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Leveraging SCADA Technology and Modeling to Promote Greener Operation of Collection Systems

Leveraging SCADA Technology and Modeling to Promote Greener Operation of Collection Systems. Dan Cote P.E. McKim & Creed, Inc. 1365 Hamlet Ave. Clearwater, Fl 33756. AGENDA. ENERGY Understanding your Power Bill SCADA The next generation. Hydraulic Modeling

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Leveraging SCADA Technology and Modeling to Promote Greener Operation of Collection Systems

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  1. Leveraging SCADA Technology and Modeling to Promote Greener Operation of Collection Systems Dan Cote P.E. McKim & Creed, Inc. 1365 Hamlet Ave. Clearwater, Fl 33756

  2. AGENDA • ENERGY • Understanding your Power Bill • SCADA • The next generation. • Hydraulic Modeling • Identify Energy Wasting Conditions • Exploring the Benefits • Examples of avings

  3. Understand Your Power Bill

  4. PEAK CHARGES On-Peak: 6:00 AM-10:00 AM and 6:00 PM -10:00 PM On-Peak: 11.632c/KWH Off-Peak: 6.206c/KWH

  5. 15 minute Demand Changes The HIGHEST 15 minute KW usage of the month! Demand Charge: $4.90 /KW (that’s 42 x on-peak rate)

  6. Pump Station SCADA: Generation #1 Annunciator Lights & Horn High Level Alarm FSK Tone on Leased Phone Lines or Radio Power Failure Alarm

  7. Pump Station SCADA: Generation #2 Stand Alone SCADA PC • Alarms • Equipment Status • Pump Start/hour • Pump RT/hour • Generator Running • Estimated Flow Serial Polling Radio Or Phone Modem Slow Serial Polling (2-minutes)

  8. Pump Station SCADA: Generation #3 OPEN ARCHITECTURE COMMUNICATIONS Open Historian on Enterprise Server • Alarms • Equipment Status • Pump Start/hour • Pump RT/hour • Generator Running • Estimated Flow • Power Analysis • Advanced Diagnostics • Optimization Ethernet Connectivity Improved Protocols DNP3 Asset Management Device WEB pages Hydraulic Modeling KYZ Pulse Analysis Communications Diagnostics Smart Overloads TCP/IP VFD IP Diagnostics CMOM Remote Programming I & I Analysis Energy Optimization

  9. Pump Station SCADA: Generation #3 OPEN ARCHITECTURE COMMUNICATIONS Open Historian on Enterprise Server • Alarms • Equipment Status • Pump Start/hour • Pump RT/hour • Generator Running • Estimated Flow • Power Analysis • Advanced Diagnostics • Optimization Ethernet Connectivity Improved Protocols DNP3 ENERGY USAGE Asset Management Device WEB pages Hydraulic Modeling KYZ Pulse Analysis Communications Diagnostics Smart Overloads TCP/IP VFD IP Diagnostics CMOM Remote Programming I & I Analysis Energy Optimization

  10. Pump Station SCADA: Generation #3 OPEN ARCHITECTURE COMMUNICATIONS Open Historian on Enterprise Server • Alarms • Equipment Status • Pump Start/hour • Pump RT/hour • Generator Running • Estimated Flow • Power Analysis • Advanced Diagnostics • Optimization Ethernet Connectivity Improved Protocols DNP3 Asset Management Device WEB pages Hydraulic Modeling KYZ Pulse Analysis Communications Diagnostics Smart Overloads TCP/IP VFD IP Diagnostics CMOM Remote Programming I & I Analysis Energy Optimization

  11. PROTOCOL: DNP3 • Data Delivered by Priority • Grouped by Classes • Unsolicited Messages • Time-Tagged Data – Buffered at PLC • Receipt Confirmation – no repeats – no lost data • Historical Backfill • Versatile Connectivity • Serial or Ethernet TCP/IP • Wireless/Fiber/Service Provider • Open Architecture • Non Proprietary • www.DNP.ORG

  12. Hydraulic Modeling • Use SCADA to calibrate model. • Model Realistic Power Cost. • Simulate Energy Saving Strategies.

  13. Control of Stations Sharing a Force Main Start Pumps on West Manifold WWTP Color Code and Bar Graphs show HGL

  14. Control of Stations Sharing a Force Main Start Pumps on West Manifold WWTP Color Code and Bar Graphs show HGL

  15. Control of Stations Sharing a Force Main Start Pumps on East Manifold WWTP Color Code and Bar Graphs show HGL

  16. Control of Stations Sharing a Force Main Start Pumps on East Manifold WWTP Color Code and Bar Graphs show HGL

  17. Manifold Graphic-App

  18. 10 Stations Running!

  19. The Cost of Pumping Pump Curve Pump Efficiency

  20. The Cost of Pumping 9 Pumps Together 115 FT TDH Relative Cost of Pumping (same quantities) (Pumping Cost x time) 1 Pump ALONE 48 FT TDH $60.00 $20.00

  21. The Cost of Pumping 9 Pumps Running 8 Pumps Running 7 Pumps Running 6 Pumps Running 5 Pumps Running 4 Pumps Running 3 Pumps Running 2 Pumps Running 1 Pump ALONE $60.00 $20.00

  22. Apply Control Algorithm: If fewer than 4 pumps are running. Find the station with highest wetwell level. If level greater than 75%, start a pump. “HARMLESS TRIGGER”

  23. Calculate Power Cost: $97,254 per month. Total all 24 Stations. Peak rate time periods shown in green. Power Cost:

  24. Calculate Power Cost: $78,804 per month. Savings of 22% Power Cost:

  25. More Examples • Rate of Change Sequencing • Pump Down Before ON-PEAK Begins • KYZ Demand Charge Extrapolation • Does Variable Speed Pumping Save Money?

  26. Does Variable Speed Pumping Save Money?

  27. QUESTIONS? Leveraging SCADA Technology and Modeling to Promote Greener Operation of Collection Systems Dan Cote P.E. McKim & Creed, Inc. 1365 Hamlet Ave. Clearwater, Fl 33756 See this paper at…… WWW.McKimCreed.COM

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