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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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slide1

2009 SERTP

Economic Studies

2009 sertp
2009 SERTP

Economic Planning Studies

2009 sertp3
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
2009 sertp4
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
2009 sertp5
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
2009 sertp6
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.
slide7

North Georgia

to

FRCC

650 MW

north georgia to frcc 650 mw

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
north georgia to frcc 650 mw9

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
north georgia to frcc 650 mw10
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
north georgia to frcc 650 mw14
North Georgia to FRCC: 650 MW

Transmission Project Estimates

1 Limiting element is within FRCC

Total Cost: $53,100,000

slide18

SCE&G

to

Georgia

1000 MW

sce g to georgia 1000 mw

Source

Sink

SCE&G to Georgia: 1000 MW
  • Transfer Type: Load to Generation
  • Source: SCE&G Load
  • Sink: Georgia Generation
sce g to georgia 1000 mw20
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
sce g to georgia 1000 mw23
SCE&G to Georgia: 1000 MW

Transmission Project Estimates

Total Cost: $48,300,000

sce g to georgia 1000 mw24
SCE&G to Georgia: 1000 MW

Transmission Project Estimates

1Project I1 alleviates the need for Project P1

Total Cost: $44,500,000

slide27

Gulfport, MS

to

Georgia

1000 MW

gulfport ms to georgia 1000 mw

Source

Sink

Gulfport, MS to Georgia: 1000 MW
  • Transfer Type: Generation to Generation
  • Source: 500 kV, Harrison County, MS
  • Sink: Georgia Generation
gulfport ms to georgia 1000 mw29

1000 MW

Gulfport, MS to Georgia:1000 MW
  • Transfer Type: Generation to Generation
  • Source: 500 kV, Harrison County, MS
  • Sink: Georgia Generation
gulfport ms to georgia 1000 mw31
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

gulfport ms to georgia 1000 mw32
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.
gulfport ms to georgia 1000 mw37
Gulfport, MS to Georgia:1000 MW

Transmission Project Estimates

gulfport ms to georgia 1000 mw38
Gulfport, MS to Georgia:1000 MW

Transmission Project Estimates

Total Cost: $457,010,000

potential enhancements39
Potential Enhancements

P9

P8

P10

P4

P5

P1

P2

P12

P3

P6

I1

P11

slide41

Washington County

to

Georgia

5000 MW

washington co to georgia 5000 mw

Source

Sink

Washington Co. to Georgia:5000 MW
  • Transfer Type: Generation to Generation
  • Source: Washington County, GA
  • Sink: Georgia Generation
washington co to georgia 5000 mw43

5000 MW

Washington Co. to Georgia:5000 MW
  • Transfer Type: Generation to Generation
  • Source: Washington County, GA
  • Sink: Georgia Generation
washington co to georgia 5000 mw44
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
washington co to georgia 5000 mw52
Washington Co. to Georgia:5000 MW

Transmission Project Estimates

washington co to georgia 5000 mw53
Washington Co. to Georgia:5000 MW

Transmission Project Estimates

Total Cost: $258,400,000

slide57

Savannah, GA

to

Southern Balancing Authority

400 MW – Summer Peak

1000 MW – Off Peak

savannah ga to southern balancing authority

Source

Sink

Savannah, GA to SouthernBalancing Authority
  • Transfer Type: Generation to Generation
  • Source: Savannah, GA
  • Sink: Southern Balancing Authority
savannah ga to southern balancing authority59

400 MW Summer

1000 MW Off Peak

Savannah, GA to SouthernBalancing Authority
  • Transfer Type: Generation to Generation
  • Source: Savannah, GA
  • Sink: Southern Balancing Authority
savannah ga to sba 400 mw summer peak
Savannah, GA to SBA400 MW Summer Peak

Transmission System Impacts

  • Constraints Identified:
    • Two (2) 230kV Lines
    • One (1) 115kV Line
  • Interface Constraints Identified:
    • None Identified
  • Stability Constraints Identified:
    • None Identified
savannah ga to sba 400 mw summer peak62
Savannah, GA to SBA400 MW Summer Peak

Transmission Project Estimates

Total Cost: $27,800,000

savannah ga to sba 1000 mw off peak
Savannah, GA to SBA1000 MW Off Peak

Transmission System Impacts

  • Thermal Constraints Identified:
    • One (1) 115kV Line
  • Interface Constraints Identified:
    • None Identified
  • Stability Constraints Identified:
    • None Identified
savannah ga to sba 1000 mw off peak66
Savannah, GA to SBA1000 MW Off Peak

Transmission Project Estimates

Total Cost: $675,000

2009 sertp68
2009 SERTP

Project Cost Summary

  • North Georgia to FRCC
    • $53,100,000
  • SCE&G to Georgia
    • $44,500,000
  • Gulfport, MS to Georgia
    • $457,010,000
  • Washington County to Georgia
    • $258,400,000
  • Savannah, GA to Southern Balancing Authority
    • $28,475,000
      • $27,800,000 for Summer Peak
      • $675,000 for Off Peak