Network control technology with FlowChief in the canton Schwyz

Project: EBS Schwyz
Customer: Elektrizitätswerk des Bezirks Schwyz AG
Jürg Heinzer,
System Integrator: ERTECH Elektronik AG
Michael Bickel,
Product: Process control system
Sector: Energy & Energynetwork


The power station in the district of Schwyz (EBS) is a leader in the energy supply. EBS produces and transmits energy and also offers its customers services. The company arranges the environment a high priority, account economic, ecological and social aspects. A key task of the EES is to convert the hydropower the Muota into usable electricity and to provide customers in the supply area safe disposal. This EBS operates five hydropower plants along the Muota - the Muotakraftwerke. These were built 1956-1970 and annually produce around 220 million kilowatt hours of electricity. Thus, they cover about 70% of electricity needs in their own supply area.

Since 2011 EBS monitors the network infrastructure to producers and customers with process control of FlowChief. Planning and implementation was carried out by the Ertech Electronics AG Studen - General Distributor and system integrator for FlowChief software in Switzerland. "There was no central monitoring for the network system. Only small controllers and panels were installed on site for operation and fault signaling. EBS was particularly impressed the concept of centralization. The underlying server client architecture simplifies operation and the evaluation and processing of data considerably ", says project manager Michael Bickel of Ertech.

The connection of external control systems, protection devices or transformer monitoring is carried out via IEC 60870 and telecontrol components from SAE IT-systems. The telecontrol perfectly mastered the interplay of transmission media like GSM, dial-up connections (each 60870-5-101) and pure TCP / IP routes as fiber-optic technology (60870-5-104).

FlowChief visualized, monitors and manages network components such as circuit breakers, protective devices or transformer monitoring the power levels 6,3kV, 15kV and 50kV. In addition, data will be analyzed from the power plant control systems.

Critical operating conditions or disorders of the components are automatically forwarded to the Pickett service via voice call.

Meanwhile, in addition to the transformer stations, already 6 substations recorded. "This was initially not provided by EBS" said Mr. Bickel.

For Ertech the Electricity Schwyz were the first project in this complex perimeter with the software of FlowChief. Meanwhile, some more have been implemented with a similar range of tasks.

Facts FlowChief:

  • Process control 15 000 process variables (On Premise)
  • SAE connection telecontrol via IEC 60870-5-104 (Ethernet, fiber optic) and IEC 60870-5-101 (dial-up, GSM)
  • Visualization and monitoring of different nets, substations and circuit breakers
  • Discontinuation of switching commands
  • Alerting via language (Landline)
  • Leitvorgangsarchivierung - detailed record of relevant user interactions
  • Long-term archiving of messages (states) and measured values

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