BHS also meets modern standards in energy generation. In 2016, for example, it commissioned a new combined heat and power (CHP) plant with buffer storage and an exhaust gas heat exchanger at its Schönwald site. “We use it to produce 70 percent of our electricity and 70 to 80 percent of our heat ourselves,” says Energy Manager Thomas Tröger of BHS.
“Therefore, as part of the energy modernization project, the heat distribution systems were partially updated. The central control system is now based on individual stations and operating levels that function autonomously, as well as an alarm server with SMS alarms integrated into the control system. This helps increase operational reliability. In addition, the central control system regulates the flow temperature, controls all the pumps and supplies all the areas with heat.
For the energy management system, various measured values such as pulse, M-Bus and Modbus IP are recorded and passed on to the monitoring system via OPC for evaluation. Based on these values, the controller calculates the information required for optimal operation of the CHP system and uses this information for control via Modbus IP.