At Stadtwerke München (Munich’s City Utilities), Germany's largest geothermal plant with six drillings between 2,670 and 3,140 meters deep has been in trial operation since 2021. To ensure high availability, the three drilling pairs, or doublets, are divided among three heat lines. The total plant currently has a thermal output of 50 megawatts. In full operation this plant produces enough heat to supply 80,000 residents in an environmentally friendly way.
The Siemens Energy Team was contracted to implement the Omnivise T3000 control system at the South district heating plant, including all control functions and the integration into the plant’s existing network setup.
A particular challenge here was the integration of the plant into the three existing district heating networks, each with different pressure systems. For this purpose, the team installed a complex district heating network switchover, which is also controlled by the Siemens Energy control system.
To avoid unnecessary high load transients as well as a lot of startups and shutdowns of the sensitive submersible centrifugal pump, the Omnivise T3000 control system uses a strong control for the thermal water system.