Structure of the research cluster

All work is based on the technical requirements for a stable operation of the interconnected grid. In the topic "Grids" the requirements for producers and consumers are defined (work package 12 "Grid stability and security of supply") and it is investigated how the grid in Mecklenburg-Western Pomerania is to be expanded (work package 11 "Grid expansion in Mecklenburg-Western Pomerania"). The competence in this area is provided by the Chair of Electrical Energy Supply (Prof. Weber) at the University of Rostock. This is the basis for the engineering working groups. These will work closely together with the working group "Grids" to discuss grid requirements and potentials from a component perspective.

The working group "Wind energy plants" examines stability aspects for the most important renewable energy producer in Mecklenburg-Western Pomerania. How wind turbines can provide ancillary services and what effects this has on the design of wind turbines is investigated in work package 2 "Effects on wind turbines through grid-stabilising operation" at the Chair of Wind Energy Technology at the University of Rostock (Prof. Ritschel). Stability problems of inverter controls in grids dominated by power electronics are discussed from control theory as well as from real power electronic applications. This is done in work package 3 "Stability verification for inverters on weak grids" at the Institute for Automation Technology at the University of Rostock (Prof. Jeinsch) and in work package 4 "Grid-stabilizing inverter control for wind turbines" discusses at the Chair of Power Electronics and Electric Drives at the University of Rostock (Prof. Eckel).

In the working group "Bioenergy Plants and Storage", the focus is on balancing the fluctuating wind and PV power output. The concrete feasibility of storages in Mecklenburg-Western Pomerania, the selection of appropriate technologies, possible energy content and capacity are investigated in work package 5 "Storage Study Mecklenburg-Western Pomerania" at the Institute for Regenerative Energy System of the Stralsund University of Applied Sciences (Prof. Luschtinetz). How these storages can contribute to ancillary services is also worked out at the Stralsund University of Applied Sciences (Prof. Bierhoff) in work package 8 "Intelligent Storages". A close link to work packages 3 and 4 on inverter stability will be established. In the work packages 6 "Ancillary services by thermal plants" at the Chair of Technical Thermodynamics at the University of Rostock (Prof. Hassel) and 7 "Ancillary services by biomass plants" at the Chair of Waste and Resource Management at the University of Rostock (Prof. Nelles) research is being carried out on how the fluctuating feed-in of regenerative generators can be compensated by thermal plants and biomass.

The working group "Loads" develops methods for the highly dynamic participation of loads in the stabilisation of the grid. The focus is on decentralised procedures that take the necessary information from the grid frequency without additional communication channels. This is carried out in work package 9 "Grid stabilisation by electronic consumers" at the Institute for Applied Microelectronics and Data Technology at the University of Rostock (Prof. Timmermann). Work package 10 "Grid stabilisation by pump and fan systems" in investigated at the Chair of Fluid Mechanics at the University of Rostock (Prof. Wurm) with the participation of the Chair of Power Electronics and Electric Drives (Prof. Eckel).

The practical implementation of technically necessary procedures depends on the economic, legal and institutional framework conditions. These are dealt with across all working groups in work package 1 "Economic, legal and institutional framework" at University of Greifswald as well as the Institute for Climate Protection, Energy and Mobility (IKEM) (Prof. Rodi) with the participation of Prof. Beckers (IKEM). Identification and analysis of the legal difficulties for an optimal sector coupling are carried out with a focus on Mecklenburg-Western Pomerania within work package 16 "Legal framework for an optimal sector coupling" in close cooperation with the working group "sector coupling".

Also, this project aims to seise the opportunity to work together with the Chair of Systematic Theology and Philosophy of Religion at the University of Rostock (Prof. Linde) to discuss theological and ethical issues in interaction with those of engineering, law and economics (work package 13).

The possibilities of optimising the interconnection of the electrical energy supply with the heating and fuel/material sectors are investigated by the Chair of Waste and Resource Management (Prof. Nelles) in work package 14 "Optimisation of Sector Coupling". A simplified energy flow model for the coupling of the sectors electricity, heat and fuels is to be developed in work package 15 "Coupled energy flow model with optimiser" at the Chair of Technical Thermodynamics at the University of Rostock (Prof. Hassel). The system aims to show different operating strategies of the overall system as well as the expansion possibilities through storages and coupling technologies. This requires close cooperation with the working groups "Bioenergy plants and storages" as well as "Grids", and in some cases "Framework Conditions and Incentive Systems".