Siemens Smart Infrastructure has received an order from the Regensburg transport authority in Germany to equip the bus depot in Markomannenstrasse for electromobility.
Siemens will supply the charging infrastructure as well as the power distribution technology.
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Operations are scheduled to start in 2021. Electric buses were first introduced in the city centre of Regensburg in 2017.
“In order to continue to make transport in Regensburg more environmentally friendly and climate-neutral, we want to further advance the electrification of local public transport,” said Das Stadtwerk Regensburg MD, Manfred Koller.
“It is important for us to integrate new charging infrastructure into the existing bus depot easily and economically. In addition, we need to be able to add more charging options in future.
“We decided to go with Siemens because of their easy-to-expand charging infrastructure as well as their busbar trunking system for power distribution as an alternative to complex wiring.”
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By GlobalDataThe Sicharge UC 200 charging stations will supply 22 new electric buses at 23 parking spaces with a charging power of 150 kW each. Charging will take place either overnight or during other breaks in operations using charging cables and connectors.
Some 16 of the 23 parking spaces will have a special cable reel, which automatically rewinds after charging is complete, leaving the drive-through lanes open. The vehicles will be powered with locally and renewably-generated green electricity from REWAG, the energy provider in the Regensburg group of companies.
“This project demonstrates yet again the importance of integrating new charging infrastructure into existing structures,” added head of Future Grids at Siemens Smart Infrastructure, Birgit Dargel.
“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.”
To connect the depot to the public power grid and to distribute electricity in the building, Siemens is also installing transformers and a Sivacon S8 low-voltage switchboard. Individual charging stations in the depot will then by supplied with power via a Sivacon 8PS busbar trunking system.
Siemens maintains what makes this form of power distribution unique are the special connectors that 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.
