E.ON ERC Microgrid

  E.ON ERC Microgrid Copyright: © Winandy

At the E.ON Energy Research Center, three buildings, a wind turbine and a battery are combined and dynamically operated. The aim of the microgrid is to design the operation in such a way as to react to volatility from renewable energies or to specific network operator requirements. In the process, buildings in the network offer capacity for load peaks. A flexibly controllable battery increases the storage or production capacity of the composite.

The largest integrated building, the main building of the E.ON Energy Research Center, is able to actively shape its energy requirements through its combined heat and power generation. A CHP generates electricity which can either be fed into the grid or used in a heat pump to heat or cool the building. A sorption process is able to convert the cogeneration heat into cooling energy. If a large amount of electricity is required, the boiler can be used to heat the building and the electricity produced by the CHP is available and not used by the heat pump.

The test hall integrated into the network has both a district heating connection and a heating rod, that can store load peaks in the electricity network as heat in existing hot water storage. The air-conditioning system of the test hall can also be operated with speed controlled fans and humidification power in accordance with the load situation in the network.

The network is completed by a passive office building, a battery and a wind energy converter. The office building does not provide active capacity for load regulation, but it represents typical parts of the building stock in Germany. The wind energy converter generates electricity according to the instantaneous wind speed and thus represents the real feeds from renewable energies into a district network. The battery can be operated flexibly. This demonstrates the benefits of batteries in a building microgrid.

The interconnection of the buildings with the battery and the wind turbine is promoted by the European Union through the H2020 project "ELSA". For more information, please visit the following website or the following link. The research work is done in cooperation between ACS and EBC.

Contact: Building Automation