southeastern region transmission planning 2009 sertp economic studies
TRANSCRIPT
Southeastern RegionSoutheastern RegionTransmission
Planning Transmission
Planning
2009 SERTP2009 SERTP
Economic StudiesEconomic Studies
2009 SERTP
Economic Planning StudiesEconomic Planning Studies
2009 SERTP
Five Economic Planning StudiesFive Economic Planning Studies
North Georgia to FRCCNorth Georgia to FRCC• 650 MW650 MW
SCE&G to Georgia SCE&G to Georgia • 1000 MW1000 MW
Gulfport, MS to Georgia Gulfport, MS to Georgia • 1000 MW1000 MW
Washington County, GA to Georgia Washington County, GA to Georgia • 5000 MW5000 MW
Savannah, GA to Southern Balancing Savannah, GA to Southern Balancing AuthorityAuthority
• 400 MW Summer Peak400 MW Summer Peak• 1000 MW Off Peak1000 MW Off Peak
2009 SERTP
Power Flow Cases UtilizedPower Flow Cases Utilized Study year: 2014Study year: 2014 Load Flow Cases:Load Flow Cases:
• 2009 Series Version 2A2009 Series Version 2A• Summer Peak with 2250 MW Interchange Summer Peak with 2250 MW Interchange
to FRCC, 3600 MW to FRCC, and to FRCC, 3600 MW to FRCC, and ShoulderShoulder
2009 SERTP
Five Economic Planning Studies Five Economic Planning Studies Final Report Components:Final Report Components:
• Thermal AnalysisThermal Analysis• DC contingency analysis to attain DC contingency analysis to attain
monitored/contingency pairs with Siemens monitored/contingency pairs with Siemens PSS MUSTPSS MUST
• AC verified with Siemens PTI PSS/EAC verified with Siemens PTI PSS/E
• Interface Transfer Capability ImpactsInterface Transfer Capability Impacts• Stability ImpactsStability Impacts• Potential SolutionsPotential Solutions
• Transmission Projects and Cost EstimatesTransmission Projects and Cost Estimates
2009 SERTP
• The following information does not represent a The following information does not represent a commitment to proceed with the recommended commitment to proceed with the recommended enhancements nor implies that the enhancements nor implies that the recommended enhancements could be recommended enhancements could be implemented by the study date of 2014. 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.
North Georgia North Georgia
to to
FRCCFRCC
650 MW650 MW
North Georgia to FRCC: 650 MW
• Transfer Type: Generation to LoadTransfer Type: Generation to Load
• Source: 500 kV, Murray County, GASource: 500 kV, Murray County, GA
• Sink: 650 MW of FRCC load scaled upSink: 650 MW of FRCC load scaled up• 488 MW Florida Power & Light488 MW Florida Power & Light
• 162 MW Progress Energy Florida162 MW Progress Energy Florida
Source
Sink
North Georgia to FRCC: 650 MW
• Transfer Type: Generation to LoadTransfer Type: Generation to Load
• Source: 500 kV, Murray County, GASource: 500 kV, Murray County, GA
• Sink: 650 MW of FRCC load scaled upSink: 650 MW of FRCC load scaled up• 488 MW Florida Power & Light488 MW Florida Power & Light
• 162 MW Progress Energy Florida162 MW Progress Energy Florida
650 MW
North Georgia to FRCC: 650 MW
Transmission System ImpactsTransmission System Impacts Thermal Constraints Identified:Thermal Constraints Identified:
• One (1) 500kV LineOne (1) 500kV Line• One (1) 230 kV LineOne (1) 230 kV Line• Six (6) 115 kV LinesSix (6) 115 kV Lines
Interface Constraints Identified:Interface Constraints Identified:• One (1) 500 / 230 kV TransformerOne (1) 500 / 230 kV Transformer• One (1) 230 kV LineOne (1) 230 kV Line
Stability Constraints Identified:Stability Constraints Identified:• None IdentifiedNone Identified
Thermal Constraints
Interface Constraints
Interface Constraints
North Georgia to FRCC: 650 MW
11 Limiting element is within FRCC Limiting element is within FRCC
ItemItem Potential ProjectPotential Project CostCost
P1P1 North Americus – North Tifton 115 kV TLNorth Americus – North Tifton 115 kV TL $1,350,000$1,350,000
P2P2 Douglas – Kettle Creek 115 kV TLDouglas – Kettle Creek 115 kV TL $900,000$900,000
P3P3 Thalmann – Duval 500 kV TLThalmann – Duval 500 kV TL N/AN/A11
P4P4 Lloyd Shoals – South Griffin 115 kV TLLloyd Shoals – South Griffin 115 kV TL $500,000$500,000
P5P5 Barneyville – Pine Grove 115 kV TLBarneyville – Pine Grove 115 kV TL $250,000$250,000
P6P6 Mitchell – Moultrie 115 kV TLMitchell – Moultrie 115 kV TL $3,000,000$3,000,000
P7P7 Jasper – Pine Grove 115 kV TLJasper – Pine Grove 115 kV TL $11,000,000$11,000,000
I1I1 North Tifton 500 / 230 kV SubstationNorth Tifton 500 / 230 kV Substation $36,000,000$36,000,000
I2I2 Woodstock 230 kV SubstationWoodstock 230 kV Substation $100,000$100,000
Total Cost: $53,100,000Total Cost: $53,100,000
Transmission Project EstimatesTransmission Project Estimates
Potential Enhancements
P1
P6
P2
P5
P7
Potential Enhancements
I1
Potential Enhancements
I2
SCE&G SCE&G
to to
GeorgiaGeorgia
1000 MW1000 MW
SCE&G to Georgia: 1000 MW
• Transfer Type: Load to GenerationTransfer Type: Load to Generation• Source: SCE&G LoadSource: SCE&G Load• Sink: Georgia GenerationSink: Georgia Generation
Source
Sink
SCE&G to Georgia: 1000 MW
Transmission System ImpactsTransmission System Impacts Thermal Constraints Identified:Thermal Constraints Identified:
• One (1) 230 / 115 kV TransformerOne (1) 230 / 115 kV Transformer• One (1) 115 kV LineOne (1) 115 kV Line
Interface Constraints Identified:Interface Constraints Identified:• One (1) 500 / 230 kV TransformerOne (1) 500 / 230 kV Transformer• Two (2) 230 kV Lines Two (2) 230 kV Lines • One (1) 230 / 115 kV TransformerOne (1) 230 / 115 kV Transformer• Four (4) 115 kV LinesFour (4) 115 kV Lines
Stability Constraints Identified:Stability Constraints Identified:• None IdentifiedNone Identified
Thermal Constraints
CENTER
Interface Constraints
SCE&G to Georgia: 1000 MW
ItemItem Potential ProjectPotential Project CostCost
P1P1 Avalon Junction – Bio 115 kV TLAvalon Junction – Bio 115 kV TL $3,800,000$3,800,000
P2P2 Gainesville #2 115 kV SubstationGainesville #2 115 kV Substation $200,000$200,000
I1I1 Athena – Hartwell 230 kV TLAthena – Hartwell 230 kV TL $44,000,000$44,000,000
I2I2Center Primary 230 kV SubstationCenter Primary 230 kV Substation
$300,000$300,000Athena 230 kV SubstationAthena 230 kV Substation
Total Cost: $48,300,000Total Cost: $48,300,000
Transmission Project EstimatesTransmission Project Estimates
SCE&G to Georgia: 1000 MW
ItemItem Potential ProjectPotential Project CostCost
P1P1 Avalon Junction – Bio 115 kV TLAvalon Junction – Bio 115 kV TL $3,800,000$3,800,000
P2P2 Gainesville #2 115 kV SubstationGainesville #2 115 kV Substation $200,000$200,000
I1I1 Athena – Hartwell 230 kV TLAthena – Hartwell 230 kV TL11 $44,000,000$44,000,000
I2I2Center Primary 230 kV SubstationCenter Primary 230 kV Substation
$300,000$300,000Athena 230 kV SubstationAthena 230 kV Substation
Total Cost: $44,500,000Total Cost: $44,500,000
Transmission Project EstimatesTransmission Project Estimates
1Project I1 alleviates the need for Project P1
Potential Enhancements
CENTER
P1
P2
Potential Enhancements
I1
I2 P1
P2
Gulfport, MS Gulfport, MS
to to
GeorgiaGeorgia
1000 MW1000 MW
Source
Sink
Gulfport, MS to Georgia: 1000 MW
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: 500 kV, Harrison County, MSSource: 500 kV, Harrison County, MS• Sink: Georgia GenerationSink: Georgia Generation
Gulfport, MS to Georgia:1000 MW
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: 500 kV, Harrison County, MSSource: 500 kV, Harrison County, MS• Sink: Georgia GenerationSink: Georgia Generation
1000 MW
Stability Enhancements
P1
Gulfport, MS to Georgia:1000 MW
Transmission System ImpactsTransmission System Impacts Thermal Constraints IdentifiedThermal Constraints Identified11::
• Six (6) 230 kV LinesSix (6) 230 kV Lines• Nine (9) 115 kV LinesNine (9) 115 kV Lines
Interface Constraints IdentifiedInterface Constraints Identified22::• Two (2) 230 kV Lines Two (2) 230 kV Lines
1 1 Constraints remaining after implementing stability Constraints remaining after implementing stability enhancementenhancement
2 2 Constraints remaining after implementing all Constraints remaining after implementing all thermal enhancementsthermal enhancements
Gulfport, MS to Georgia:1000 MW
Transmission System Impacts Transmission System Impacts ContinuedContinued
Stability Constraints Identified:Stability Constraints Identified:• With the additional transfer of 1000 MW With the additional transfer of 1000 MW
from Gulfport, MS to the Georgia ITS, a from Gulfport, MS to the Georgia ITS, a fault on the Daniel – McKnight 500 kV fault on the Daniel – McKnight 500 kV transmission line could result in all of the transmission line could result in all of the units within the local area to pull out of units within the local area to pull out of synchronism with the rest of the Eastern synchronism with the rest of the Eastern Interconnect. Interconnect.
Constraints After Stability Enhancements
Constraints After Stability Enhancements
Interface Constraints
Interface Constraints
Gulfport, MS to Georgia:1000 MW
ItemItem Potential ProjectPotential Project CostCost
P1P1 Daniel – Snowdoun 500 kV TLDaniel – Snowdoun 500 kV TL $340,000,000$340,000,000
P2P2 Daniel – Bennett 230 kV TLDaniel – Bennett 230 kV TL $23,000,000$23,000,000
P3P3 Barry - Crist 230 kV TLBarry - Crist 230 kV TL $2,200,000$2,200,000
P4P4 South Montgomery – Union Spring 115 kV TLSouth Montgomery – Union Spring 115 kV TL $3,500,000$3,500,000
P5P5 Pike County – Snowdoun 230 kV TLPike County – Snowdoun 230 kV TL $18,300,000$18,300,000
P6P6 Farley – South Bainbridge 230 kV TLFarley – South Bainbridge 230 kV TL $2,500,000$2,500,000
P7P7 Anniston – Bynum 230 kV TLAnniston – Bynum 230 kV TL $10,000,000$10,000,000
P8P8 Bull Creek – Victory Drive 115 kV TLBull Creek – Victory Drive 115 kV TL $2,500,000$2,500,000
P9P9 Crooked Creek – Martin Dam 115 kV TLCrooked Creek – Martin Dam 115 kV TL $8,500,000$8,500,000
P10P10 Madison Park – Thurlow Dam 115 kV TLMadison Park – Thurlow Dam 115 kV TL $750,000$750,000
…… ……Continued…Continued… ……
Transmission Project EstimatesTransmission Project Estimates
Gulfport, MS to Georgia:1000 MW
ItemItem Potential ProjectPotential Project CostCost
…… ...Continued…...Continued… ……..
P11P11 South Bainbridge 230 kV SubstationSouth Bainbridge 230 kV Substation $20,000,000$20,000,000
P12P12 Bainbridge Area 115 kV Network Bainbridge Area 115 kV Network EnhancementsEnhancements $5,000,000$5,000,000
I1I1 Bennett – North Theodore 230 kV TLBennett – North Theodore 230 kV TL $760,000$760,000
I2I2 Goat Rock – Fortson 230 kV TLGoat Rock – Fortson 230 kV TL $20,000,000$20,000,000
Transmission Project EstimatesTransmission Project Estimates
Total Cost: $457,010,000Total Cost: $457,010,000
Potential Enhancements
P1P2
P3
P6
P9
P5
P8
P4
P10
P11
P12
I1
Potential Enhancements
I2
Washington County Washington County
to to
GeorgiaGeorgia
5000 MW5000 MW
Source
Sink
Washington Co. to Georgia:5000 MW
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: Washington County, GASource: Washington County, GA• Sink: Georgia GenerationSink: Georgia Generation
Washington Co. to Georgia:5000 MW
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: Washington County, GASource: Washington County, GA• Sink: Georgia GenerationSink: Georgia Generation
5000 MW
Washington Co. to Georgia:5000 MW
Transmission System ImpactsTransmission System Impacts Thermal Constraints Identified:Thermal Constraints Identified:
• Ten (10) 500 kV LinesTen (10) 500 kV Lines• Four (4) 500 / 230 kV TransformersFour (4) 500 / 230 kV Transformers• Thirty (30) 230 kV LinesThirty (30) 230 kV Lines• Six (6) 230kV / 115 kV TransformersSix (6) 230kV / 115 kV Transformers• Twenty-three (23) 115 kV LinesTwenty-three (23) 115 kV Lines
Interface Constraints Identified:Interface Constraints Identified:• Three (3) 230 kV Lines Three (3) 230 kV Lines
Stability Constraints Identified:Stability Constraints Identified:• None IdentifiedNone Identified
Thermal Constraints
Potential Enhancements (P1)
P1
Thermal Constraints After P1
Potential Enhancements (P1 through P3)
P3
P2
P1
Thermal Constraints After P3
Interface Constraints
Interface Constraints
Washington Co. to Georgia:5000 MW
ItemItem Potential ProjectPotential Project CostCost
P1P1
1 Yr. Advancement of Bethabara 230 / 1 Yr. Advancement of Bethabara 230 / 115 kV Project from 2015115 kV Project from 2015 $3,200,000$3,200,000
1 Yr. Advancement of East Walton 500 / 1 Yr. Advancement of East Walton 500 / 230 kV Project from 2015230 kV Project from 2015 $13,300,000$13,300,000
P2P2 East Walton – South Hall 500 kV TLEast Walton – South Hall 500 kV TL $54,500,000$54,500,000
P3P3 Rockville – ECO2 500 kV TLRockville – ECO2 500 kV TL $81,700,000$81,700,000
P4P4 3 Yr. Advancement of the Middlefork – 3 Yr. Advancement of the Middlefork – Thomson 500 kV TLThomson 500 kV TL $47,300,000$47,300,000
P5P5 Wilson 230 kV SubstationWilson 230 kV Substation $300,000$300,000
P6P6 Vogtle 500 / 230 kV SubstationVogtle 500 / 230 kV Substation $35,300,000$35,300,000
P7P7 Waynesboro 230 / 115 kV SubstationWaynesboro 230 / 115 kV Substation $50,000$50,000
P8P8 Jesup – Ludowici Primary 115 kV TLJesup – Ludowici Primary 115 kV TL $1,750,000$1,750,000
…… ……Continued…Continued… ……
Transmission Project EstimatesTransmission Project Estimates
Washington Co. to Georgia:5000 MW
ItemItem Potential ProjectPotential Project CostCost
…… ……Continued…Continued… ……
I1I1Wadley Primary – Waynesboro Primary Wadley Primary – Waynesboro Primary
230 kV TL230 kV TL $500,000$500,000
I2I2 Dum Jon – Goshen 230 kV TLDum Jon – Goshen 230 kV TL $500,000$500,000
I3I3 Goat Rock – Fortson 230 kV TLGoat Rock – Fortson 230 kV TL $20,000,000$20,000,000
Total Cost: $258,400,000Total Cost: $258,400,000
Transmission Project EstimatesTransmission Project Estimates
Potential Enhancements (P1 through P8)
P4
P5
P6
P7
P3
P2
P1
Potential Enhancements
I1
I2
Potential Enhancements
I3
Savannah, GA Savannah, GA
to to
Southern Balancing Southern Balancing AuthorityAuthority
400 MW – Summer Peak400 MW – Summer Peak
1000 MW – Off Peak1000 MW – Off Peak
Source
Sink
Savannah, GA to SouthernBalancing Authority
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: Savannah, GASource: Savannah, GA• Sink: Southern Balancing AuthoritySink: Southern Balancing Authority
Savannah, GA to SouthernBalancing Authority
• Transfer Type: Generation to GenerationTransfer Type: Generation to Generation• Source: Savannah, GASource: Savannah, GA• Sink: Southern Balancing AuthoritySink: Southern Balancing Authority
400 MW Summer1000 MW Off Peak
Savannah, GA to SBA400 MW Summer Peak
Transmission System ImpactsTransmission System Impacts Constraints Identified:Constraints Identified:
• Two (2) 230kV LinesTwo (2) 230kV Lines• One (1) 115kV LineOne (1) 115kV Line
Interface Constraints Identified:Interface Constraints Identified:• None Identified None Identified
Stability Constraints Identified:Stability Constraints Identified:• None IdentifiedNone Identified
Thermal Constraints
Savannah, GA to SBA400 MW Summer Peak
ItemItem Potential ProjectPotential Project CostCost
P1P1
1 Yr. Advancement of the Bethabara 1 Yr. Advancement of the Bethabara 230/115kV Project from 2015230/115kV Project from 2015 $3,200,000$3,200,000
1 Yr. Advancement of the East 1 Yr. Advancement of the East Walton 500/230 kV Project from Walton 500/230 kV Project from
20152015$13,300,000$13,300,000
P2P2 Athena – Union Point 115kV TLAthena – Union Point 115kV TL $11,300,000$11,300,000
Total Cost: $27,800,000Total Cost: $27,800,000
Transmission Project EstimatesTransmission Project Estimates
Potential Enhancements
P2
P1
Savannah, GA to SBA1000 MW Off Peak
Transmission System ImpactsTransmission System Impacts Thermal Constraints Identified:Thermal Constraints Identified:
• One (1) 115kV LineOne (1) 115kV Line
Interface Constraints Identified:Interface Constraints Identified:• None Identified None Identified
Stability Constraints Identified:Stability Constraints Identified:• None IdentifiedNone Identified
Thermal Constraints
Savannah, GA to SBA1000 MW Off Peak
ItemItem Potential ProjectPotential Project CostCost
P1P1 McIntosh – Yemassee 115kV TLMcIntosh – Yemassee 115kV TL $675,000$675,000
Total Cost: $675,000Total Cost: $675,000
Transmission Project EstimatesTransmission Project Estimates
Potential Enhancements
P1
2009 SERTP
Project Cost Summary Project Cost Summary North Georgia to FRCCNorth Georgia to FRCC
• $53,100,000$53,100,000 SCE&G to Georgia SCE&G to Georgia
• $44,500,000$44,500,000 Gulfport, MS to Georgia Gulfport, MS to Georgia
• $457,010,000$457,010,000 Washington County to Georgia Washington County to Georgia
• $258,400,000$258,400,000 Savannah, GA to Southern Balancing Savannah, GA to Southern Balancing
AuthorityAuthority• $28,475,000$28,475,000
• $27,800,000 for Summer Peak$27,800,000 for Summer Peak• $675,000 for Off Peak$675,000 for Off Peak
Questions?Questions?