combined cycle power generation technology
TRANSCRIPT
Combined Cycle A subsystem of electric power generation
Tennessee Valley Authority (TVA) John Sevier Combined Cycle Plant [1]
TVA [2]
Technology Overview
Typical Plant DesignMulti-Shaft
General Electric (GE) FlexEfficiency 60 Combined Cycle Power Plant [3]
Typical Plant DesignSingle Shaft
GE FlexEfficiency 50 Combined Cycle Power Plant [4]
Operational SpecificsGas Turbine
Seimens SGT5-4000F [5]
GE [6]
Operational SpecificsHeat Recovery Steam Generator
Energy Extraction Partners [7]
Operational SpecificsSteam Turbine
GE D-17 Steam Turbine [8]
Rotor Stator Diagram [9]
Typical Technical DataTechnical Performance
Net Power New & clean: 540 MW (baseload), 610 MW(peak)Lifetime average: 528 MW (baseload), 597MW (peak)
Operating Limits Minimum load: 40 %.Cold start: 3 hoursRamp rate: 7 %/min
Scheduled outages Scheduled outage factor: 4% (15 days/yr).
Forced outages Forced outage rate: 4%Mean time to repair: 24 hours
Availability 92%
Heat rate (HHV, net, ISO conditions)
New & clean (Btu/kWh): 6880 (baseload);9290 (incremental duct firing); 7180 (fullpower)Lifetime average (Btu/kWh): 7030(baseload); 9500 (incremental duct firing);7340 (full power)
Northwest Power Planning Council [10]
[12]
Total Power GeneratedGas
TurbinesSteam Trubines
Series1
0% 25%
50%
75%
Efficiency
Open CycleCombined Cycle
[11]
Generation Sub CategoriesIntegrated Solar Combined Cycle (ISCC)
[13]
Generation Sub CategoriesIntegrated Gasification Combined Cycle (IGCC)
Carbon Capture Technology [14]
Environmental Ramifications
Emissions (Plant site, excluding gas production & delivery)Particulates (PM-10) Typical actual: 0.007 T/GWh
Sox Typical actual: 0.002 T/GWh
Nox Typical actual: 0.039 T/GWh
CO Typical actual: 0.005 T/GWh
Hydrocarbons/VOC Typical actual: 0.0003 T/GWh
Ammonia Typical actual: 0.0000006 T/GWh
CO2 411 T/GWh (baseload operation) 429 T/GWh (full power operation)
Northwest Power Planning Council [10]
ENVIRONMENTAL IMPACT ASSESSMENT STUDY REPORT [15]
[16]
Energy Security Issues
Annual EnergyOutlook 2012 [18]
Future of Technology
Annual EnergyOutlook 2012 [18]
Citations
1. http://www.tva.gov/sites/johnsevier_cc.htm2. http://www.tva.gov/power/comb_cycle_video.htm3. http://
www.ge-flexibility.com/solutions/flexefficiency-60-portfolio/index.html4. http://
www.ge-flexibility.com/solutions/flexefficiency-50-portfolio/index.html5. http://
www.energy.siemens.com/hq/en/fossil-power-generation/gas-turbines/sgt5-4000f.htm#content=Description
6. http://www.ge-flexibility.com/power-generation-basics/how-a-gas-turbine-works/index.html
7. http://eep-ces.com/technology/8. http://
www.ge-flexibility.com/products-and-services/steam-turbines/D17-steam-turbine.html
9. http://www.learnengineering.org/2013/02/working-of-steam-turbine.html
10.http://www.westgov.org/wieb/electric/Transmission%20Protocol/SSG-WI/pnw_5pp_02.pdf
11.http://memagazineblog.org/2012/07/01/efficiency-by-the-numbers/12.http://
electrical-engineering-portal.com/an-overview-of-combined-cycle-power-plant
Citations cont.
13.http://www.esolar.com/applications/power-iscc/14.http://engineering.wustl.edu/contentfiles/ecc/Backus.pdf15.http://www.miga.org/documents/Ashugani_EIA.pdf16.http://savannahnow.com/exchange/2011-08-10/new-pollution-standar
ds-impact-local-power-plants#.U0S0v_ldV8E
17.http://sites.lafayette.edu/egrs352-fa12-combinedcycle/files/2012/11/Annual-Energy-Outlook-2012.pdf
18.http://www.eia.gov/forecasts/aeo/pdf/0383(2012).pdf