Hydro power flexibility for power systems with variable renewable energy sources: An IEA Task 25 collaboration

Daniel Huertas-Hernando (Corresponding Author), Hossein Farahmand, Hannele Holttinen, Juha Kiviluoma, Erkka Rinne, Lennart Söder, Michael Milligan, Eduardo Ibanez, Sergio Martín Martínez, Emilio Gomez-Lazaro, Ana Estanqueiro, Luis Rodrigues, Luis Carr, Serafin van Roon, Antje Gesa Orths, Peter Børre Eriksen, Alain Forcione, Nickie Menemenlis

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    Hydro power is one of the most flexible sources of electricity production. Power systems with considerable amounts of flexible hydro power potentially offer easier integration of variable generation, e.g., wind and solar. However, there exist operational constraints to ensure mid-/long-term security of supply while keeping river flows and reservoirs levels within permitted limits. In order to properly assess the effective available hydro power flexibility and its value for storage, a detailed assessment of hydro power is essential. Due to the inherent uncertainty of the weather-dependent hydrological cycle, regulation constraints on the hydro system, and uncertainty of internal load as well as variable generation (wind and solar), this assessment is complex. Hence, it requires proper modeling of all the underlying interactions between hydro power and the power system, with a large share of other variable renewables. A summary of existing experience of wind integration in hydro-dominated power systems clearly points to strict simulation methodologies. Recommendations include requirements for techno-economic models to correctly assess strategies for hydro power and pumped storage dispatch. These models are based not only on seasonal water inflow variations but also on variable generation, and all these are in time horizons from very short term up to multiple years, depending on the studied system. Another important recommendation is to include a geographically detailed description of hydro power systems, rivers' flows, and reservoirs as well as grid topology and congestion.
    Original languageEnglish
    Article numbere220
    JournalWiley Interdisciplinary Reviews: Energy and Environment
    Volume6
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2017
    MoE publication typeA1 Journal article-refereed

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    Rivers
    river flow
    hydrological cycle
    congestion
    Electricity
    Topology
    topology
    electricity
    Economics
    inflow
    weather
    methodology
    renewable energy source
    Water
    economics
    modeling
    simulation
    Uncertainty
    water
    recommendation

    Cite this

    Huertas-Hernando, Daniel ; Farahmand, Hossein ; Holttinen, Hannele ; Kiviluoma, Juha ; Rinne, Erkka ; Söder, Lennart ; Milligan, Michael ; Ibanez, Eduardo ; Martínez, Sergio Martín ; Gomez-Lazaro, Emilio ; Estanqueiro, Ana ; Rodrigues, Luis ; Carr, Luis ; van Roon, Serafin ; Orths, Antje Gesa ; Eriksen, Peter Børre ; Forcione, Alain ; Menemenlis, Nickie. / Hydro power flexibility for power systems with variable renewable energy sources : An IEA Task 25 collaboration. In: Wiley Interdisciplinary Reviews: Energy and Environment. 2017 ; Vol. 6, No. 1.
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    abstract = "Hydro power is one of the most flexible sources of electricity production. Power systems with considerable amounts of flexible hydro power potentially offer easier integration of variable generation, e.g., wind and solar. However, there exist operational constraints to ensure mid-/long-term security of supply while keeping river flows and reservoirs levels within permitted limits. In order to properly assess the effective available hydro power flexibility and its value for storage, a detailed assessment of hydro power is essential. Due to the inherent uncertainty of the weather-dependent hydrological cycle, regulation constraints on the hydro system, and uncertainty of internal load as well as variable generation (wind and solar), this assessment is complex. Hence, it requires proper modeling of all the underlying interactions between hydro power and the power system, with a large share of other variable renewables. A summary of existing experience of wind integration in hydro-dominated power systems clearly points to strict simulation methodologies. Recommendations include requirements for techno-economic models to correctly assess strategies for hydro power and pumped storage dispatch. These models are based not only on seasonal water inflow variations but also on variable generation, and all these are in time horizons from very short term up to multiple years, depending on the studied system. Another important recommendation is to include a geographically detailed description of hydro power systems, rivers' flows, and reservoirs as well as grid topology and congestion.",
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    Huertas-Hernando, D, Farahmand, H, Holttinen, H, Kiviluoma, J, Rinne, E, Söder, L, Milligan, M, Ibanez, E, Martínez, SM, Gomez-Lazaro, E, Estanqueiro, A, Rodrigues, L, Carr, L, van Roon, S, Orths, AG, Eriksen, PB, Forcione, A & Menemenlis, N 2017, 'Hydro power flexibility for power systems with variable renewable energy sources: An IEA Task 25 collaboration', Wiley Interdisciplinary Reviews: Energy and Environment, vol. 6, no. 1, e220. https://doi.org/10.1002/wene.220

    Hydro power flexibility for power systems with variable renewable energy sources : An IEA Task 25 collaboration. / Huertas-Hernando, Daniel (Corresponding Author); Farahmand, Hossein; Holttinen, Hannele; Kiviluoma, Juha; Rinne, Erkka; Söder, Lennart; Milligan, Michael; Ibanez, Eduardo; Martínez, Sergio Martín; Gomez-Lazaro, Emilio; Estanqueiro, Ana; Rodrigues, Luis; Carr, Luis; van Roon, Serafin; Orths, Antje Gesa; Eriksen, Peter Børre; Forcione, Alain; Menemenlis, Nickie.

    In: Wiley Interdisciplinary Reviews: Energy and Environment, Vol. 6, No. 1, e220, 01.01.2017.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Huertas-Hernando, Daniel

    AU - Farahmand, Hossein

    AU - Holttinen, Hannele

    AU - Kiviluoma, Juha

    AU - Rinne, Erkka

    AU - Söder, Lennart

    AU - Milligan, Michael

    AU - Ibanez, Eduardo

    AU - Martínez, Sergio Martín

    AU - Gomez-Lazaro, Emilio

    AU - Estanqueiro, Ana

    AU - Rodrigues, Luis

    AU - Carr, Luis

    AU - van Roon, Serafin

    AU - Orths, Antje Gesa

    AU - Eriksen, Peter Børre

    AU - Forcione, Alain

    AU - Menemenlis, Nickie

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    N2 - Hydro power is one of the most flexible sources of electricity production. Power systems with considerable amounts of flexible hydro power potentially offer easier integration of variable generation, e.g., wind and solar. However, there exist operational constraints to ensure mid-/long-term security of supply while keeping river flows and reservoirs levels within permitted limits. In order to properly assess the effective available hydro power flexibility and its value for storage, a detailed assessment of hydro power is essential. Due to the inherent uncertainty of the weather-dependent hydrological cycle, regulation constraints on the hydro system, and uncertainty of internal load as well as variable generation (wind and solar), this assessment is complex. Hence, it requires proper modeling of all the underlying interactions between hydro power and the power system, with a large share of other variable renewables. A summary of existing experience of wind integration in hydro-dominated power systems clearly points to strict simulation methodologies. Recommendations include requirements for techno-economic models to correctly assess strategies for hydro power and pumped storage dispatch. These models are based not only on seasonal water inflow variations but also on variable generation, and all these are in time horizons from very short term up to multiple years, depending on the studied system. Another important recommendation is to include a geographically detailed description of hydro power systems, rivers' flows, and reservoirs as well as grid topology and congestion.

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