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Cleco Transmission Planning Summit 2011

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  1. Cleco Transmission Planning Summit 2011 Coughlin Transmission Operations Center April 15, 2011 10:00 – 11:00am

  2. Introduction Welcome Terry Whitmore, Mgr- Trans Planning & Operation Support James Simms, Lead Engineer- Transmission Planning Chris Thibodeaux, Sr. Engineer- Transmission Planning Robby Michiels, Sr. Engineer- Transmission Planning

  3. Agenda • Introduction • Economic Planning Studies • Acadiana Load Pocket Project Update • 2011 Transmission Construction Plan • Facility Ratings Changes • Model Review • Stakeholder Business • Final Questions • Adjourn

  4. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  5. Economic Planning Studies None were requested for 2011

  6. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  7. Acadiana Load Pocket ProjectUpdate

  8. Acadiana Load Pocket

  9. Acadiana Load Pocket ProjectYear 2010 Progress Report Flanders – Hopkins 138KV Transmission line tapped for new Segura substation. New Segura 230/138KV Cleco substation Phase I completed 138KV facilities are presently energized 230KV facility commission is scheduled for the end of second quarter 2011 New Segura – Moril 138KV Transmission line completed & connected to Segura 138KV bus

  10. ALP Project Update – Summer 2010 • Cleco- 230KV Segura Substation • Cleco- Segura to Moril 138KV Trans. Line (0.2 mi) Note: Hopkins – Flanders 138KV line is tapped for new Segura substation. Just 138KV bus is energized at this point.

  11. ALP Project Update – Summer 2011

  12. ALP Project Update – Summer 2012

  13. ALP Project Update Questions ?

  14. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  15. Cleco 2011 Transmission Construction Plan

  16. Cleco 2011 Transmission Construction Plan Budgeted Projects • Near term projects deal with Cleco’s obligations to the Acadiana Load Pocket Project and the Reliable operation of the Bulk Electric System.

  17. Cleco 2011 Transmission Construction Plan Budgeted Projects 2012 2011 • Build a new 230KV Transmission line from Wells to the LUS Labbe Substation • Reconductor existing Segura – Hopkins 138KV transmission line • (This will complete Cleco’s participation in the ALP project.) • Second 230/138KV Autotransformer at Cocodrie Substation • Construction of a new Rork 230KV Substation adjacent to the one at Richard • Build a new 230KV Transmission line from Rorkto the Sellers Road Substation • Construction of a new 230KV Sellers Road Substation • Build a new 230KV Transmission line from Sellers Road to the Segura Substation • Construction of a new Mansfield Compressor 230KV Substation tapping Dolet Hills – • Fisher 230KV line • Construction of a new Clarence – Maurice 69KV transmission line • Transmission element replacements on Plaisance – Coughlin 138KV transmission line

  18. 2012 Cleco 2011 Transmission Construction Plan ALP Project Timeline (All participants) 2011 • Cleco- 230KV Sellers Road • Substation • Cleco- 230KV Rork Substation • Cleco- 230KV Rork - Sellers • Road Trans. Line (30.1 mi) • Cleco- 230KV Sellers Road- • Segura Trans. Line (17 mi) • Entergy- 230KV Sellers • Road- Meaux Trans. Line (8.3 mi) • Cleco- 230KV Wells - Labbe • Trans. Line (17 mi) • Entergy- 230KV Sellers Road - • Labbe Trans. Line (14 mi) • LUS- 230KV Labbe - Bonin • Trans. Line (3 mi) • Cleco- Reconductor 138KV Segura- Hopkins Trans. Line • (3 mi) • [Serves to enhance the ALP project objectives]

  19. Cleco 2011 Transmission Construction Plan Long Range Planning- 5 years or greater • System models used in the analysis go out 5 years and beyond • Inputs are extrapolated from short term planning estimates • Accuracy is therefore limited • Results are given leeway in terms of interpretation • Long Term Planning does allow the identification of potential areas of concern • Attention is given to those problems that remain consistent over model runs especially those that get closer to the present • Typically, there is enough time to develop mitigation plans and fund projects • Long Range Planning Analysis has identified some areas of concern • These occur at the end of the planning horizon • At this time, these areas don’t warrant the outlay of capital but will be noted

  20. Cleco 2011 Transmission Construction Plan Regions in purple indicate potential planning criteria violations Bus Under Voltage

  21. Cleco 2011 Construction Plan 2022 Study Cases Bus under voltage Violations Most limiting Contingency: Coughlin – Pine Prairie 138KV Line Most limiting Contingency: Coughlin – Plaisance 138KV Line Pine Prairie 138KV Bus Voltage 0.8907 P.U. Plaisance 138KV Bus Voltage 0.885 P.U. Oakdale 138KV Bus Voltage 0.8979 P.U. Mitigation: Investigate installation of capacitor banks at Pine Prairie. Mitigation: Investigate installation of capacitor banks at Plaisance.

  22. Cleco 2011 Transmission Construction Plan Questions ?

  23. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  24. Rating Changes New NERC standards mandated Cleco to re-evaluate all 100KV and above Transmission Line Ratings including the following elements: • Breakers • Switches • Conductor • Jumpers • Bus • CT Ratios • Wave Traps • Relay Setting Limits

  25. Results of Analysis • Upgrade of multiple lines whose limiting element created base case overloads • Since 2010 • Changed Normal Rating temperature basis from 85° to 93°C • Increased Normal Ratings • Changed Normal and Emergency Rating procedures for jumpers • Increased Normal and Emergency Ratings

  26. 2011 Ratings Summary Comparison of 2010 to 2011 SPP series of models: • Cleco Transmission lines 100KV or greater • 51% had their A rating increase • 8% had their A rating decrease • 13% had their B rating increase • 1% had their B rating decease • Cleco Tie Lines • 11% had their A rating increase • 49% had their A rating decrease • 19% had their B rating increase • 28% had their B rating decrease Refer to the SPP models for specific line ratings

  27. Facility Rating Changes Questions ?

  28. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  29. Model Review • New Substations in Regional models • New 69KV Transmission Line • N-1 ACCC Results

  30. Model Review New Transmission Line and Substations in 2011 Regional models Mansfield Compressor Clarence – Maurice 69KV Line Barker’s Corner Youngsville

  31. Model Review New Substations in Regional models LAGN : (2011) Barkers Corner 230KV Substation (moving load from other subs)

  32. New Substations in Regional models Model Review CLECO : (2011) Mansfield Compressor 230KV Substation (Serving projected area load growth )

  33. Model Review New Substations in Regional models ENTERGY : (2011) Youngsville 138KV Substation (Moves load off of 69KV System)

  34. Model Review New 69KV Transmission Line in Regional models Cleco : (2011) Clarence – Maurice 69KV Line

  35. SPP 2011 Series Model ACCC ResultsUnmitigated Thermal Overloads Champagne – Plaisance 138KV: 120% Contingency: Cocodrie – Ville Platte 230KV Models: Summer/Winter 2013, 2017 & 2022 Limiting element resides outside of the Cleco Control Area Will be monitored in subsequent years

  36. SPP 2011 Series Model ACCC ResultsUnmitigated Long Range Low Bus Voltages Oakdale & Pine Prairie 138KV : 0.89PU Contingency: Coughlin – Pine Prairie 138KV Model: Summer 2022 Long Range Mitigation Plan considers adding capacitor banks at Pine Prairie Plaisance 138KV : 0.885PU Contingency: Coughlin – Plaisance 138KV Model: Summer 2022 Will monitor this voltage in future years

  37. Model Review Questions ?

  38. Agenda Introduction Economic Planning Studies Acadiana Load Pocket Project Update 2011 Transmission Construction Plan Facility Ratings Changes Model Review Stakeholder Business Final Questions Adjourn

  39. Stakeholder Business • Chance for Stakeholders to bring issues up for discussion

  40. Final Questions?