz Lacerda Freitas, Vinícius; Machado Monaro, Renato; Campos Gaona, David; Coury, Denis V.; Anaya Lara, Olimpo (2020-08)
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    Accés obert
    Multiterminal high-voltage direct current (HVDC) systems still need advances in terms of protection in order to improve their reliability. In this context, the distance protection can play a major role by adding selectivity ...
  • Control y análisis de la dinámica cero en inversores trifásicos de fuente de corriente mediante un modelo de variables de estado complejas 

    Rahimi, Leila; Dòria Cerezo, Arnau; Griñó Cubero, Robert (2023)
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    Este trabajo analiza la dinámica cero de inversores de fuente de corriente trifásicos alimentados desde una fuente de tensión y conectados a una carga resistiva local o a la red eléctrica. El análisis de la dinámica cero ...

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