Logo des Repositoriums

Auflistung nach Schlagwort "Renewable Energy"

1 - 2 von 2
  • Zeitschriftenartikel
    Dezentrale vernetzte Energiebewirtschaftung (DEZENT) im Netz der Zukunft
    (Wirtschaftsinformatik: Vol. 49, No. 5, 2007) Wedde, Horst F.; Lehnhoff, Sebastian; Handschin, Edmund; Krause, Olav
    KernpunkteZiel des Projekts DEZENTist die Entwicklung eines verteilten Energiemanagementsystems, mit dem sich eine Vielzahl dezentraler Energieumwandlungsanlagen (erneuerbarer Energien) zu einem großen regionalen Netz zusammenschließen lassen.Technische, wirtschaftliche und ökologische Randbedingungen werden berücksichtigt.Die Netzleistung steht sowohl der allgemeinen Versorgung wie auch der Reserveregelung zur Verfügung.Das Management des Netzes wird durch ein verteiltes adaptives sicherheitskritisches Realzeit-Multiagentensystem realisiert.Die dezentrale Führung einer Vielzahl kooperierender, heterogener Systeme kann hinsichtlich Preis bzw. bereitgestellter Energie günstiger sein als bei zentral gesteuerter Versorgung.AbstractGiven the sharply rising costs for traditional energy (based on coal, fossil oil or gas etc.) over the past few years renewable energy sources such as wind, sun, water, or seed oil have favorably come into the picture as economically desirable and ecologically clean alternatives. The corresponding power facilities (e.g. wind power stations, solar panels, block heat & power plants) are widely distributed and are quite heterogeneous regarding their productivity (capacity and reliability) yet at the same time transport paths and costs are at a minimal level. (In the near future it will be possible to cover all needs from such sources.) For guaranteeing both the adaptive integration of the diverse facilities and a balanced level of supply under (locally) highly unpredictable energy production we present a bottom-up power grid management architecture. A key novelty of our approach is a completely decentralized management for negotiating the available power supply and needs. This is realized through a safety-critical, real-time multi-agent system where bids and offers are negotiated on the (electrically) shortest time basis of 0.5 sec. While the system is secure against malicious attacks it exhibits a high amount of fault tolerance where the latter corresponds well to the exceptional production safety of the widely distributed facilities. Beyond the high supply reliability under the decentralized management of distributed facilities we demonstrate that both operation costs and consumer prices could be assumed lower than under a centralized management and architecture.
  • Konferenzbeitrag
    Time and Money Matters for Sustainability: Insights on User Preferences on Renewable Energy for Electric Vehicle Charging Stations
    (Proceedings of Mensch und Computer 2024, 2024) Du, Delong; Vavouris, Apostolos; Veisi, Omid; Jin, Lu; Stevens, Gunnar; Stankovic, Lina; Stankovic, Vladimir; Boden, Alexander
    Charging electric vehicles (EVs) with renewable energy can lessen their environmental impact. However, the fluctuating availability of renewable energy affects the sustainability of public EV charging stations. Nearby public charging stations may utilize differing energy sources due to their microgrid connections - ranging from exclusively renewable to non-renewable or a combination of both - highlighting the substantial variability in energy supply types within short distances. This study investigates the near-future scenario of integrating dynamic renewable energy availability in charging station navigation to impact the choices of EV users towards renewable sources. We conducted a within-subjects design survey with 50 car users and semi-structured interviews with 10 EV users from rural, suburban, and urban areas. The results show that when choosing EV charging stations, drivers often prioritize either time savings or money savings based on the driving scenarios that influence drivers’ consumer value. Notably, EV users tend to select renewable-powered stations when they align with their main priority, be it saving money or time. This study offers end-user insights into the front-end graphic user interface and the development of the back-end ranking algorithm for navigation recommender systems that integrate dynamic renewable energy availability for the sustainable use of electric vehicles.