Enviaments recents

  • Unified reference controller for flexible primary control and inertia sharing in multi-terminal voltage source converter-HVDC grids 

    Rouzbehi, Kumars; Zhang, Weiyi; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2016-10-11)
    Article
    Accés obert
    Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac ...
  • Multiterminal DC grids: operating analogies to AC power systems 

    Rouzbehi, Kumars; Candela García, José Ignacio; Gharehpetian, Gevorg B.; Harnefors, Lennart; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2016-12-06)
    Article
    Accés restringit per política de l'editorial
    Nowadays, some Multi-terminal DC (MTDC) systems are in operation around the world. Soon, MTDC grids will be built and overlay the present AC grids. The main driver for the construction of such a grid is to facilitate ...
  • Centralized protection strategy for medium voltage DC microgrids 

    Monadi, Mehdi; Gavriluta, Catalin; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016-08-15)
    Article
    Accés obert
    This paper presents a centralized protection strategy for medium voltage dc (MVDC) microgrids. The proposed strategy consists of a communication-assisted fault detection method with a centralized protection coordinator and ...
  • A communication-assisted protection scheme for direct-current distribution networks 

    Monadi, Mehdi; Zamani, M. Amin; Koch-Ciobotaru, Cosmin; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016-05-27)
    Article
    Accés restringit per política de l'editorial
    One of the major issues associated with the implementation of direct-current distribution systems is the design of a proper protection scheme. The fault current characteristics in direct-current distribution systems are ...
  • Impedance-compensated grid synchronisation for extending the stability range of weak grids with voltage source converters 

    Suul, Jon Are; D'Arco, Salvatore; Rodríguez Cortés, Pedro; Molinas Cabrera, Marta (2016-05-12)
    Article
    Accés obert
    This paper demonstrates how the range of stable power transfer in weak grids with voltage source converters (VSCs) can be extended by modifying the grid synchronisation mechanism of a conventional synchronous reference ...
  • Sizing study of second life li-ion batteries for enhancing renewable energy grid integration 

    Saez-de Ibarra, Andoni; Martinez-Laserna, Egoitz; Stroe, Daniel-loan; Swierczynski, Maciej; Rodríguez Cortés, Pedro (2016-07-19)
    Article
    Accés obert
    Renewable power plants must comply with certain codes and requirements to be connected to the grid, being the ramp-rate compliance one of the most challenging requirements, especially for photovoltaic or wind energy ...
  • Multi-terminal HVDC grids with inertia mimicry capability 

    Zhang, Weiyi; Rouzbehi, Kumars; Luna Alloza, Álvaro; Gharehpetian, Gevorg B.; Rodríguez Cortés, Pedro (2016-06-23)
    Article
    Accés obert
    The high-voltage multi-terminal dc (MTDC) systems are foreseen to experience an important development in the next years. Currently, they have appeared to be a prevailing technical and economical solution for harvesting ...
  • Flexible control of power flow in multiterminal DC grids using DC-DC converter 

    Rouzbehi, Kumars; Candela García, José Ignacio; Luna Alloza, Álvaro; Gharehpetian, Gevorg B.; López Rodríguez, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2016-09-01)
    Article
    Accés obert
    This paper proposes an efficient control framework that utilizes dc-dc converters to achieve flexible power flow control in multiterminal dc (MTDC) grids. The dc-dc converter employed in this paper is connected in cascade ...
  • Synchronous power controller with flexible droop characteristics for renewable power generation systems 

    Zhang, Weiyi; Mir Cantarellas, Antonio; Rocabert Delgado, Joan; Luna Alloza, Álvaro; Rodriguez, Pedro (2016-10-01)
    Article
    Accés obert
    The increasing amount of renewable power generation systems is a challenging issue for the control and operation of the electrical networks. One of the main issues is their lack of inertia, which is becoming a greater ...
  • Multi-terminal MVDC grids fault location and isolation 

    Monadi, Mehdi; Koch-Ciobotaru, Cosmin; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016-06-28)
    Article
    Accés obert
    Voltage source converters (VSCs) are highly vulnerable to DC fault current; thus, protection is one of the most important concerns associated with the implementation of multi-terminal VSC-based DC networks. This paper ...

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