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    • Applications of bilevel optimization in energy and electricity markets 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Pineda Morente, Salvador (Springer (Cham, Suiza), 24/11/2020)
      Desde el inicio del proceso de liberalización del sector energético y la llegada de los mercados eléctricos, la toma de decisiones se ha alejado de los planificadores centralizados y se ha convertido en responsabilidad de ...

    • Assessing the impact of inertia and reactive power constraints in generation expansion planning 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Botterud, Audun; Delikaraoglou, Stefanos (15/12/2020)
      En el camino hacia sistemas de energía con altas penetraciones renovables y, en última instancia, carbono neutral, la generación cada vez más síncrona está siendo desplazada por la generación renovable variable que actualmente ...

    • How technical operational details affect generation expansion in oligopolistic power markets 

      Wogrin, Sonja; Centeno Hernáez, Efraim; Nogales Gómez, Adelaida (Institute for Operations Research and the Management Sciences (Nashville, Estados Unidos de América), 13/11/2016)
      The increased deployment of renewable technologies, that are often discontinuous and uncertain, is dramaticaly changing the unit commitment of the rest of the generation facilities, increasing the need for cycling. As a ...

    • Investment in electric energy storage under uncertainty: a real options approach 

      Bakke, Ida; Fleten, Stein Erik; Hagfors, Lars Ivar; Hagspiel, Verena; Norheim, Beate; Wogrin, Sonja (01/07/2016)
      In this paper we develop a real options approach to evaluate the profitability of investing in a battery bank. The approach determines the optimal investment timing under conditions of uncertain future revenues and investment ...

    • Optimization and modeling as decision support tools in a transitioning power system 

      Wogrin, Sonja (Association des Economistes de l'Energie (París, Francia), 04/06/2015)
      In the last two decades, electric power systems have undergone drastic changes mostly due to the liberalization of the sector and the growing penetration of renewable energy sources in the generation mix. This talk presents ...

    • Optimizing storage operations in longer-term power system models 

      Wogrin, Sonja; Galbally, David; Reneses Guillén, Javier (Sin editorial (París, Francia), 04/06/2015)
      In a rapidly changing power system the proper characterization of storage behavior becomes an increasingly important issue. We propose a new formulation to capture storage behavior in medium -and long -term power system ...

    • Optimizing storage operations in transmission-constrained networks for medium-and long-term operation 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Centeno Hernáez, Efraim (Institute for Operations Research and the Management Sciences (Nashville, Estados Unidos de América), 13/11/2016)
      The main objective is to present a new approach to model the storage operation in the context of Medium-and Long-term Operational Planning (MLTOP). This approach is based on the system-state framework but including ...

    • Optimizing storage siting, sizing and technology portfolios in transmission-constrained networks 

      Wogrin, Sonja; Gayme, Dennice F. (01/11/2015)
      In this paper we propose a DC OPF framework for storage portfolio optimization in transmission constrained power networks. In particular, this model is designed to investigate two problems: (i) optimizing storage operation ...

    • Policy implications of downscaling the time dimension in power system planning models to represent variability in renewable output 

      Reichenberg, Lina; Siddiqui, Afzal Saeed; Wogrin, Sonja (15/09/2018)
      Due to computational constraints, power system planning models are typically unable to incorporate full annual temporal resolution. In order to represent the increased variability induced by large amounts of renewables, ...

    • Renewable generation expansion under different support schemes: a stochastic equilibrium approach 

      Pineda Morente, Salvador; Boomsma, Trine Krogh; Wogrin, Sonja (01/05/2018)
      Following the deregulation of electricity markets, a current challenge of policy makers is to facilitate the transition to a sustainable power system at the highest welfare for society. In this paper we investigate the ...

    • Transmission expansion planning outside the box: a bilevel approach 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Pineda Morente, Salvador; González Romero, Isaac Camilo (Springer (Cham, Suiza), 20/11/2020)
      Desde el inicio del proceso de liberalización del sector energético y la llegada de los mercados eléctricos, la toma de decisiones se ha alejado de los planificadores centralizados y ha pasado a ser responsabilidad de ...

    • Welfare-maximizing transmission capacity expansion under uncertainty 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Downward, Anthony; Philpott, Andy (18/02/2021)
      Aplicamos el paquete de optimización JuDGE a un modelo estocástico de líder-seguidor de múltiples etapas que determina un plan de expansión de la capacidad de transmisión para maximizar el bienestar social esperado de los ...

    • What is the cost of disregarding market feedback in transmission expansion planning? 

      González Romero, Isaac Camilo; Wogrin, Sonja; Gómez San Román, Tomás (Universidade do Porto; Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência (Oporto, Portugal), 09/09/2019)
      Under the current European market environment, transmission companies have to decide network expansion by maximizing social welfare. However, generation companies (GENCOs) decide their capacity expansion with the aim of ...

    • What time-period aggregation method works best for power system operation models with renewables and storage? 

      Wogrin, Sonja; Tejada Arango, Diego Alejandro; Pineda Morente, Salvador; Morales González, Juan Miguel (Universidade do Porto; Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência (Oporto, Portugal), 09/09/2019)
      In this paper we compare two cutting-edge timeperiod aggregation methodologies for power system models that consider both renewables and storage technologies: the chronological time-period clustering; and, the enhanced ...