document

Power-based modelling of renewable variability in dispatch models with clustered time periods

Nycander, E. (author), Morales España, G.A. (author), Söder, L. (author)

The planning of future power systems with high shares of renewable generation requires modelling large and complex systems over long time periods, resulting in models which are computationally heavy to solve. For this reason methods that can be used to decrease the size of power system dispatch models are needed. A common method in large scale...

article 2022

document

Effects of more available interconnection capacity on the energy transition

van der Welle, A.J. (author), Hernandez Serna, R. (author), Morales Espana, G.A. (author), Hers, J.S. (author)

report 2022

document

Stochastic bidding of volume and price in constrained energy and reserve markets

Romero, N. (author), van der Linden, K. (author), Morales España, G.A. (author), de Weerdt, M.M. (author)

The power system is undergoing a significant change as it adapts to the intermittency and uncertainty from renewable generation. Flexibility from loads such as electric vehicles (EVs) can serve as reserves to sustain the supply-demand balance in the grid. Some reserve markets have rules for participation that are computationally challenging for...

article 2021

document

Too Much of a Good Thing: Reducing Emissions by Curtailing Renewables in Power Systems Operation

Morales-Espana, G.A. (author), Nycander, E. (author), Sijm, J. (author)

To lower pollution, it became imperative to integrate as much renewable energies as possible in power systems. This has been translated into forcing the maximum production of variable renewable energy (VRE) ---wind and solar--- into power systems operation. The increasing operational costs to maximize the VRE output became the price to pay in...

conference paper 2021

document

Decarbonization of Electricity Systems in Europe

Strbac, G. (author), Papadaskalopoulos, D. (author), Chrysanthopoulos, N. (author), Estanqueiro, A. (author), Algarvio, H. (author), Lopes, F. (author), de Vries, L. (author), Morales-Espana, G.A. (author), Sijm, J. (author), Hernandez-Serna, R. (author), Kiviluoma, J. (author), Helisto, N. (author)

article 2021

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Integrated Electricity, Gas and Hydrogen Systems Modelling: A case of North Sea Countries

Koirala, B.P. (author), Hers, J.S. (author), Melese, Y. (author), Morales España, G.A. (author), Ozdemir, H. (author), Sijm, J.P.M. (author), Weeda, M. (author)

conference paper 2021

document

Design of ancillary service markets and products. Challenges and recommendations for EU renewable power systems. Deliverable D3.3

van der Welle, A.J. (author), Morales España, G.A. (author), Sijm, J.P.M. (author), Hernandez Serna, R. (author)

report 2021

document

Reducing CO2 emissions by curtailing renewables: examples from optimal power system operation

Morales España, G.A. (author), Nycander, E. (author), Sijm, J.P.M. (author)

To lower CO2 emissions, policy makers want to integrate as much variable renewable energy (VRE) as possible into power systems. This has been translated into targets for VRE as a share of total electricity generation and policies that aim to maximize the use of electricity available from VRE sources. However, in this paper we demonstrate that it...

article 2021

document

Modelling of decarbonisation transition in national integrated energy system with hourly operational resolution

Dieguez, M.S. (author), Fattahi, A. (author), Sijm, J.P.M. (author), Morales España, G.A. (author), Faaij, A. (author)

In this paper, we present an optimisation integrated energy system model (IESA-Opt) for the Netherlands with the use of a linear programming formulation. This state-of-the-art model represents a scientific contribution as it integrates a European power-system model with a complete sectoral representation of the energy system technologies and...

article 2021

document

Impact of operational details and temporal representations on investment planning in energy systems dominated by wind and solar

Helisto, N. (author), Kiviluoma, J. (author), Morales España, G.A. (author), O'Dwyer, C. (author)

Planning of future energy systems with higher prevalence of wind and solar energy requires a careful representation of the temporal and operational characteristics of the system in the investment planning model. This study aims to identify the aspects that should be considered when selecting the representation for a particular system. To...

article 2021

document

Security constrained unit commitment with continuous time-varying reserves

Nycander, E. (author), Morales España, G.A. (author), Soder, L. (author)

This paper presents a security constrained unit commitment (SCUC) with continuous intra-hour time-varying reserves. The hourly formulation extends the power-based UC formulation and has reserves which vary continuously within the hour, as opposed to the traditional hourly energy-based SCUC that uses constant reserves within the hour. We show...

article 2021

document

Integrated electricity, hydrogen and methane system modelling framework: Application to the Dutch Infrastructure Outlook 2050

Koirala, B. (author), Hers, S. (author), Morales España, G.A. (author), Ozdemir, O. (author), Sijm, J.P.M. (author), Weeda, M. (author)

article 2021

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A review of the role of spatial resolution in energy systems modelling: lessons learned and applicability to the North Sea region

Martínez Gordón, R. (author), Morales España, G.A. (author), Sijm, J.P.M. (author), Faaij, A.P.C. (author)

The importance of spatial resolution for energy modelling has increased in the last years. Incorporating more spatial resolution in energy models presents wide benefits, but it is not straightforward, as it might compromise their computational performance. This paper aims to provide a comprehensive review of spatial resolution in energy models,...

article 2021

document

Classifying and modelling demand response in power systems

Morales España, G.A. (author), Martínez Gordón, R. (author), Sijm, J.P.M. (author)

Demand response (DR) is expected to play a major role in integrating large shares of variable renewable energy (VRE) sources in power systems. For example, DR can increase or decrease consumption depending on the VRE availability, and use generating and network assets more efficiently. Detailed DR models are usually very complex, hence,...

article 2021

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Measuring accuracy and computational capacity trade-offs in an hourly integrated energy system model

Fattahi, A. (author), Sánchez Diéguez, M. (author), Sijm, J.P.M. (author), Morales España, G.A. (author)

article 2021

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Power-Based Generation Expansion Planning for Flexibility Requirements

Tejada-Arango, D.A. (author), Morales-Espana, G.A. (author), Wogrin, S. (author)

article 2020

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Simultaneous reduction of emissions and costs by curtailing renewables in optimal operation of power systems

Morales España, G.A. (author), Sijm, J.P.M. (author)

To lower pollution, it became imperative to integrate as much renewable energies as possible in power systems. This has been translated into forcing the maximum production of variable renewable energy (VRE) ---wind and solar--- into power systems operation. The increasing operational costs to maximize the VRE output became the price to pay in...

conference paper 2020

document

Large-Scale Energy Storage in Salt Caverns and Depleted Fields (LSES) – Project Findings

Groenenberg, R.M. (author), Koornnef, J.M. (author), Sijm, J.P.M. (author), Janssen, G.J.M. (author), Morales España, G.A. (author), van Stralen, J. (author), Hernandez-Serna, R. (author), Smekens, K.E.L. (author), Juez-Larre, J. (author), Goncalves Machado, C. (author), Wasch, L.J. (author), Dijkstra, H.E. (author), Wassing, B.B.L. (author), Orlic, B. (author), Brunner, L.G. (author), van der Valk, K. (author), van Unen, M. (author), Hajonides van der Meulen, T.C. (author), Kranenburg-Bruinsma, K.J. (author), Winters, E. (author), Puts, H. (author), van Popering-Verkerk, J. (author), Duijn, M. (author)

report 2020

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The role of large-scale energy storage in the energy systems of the Netherlands 2030-2050

Sijm, J.P.M. (author), Janssen, G.J.M. (author), Morales España, G.A. (author), van Stralen, J. (author), Hernandez-Serna, R. (author), Smekens, K.E.L. (author)

report 2020

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A convex approximation for optimal DER scheduling on unbalanced power distribution networks [Una aproximación convexa para la programación óptima de DERs en sistemas de distribución desbalanceados]

Serna-Suárez, I.D. (author), Carrillo-Caicedo, G. (author), Morales-España, G.A. (author), de Weerdt, M. (author), Ordóñez-Plata, G. (author)

The increase of solar photovoltaic penetration poses several challenges for distribution network operation, mainly because such high penetration might cause reliability problems like protection malfunctioning, accelerated decay of voltage regulators and voltage violations. Existing solutions based on mathematical programming solve a 3-phase...

article 2019