Now showing items 1-20 of 66

    • A Corrective Load Shedding Scheme to Mitigate Voltage Collapse 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis (01/01/2006)
      Voltage stability is concerned with the ability of a power system to maintain acceptable voltages at all buses. A measure of the power system voltage stability is the distance to the saddle node bifurcation of the power ...
    • A power flow solvability identification and calculation algorithm 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis (01/01/2006)
      This paper presents a continuation and optimization based algorithm to detect power flow unsolvability. In addition, the algorithm obtains the power flow solution, if it exists, no matter how ill-conditioned the power ...
    • A practical approach to solve power system constraints with application to the Spanish electricity market 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Gómez San Román, Tomás; Echavarren Cerezo, Francisco; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López Camino, Gerardo (01/11/2004)
      The solution of power system constraints is an important issue that has to be addressed to achieve a fair operation of a competitive electricity market. In the Spanish electricity market, the System Operator (SO) is in ...
    • A tool for optimal operation and design of batteries and its applications to self-consumption 

      Fernández de Bobadilla, Jose María; Lobato Miguélez, Enrique; Sigrist, Lukas; González García, Alezeia
      This paper presents a tool for optimal operation and design of batteries and its applications to self-consumption. The recent improvements in capabilities and costs of battery storage technologies might enable new business ...
    • An overview of ancillary services in Spain 

      Lobato Miguélez, Enrique; Egido Cortés, Ignacio; Rouco Rodríguez, Luis; López Camino, Gerardo (01/03/2008)
      Under a deregulated environment, ancillary services (AS) are defined as the set of products separated from the energy production, which are related to security and reliability of a power system. Ancillary services can be ...
    • An ultra-capacitor for frequency stability enhancement in small-isolated power systems: models, simulation and field tests 

      Egido Cortés, Ignacio; Sigrist, Lukas; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Barrado Sánchez, Alberto Carlos (01/01/2015)
      The most relevant issue in operation of isolated power systems is frequency stability. Frequency stability is concerned with the ability of generators to supply the loads at an acceptable frequency after a disturbance. ...
    • Application of neural networks to the management of voltage constraints in the Spanish market 

      Ugedo Álvarez-Ossorio, Alejandro; Lobato Miguélez, Enrique (01/09/2011)
      The security criteria of a power system require that branch power flows and bus voltages are within their limits, not only in normal operating conditions but also when any credible contingency occurs. In the Spanish ...
    • ARO: Una herramienta para el análisis de restricciones de operación en el mercado español de energía eléctrica 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López Camino, Gerardo (01/05/2001)
      El tratamiento de restricciones técnicas impuestas por la red de transporte en mercados de energía eléctrica, cuya casación de ofertas de generación y demanda se realiza ignorando la red, es una tarea importante. Este es ...
    • Barriers to the implementation of response options aimed at mitigating the impact of wind power on electricity systems 

      Olmos Camacho, Luis; Cossent Arín, Rafael; Lobato Miguélez, Enrique; Gómez San Román, Tomás (01/09/2011)
      Increasing shares of renewable energy in transmission and distribution grids are significantly changing the way electricity systems must function. While these technologies offer great opportunities to fight climate change ...
    • El colapso de tensión: Causas y soluciones (I/II) 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Rodríguez García, Juan Manuel (01/01/2006)
      El colapso de tensiones constituye uno de los fenómenos más estudiados en los sistemas de energía eléctrica durante los últimos años. El colapso de tensiones está íntimamente relacionado con el estudio de la estabilidad ...
    • El colapso de tensión: Causas y soluciones (II/II) 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Rodríguez García, Juan Manuel (01/03/2006)
      El colapso de tensiones constituye uno de los fenómenos más estudiados en los sistemas de energía eléctrica durante los últimos años. El colapso de tensiones está íntimamente relacionado con el estudio de la estabilidad ...
    • Contingency Analysis: A Feasibility Identification and Calculation Algorithm 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis (05/09/2005)
      This paper presents a continuation and optimization based algorithm to detect power flow unfeasibility under the occurrence of contingency hypothesis. In addition, the algorithm obtains the power flow solution under ...
    • Control de los sistemas de energía eléctrica 

      Echavarren Cerezo, Francisco; Egido Cortés, Ignacio; Lobato Miguélez, Enrique; Sigrist, Lukas (24/08/2015)
    • Control de los sistemas de energía eléctrica 

      Chapado Tebar, Jesús; Díaz García, Agustín; Egido Cortés, Ignacio; Herrero Fuerte, Javier; Lobato Miguélez, Enrique; Pilo de la Fuente, Eduardo (20/10/2016)
    • Control de los sistemas de energía eléctrica 

      Agustín; Alezeia; Eduardo; Enrique; Ignacio; Javier; Jesús; María Inmaculada (21/09/2018)
    • Control de los sistemas de energía eléctrica 

      Blázquez García, María Inmaculada; Chapado Tebar, Jesús; Díaz García, Agustín; Egido Cortés, Ignacio; González García, Alezeia; Herrero Fuerte, Javier; Lobato Miguélez, Enrique; Pilo de la Fuente, Eduardo (05/09/2017)
    • Decision trees applied to forecasting switched shunt devices within the Spanish power system 

      Lobato Miguélez, Enrique; Echavarren Cerezo, Francisco; Rouco Rodríguez, Luis; Ugedo Álvarez-Ossorio, Alejandro (01/06/2007)
      Static security assessment within a power system requires:(a) building a scenario of the power system network that represents the state of the network for a particular time spot and (b) running a number of static security ...
    • Decision trees applied to the management of voltage constraints in the Spanish market 

      Ugedo Álvarez-Ossorio, Alejandro; Lobato Miguélez, Enrique; Peco González, Jesús Pascual; Rouco Rodríguez, Luis (01/05/2005)
      The security criteria of a power system require that branch power flows and bus voltages are within their limits, not only in normal operating conditions but also when any credible contingency occurs. In the Spanish ...
    • Economic assessment of smart grid initiatives for island power systems 

      Sigrist, Lukas; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Gazzino, Marco; Cantù, Matteo (01/03/2017)
      Islands are facing considerable challenges in meeting their energy needs in a sustainable, affordable and reliable way. The present paper develops an integrated approach to economically assess initiatives that can transform ...