Project structure and aims of the work packages
The research project ANGUS II pursues four overarching objectives, to each of which a work package is dedicated. Heat storage, Gas storage and Energy infrastructure draw as cross-cutting themes are covered in all work packages. Details of the project structure and contents are described below.
Figure: Diagram of the ANGUSII project structure with its work packages and cross-cutting themes.
AP 1 | Parameterisation and process understanding
OBJECTIVE:
Describing the part of the geosystem in Schleswig-Holstein which hosts potential for geotechnical energy storage: Expanding the characterisation of processes and parameters for geological layers with low permeability, hydraulic barriers, and and the unsaturated zone.
1.1 | Thermo-mechanical beahviour of permeable and low permeable soils under cyclic thermal loadiing: Experimental investigation and development of material models.
Participation: AG Wuttke
1.2 | Geochemical and microbiological changes in partially saturated and saturated sediments, especially in aquitards, under the variable thermal impact of heat storage applications
Participation: AG Dahmke
1.3 | Geochemcal and microbiological impacts of temperature changes on contaminated groundwater and remediation options as well as particle transport
Participation: AG Dahmke, AG Richnow
1.4 | Study of the reactivity of H₂ and other storage gasses and their impacts on reservoirs and cap rock, impacts of H₂ leakages on shallow aquifers
Participation: AG Dahmke, AG Richnow
1.5 | Test site experiments for the quantification of high-temperature heat storage in the saturated and partially saturated subsurface
Participation: AG Bauer, AG Rabbel, AG Wuttke
1.6 | Detection, characterisation and monitoring of fault zones on the field scale
Participation: AG Sirocko, AG Rabbel, AG Dahmke
AP 2 | Model development
OBJECTIVE:
Enhancement and validation of existing models for the simulation of geootechnical energ storage sites and their impacts,m as well as coupling with models for the simulationof energy supply and individual power plants
2.1 | Development of grid models for the simulation of power- and energy grids in the course of the transition to renewable energies
Participation: AG Hohmeyer
2.2 | Development of component-based power plant models for the integrated description of the operation of compressed air storage power stations and heat supply facilities with geological energy storage
Participation: AG Tuschy
2.3 | Development of interfaces between grid model and powerplant component model for the integrated consideration of geological storage site, power plant, surface infrastructure and power grid as one system
Participation: AG Hohmeyer, AG Tuschy, AG Bauer
2.4 | Model development for the simulation of thermally induced impacts and of large-sclae geotechnical heat storages as wel as impacts of gas storage in porous media
Participation: AG Kolditz, AG Bauer
2.5 | Model development for high-resolution seismic detection of smallscale geological structures as well as fault zones and for the simulation of leakages of brine and gas from deep storage reservoirs along these faults,
Participation: AG Bauer, AG Rabbel
AP 3 | Scenario analyses
OBJECTIVE:
Definition and Analyses of scenarios
a) considering the integration of geotechnical energy storage sites into the the energy supply and of economically feasible scenarios of operation.
b) considering the temporally and spatially resolved demands of space by subsurface energy storage sites, especially in the highly utilised urban subsurface.
c) considering possible impacts on protected entities and the interaction with adjacent storage sites or other types of subsurface use.
3.1 | Scenario analyses of indicative trajectory paths of the energy grid expansionwith shares of renewable energies up to 100% for Schleswig-Holstein, Germany and the european context; integration of geological eenrgy storages into the grid infrastructure and determination of time-dependent, high-frequency load profiles
Participation: AG Hohmeyer, AG Tuschy, AG Bauer
3.2 | Determination and prognosis of the heat demand with spatial and temporal resolution in Schleswig-Holstein and scenario analysis wuiith regard to the fulfilment of demand appliying high shares o renewable energies
Participation: AG Duttmann
3.3 | Hydraulic, thermal, mechanic and geochemical impacts of eenrgy storage by compressed air, hydrogen and methane in deep porous geological layers as well as their cap rock and determination of the spatial dimensions of the storage itself and its impacts
Participation: AG Bauer
3.4 | Spreading of gas leakages and ascending brine from deep storages along fault zones and hydraulic windows
Participation: AG Bauer
3.5 | Impact analysis, determination of the spatial demand and monitoring of shallow geotheraml plants; threat to groundwater by direct impacts as well as by interaction with contaminations, determination of the spatial dimensions of the use and its impact in urban areas
Participation: AG Bauer, AG Kolditz
AP 4 | Spatial planning of the subsurface with energy storage operations and system integration
OBJECTIVE:
Preparation and testing of modelling tools for the integration of geotechnical storage sites into the the energy supply and the definition of economically feasible scenarios of operation. Enhancement of the tools and methods for a large scael subsurface spatial planning scheme developed in ANGUS+
4.1 | Analysis and dimensioning of storage capacities for gas- and heat storages using the simulated scenarios
Participation: AG Bauer
4.2 | Determination of indicative trajectory paths for the grit expansion and transition to renewable energies, considering intensive use of geological storages as well as integration of high-temperature heat storage, compressed-air storage and small geothermal plants with specific concepts of storage usage, respectively; derivation of use scenraios for the subsurface
Participation: AG Hohmeyer, AG Tuschy, AG Bauer
4.3 | Development of management concepts for the use of the shallow subsurface as heat storgae, considering realistic use scenarios and competing demands
Participation: AG Dahmke
4.4 | Development of methods for data integration and visualisation as basis of an information system for subsurface spatial planning
Participation: AG Duttmann, AG Kolditz
4.5 | Update and extenxson of the compendia published in ANGUS+
Participation: all groups