TY - JOUR A1 - Selleneit, Volker A1 - Stöckl, Martin A1 - Holzhammer, Uwe T1 - System efficiency: methodology for rating of industrial utilities in electricity grids with a high share of variable renewable energies BT - a first approach JF - Renewable and Sustainable Energy Reviews UR - https://doi.org/10.1016/j.rser.2020.109969 KW - system efficiency KW - industrial utilities KW - variable renewable energies KW - residual power KW - flexibility KW - electricity price time series Y1 - 2020 UR - https://doi.org/10.1016/j.rser.2020.109969 SN - 1364-0321 VL - 2020 IS - 130 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Selleneit, Volker A1 - Stöckl, Martin A1 - Philipp, Matthias A1 - Mast, Tanja A1 - Holzhammer, Uwe A1 - Schlosser, Florian T1 - System efficiency rating of industrial utilities in electricity grids with a high share of variable renewable energies JF - Chemical Engineering Transactions UR - https://doi.org/10.3303/CET1976163 Y1 - 2019 UR - https://doi.org/10.3303/CET1976163 SN - 2283-9216 VL - 2019 IS - 76 SP - 973 EP - 978 PB - AIDIC CY - Mailand ER - TY - JOUR A1 - Stöckl, Martin A1 - Selleneit, Volker A1 - Philipp, Matthias A1 - Holzhammer, Uwe T1 - An approach to calculate electricity costs for the german industry for a system efficient design by combining energy efficiency and demand response JF - Chemical Engineering Transactions UR - https://doi.org/10.3303/CET1976191 Y1 - 2019 UR - https://doi.org/10.3303/CET1976191 SN - 2283-9216 VL - 2019 IS - 76 SP - 1141 EP - 1146 PB - AIDIC CY - Mailand ER - 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 - 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 - TY - JOUR A1 - Selleneit, Volker A1 - Holzhammer, Uwe T1 - Eigenenergieversorgung oder mehr Resilienz durch Flexibilisierung? JF - VDI energie + umwelt UR - https://doi.org/10.37544/2942-7347-2024-5-6-53 Y1 - 2024 UR - https://doi.org/10.37544/2942-7347-2024-5-6-53 SN - 2942-7347 VL - 1 IS - 5-6 SP - 53 EP - 57 PB - VDI Fachmedien CY - Düsseldorf ER -