SPP 1984:  Hybrid and multimodal energy systems: System theoretical methods for the transformation and operation of complex networks

• Subject Area: Computer Science, Systems and Electrical Engineering
• Term: since 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 313504828

The energy system consists of interconnected and geographically distributed structures, which are required to meet highest reliability and security standards. The transformation towards sustainable and widely distributed renewable energy sources does not only significantly change established structures but also the system behavior and dynamics. The electrical energy system is becoming interlinked with other energy grids transforming towards multimodal energy systems. The electrical grids themselves will incorporate HVDC-links into the AC-grid, which will lead to hybrid systems. All the above developments require completely new planning, control and operation strategies due to the changing overall system structure, dynamics and the growing complexity.The Priority Program targets new systems theories, concepts and methods for the transformation of the electrical energy system towards hybrid and multimodal networks that are pervaded by information and communication technologies. The research delivers a contribution for reliable and resilient energy systems under the condition of changing generation and supply paradigms.The programme¿s key objective is the research in system structures of different kinds of energy grids, technologies and operation schemes as well as appropriate modeling, analysis and optimization concepts. New methodological approaches for systems prone to forecast errors and uncertainty shall be developed for their usage in resilient and complex energy network structures. These approaches could be based for instance on complex networks theory, distributed control and optimization strategies or autonomous agent-based and self-organizing systems together with respective information and communication technologies. Because of the flexibilities and degrees of freedom for the planning and operation of such large-scale interconnected hybrid and multimodal energy systems, it is necessary to develop new methods, which enable probabilistic risk and uncertainty assessments for the provision of fault-tolerance and stabilizing mechanisms and reserves.Systems theory can deliver reduced but appropriate system models to determine sensitivities, stable parameter ranges, phase transitions ¿ and more generally ¿ to gain insights into the complex non-linear interactions within multimodal systems. Further investigations with realistic scope and modeling detail may only be conducted as numerical simulations based on statistical designs for scenarios and experiments. Results are expected to be technology-invariant and transferable to future energy systems in general.

• DFG Programme: Priority Programmes
• International Connection: Switzerland, USA

Projects

• Consistent control design for the coordination of distributed actors in a multilayered integrated grid system (Applicants Kurths, Jürgen ;  Raisch, Jörg ;  Schiffer, Johannes )
• Coordination Funds (Applicant Rehtanz, Christian )
• Development of Novel Control Strategies and Equivalent Models for Wide-Area Interconnected Hybrid and Multimodal AC-DC Power Systems (Applicant Myrzik, Johanna M.A. )
• Development of Novel Models and Control Methods for Multilevel-VSC Multiterminal HVDC-Systems for Improving the Stability of Interconnected AC- and DC-Grids (Applicant Luther, Matthias )
• Distributed Dynamic Security Control: Continuation of project within SPP1984 (Applicants Mehrmann, Volker ;  Strunz, Kai )
• Distributed Optimization in Smart Grids - Renewal of Proposal for the second funding period of Priority Programme SPP 1984 (Applicants Tatarenko, Tatiana ;  Willert, Volker )
• Formal modeling of operational flexibility in multi-scale multi-modal energy systems (Applicants de Meer, Hermann ;  Weidlich, Anke )
• Holistic Methodology for the Optimal Planning of Wide-Area Interconnected Hybrid and Multimodal AC-DC Power Systems under Uncertainties (Applicant Myrzik, Johanna M.A. )
• Loop Circle Arc Theory (LoCA) - New Method for comprehensive evaluation of Cross-Sectoral and Cellular Organized Energy Systems - (Applicant Schegner, Peter )
• Mitigation of Emerging Controller Conflicts in Multimodal Smart Energy Systems (Applicant Nieße, Astrid )
• Multi-Objective Black-Start in ICT-reliant Renewable Energy Systems – Power- and ICT-Fault-tolerant Mitigation Strategies (Applicants Lehnhoff, Sebastian ;  de Meer, Hermann )
• Multimodal Distribution Grid Control for the Decentralized Provision of Ancillary Services (Applicants Hohmann, Sören ;  Leibfried, Thomas )
• New techniques for the assessment of harmonic stability in public low voltage networks with very high share of distributed power electronic devices (Applicants Meyer, Jan ;  Myrzik, Johanna M.A. )
• Novel Method for Resiliency Evaluation of Smart Energy Systems (Applicants Lehnhoff, Sebastian ;  Rehtanz, Christian )
• Optimal Operation of Integrated Low-Temperature Birdirectional Heat and Electric Grids - IntElHeat (Applicant Hamacher, Thomas )
• Reliable Operation of Inverter-Dominated ICT-Reliant Energy Systems -- from Centralized Structures to Agent-Based Decentralized Control (Applicants Hofmann, Lutz ;  Lehnhoff, Sebastian ;  Mertens, Axel )
• ResiServD - Service Resilience in Distributed, Multimodal, ICT-based Energy Systems (Applicants Braun, Martin ;  de Meer, Hermann )
• Robust Control Design of Converter-Interfaced Resources in Hybrid Electricity Grids under Consideration of Harmonic Stability (Applicant Liserre, Ph.D., Marco )
• Space-time parallel simulation of multi-modal energy systems (Applicants Benigni, Andrea ;  Bolten, Matthias ;  Speck, Robert )
• Stochastic optimisation for secure dynamic AC-load flow in hybrid multi-modal energy systems under uncertainty (Applicant Schultz, Rüdiger )
• System theoretical analysis of voltage stability in power electronic dominated hybrid power systems (Applicant Rehtanz, Christian )

• Spokesperson: Professor Dr.-Ing. Christian Rehtanz