- Beginning of testing in everyday life
- Expansion of electromobility as a contribution to security of supply
- Bidirectional Loading supports the energy transition
- Regulatory framework conditions and smart meters
BMW has passed the first vehicles for the Phase “Customer Pilot Operation” phase of a V2G project at the beginning of July. 20 BMW I3 with the new technology on board are now in customer hand, 30 other vehicles will be handed over to commercial users in the coming weeks.
In May 2019, Verbund research project “Bidirectional Chargem Management – BDL” developed companies and institutions from the areas of automotive industry, charging infrastructure, energy industry and science together technological solutions that can become more comfortable, cost-effective and emissions harder for users ‘electromobility for users’ users.
The aim is to combine vehicles, charging infrastructure and electricity grids with a holistic approach so that renewal generated energy promoted and at the same time increases supply security. The research project under the sponsorship of the German Center for Aerospace (DLR) is funded by the Federal Ministry of Economics and Energy and is invested on three years.
Beginning of testing in everyday life
The ability to bidirectional charging allows electric cars to provide not only electrical energy when connecting to a charged charging station or wallbox, but also in the opposite direction in the power grid of the distribution system operator to feed back. The batteries of the E cars become mobile energy stores, which can also deliver electricity if required. Such an integration of as many electric vehicles as possible in the power grid requires a variety of innovations in the fields of vehicle technology, charging hardware, charging management and communication interfaces to the energy stakeholders as well as with regard to legal framework conditions.
These arise within the framework of the research project, in addition to the Consortium Guide BMW Group, the Kostal Industrie Elektrik GmbH (Development Ladishardware), KEO GmbH (software supplier for connection customer systems to the energy supplier), the transmission system operator Tennet, the distribution system operator Bayernwerk Netz GmbH (both: energy system Services), the research center for energy industry E.V. and the research society for energy industry mbH (both: FFE, research on energy system and network releases & measurement data evaluation), the Karlsruhe Institute of Technology (Kit; Research on Electricity Market and Grid Reliefs) and the University of Passau (User Research).
The pilot custody and customers now benefit from this new technology package. It consists essentially of the technology in the vehicle and backend, the intelligent wallbox and the networking of e-car, wallbox and electrical installation of the customer building with the power grid. The first function, which is experienced for the clients, will be the optimization of self-consumption from the power generation of the own photovoltaic system, which will be accompanied by a noticeable reduction in electricity costs.
In the second stage, “Vehicle to Grid” (V2G) features that customers can participate in new business models for energy trading and electricity grid stabilization. In a third stage, companies with electric vehicle fleets are added. These will use the vehicles as a short-time storage to avoid occurring power requirements in the daily load path. First B2B corporate clients also belong to the test users of the pilot phase. Together with the alphabet Fuhrparkmanagement GmbH, a wholly owned subsidiary of the BMW Group, these could be obtained for the project.
The technical challenge in the design of this package was primarily to tailor the interaction between the individual components with existing and future communication standards so that a consistent overall function could be produced.
Expansion of electromobility as a contribution to security of supply
With the continuously growing stock of electric cars on German roads, the demand for electricity increases in the long term, while the need is growing intelligent to control the energy flows. Only in this way can electricity from renewable sources can be optimally used.
In response to this challenge, the BMW Group has developed a solution in cooperation with the network operator Tennet in Germany in a pre-directed project, with the charging strategy of e-cars in addition to the mobility plans of customers and the availability of green electricity and the utilization of the Power grid is taken into account. Bayernwerk and KEO provide the necessary intelligence for networking on site. D.H. Specifically, attached vehicles can interrupt the charging process and continue at a later date on appropriate signals of the distribution or transmission system operator. With the now explored technology of bidirectional shop, ie the backpeability can be achieved for this even greater effects. Parked E cars connected to a charging station or wallbox can be used as flexible and mobile power stores.
Bidirectional Loading supports the energy transition
In addition to a strengthened security of supply, the intelligently controlled integration of E-cars into the electricity grid can also further increase the proportion of regenerative energy generated in total consumption in Germany. By using the storage capacities provided in the batteries of electrified vehicles, supply and demand in the field of green electricity can be tuned better.
Thus, for example, the memory on four wheels can be targeted to generation tips of wind power and solar systems and return the EE electricity in times with low renewable energy (EE) generation (night, lumen) to the EE electricity while preserving the driving demand of the customers and customers. Thus, the startup of fossil power plants and their CO2 emissions can be reduced in such time windows. In this way, electromobility becomes more than ever to an integral part of the energy transition. Its expansion reduces CO2 emissions both in the field of mobility and in the field of electricity generation.
The holistic approach pursued in the BDL project refers to BMW as currently unique, as all relevant elements and control levers for later regular operation in the project are reconciled and reconciled: the interaction of the charging hardware in the vehicle and at the charging point, the associated digital services as well The role of networks at all levels.
Regulatory framework conditions and smart meters
In addition, legal and regulatory framework conditions are evaluated in pilot operation. For the use of the bidirectional charging manager at home (“Vehicle to Home” – V2H), the project partners were able to show a first position paper: “V2H” is already possible in today’s German legal framework. Analyzes of network and market-oriented uses in the current legal framework are currently in progress.
In order to test the monetary and ecological customer benefit as well as the ease of use of the bidirectional applications shown, the University of Passau (user research), the partner research center for energy industry E.V. (FFE) and the research society for energy industry mbH (both: energy system analysis), as well as the Karlsruhe Institute of Technology (Kit; Research on Electricity Market and Grid Reliefs).
A special component brings the FFE through the “FFE composite project“. In this, a whole range of stakeholders from the energy industry and industry are involved in the research project: Bayernwerk AG, IAV GmbH, Illwerke VKW AG, E.On Group Innovation GmbH, Lew Transfernetz GmbH, Rhenag Rheinische Energie AG, Stadtwerke Munchen GmbH, Solarwatt GmbH, transnetBW GmbH, Uniper SE, Viessmann Werke GmbH & Co. Kg. This enables an exchange of experience, the acceleration of standardization work and the development of solutions that are accepted in width.
This is the basis for a later standard and thus nationwide use of technology to integrate electromobility into the German electricity network. For the BMW Group, according to its own statement, it is clear that the holistic approach and the consistent customer orientation are the success factors for the individual mobility of the future.
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