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Central SCADA System
The Aktiengesellschaft für Versorgungsunternehmen (AVU) is a regional service provider with headquarters in Gevelsberg and supplies large areas of the Ennepe-Ruhr district in West Germany with energy, gas and water. Water is supplied via a distribution network which is fed by the Rohland and Vomarstein waterworks and whose drinking water production totals 10 million cubic metres per year.
Natural gas is supplied via a pipeline network across a length of 650 km, with an annual output of 3,300 million kWh.
The new central IDS HIGH-LEIT network control system was installed to replace the previous control system based on process computers. It features a modern Client-Server architecture, a redundant design, and is based on MS Windows. Since spring 2005, both waterworks, three spherical gas reservoirs and 140 remote stations with a total of 40,000 process variables are connected to the system and can be remote-controlled. For this purpose, the new network control centre has two dispatcher terminals and one terminal for system management.
Advanced Applications (HEO)
Additionally, both waterworks feature complete station control systems with autarkic operator terminals. The monitoring of pipelines and leak detection is done by the IDS HIGH-LEIT SCADA system.
For gas demand forecast and optimisation, a software module based on artificial neural networks was integrated into the SCADA system, thus enabling not only the creation of operations schedules for the spherical gas reservoirs and “network breathing” of the high-pressure gas ring, but also the consideration of interruptible customers, as well as free and spot quantities for supply optimization.
For further information on AVU Gevelsberg, please refer to www.avu.de.