Increasing shares of renewable energies from partially volatile energy sources require more local storage. Such additional storage is needed to keep the energy network stable in the case of both varying generation and demand. Battery electric vehicles (BEVs) can provide this storage function in the future. However, this can only be realised by connecting batteries and the power grid in a continuous active chain, organising data flows quickly and efficiently and creating joint business models along the active chain and across all actors involved. The InterBDL research project (funded by the Federal Ministry for Economic Affairs and Climate Action) links actors along this chain. It brings together charging infrastructure and automotive industries, ICT service providers, energy suppliers, grid operators, energy meteorology experts, and BEV vehicle users. It evaluates how to integrate the storage potential of BEV vehicles bidirectionally into the energy system.
Research project InterBDL
Duration
July 2023 to December 2026
Funded by
Federal Ministry for Economic Affairs and Climate Action
Project participants
Ulm University of Applied Sciences
Institute of Networked Energy Systems
Institute for Transport Research
be.storaged GmbH
EEBus Initiative e.V.
Intelligent Energy System Services GmbH (IE2S)
Pionix GmbH
Stadtwerke Ulm/Neu-Ulm Netze GmbH
Stadtwerke Ulm/Neu-Ulm Energie GmbH
Streamergy GmbH
From a technical perspective, bidirectional charging creates a non-conduction-bound energy flow in a virtual power plant with stationary and mobile resources. In order to establish this process in the energy system, new business models are needed. Overall, an innovative electricity grid modelling is required, which forms the basis of a potential congestion management and an adapted electricity trading. Subsequently, a dedicated expansion planning of the electricity grid infrastructure is expected, which is also subject to new requirements due to climate change and additional electricity end consumers as e.g. heat pumps.
In the InterBDL project, the Institute of Networked Energy Systems is working on information from climate models on the expected changes in the meteorological framework conditions for grid expansion. In addition, we use improved short-term forecasts of renewable energy generation to improve electricity trading in a system with bidirectional charging options. We derive the data for these forecasts essentially from satellite observations, which complement today's day-ahead and intraday forecasts.
The Institute for Transport Research, which is also based at DLR, is responsible for forecasting future charging requirements and the transport of energy in vehicles within the project. For this purpose, the city of Ulm/Neu-Ulm is mapped within the agent-based transport demand model TAPAS in order to be able to predict passenger movements. The development of the vehicle fleet is modeled and the resulting charging requirements and possibilities for feeding back into the energy grid are determined. For the expected electrification of commercial transport, the demand for charging power is evaluated on the basis of traffic and economic structural data. In this project, DLR's energy and transport research are thus jointly contributing to the testing and improvement of the complex chain of bidirectional charging
Departments, research groups and challenges related to the InterBDL project:
