Now showing items 1-20 of 24

    • A distributed power sharing framework among households in microgrids: a repeated game approach 

      Alskaif, Tarek; Guerrero Zapata, Manel; Bellalta Jiménez, Boris; Nilsson, Anders (2017-01-01)
      Article
      Open Access
      In microgrids, the integration of distributed energy resources (DERs) in the residential sector can improve power reliability, and potentially reduce power demands and carbon emissions. Improving the utilization of renewable ...
    • Analysis of consensus-based islanded microgrids subject to unexpected electrical and communication partitions 

      Rosero Chandi, Carlos Xavier; Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-01)
      Article
      Open Access
      Microgrids are power systems consisting of an electrical network composed by distributed loads and generation units that may include a communication network for improved operation. The considered microgrid in islanded mode ...
    • Analysis of the effect of clock drifts on frequency regulation and power sharing in inverter-based islanded microgrids 

      Martí Colom, Pau; Torres Martínez, Javier; Rosero, Carlos Xavier; Velasco García, Manel; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2018-02-12)
      Article
      Open Access
      Local hardware clocks in physically distributed computation devices hardly ever agree because clocks drift apart and the drift can be different for each device. This paper analyses the effect that local clock drifts have ...
    • 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
      Open Access
      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 ...
    • Communication-aware consensus for frequency restoration in islanded microgrids 

      Martí Colom, Pau; Velasco García, Manel; Martín Rull, Enric Xavier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      MicroGrids (MGs) include spatially distributed generation (DG) systems and loads that may require operating autonomously in islanded mode. The operation of islanded MGs can benefit from consensus theory and practice, ...
    • Consensus for active power sharing and frequency restoration in islanded microgrids subject to drifting clocks 

      Rosero Chandi, Carlos Xavier; Martí Colom, Pau; Velasco García, Manel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      The application of consensus theory in the control of islanded microgrids (MG) is gaining increased attention because it facilitates the development of distributed control solutions. In particular, its application to active ...
    • Corrección de los efectos de las derivas de reloj en microrredes de alterna con inversores de potencia trifásicos 

      Alfaro Aragón, Carlos Arturo (Universitat Politècnica de Catalunya, 2018-02)
      Master thesis
      Open Access
      En las microrredes que trabajan con inversores sus controles son operados generalmente por microcontroladores locales, los cuales tienen sus propios relojes que difieren entre cada uno en la medición del tiempo. Los ...
    • Day-ahead trading of aggregated energy flexibility 

      Valsomatzis, Emmanouil; Bach Pedersen, Torben; Abelló Gamazo, Alberto (Association for Computing Machinery (ACM), 2018)
      Conference report
      Open Access
      Flexibility of small loads, in particular from Electric Vehicles (EVs), has recently attracted a lot of interest due to their possibility of participating in the energy market and the new commercial potentials. Different ...
    • Demand aggregator flexibility forecast: price incentives sensitivity assessment 

      Kotsis, Grigorios; Moschos, Ioannis; Corchero García, Cristina; Cruz Zambrano, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Restricted access - publisher's policy
      This work seeks to determine the potentials of a Demand Aggregator into the Demand Response scheme. The authors describe and validate the optimization technique used by the Aggregator to enable demand flexibility in domestic ...
    • Design a suitable event detection strategy for secondary switched control with no communication for islanded microgrids 

      Forero Quintero, Jose Fernando (Universitat Politècnica de Catalunya, 2018-09-17)
      Master thesis
      Open Access
      Actualmente, las microrredes eléctricas han emergido como una eficiente solución para la integración de las energías renovables en las redes tradicionales. Diversos estudios han profundizado en el modelado , control y ...
    • Droop-free hierarchical control strategy for inverter-based AC microgrids 

      Rey, Juan M.; Vergara Barrios, Pedro P.; Castilla Fernández, Miguel; Camacho Santiago, Antonio; Velasco García, Manel; Martí Colom, Pau (2020-05-20)
      Article
      Open Access
      Hierarchical schemes are widely used for the design of inverter-based AC microgrids control strategies. To ensure a reliable operation, hierarchical control must consider together all the functionalities that allow the ...
    • Experimental study of clock drift impact over droop-free distributed control for industrial microgrids 

      Torres Martínez, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Ghahderijani, Mohammad Moradi; Rey López, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      It is well-know that in systems composed of several digital processors, clock signals of individual units differ from each other due to clock drifts. This paper investigates the effect of clock drifts from voltage source ...
    • Impact of clock drifts on communication-free secondary control schemes for inverter-based islanded microgrids 

      Castilla Fernández, Miguel; Camacho Santiago, Antonio; Martí Colom, Pau; Velasco García, Manel; Moradi Ghahderijani, Mohammad (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-13)
      Article
      Restricted access - publisher's policy
      IEEE In inverter-based microgrids, individual inverters operate usually with its own digital processor. The clocks used to generate the time signals of these processors differ from each other due to clock drifts. This paper ...
    • Load shedding scheme with under-frequency and undervoltage corrective actions to supply high priority loads in islanded microgrids 

      Nascimento, Bruno de Nadai; Zambroni de Souza, Antonio Carlos; de Carvalho Costa, Joao Guilherme; Castilla Fernández, Miguel (2019-08-19)
      Article
      Open Access
      In the last few years, microgrids have become a potential solution to improve reliability and security in the supply of electricity to power systems. When a microgrid changes its operation mode from grid-connected to ...
    • Microgrid architecture evaluation for small and medium size industries 

      Bandeiras, Filipe; Gomes, Mario; Coelho, Paulo; Fernandes, Jose; Camacho Santiago, Antonio; Castilla Fernández, Miguel (De Gruyter, 2018-02-05)
      Article
      Open Access
    • Microgrid clustering architectures 

      Bullich Massagué, Eduard; Díaz González, Francisco; Aragüés Peñalba, Mònica; Girbau Llistuella, Francesc; Olivella Rosell, Pol; Sumper, Andreas (2018-02-15)
      Article
      Restricted access - publisher's policy
      Microgrids are considered one of the most promising solutions to integrate renewable distributed generation into the electric power system. During the last decade, the microgrid concept has been studied and developed and ...
    • Mixed-integer-linear-programming-based energy management system for hybrid PV-wind-battery microgrids: Modeling, design, and experimental verification 

      Luna, Adriana C.; Díaz, Nelson L.; Graells Sobré, Moisès; Vasquez, Juan C.; Guerrero, Josep M. (2017-04-01)
      Article
      Open Access
      Microgrids are energy systems that aggregate distributed energy resources, loads, and power electronics devices in a stable and balanced way. They rely on energy management systems to schedule optimally the distributed ...
    • Modelling and simulation of a renewable energy-based microgrid 

      Jabbour Hernández, Maria (Universitat Politècnica de Catalunya, 2018-09-10)
      Bachelor thesis
      Open Access
      Power management analysis of a renewable energy-based electrical microgrid, from generation to storage systems. Model construction and simulation.
    • Multi-layer active power and frequency control strategy for industrial microgrids 

      Rey, Juan Manuel; Solano, Javier; Torres Martínez, Javier; Miret Tomàs, Jaume; Ghahderijani, Mohammad Moradi; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      Industrial microgrids require control strategies that guarantee high reliability and power quality. In this paper a multi-layer active power and frequency control strategy for industrial microgrids is presented. It is ...
    • Optimization problem for meeting distribution system operator requests in local flexibility markets with distributed energy resources 

      Olivella Rosell, Pol; Bullich Massagué, Eduard; Aragüés Peñalba, Mònica; Sumper, Andreas; Ottesen, Stig Odegaard; Vidal Clos, Josep Andreu; Villafafila Robles, Roberto (2018-01-15)
      Article
      Restricted access - publisher's policy
      The increasing penetration of distributed energy resources in the distribution grid is producing an ever-heightening interest in the use of the flexibility on offer by said distributed resources as an enhancement for the ...