Impact of using a different dispatch strategy in the operating phase than in the design phase for decentralized energy systems

verfasst von

Lukas Koenemann, Astrid Bensmann, Richard Hanke-Rauschenbach

Abstract

Innovative dispatch strategies are essential for renewable energy systems to ensure optimal performance, cost-effectiveness, and sustainability. Optimal dispatch is often assumed to design renewable energy systems, while rule-based dispatch strategies are usually applied in the operating phase. This study examines the effects of using a different dispatch strategy in the operating phase than in the design phase. For this purpose, a mathematical optimization model is used to design an energy system with two rule-based dispatch strategies and the optimal dispatch to evaluate their effects on system costs, component dimensioning, and selection. Three case studies were used to show that, firstly, the system cost, component dimensioning, and component selection change depending on the dispatch strategies used in the design phase. Second, we show that the planned costs increase by up to 10.54 % if the system is designed with an optimal dispatch but a rule-based strategy is used in the operating phase. Third, we show that the system cost would be up to 6.07 % lower if the correct rule-based strategy had been directly applied in the design phase. Furthermore, in the multi-energy system, with additional consideration of the heat demand, it was even found that the design with optimal dispatch can lead to undersized heat supply components, resulting in unreliable heat supply when a rule-based dispatch strategy is used in the operating phase. These findings highlight the critical impact of dispatch strategies on the economic and operational feasibility of renewable energy projects, emphasizing the need for integrated planning across both phases. This is crucial for optimizing system performance and cost-effectiveness. We recommend that engineers and planners consider these insights to enhance the reliability and efficiency of renewable energy system planning.

Organisationseinheit(en)

Fachgebiet Elektrische Energiespeichersysteme
Institut für Elektrische Energiesysteme

Externe Organisation(en)

WETEC Systems GmbH

Typ

Artikel

Journal

Energy Reports

Band

12

Seiten

955-967

Anzahl der Seiten

13

Publikationsdatum

12.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Energie (insg.)

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1016/j.egyr.2024.06.057 (Zugang: Offen)