Browsing by Author "f32b0e49-5440-4020-8ad4-c9da8b783d4f"

Now showing items 1-20 of 126

    • A comparison of eigenvalues obtained with two dynamic simulation software packages 

      Persson, Jonas G.; Slootweg, Johannes G Han; Rouco Rodríguez, Luis; Söder, Lennart; Kling, Wil L Wil (Sin editorial (Bolonia, Italia), 2003-06-23)
      Eigenvalues of a power system give a good picture of the stability in the current operating point. In this paper the linear analysis capabilities of two software packages are evaluated and compared. It is shown in which ...

    • A fundamental study on the impact of HVDC lines on transient stability of power systems 

      Sigrist, Lukas; Echavarren Cerezo, Francisco; Rouco Rodríguez, Luis; Panciatici, Patrick (Eindhoven University of Technology (Eindhoven, España), 29/06/2015)
      An increasing number of HVDC lines are currently deployed all around the world. HVDC links are either based on line-commutated converters (LCC) or on voltage-source converters (VSC) technologies. This paper presents a ...

    • A least-squares approach to estimate Lagrange multipliers in a combined method to voltages collapse detection 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López, G.; Cacho, F.; Pézic, M. (Sin editorial (Vilamoura, Portugal), 2003-07-03)
      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 load shedding algorithm for improvement of load margin to voltage collapse 

      Echavarren Cerezo, Francisco; Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López, G. (Sin editorial (Bolonia, Italia), 23/06/2003)
      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 mixed-integer LP-based network topology optimization algorithm for overload alleviation 

      Lobato Miguélez, Enrique; Echavarren Cerezo, Francisco; Rouco Rodríguez, Luis; Navarrete Fernández, María Luisa; Casanova Lafarga, Rosa; López Camino, Gerardo (Sin editorial (Bolonia, Italia), 2003-06-23)
      Line switching is used in power system operation to alleviate branch overloads. This paper presents a mixed-integer linear programming algorithm that determines the optimal switching strategies to remove or reduce overloads ...

    • A power generation redispatch algorithm for competitive electricity markets. 

      Barrado Sánchez, Alberto Carlos; Lobato Miguélez, Enrique; Peco González, Jesús Pascual; Rouco Rodríguez, Luis (Sin editorial (Leicester, Reino Unido), 1999-09-14)
      The technical feasibility of a power generation dispatch in competitive electricity markets consists of not having any overloaded equipment not only in case of normal operating condition but also when any contingency ...

    • A simplified approach to detect undervoltage tripping of wind generators 

      Sigrist, Lukas; Rouco Rodríguez, Luis (Eindhoven University of Technology (Eindhoven, España), 29/06/2015)
      This paper proposes a simplified but fast approach based on a Norton equivalent of wind generators to detect undervoltage tripping of wind generators. This approach is successfully applied to a real wind farm. Today, most ...

    • A Simulation Tool for the Design of the Electrical Supply System of High-Speed Railway Lines 

      Pilo De La Fuente, Eduardo; Rouco Rodríguez, Luis; Fernández Cardador, Antonio; Hernández-Velilla, Agustín (Sin editorial (Seattle, Estados Unidos de América), 2000-07-16)
      The design of the electrical supply system of high-speed railway lines involves the selection of the single phase system (one or two active conductors: 1x25kV or 2x25 kV), the design of the catenary, and the location and ...

    • A tool for computation of electrical losses in wind farms grids 

      Rouco Rodríguez, Luis; Campos Norte, Ignacio; Hernández Alarcón, Marta; Pérez Campion, Juan Carlos; Gómez de Olea, Ignacio (European Association for the Development of Renewable Energies, Environment and Power Quality; Unive (Málaga, España), 04/04/2017)
      Accurate calculation of electrical losses of wind farm grids is needed in the economic evaluation of wind generation projects. This paper describes a tool for computation of electrical losses in wind farm grids. It makes ...

    • A tool for reconfigurarion of large-scale distribution networks 

      González García, Alezeia; Echavarren Cerezo, Francisco; Rouco Rodríguez, Luis; Gómez San Román, Tomás; Cabetas, J. (Sin editorial (Glasgow, Reino Unido), 2008-07-14)
      Security of supply in case of failure of high voltagemedium voltage (HVMV) substations often relies on the support provided by MV distribution networks. The structure of some MV distribution networks allows the substation ...

    • A tool for the assessment of the electromagnetic forces in power distribution transformers 

      Da Costa Lopes, Andrey; Sanz Bobi, Miguel Ángel; Rouco Rodríguez, Luis; Palacios Hielscher, Rafael; Flores Losada, Luis; Cirujano Ballesteros, Pablo (Departamento de Ingeniería Eléctrica. Universidade de Vigo (Santiago de Compostela, España), 2010-10-03)
      This paper compares the estimated electromagnetic forces due to short circuits in power transformers using two computational models. The first model is based on approximate analytical expressions of the electromagnetic ...

    • A unified framework for nonlinear dynamic simulation and modal analysis for control of large-scale power systems 

      Marinescu, Bogdan; Rouco Rodríguez, Luis (Sin editorial (Lieja, Bélgica), 22/08/2005)
      This paper presents a framework which allows an easy parallel use of both nonlinear and linear ap-proaches to analyze and damp power oscillations in inter-connected power systems. For this, the Small-Signal Sta-bility tool ...

    • Addressing intra-area oscillations and frequency stability after DC segmentation of a large AC power system 

      Robin, Mathieu Guillaume; Renedo Anglada, Javier; González Torres, Juan Carlos; García Cerrada, Aurelio; Rouco Rodríguez, Luis; Benchaib, Abdelkrim; García González, Pablo
      En las últimas décadas, diversos acontecimientos han puesto de manifiesto que las oscilaciones electromecánicas constituyen un grave problema para los grandes sistemas eléctricos de corriente alterna (CA) interconectados. ...

    • Ajuste de reguladores de turbinas hidráulicas con técnicas de estimación de parámetros. 

      Rouco Rodríguez, Luis; Zamora Macho, Juan Luis; González, M. (Universidad Pública de Navarra (Pamplona, España), 2012-01-26)
      Este artículo detalla un método de ajuste de reguladores de turbinas hidráulicas basado en técnicas de estimación de parámetros. Este método consiste en determinar los parámetros del regulador que minimizan el error entre ...

    • Un algoritmo heurístico de despacho preventivo de potencia activa. 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; López Camino, Gerardo (Universidad Pública de Navarra (Pamplona, España), 2012-01-26)
      Este artículo presenta un algorítmo heurístico de despacho preventivo de potencia activa. El propósito de este algoritmo es determinar la variación del despacho de potencia activa de un sistema eléctrico para que en caso ...

    • Alternativas en la protección frente a faltas a tierra en líneas de media tensión de distribución en redes con neutro puesto a tierra a través de reactancia 

      Rouco Rodríguez, Luis; Torres Santana, Jose Antonio; García Muñoz, José Manuel; Sánchez Paz, Javier (13/07/2016)
      Este artículo discute alternativas en la protección frente a faltas a tierra en líneas de media tensión de distribución en redes con neutro puesto a tierra a través de reactancia en una instalación concreta analizada ...

    • An Integrated Tool for Analysis of Power System Constraints in the Spanish Electricity Market 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López, G.; García Castillejo, J. (Sin editorial (Seattle, Estados Unidos de América), 2000-07-16)
      The role of the System Operator in the Spanish electricity market, as it started on January 1st 1998, is to determine the technical feasibility of the generation dispatch provided by the Market Operator. The security ...

    • An LP-based optimal power flow for transmission losses and generator reactive margins minimization 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López, G. (Sin editorial (Oporto, Portugal), 2001-09-10)
      This paper describes a mixed-integer linear programming optimal power flow. The objective function consists of minmizing transmission losses and generator reactive outputs. The problem constraints are the power flow equations ...

    • Análisis fundamental del impacto de la reserva primaria en sistemas eléctricos aislados 

      Elices Vallejo, Alberto; Rouco Rodríguez, Luis (Sin editorial (Madrid, España), 2001-07-04)
      Este artículo presenta un estudio de carácter fundamental del impacto de la reserva primaria de generación para evitar o reducir el deslastre de carga en sistemas aislados. El deslastre de carga puede ser debido a pérdidas ...

    • Aplicación práctica de un despacho preventivo de activa: Redespacho de generación efectivos y de compensación 

      Lobato Miguélez, Enrique; Rouco Rodríguez, Luis; Navarrete Fernández, María Isabel; Casanova Lafarga, Rosa; López Camino, Gerardo (Sin editorial (Madrid, España), 2001-07-04)
      Los criterios técnicos de operación del sistema eléctrico español exigen que los flujos de potencia por las líneas y transformadores del sistema estén dentro de valores admisible, en funcionamiento normal y en caso de ...