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2009 SERTP Economic Studies

2009 SERTP Economic Studies. 2009 SERTP. Economic Planning Studies. 2009 SERTP. Five Economic Planning Studies North Georgia to FRCC 650 MW SCE&G to Georgia 1000 MW Gulfport, MS to Georgia 1000 MW Washington County, GA to Georgia 5000 MW

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2009 SERTP Economic Studies

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  1. 2009 SERTP Economic Studies

  2. 2009 SERTP Economic Planning Studies

  3. 2009 SERTP Five Economic Planning Studies • North Georgia to FRCC • 650 MW • SCE&G to Georgia • 1000 MW • Gulfport, MS to Georgia • 1000 MW • Washington County, GA to Georgia • 5000 MW • Savannah, GA to Southern Balancing Authority • 400 MW Summer Peak • 1000 MW Off Peak

  4. 2009 SERTP Power Flow Cases Utilized • Study year: 2014 • Load Flow Cases: • 2009 Series Version 2A • Summer Peak with 2250 MW Interchange to FRCC, 3600 MW to FRCC, and Shoulder

  5. 2009 SERTP Five Economic Planning Studies • Final Report Components: • Thermal Analysis • DC contingency analysis to attain monitored/contingency pairs with Siemens PSS MUST • AC verified with Siemens PTI PSS/E • Interface Transfer Capability Impacts • Stability Impacts • Potential Solutions • Transmission Projects and Cost Estimates

  6. 2009 SERTP • The following information does not represent a commitment to proceed with the recommended enhancements nor implies that the recommended enhancements could be implemented by the study date of 2014. • These potential solutions only address constraints identified within the Southern Balancing Area that are associated with the proposed transfers. Other Balancing Areas were not monitored which could result in additional limitations and required system enhancements.

  7. North Georgia to FRCC 650 MW

  8. Source Sink North Georgia to FRCC: 650 MW • Transfer Type: Generation to Load • Source: 500 kV, Murray County, GA • Sink: 650 MW of FRCC load scaled up • 488 MW Florida Power & Light • 162 MW Progress Energy Florida

  9. 650 MW North Georgia to FRCC: 650 MW • Transfer Type: Generation to Load • Source: 500 kV, Murray County, GA • Sink: 650 MW of FRCC load scaled up • 488 MW Florida Power & Light • 162 MW Progress Energy Florida

  10. North Georgia to FRCC: 650 MW Transmission System Impacts • Thermal Constraints Identified: • One (1) 500kV Line • One (1) 230 kV Line • Six (6) 115 kV Lines • Interface Constraints Identified: • One (1) 500 / 230 kV Transformer • One (1) 230 kV Line • Stability Constraints Identified: • None Identified

  11. Thermal Constraints

  12. Interface Constraints

  13. Interface Constraints

  14. North Georgia to FRCC: 650 MW Transmission Project Estimates 1 Limiting element is within FRCC Total Cost: $53,100,000

  15. Potential Enhancements P2 P1 P6 P5 P7

  16. Potential Enhancements I1

  17. Potential Enhancements I2

  18. SCE&G to Georgia 1000 MW

  19. Source Sink SCE&G to Georgia: 1000 MW • Transfer Type: Load to Generation • Source: SCE&G Load • Sink: Georgia Generation

  20. SCE&G to Georgia: 1000 MW Transmission System Impacts • Thermal Constraints Identified: • One (1) 230 / 115 kV Transformer • One (1) 115 kV Line • Interface Constraints Identified: • One (1) 500 / 230 kV Transformer • Two (2) 230 kV Lines • One (1) 230 / 115 kV Transformer • Four (4) 115 kV Lines • Stability Constraints Identified: • None Identified

  21. CENTER Thermal Constraints

  22. Interface Constraints

  23. SCE&G to Georgia: 1000 MW Transmission Project Estimates Total Cost: $48,300,000

  24. SCE&G to Georgia: 1000 MW Transmission Project Estimates 1Project I1 alleviates the need for Project P1 Total Cost: $44,500,000

  25. CENTER Potential Enhancements P2 P1

  26. P1 Potential Enhancements P2 I2 I1

  27. Gulfport, MS to Georgia 1000 MW

  28. Source Sink Gulfport, MS to Georgia: 1000 MW • Transfer Type: Generation to Generation • Source: 500 kV, Harrison County, MS • Sink: Georgia Generation

  29. 1000 MW Gulfport, MS to Georgia:1000 MW • Transfer Type: Generation to Generation • Source: 500 kV, Harrison County, MS • Sink: Georgia Generation

  30. Stability Enhancements P1

  31. Gulfport, MS to Georgia:1000 MW Transmission System Impacts • Thermal Constraints Identified1: • Six (6) 230 kV Lines • Nine (9) 115 kV Lines • Interface Constraints Identified2: • Two (2) 230 kV Lines 1 Constraints remaining after implementing stability enhancement 2 Constraints remaining after implementing all thermal enhancements

  32. Gulfport, MS to Georgia:1000 MW Transmission System Impacts Continued • Stability Constraints Identified: • With the additional transfer of 1000 MW from Gulfport, MS to the Georgia ITS, a fault on the Daniel – McKnight 500 kV transmission line could result in all of the units within the local area to pull out of synchronism with the rest of the Eastern Interconnect.

  33. Constraints After Stability Enhancements

  34. Constraints After Stability Enhancements

  35. Interface Constraints

  36. Interface Constraints

  37. Gulfport, MS to Georgia:1000 MW Transmission Project Estimates

  38. Gulfport, MS to Georgia:1000 MW Transmission Project Estimates Total Cost: $457,010,000

  39. Potential Enhancements P9 P8 P10 P4 P5 P1 P2 P12 P3 P6 I1 P11

  40. Potential Enhancements I2

  41. Washington County to Georgia 5000 MW

  42. Source Sink Washington Co. to Georgia:5000 MW • Transfer Type: Generation to Generation • Source: Washington County, GA • Sink: Georgia Generation

  43. 5000 MW Washington Co. to Georgia:5000 MW • Transfer Type: Generation to Generation • Source: Washington County, GA • Sink: Georgia Generation

  44. Washington Co. to Georgia:5000 MW Transmission System Impacts • Thermal Constraints Identified: • Ten (10) 500 kV Lines • Four (4) 500 / 230 kV Transformers • Thirty (30) 230 kV Lines • Six (6) 230kV / 115 kV Transformers • Twenty-three (23) 115 kV Lines • Interface Constraints Identified: • Three (3) 230 kV Lines • Stability Constraints Identified: • None Identified

  45. Thermal Constraints

  46. Potential Enhancements (P1) P1

  47. Thermal Constraints After P1

  48. Potential Enhancements (P1 through P3) P2 P3 P1

  49. Thermal Constraints After P3

  50. Interface Constraints

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