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Evaluation and Reliability Assessment of Entergy's Construction Plan: July 2008 Presentation

This presentation, delivered during the Entergy Transmission Summit at the Astor Crown Plaza in New Orleans on July 29, 2008, outlines the background, assumptions, and procedures of the base plan and contingency scan of Entergy's transmission models. Key focus areas include near-term (2009/2013) and long-term (2017) planning, sensitivity analyses regarding low hydro conditions, and monitored elements related to N-1 contingencies. The session aims to assess upgrades, confirmed service reservations, and necessary next steps for construction planning within the Entergy footprint.

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Evaluation and Reliability Assessment of Entergy's Construction Plan: July 2008 Presentation

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Presentation Transcript

  1. ICT Construction Plan Evaluation and Reliability Assessment Part 1 Entergy Transmission SummitJuly 29, 2008Astor Crown PlazaNew Orleans, Louisiana

  2. Presentation Overview • Background, Assumptions, Procedures • Base Plan Study Areas • Contingency Scan of Long-Term Models • Near-Term (2009/2013 Models) • Long-Term (2017 Model) • Low Hydro Sensitivity • Areas Showing Up In Real-Time • Next Steps

  3. Assumptions for Construction Plan Contingency Scan • Models • Base Case 2007-Series (Update 2) • Near-term: Summer Peak 2009 and 2013. • Longer-term: Summer Peak 2017. • Model Changes • The latest confirmed transmission service reservations were modeled. • Newly in-service equipment was modeled. • All 2009 Draft Construction Plan Projects were added in the year following the in-service year, including Supplemental upgrades. • 2008 Base Plan upgrades were not included if they were not also in the Draft Construction Plan.

  4. Assumptions for Construction Plan Contingency Scan • Monitored Elements and N-1 Contingencies • All facilities within Entergy footprint including embedded areas and ties to external areas, plus CLECO and LUS at 69 kV and higher. • First-tier areas at 345 kV and higher. • NERC Category A: • Thermal Limits: <100% of Rate A • Voltage Limits: +/- 5% of Nominal • NERC Category B: • Thermal Limits: <100% of Rate A • Voltage Limits: +5% / -8% of Nominal • For elements outside the limits, the analysis was repeated for the breaker-to-breaker contingency. • Elements that were still outside the limits were flagged. • Elements that were within the limits, but for which the Consequential Load >100 MW were flagged. (“100 MW Rule”)

  5. Results for Category A

  6. Map Legend Code for Base Plan and Construction Plan Projects Indicated on Maps BP08-036 = Project Number from 2008 Base Plan CP(2011) = 2008 Construction Plan and Expected In-Service Year DCP(2011) = 2009 Draft Construction Plan and In-Service Year BP08-036 CP(2011) DCP(2011) Project is in both 2009 & 2013 models Project is in 2013 model only Project is not included in either model Background Color Indicates Projects’ Inclusion In Case

  7. Arkansas

  8. BP08-036 CP(2011) DCP(2011)

  9. BP08-002 NA NA BP08-003 CP(?) DCP(?)

  10. NA NA DCP(2010) BP08-012 NA NA BP08-011 NA NA BP08-047 CP(2011) DCP(2011)

  11. (Supplemental) CP(2008) NA BP08-004 NA NA BP08-001 NA DCP(2013) BP08-047A-D CP(2008) DCP(2008) BP08-005 NA NA

  12. BP08-004 NA NA BP08-014 NA NA BP08-005 NA NA BP08-013 NA NA BP08-007 NA NA

  13. (Supplemental) CP(2010) DCP(2010) BP08-027 NA NA

  14. BP08-034 CP(2008) DCP(2008) BP08-035 CP(2009) DCP(2009)

  15. BP08-010 CP(2008) DCP(2008)

  16. BP08-052 CP(2011) DCP(2011)

  17. Mississippi

  18. BP08-058 CP(2009) DCP(2009) BP08-020 NA NA

  19. BP08-061 CP(2012) DCP(2012) NA NA DCP(2009)

  20. BP08-046 CP(2012) DCP(2012) BP08-057 CP(2011) DCP(2011) NA NA DCP(2011)

  21. BP08-057 CP(2011) DCP(2011) BP08-019 NA NA

  22. Louisiana

  23. BP08-052 CP(2011) DCP(2011) BP08-063 CP(2010) DCP(2010)

  24. BP08-030 NA NA

  25. BP08-049 CP(2008) DCP(2008) BP08-050 CP(2010) DCP(2010) BP08-051 CP(2010) DCP(2010)

  26. BP08-055 CP(2008) DCP(2008) BP08-062 CP(2008) DCP(2008)

  27. BP08-054 CP(2009) DCP(2009)

  28. NA NA DCP(2012) BP08-032 CP(2009) DCP(2009) (Supplemental) CP(2009) DCP(2009) BP08-028 NA NA BP08-029 NA NA

  29. NA NA DCP (2010) BP08-048 CP(2010) DCP(2010) BP08-023 NA NA BP08-037 CP(2008) DCP(2008) BP08-031 NA NA

  30. BP08-021 NA NA NA NA DCP (2011) BP08-023 NA NA

  31. Texas

  32. CP(2012) CP(2012) BP08-024 CP(2008) DCP(2008) NA NA DCP(2012) BP08-053 CP(2008) DCP(2008)

  33. NA NA DCP(2010)

  34. BP08-042 CP(2009) DCP(2009)

  35. BP08-043A/B CP(2011/12) DCP(2011/12) BP08-041 CP(2010) DCP(2009/11)

  36. BP08-026 CP(2009) DCP(2009)

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