TY - JOUR A1 - Selleneit, Volker A1 - Mast, Tanja A1 - Holzhammer, Uwe T1 - Method to describe and rate the ability to provide flexibility of residual power providers in electricity grids with a high share of variable renewable energies JF - CIRED - Open Access Proceedings Journal N2 - With an increasing ratio of variable renewable energies in Germany, power supply has to be ensured by providing flexibility from controllable supply and demand energy conversion units. For residual electricity supply, utilities in the industrial sector or flexible biogas plants may be suitable flexibility options. To describe and rate different technologies or utilities in terms of their ability to provide flexibility, a definition of flexibility and an innovative method to describe flexibility considering the grid requirements is elaborated. The method is based on a solid definition of flexibility indicators suitable for all technologies. For an increased flexibility, in many cases, it is reasonable to add supporting technologies like a storage to a utility or biogas combined heat and power (CHP). Such utility configurations can also be described with the elaborated method. The method can also make a valuable contribution to all distribution systems or utility system modellers as it can be taken as a basis for the modelling. In this study, the definition of flexibility indicators is described in detail and used on the example of a biogas CHP plant. UR - https://doi.org/10.1049/oap-cired.2021.0294 KW - Energy resources KW - Distribution networks KW - Thermal power stations and plants KW - Biofuel and biomass resources KW - Power supply quality and harmonics KW - Control of electric power systems Y1 - 2020 UR - https://doi.org/10.1049/oap-cired.2021.0294 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-17043 SN - 2515-0855 VL - 2020 IS - 1 SP - 154 EP - 157 PB - IET CY - Stevenage ER - TY - BOOK A1 - Eltrop, Ludger A1 - Nagel, Sylvio A1 - Holzhammer, Uwe A1 - Mast, Tanja A1 - Selleneit, Volker A1 - Tronnier, Annika A1 - Wachinger, Gisela ED - Eltrop, Ludger ED - Holzhammer, Uwe T1 - Methodenhandbuch "Bioenergie als Flexibilitätsoption im Energiesystem" T3 - Schriftenreihe "Energetische Biomassenutzung", Band 21 UR - https://doi.org/10.48480/m6ak-zr53 Y1 - 2021 UR - https://doi.org/10.48480/m6ak-zr53 SN - 2701-2719 PB - Deutsches Biomasseforschungszentrum gemeinnützige GmbH CY - Leipzig ER - TY - CHAP A1 - Dotzauer, Martin A1 - Büchner, Daniel A1 - Eltrop, Ludger A1 - Härdtlein, Marlies A1 - Henning, Christiane A1 - Herrmann, André A1 - Holzhammer, Uwe A1 - Kornatz, Peter A1 - Mast, Tanja A1 - Nagel, Sylvio A1 - Oehmichen, Katja A1 - Philipp, Matthias A1 - Pohl, Marcel A1 - Selleneit, Volker A1 - Thrän, Daniela ED - Thrän, Daniela ED - Pfeiffer, Diana T1 - Flexible Bereitstellung von Bioenergie T2 - Methodenhandbuch: Stoffstromorientierte Bilanzierung der Klimagaseffekte: Methoden zur Bestimmung von Technologiekennwerten, Gestehungskosten und Klimagaseffekten von Vorhaben im Rahmen des BMWi-Forschungsnetzwerkes Bioenergie/ BMWi-Förderbereich „Energetische Biomassenutzung“ UR - https://doi.org/10.48480/ddpt-ys74 Y1 - 2021 UR - https://doi.org/10.48480/ddpt-ys74 SN - 978-3-946629-58-0 SN - 2701-2719 SP - 56 EP - 108 PB - Deutsches Biomasseforschungszentrum gemeinnützige GmbH CY - Leipzig ET - Version 5 ER - TY - CHAP A1 - Mast, Tanja A1 - Holzhammer, Uwe A1 - Philipp, Matthias ED - Nelles, Michael T1 - SmartBio : Biogasanlagen als Akteur in neuen intelligenten, regionalen Märkten T2 - Tagungsband 12. Rostocker Bioenergieforum 2018 Y1 - 2018 UR - https://www.openagrar.de/receive/dimport_mods_00001878 SN - 978-3-86009-473-0 SP - 143 EP - 150 PB - Universität Rostock CY - Rostock ER - TY - CHAP A1 - Mast, Tanja A1 - Nagel, Sylvio A1 - Holzhammer, Uwe A1 - Eltrop, Ludger T1 - Biogasanlagen neu denken BT - technisch-ökonomische Charakterisierung für die Einbindung in die modellgestützte Systemanalyse T2 - Tagungsband 14. Rostocker Bioenergieforum 2020, 19. Dialog Abfallwirtschaft MV UR - https://doi.org/10.18453/rosdok_id00002650 Y1 - 2020 UR - https://doi.org/10.18453/rosdok_id00002650 SN - 978-3-86009-507-2 SP - 123 EP - 132 PB - Universität Rostock CY - Rostock ER - TY - CHAP A1 - Nagel, Sylvio A1 - Mast, Tanja A1 - Holzhammer, Uwe A1 - Eltrop, Ludger T1 - Die Rolle der Bioenergie im Energie- und Mobilitätssystem in Deutschland BT - Ergebnisse einer modellgestützten Systemanalyse T2 - Tagungsband 14. Rostocker Bioenergieforum 2020, 19. Dialog Abfallwirtschaft MV UR - https://doi.org/10.18453/rosdok_id00002650 Y1 - 2020 UR - https://doi.org/10.18453/rosdok_id00002650 SN - 978-3-86009- 507-2 SP - 47 EP - 56 PB - Universität Rostock CY - Rostock ER - TY - CHAP A1 - Mast, Tanja A1 - Koller, Maria A1 - Holzhammer, Uwe T1 - Verfügbarkeit und Erlösmöglichkeiten unterschiedlicher Biogasanlagenkonzepte im Smart-Market-Ansatz T2 - Tagungsband 14. Rostocker Bioenergieforum 2020, 19. Dialog Abfallwirtschaft MV UR - https://doi.org/10.18453/rosdok_id00002650 Y1 - 2020 UR - https://doi.org/10.18453/rosdok_id00002650 SN - 978-3-86009- 507-2 SP - 391 EP - 397 PB - Universität Rostock CY - Rostock ER - TY - JOUR A1 - El Makroum, Reda A1 - Khallaayoun, Ahmed A1 - Lghoul, Rachid A1 - Mehta, Kedar A1 - Zörner, Wilfried T1 - Home Energy Management System Based on Genetic Algorithm for Load Scheduling: A Case Study Based on Real Life Consumption Data JF - Energies N2 - This paper proposes a home energy management system able to achieve optimized load scheduling for the operation of appliances within a given household. The system, based on the genetic algorithm, provides recommendations for the user to improve the way the energy needs of the home are handled. These recommendations not only take into account the dynamic pricing of electricity, but also the optimization for solar energy usage as well as user comfort. Historical data regarding the times at which the appliances have been used is leveraged through a statistical method to integrate the user’s preference into the algorithm. Based on real life appliance consumption data collected from a household in Morocco, three scenarios are established to assess the performance of the proposed system with each scenario having different parameters. Running the scenarios on the developed MATLAB script shows a cost saving of up to 63.48% as compared to a base scenario for a specific day. These results demonstrate that significant cost saving can be achieved while maintaining user comfort. The addition of supplementary shiftable loads (i.e., an electric vehicle) to the household as well as the limitations of such home energy management systems are discussed. The main contribution of this paper is the real data and including the user comfort as a metric in in the home energy management scheme. UR - https://doi.org/10.3390/en16062698 KW - home energy management KW - load scheduling KW - genetic algorithm KW - user comfort Y1 - 2023 UR - https://doi.org/10.3390/en16062698 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-32284 SN - 1996-1073 VL - 16 IS - 6 PB - MDPI CY - Basel ER - TY - JOUR A1 - Kaminski Küster, Kristie A1 - Daniel, Gebbran A1 - Aoki, Alexandre Rasi A1 - Lambert-Torres, Germano A1 - Navarro Gevers, Daniel A1 - Impinnisi, Patricio A1 - da Silva Pinto, Cleverson Luiz T1 - Adoption of Local Peer-to-Peer Energy Markets: Technical and Economical Perspectives for Utilities JF - Energies N2 - Peer-to-peer (P2P) energy markets constitute a promising approach for locally coordinating the increasing amount of distributed energy resources (DERs) in the distribution system. Although the benefits of P2P markets for the prosumers are already well understood, their impact on utilities is not well discussed nor well understood. This hinders the development of regulatory frameworks, which are still needed to allow for the widespread adoption of decentralized energy markets in any interested country. So far, research has been conducted in specific isolated aspects, making it difficult to understand the overall implications for utilities. The present study aims to tackle this research gap by comprehensively evaluating P2P markets’ effects, considering utilities as primary stakeholders. A qualitative roadmap with the overall benefits and challenges of adopting P2P by utilities is outlined to reach this purpose. Technical and economic criteria are assigned for comparing a P2P market to the current regulatory framework. Each criterion is evaluated in a co-simulation platform connecting a market model to a power flow model. Market performance is assessed by revenue analysis, and grid operation indicators evaluate grid performance. Furthermore, network fees are introduced as compensation mechanisms for the net revenue loss. Comparison scenarios encompass network fees and the number of agents, PV, and storage penetration. Results demonstrate that there is no possible benefit for both utilities and prosumers simultaneously if looking exclusively at the financial balance of the market. An equilibrium in benefits for all stakeholders is achievable if non-financial metrics are considered in an integrated market and fee structure analysis. Moreover, results demonstrate that the design of market structures must be sensitive to network configurations and DER penetration changes. This study contributes toward comprehending how the utilities could embrace P2P markets as a feasible solution for grid coordination challenges, opening a new set of questions for further research. UR - https://doi.org/10.3390/en16052364 KW - co-simulation KW - distributed energy resources KW - impact analysis KW - local energy markets KW - microgrids KW - peer-to-peer energy trading Y1 - 2023 UR - https://doi.org/10.3390/en16052364 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-32304 SN - 1996-1073 VL - 16 IS - 5 PB - MDPI CY - Basel ER - TY - JOUR A1 - Stöckl, Martin A1 - Idda, Johannes A1 - Selleneit, Volker A1 - Holzhammer, Uwe T1 - Flexible Operation to Reduce Greenhouse Gas Emissions along the Cold Chain for Chilling, Storage, and Transportation - A Case Study for Dairy Products JF - Sustainability N2 - The further expansion of renewable energies in Germany requires flexible consumers to balance fluctuations in electricity production from variable renewable energies. Cold storage warehouses, due to their inherent storage capacity and widespread use, are well-suited for integrating more renewable energies. The potential of cold storage warehouses is often viewed in isolation and not in conjunction with the cold chain’s upstream and downstream processes. By adjusting the temperatures within the processes, the individual links in the cold chain can be made flexible. To assess the effects of flexibilization on emissions and electricity costs, thermodynamic models of the individual links in the cold chain and of a yogurt pallet are developed and linked together. Due to temperature fluctuations in the products resulting from the flexibilization, emission evaluations must be considered throughout the cold chain. Results of the simulation for the study period show that emissions reductions and electricity cost savings can be achieved in all three links when they are made flexible. However, the savings vary in magnitude. Only minor savings can be achieved in the cooling tunnel. The greatest potential for savings is in refrigerated transport, if deeper cooling occurs in the process before, i.e., in the cold storage warehouse. UR - https://doi.org/10.3390/su152115555 KW - flexibility KW - flexible energy demand KW - system efficiency KW - cold storage warehouse KW - refrigerated transport KW - cold chain KW - variable renewable energies KW - industry KW - dairies Y1 - 2023 UR - https://doi.org/10.3390/su152115555 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-40844 SN - 2071-1050 VL - 15 IS - 21 PB - MDPI CY - Basel ER -