Flexible generation and regional power plant
In this workstream, WindNODE shows how producers, storage units and electricity and heating grids in the same geographical region can be interconnected to regionalise load flows and achieve flexible feed-in to support the grid. First, the different power plants are coordinated and controlled within a regional network and as such support the grid and system. For the integrated flexibility, regional ancillary services thus become the profit model.
In this project, Belelectric demonstrates the use of large-scale batteries and expands the range of application for such storage units. In doing so, we enable a sustainable increase of such installations in the middle term without subsidies. Advanced battery-specific operating models should be tested as well as the connection between battery and renewable energy generation and the resulting business models. We are specifically working on the site development and planning for the integration of the large-scale battery, its prequalification and use in the operating reserve pool, the quantification of new operating reserve services in connection with photovoltaic installations and wind turbines, as well as on the evaluation of battery-supported services within the distribution system and the testing of balancing group management by means of batteries.
In the Uckermark district, ENERTRAG collaborates with Fraunhofer IEE and RLI to prove that a regional power plant can guarantee full power plant operation, including ancillary services, while maintaining the highest IT security standard. In this scope, we recommend actions for the secure operation of regional power plants in accordance with the new IT Security Act. As part of a joint venture outside WindNODE, we are adding a 20 MW / 20 MWh battery to the regional power plant to map the entire range of flexibilities and to ensure fully-fledged power plant operation. In addition, the regional power plant houses a 10 MW Power-to-Heat installation including heat storage as controllable load. In the process, we are researching how the approach can support the system and grid, what impact prosumer households have on the regional power plant and what business models are possible for operation.
Seefried, Müller, Förster (2019): "Regional Analysis of Potentials of Flexibility Options in the Electricity System for the Study Regions Prignitz in Brandenburg and Anhalt-Bitterfeld-Wittenberg in Saxony-Anhalt". In: Journal of Sustainable Development of Energy, Water and Environment Systems, 2019.
In Frankfurt (Oder) and in Słubice in Poland, the Frankfurt (Oder) public utility company is bundling several production sites, storage units, the heat distribution grids as well as the supply and procurement contracts on the control side. To this end, we use a software under development as a modular management system. This offers the possibility to directly control the generating units to optimise the heat supply. Additionally, it allows controllable loads to be provided by CHP installations in Frankfurt (Oder) during electricity generation. As a result of the higher flexibility of the generating units and heat grids, the project achieves a reduction in fuel requirements and overall costs while maintaining the high security of supply. At the same time, we lay the groundwork to introduce electricity generated in the surrounding area by wind turbines and PV installations into the grid area for consumption.
In Cottbus, IBAR is realising the coupling of the power and heating sectors, including generation, storage and distribution, together with BTU Cottbus-Senftenberg (KWT) and the Cottbus cogeneration plant. The demonstration of this collaboration with the aid of the KEMS municipal energy management system enables us to test new business models for energy marketing with a wide range of technologies. Special attention is paid to the smart integration of economically feasible storage technologies based on heat and electricity, as well as the use of Power-to-Heat technologies in the heating grid, taking into account the generation side. One result of the project is a transferable technology and decision matrix for the model location. Moreover, the advanced KEMS will enable the detailed visualisation of the individual grid participants as well as a grid representation of the different energy sectors.