The DFG Priority Programme 1984
(German: “Schwerpunktprogramm”, SPP)

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.

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