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  1. Diffusion of electric vehicles and their flexibility potential for smoothing residual demand
    a spatio-temporal analysis for Germany
    Autor*in: Arnold, Fabian; Lilienkamp, Arne; Namockel, Nils
    Erschienen: [2023]
    Verlag:  Institute of Energy Economics at the University of Cologne (EWI), Köln, Germany

    The transformation of the energy system causes increasing stress on distribution grid components. However, ŕexible EV charging, if incentivized adequately, can help mitigate this impact by reducing peaks in loads and feed-in. A comprehensive regional... mehr

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    Verlag (kostenfrei)
    Verlag (kostenfrei)
    Resolving-System (kostenfrei)

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signatur:
    DS 5
    Fernleihe:
    keine Fernleihe

     

    The transformation of the energy system causes increasing stress on distribution grid components. However, ŕexible EV charging, if incentivized adequately, can help mitigate this impact by reducing peaks in loads and feed-in. A comprehensive regional analysis is necessary to understand the potential of EV charging ŕexibility for reducing peaks on regional and national levels. To this end, we estimate regional residual demand time series for Germany for the years 2019, 2030 and 2045. We focus on modelling private EV diffusion via sigmoid functions and deriving driving and charging proőles based on micro mobility data. Further, we distinguish two deployment schemes for EV ŕexibility: (1) all EVs contribute to ŕattening the national residual load curve; (2) local EVs contribute to ŕattening regional residual load curves. We őnd that the residual load curves change structurally as positive and negative peaks in residual demand increase over the years on the regional and national levels. Although the absolute ŕexibility potential of EV home charging increases with the number of vehicles, its marginal utility to reduce load peaks declines. Especially in load-dominated regions, the national deployment of ŕexibility can result in higher regional demand peaks compared to a scenario without charging ŕexibility. The two approaches of ŕexibility activation can be contradictory in their effects: While regional incentivization is less efficient in reaching the smoothing in the national residual demand curve, national incentivization can even lead to increased strain on the local level.

     
    Export in Literaturverwaltung   RIS-Format
      BibTeX-Format
    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Weitere Identifier:
    hdl: 10419/286378
    Schriftenreihe: EWI working paper ; no 23, 04 (May 2023)
    Schlagworte: Flexibility; Electric vehicles; Residual load; Energy transition; Charging proőles
    Umfang: 1 Online-Ressource (circa 55 Seiten), Illustrationen
  2. Integrating EVs into distribution grids
    examining the effects of various DSO intervention strategies on optimized charging
    Autor*in: Lilienkamp, Arne; Namocke, Nils
    Erschienen: [2024]
    Verlag:  Institute of Energy Economics at the University of Cologne (EWI), Köln, Germany

    Adopting electric vehicles (EVs) and implementing variable electricity tariffs increase peak demand and the risk of congestion in distribution grids. To avert critical grid situations and sidestep expensive grid expansions, Distribution System... mehr

    Zugang:
    Verlag (kostenfrei)
    Verlag (kostenfrei)
    Resolving-System (kostenfrei)

    Standort:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signatur:
    DS 5
    Fernleihe:
    keine Fernleihe

     

    Adopting electric vehicles (EVs) and implementing variable electricity tariffs increase peak demand and the risk of congestion in distribution grids. To avert critical grid situations and sidestep expensive grid expansions, Distribution System Operators (DSOs) must have intervention rights, allowing them to curtail charging processes. Various curtailment strategies are possible, varying in spatio-temporal differentiation and possible discrimination. However, evaluating different strategies is complex due to the interplay of economic factors, technical requirements, and regulatory constraints - a complexity not fully addressed in the current literature. Our study introduces a sophisticated model to optimize electric vehicle charging strategies to address this gap. This model considers different tariff schemes (Fixed, Time-of-Use, and Real-Time) and incorporates DSO interventions (basic, variable, and smart) within its optimization framework. Based on the model, we analyze the ŕexibility demand and total electricity costs from the users’ perspective. Applying our model to a synthetic distribution grid, we őnd that ŕexible tariffs offer consumers only marginal economic benefits and increase the risk of grid congestion due to herding behavior. All curtailment strategies effectively alleviate congestion, with variable curtailment featuring spatio-temporal differentiation, approaching optimality regarding ŕexibility demand. Notably, applying curtailment from the users’ perspective does not lower cost savings significantly.

     
    Export in Literaturverwaltung   RIS-Format
      BibTeX-Format
    Quelle: Verbundkataloge
    Sprache: Englisch
    Medientyp: Buch (Monographie)
    Format: Online
    Weitere Identifier:
    hdl: 10419/286402
    Schriftenreihe: EWI working paper ; no 24, 01 (January 2024)
    Schlagworte: Distribution Grid; Electric Vehicles; Smart Charging; Flexibility
    Umfang: 1 Online-Ressource (circa 49 Seiten), Illustrationen