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Panel#2: A Day in the Life of Planners/Engineers

Steve Lathrop, PacifiCorp. Panel#2: A Day in the Life of Planners/Engineers. 2008 PI T&D Users Group Meeting, Atlanta, Sept 10-12. Agenda. Area Planning at PacifiCorp Infrastructure Planning Load Duration Curves – a New View of Data Non-SCADA Asset Loads SCADA Accuracy. Area Planning.

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Panel#2: A Day in the Life of Planners/Engineers

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  1. Steve Lathrop, PacifiCorp Panel#2: A Day in the Life of Planners/Engineers 2008 PI T&D Users Group Meeting, Atlanta, Sept 10-12

  2. Agenda Area Planning at PacifiCorp Infrastructure Planning Load Duration Curves – a New View of Data Non-SCADA Asset Loads SCADA Accuracy

  3. Area Planning Substation, sub-transmission and non-Main Grid transmission infrastructure Future Infrastructure needs (long-range planning) Daily Operations Issues Asset load analysis Load projections Capital spending Risk-Management data

  4. Area Planning Watch Lists

  5. Area Planning Watch Lists

  6. Area Planning Watch Lists

  7. Load / Voltage Analysis Alphabet soup: Real-time Historical Projected Peak Instantaneous Average Changing ….the differentiator between these is…Time

  8. Infrastructure Planning Area Coincident Loads Six transformers serve this area Can I accurately determine area peak load and growth?

  9. Infrastructure Planning Area Coincident Loads—Load profiles for the six:

  10. Infrastructure Planning Area Coincident Loads—Projected loads

  11. Infrastructure Planning Area Coincident Loads—Add all loads coincidentally

  12. Infrastructure Planning Area Coincident Loads—Projectedgrowth of area load

  13. Infrastructure Planning

  14. Infrastructure Planning

  15. Infrastructure Planning • Load Projections • Multiple Load Duration Tool v1.1

  16. Load Duration Curves Time-Series data converted to time-independent data Simplifies analysis Non-engineers understand it

  17. Load Duration Curves Demonstrate peak loads, duration of peaks and how many hours load limits are exceeded

  18. Load Duration Curves Rearrange data: load-dependent, not time-dependent

  19. Load Duration Curves

  20. Load Duration Curves

  21. Load Duration Curves

  22. Non-SCADA Asset Loads Substation C has no electronic metering. Can I get load profile data for it? My Power Flow suggests 1 MW losses total for line sections 1-4 at peak load CIS SCADA SCADA Source

  23. Non-SCADA Asset Loads Substation C load is approximated by: Sub C = Sub A – Sub B – Sub D – 1 MW ~ CIS SCADA SCADA Source

  24. Non-SCADA Asset Loads Black trace is my ‘pseudo-SCADA’ load profile

  25. Verify SCADA Accuracy Transformer appeared to be overloaded 105% loading 20-MVA loading guideline

  26. Verify SCADA Accuracy

  27. Verify SCADA Accuracy ‘Problem’ surfaced Error ‘Tag’ built Transducer Change-out Error goes to zero

  28. Verify SCADA Accuracy Questions? Steve.Lathrop@PacifiCorp.com

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