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PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 1 Online simulation of gas distribution networks Peter Aymanns, Stadtwerke Dsseldorf Netz GmbH, Dsseldorf Andreas Stolte, Dirk Wilms, Wolfgang Drner, PSI AG, Aschaffenburg 9 th SIMONE Congress, October 15-17, 2008, Dubrownik, Croatia Slide 2 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 2 Contents Introduction Network control at Dsseldorf Cityworks Why online network calculations? System integration Example scenarios Summary Slide 3 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 3 Network control at Dsseldorf Cityworks Drinking water network 7 pressure zones 1,740 km total length, 73,700 buildings connected 55,369,000 m/year sales, 212,760 m/day max. District heating network 3 network sections 183 km total length, 4,950 delivery stations 1.6 GWh sales Slide 4 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 4 Network control at Dsseldorf Cityworks Electrical power network High, medium and low voltage 9418 km system length, approx. 83,500 buildings connected 4.4 TWh/year sendout; 750 MW peak load Street lightning About 62,000 electric and 17,000 gas lights Slide 5 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 5 Network control at Dsseldorf Cityworks Gas network High-pressure: 20 bar, 4 bar, medium-pressure 900 mbar, low-pressure 42 mbar 1,456 km total length, approx. 54,100 buildings connected, 121,000 meters 7.0 TWh/year sendout (domestic and commercial), 39.4 GWh/d max. day 4.0 5.0 TWh/year power plant gas 9 transfer stations, about 270 gas metering and pressure regulating stations Gas family: Enriched low-BTU gas Pressure regulation, no variation of linepack or storage Slide 6 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 6 Network control at Dsseldorf Cityworks Combined control center From 2000 merger of the control rooms 2004 to 2005, control centre staff from different sectors were trained together (Simone was used as a training simulator) Since 2006 staff of the various sectors work interactively Slide 7 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 7 Combined energies control room of Stadtwerke Dsseldorf Slide 8 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 8 Why online network calculations? Decision-making tool in the evaluation of complex network operations Planned or unplanned closing of network sections Planned or unplanned closing or partial closing of gas metering and pressure regulating stations Pressure adjustment in the networks Monitoring of load flow Slide 9 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 9 Why online network calculations? Aims in operational management Review of the supply situation for proposed closures Establish the control variables for controlling Evaluate the impacts of changes in the network switching status Provide information about abnormal conditions in current operations Slide 10 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 10 Why online network calculations? Why integrated calculation Uniformity for all devisions Reduction of various software applications No interfaces to transfer the dynamic operational data No double data maintenance work Intuitive handling of the calculation within uniform user interface Simple integration of calculation results into operational decisions Available and applicable at all times Slide 11 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 11 System integration Slide 12 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 12 Any Data is put in only once Data import from third-party systems Integrated total system, i.e. Highly efficient, faultless data engineering Extreme dynamics Consistent operation and visualization System integration Complete integration Static Data-Models for SCADA, Simulation, Optimization, etc. Shared real-time Database Integrative static Data-Model SCADA-Functions Simulation Optimization etc. Geografic plans Schematic plans Station figures Trend charts Specific figures Lists generator Import from GIS, SAP IS-U MMI OperatingProcess Data Slide 13 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 13 Any Data is put in only once Data import from third-party systems Integrated total system, i.e. Highly efficient, faultless data engineering Extreme dynamics Consistent operation and visualization System integration Complete integration Static Data-Models for SCADA, Simulation, Optimization, etc. Shared real-time Database Integrative static Data-Model SCADA-Functions Simulation Optimization etc. Geografic plans Schematic plans Station figures Trend charts Specific figures Lists generator Import from GIS, SAP IS-U MMI OperatingProcess Data Slide 14 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 14 Any Data is put in only once Data import from third-party systems Integrated total system, i.e. Highly efficient, faultless data engineering Extreme dynamics Consistent operation and visualization System integration Complete integration Static Data-Models for SCADA, Simulation, Optimization, etc. Shared real-time Database Integrative static Data-Model SCADA-Functions Simulation Optimization etc. Geografic plans Schematic plans Station figures Trend charts Specific figures Lists generator Import from GIS, SAP IS-U MMI OperatingProcess Data Slide 15 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 15 Any Data is put in only once Data import from third-party systems Integrated total system, i.e. Highly efficient, faultless data engineering Extreme dynamics Consistent operation and visualization System integration Complete integration Static Data-Models for SCADA, Simulation, Optimization, etc. Shared real-time Database Integrative static Data-Model SCADA-Functions Simulation Optimization etc. Geografic plans Schematic plans Station figures Trend charts Specific figures Lists generator Import from GIS, SAP IS-U MMI OperatingProcess Data Slide 16 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 16 Any Data is put in only once Data import from third-party systems Integrated total system, i.e. Highly efficient, faultless data engineering Extreme dynamics Consistent operation and visualization System integration Complete integration Static Data-Models for SCADA, Simulation, Optimization, etc. Shared real-time Database Integrative static Data-Model SCADA-Functions Simulation Optimization etc. Geografic plans Schematic plans Station figures Trend charts Specific figures Lists generator Import from GIS, SAP IS-U MMI OperatingProcess Data Slide 17 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 17 System integration Common data handling All data stored in control system database - topology - technical data - figures Import of GIS data - cyclic incremental into control system database - objects keep their identity - pipes and network equipment - generation of geographic oriented figures Import of consumption data - cyclic incremental into control system database - annual consumptions from billing system Slide 18 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 18 System integration Applications State estimation - adaption of the load model - calibration tool - determines current flow conditions in the network - information on locations without measurement is available Slide 19 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 19 System integration Applications State estimation - adaption of the load model - calibration tool - determines current flow conditions in the network - information on locations without measurement is available Look ahead simulation - check network behaviour before a operation is carried out - determines network status for future load and switching szenarios - load forecasts and nominations are considered - improvement of operation mode Slide 20 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 20 System integration Visualisation Indication - display of measured and/or calculated values - indication of discrepancies - indication of alarms Coloured network diagrams - flow - pressure - velocity - lots of others (diameter, subnet, age...) Flow arrows Bubble help for object informations Curves Slide 21 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 21 Example scenarios Checking the supply status before taking the GDR station C78 out of service. Slide 22 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 22 Initial flow status Example scenario: station C78 taken out of service Slide 23 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 23 Flows - C78 out of service Example scenario: station C78 taken out of service reverse flow zero flow to C78 Slide 24 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 24 Pressures - C78 out of service Example scenario: station C78 taken out of service Slide 25 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 25 Initial pressures Example scenario: station C78 taken out of service Slide 26 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 26 Lp pressures - C78 out of service Example scenario: station C78 taken out of service Slide 27 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 27 Example scenarios Determining the effects of closing hp valve SBN 778 SBN 778 Slide 28 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 28 Initial flow status Example scenario: closing hp valve SBN 778 SBN 778 B 6 B 8 B 7 Slide 29 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 29 Flows - SBN 778 closed Example scenario: closing hp valve SBN 778 SBN 778 B 6 B 8 B 7 Slide 30 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 30 Initial Feeding Example scenario: closing hp valve SBN 778 Feeding - SBN 778 closed Slide 31 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 31 Velocities - SBN 778 closed Example scenario: closing hp valve SBN 778 SBN 778 Increased velocity B 6 B 7 Slide 32 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 32 24/7 Netze GmbH, Mannheim - quasi steady state district heating calculations - instationary / transient gas network calculations Stadtwerke Dsseldorf Netz GmbH, Dsseldorf - steady state gas network calculations - quasi steady state drinking water network calculations - quasi steady state district heating calculations Stadtwerke Duisburg Netzgesellschaft mbH, Duisburg - steady state gas network calculations - steady state drinking water network calculations NRM Netzdienste Rhein-Main GmbH, Frankfurt - instationary / transient gas network calculations HEAG Sdhessische Energie AG, Darmstadt - steady state gas network calculations SWM Infrastruktur GmbH, Mnchen - instationary / transient gas network calculations E.ON Avacon Netz GmbH, Braunschweig - instationary / transient gas network calculations Stadtwerke Aachen AG, Aachen - steady state gas network calculations - steady state drinking water network calculations - quasi steady state district heating calculations References Slide 33 PSI AG, Stadtwerke Dsseldorf GmbH 2008 SimoneCongress 2008, sheet 33 Assists operators of distribution networks State estimation calculates actual flow situation Look ahead simulation to test operations in advance Modular software design Different computing cores available Uniform data model Use of GIS data and consumption data Uniform user interface Easy to use simulation functions Powerful visualisation Summary Integrated online network calculations