eCharging infrastructure and LV connection for das Stadtwerk Regensburg.Mobilität GmbH

Bus depot to be equipped with charging and power distribution technology

Transportation

das Stadtwerk Regensburg.Mobilität GmbH

Regensburg Germany

Completion: 2021

Bus Depot Regensburg

Regensburg,

Germany

das Stadtwerk Regensburg.Mobilität GmbH wants to advance sustainable local public transport in Germany and therefore equips the bus depot with further electromobility.

Siemens supplied the charging infrastructure as well as the power distribution technology. Operations were scheduled to start in 2021. Electric buses were first introduced in the city center of Regensburg in 2017.
The SICHARGE UC 200 charging stations supply 22 new electric buses at 23 parking spaces with a charging power of 150 kW each. Charging takes place either overnight or during other breaks in operations using charging cables and connectors. 16 of the 23 parking spaces have a special cable reel that automatically rewinds after charging is complete, leaving the drive-through lanes open. The vehicles are powered with locally and renewably generated green electricity from REWAG, the energy provider in the Regensburg group of companies.

To connect the depot to the public power grid and to distribute electricity in the building, Siemens has also installed transformers and a SIVACON S8 low-voltage switchboard.
The individual charging stations in the depot are supplied with power via a SIVACON 8PS busbar trunking system.

This project demonstrates yet again the importance of integrating new charging infrastructure into existing structures. Many cities are investing in sustainable bus transport, but the retrofit has to be as economical as possible. For this reason, converting existing bus depots to eBus operations must be easy and cost-efficient.

Birgit Dargel, Head of Future Grids at Siemens Smart Infrastructure

What makes this form of power distribution unique are the special connectors that easily adapt the busbar trunking system to the special characteristics of the existing building. This solution is more flexible than cables, easier and faster to install. Additional loads can be added via tap-off units as needed. When planning the power distribution system, a digital twin of the busbar trunking system is created by using digital planning tools. A future modular expansion of the system can thereby be simulated and included in the planning process already today. This enables forward-looking and economic planning as well as efficient implementation.

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