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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 ...

    • Enhanced representative days and system states modeling for energy storage investment 

      Tejada Arango, Diego Alejandro; Domeshek, Maya; Wogrin, Sonja; Centeno Hernáez, Efraim
      The variability of renewable energy sources and the chronological dependency of energy storage makes it necessary to incorporate short-term dynamics in renewable energy availability and de-mand into medium and long-term ...

    • Gestión energética en sistemas eléctricos 

      Díaz Duran, Cristian; Tejada Arango, Diego Alejandro; Ramos Galán, Andrés; Latorre Canteli, Jesús María (Association des Economistes de l'Energie (París, Francia), 04/06/2015)
      Una correcta gestión energética de los sistemas eléctricos está directamente relacionada con una correcta planeación de los recursos, procurando garantizar la confiabilidad en el suministro. De ahí, la planeación debe ...

    • LEGO: The open-source Low-carbon Expansion Generation Optimization model 

      Wogrin, Sonja; Tejada Arango, Diego Alejandro; Gaugl, Robert; Klatzer, Thomas; Bachhiesl, Udo (01/07/2022)
      This paper introduces the open-source Low-carbon Expansion Generation Optimization (LEGO) model. It is a multi-purpose tool to carry out numerous techno-economic analyses of the energy sector, ranging from short-term unit ...

    • 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 ...

    • Power-based generation expansion planning for flexibility requirements 

      Tejada Arango, Diego Alejandro; Morales España, German Andres; Wogrin, Sonja; Centeno Hernáez, Efraim
      Flexibility requirements are becoming more relevant in power system planning due to the integration of variable Renewable Energy Sources (vRES). In order to consider these requirements Generation Expansion Planning (GEP) ...

    • Short-term storage signals in hydrothermal dispatch models using a linked representative periods approach 

      Tejada Arango, Diego Alejandro; Wogrin, Sonja; Siddiqui, Afzal Saeed; Centeno Hernáez, Efraim
      Short-term energy storage systems (STESS), e.g., batteries, are becoming one promising option to deal with flexibility require-ments in power systems due to the accommodation of renewable energy sources. Previous work using ...

    • The impact of convexity on expansion planning in low-carbon electricity markets 

      Wogrin, Sonja; Tejada Arango, Diego Alejandro; Delikaraoglou, Stefanos; Lamadrid, A.J.; Botterud, Audun (01/10/2022)
      Expansion planning models are tools frequently employed to analyze the transition to a carbon-neutral power system. Such models provide estimates for an optimal technology mix and optimal operating decisions, but they are ...

    • 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 ...

    • Transmission network expansion planning considering repowering and reconfiguration 

      Tejada Arango, Diego Alejandro; López-Lezama, Jesús M.; Rider, Marcos J.; Vinasco, Guillermo Enrique (15/07/2015)
      Transmission expansion planning (TEP) is a classic problem in electric power systems. In current optimization models used to approach the TEP problem, new transmission lines and two-winding transformers are commonly used ...

    • Transmission network expansion planning for the Colombian electrical system: connecting the Ituango hydroelectric power plant 

      Vinasco, Guillermo Enrique; Tejada Arango, Diego Alejandro; Da Silva, Emivan F.; Rider, Marcos J. (01/05/2014)
      The hydroelectric power plant HidroItuango represents a major expansion for the Colombian electrical system (with a total capacity of 2400 MW). This paper analyzes the possible interconnections and investments involved in ...

    • Unit Commitment with ACOPF Constraints: Practical Experience with Solution Techniques 

      Sánchez Martín, Pedro; Tejada Arango, Diego Alejandro; Wogrin, Sonja; Ramos Galán, Andrés
      El artículo describe experiencias prácticas de resolución de problemas de asignación de grupos de generación eléctrica que incluyen restricciones que modelan la red de transporte en su formulación de corriente alterna. Se ...

    • 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 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 ...

    • Which unit commitment formulation is best? A comparison framework 

      Tejada Arango, Diego Alejandro; Lumbreras Sancho, Sara; Sánchez Martín, Pedro; Ramos Galán, Andrés
      The Unit Commitment (UC) problem, which deter-mines the day-ahead dispatch of generation units, is one of the key problems in power systems operation. A long list of formulations that claim to solve this problem more ...