1 / 33

Ansaldo Energia: Gas Turbine an enabler for intermittent power

Ansaldo Energia: Gas Turbine an enabler for intermittent power. Daniela Gentile Ansaldo Energia Innovation and Product Development. Marsh Power Forum Security of Supply Istanbul, October 9-10 th , 2013. Scenario Trends of Italian Electricity Market

kirti
Download Presentation

Ansaldo Energia: Gas Turbine an enabler for intermittent power

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ansaldo Energia: Gas Turbine an enabler for intermittentpower Daniela Gentile Ansaldo Energia Innovation and Product Development MarshPower Forum Security of Supply Istanbul, October 9-10th, 2013

  2. Scenario • Trends of Italian Electricity Market • Future Scenario and Impact on Combined Cycle AnsaldoEnergia Activities & Solutions • Combustion Stability • Lifing & Materials • Control System • Instrumentation Conclusion

  3. Trends of Italian Electricity Market Energy Production Sources Mix EVOLUTION FROM 2008 TO 2012 347 328 72% 62% Source: Terna, Monthly Report on Electric System Energy Production Sources in Italy, GWh

  4. Trends of Italian Electricity Market Thermal Power PlantsMonthly Energy Production (allfuels) ~ 6 GWh/monthlesssince 2008 12-month movingaverage Source: Terna, Monthly Report on Electric System steady decreaseof 3-4% per yearsince 2008

  5. Trends of Italian Electricity Market PEAK SHAVING: FromAugust 2010 to August 2013… 2013 2010 45% 70% Source: Terna, Monthly Report on Electric System …in 3 yearsthermal PP production share in peakhour from 70% to 45%

  6. Future Scenario and Impact on Combined Cycle Efficiency Increase -> CO2 emission reduction Minimum Load Reduction -> to enable the feed in of additional RES (renewable energy sources) without a loss of security of supply and grid stability Startup Time Reduction -> more gas fired power plants could start and stop twice a day economically -> additional RES Load Ramp Rate Increase -> to promptly react to request or RES generation variations, assuring grid stability and security Impact of the New Scenario on CombinedCycle

  7. Scenario • Trends of Italian Electricity Market • Future Scenario and Impact on Combined Cycle AnsaldoEnergia Activities & Solutions • Combustion Stability • MEL • Grid Support • Start-Up time reduction • Material Lifing • Instrumentation Conclusion

  8. FlexibilityPackages CombustionStability Start-Up Time Reduction FlexibilityPackages MEL GridSupport

  9. FlexibilityPackages CombustionStability Start-Up Time Reduction FlexibilityPackages MEL GridSupport

  10. CombustionStability Ansaldo Energia Activities & Solutions CombustionChambercoolingoptimization Differentburnerconfigurationstested CombustionStability: SAS UP UPGRADING & Tests Control Valves GV2-3 Variable setpoint connected with Load & Ambient Temperature BurnerInsertredesign Holesreduction TBC Increasing Upgradedcombustion system Sealing Ring TV2 improved design CombustionChamber InternalhousingHolesreductiontocool the brickholdersof the ceramictiles External Housing Combustion Chamber Reduction diameter of the cooling holes

  11. CombustionStability Ansaldo Energia Activities & Solutions TIT ISO Increase GT & CC Performance (Power & Efficiency) POWER MODE TIT ISO ENVIRONMENTAL MODE 20 30 40 50 NOxEmissions [mg/Nm3]

  12. Helmholtz resonators in combustion chamber ToControlThermoacousticPhenomena in orderto reduce CombustionInstability • 1st prizeFinmeccanica Innovation Award 2013 • New improved design hasbeentested on La Casella GT in 2012 • AEN patent under application • Application on Escatron GT for commercial operation on March 2014 Ansaldo Energia reservesall right on thisdocumentthatcannotbe reproduced in any part withoutitspreviouswrittenconsent

  13. 9LS DiagonalswirlerDualLinesPremixBurner Ansaldo Energia Activities & Solutions • Additionalpremixline: 20 nozzles • DualLinesPilotBurnerrner • Premixline: 20 vanes, 9 holeseach • DiffusionPilot • 4 feedingpipes • Premixedpilot • 4 holes pattern

  14. FlexibilityPackages CombustionStability Start-Up Time Reduction FlexibilityPackages MEL GridSupport

  15. AE94.3A4 Flexibility Packages: MEL reduction AE.94.3A4 HR3 AE.94.3A2 HR3 165 MW NOx < 50 mg/Nm3 Emissionslimits NOx < 30 mg/Nm3 CO < 30 mg/Nm3 140 MW AE.94.3A2 VeLoNOx IGV extra closure AE.94.3A4 VeLoNOx 125 MW CO Catalyst - 30 MW - 10-15 MW Antiicing Increasing Secondary Air Flow at Min. Load - 3÷5 MW Regulating Blow-off - 8 MW Ansaldo Energia reservesall right on thisdocumentthatcannot be reproduced in any part withoutitspreviouswrittenconsent

  16. MEL Reduction • VeLoNOx • New burner with increased and optimized exhaust gas temperature at partial load 2° stage set-point Ambient temp. Norm. Load Secondary Air Control (SAC) • Variable set point for cooling air flow to GT blades, according to GT load and ambient temperature

  17. MEL Reduction • CO Catalyst • Cost for catalyst, installation and maintenance is paid back by fuel saving Anti-icing • Compressor bleed to reduce mass flow and increase inlet temperature

  18. MEL Reduction by Regulating Blow-Off Lines • Goals: Minimum Load reduction according to pollutants emission limits (MEL) • Selected Approach: compressor airflow by-passing burners to sustain combustion temperature at Min Load • Proposed Solution: opening bleeding blow-off lines in regulating mode • Numerical Analysis: GT 1d model + CFD • Field Testing: 5th stage BO line opening @ MEL Expected performances validated by on-site field measurements (Customer 1 GT, May 2013) Ansaldo Energia reservesall right on thisdocumentthatcannotbe reproduced in any part withoutitspreviouswrittenconsent

  19. MEL Evolution 2004 AE94.3A2 165 MW 2006 HyperClosure IGV NOx< 25 ppm 150 MW VeloNOx Burner 2007 AE94.3A4 GV2 GV3 135 MW SAS Upgraded 2008 2011 • SAS Upgrading • RegulatingBlow Off 125 MW 2012 120 MW 110 MW 2013 2014 NOx < 15 ppm 100 MW 94 MW • SAS Upgrading • Anti-icing • RegulatingBlow Off

  20. FlexibilityPackages CombustionStability Start-Up Time Reduction FlexibilityPackages MEL GridSupport

  21. LoadGradient – February 2013 • InitialTarget 32 MW/min from Minimum Load to 97 % Load • SAS Upgraded GT • NOx Target < 30 mg/Nm3 Load 115270 MW 42 MW/min 115275 MW 32 MW/min Load 596% BL in 3’40’’ 596% BL in 4’ 50 ’’ Combustion Dynamics Combustion Dynamics Target matched and improved : 42 MW/min with stablecondition Ansaldo Energia reservesall right on thisdocumentthatcannot be reproduced in any part withoutitspreviouswrittenconsent

  22. GridSupport Case Study: Congo Island Operation • Solution: • Two AE94.2 Gas Turbines, • one in Load Control and one in Speed Control Solution implemented and successfully tested, running from February, 2011 Scenario: • Project ENI CONGO (Pointe Noire): Country with high instability of grid frequency • Load variation up to 40 MW • Situations with no other power plants on grid

  23. GridSupport: Voltage RegulationRussia Case Study • Scenario • Supply of 11 GT toRussian market • Russian grid: extended and highlyunstable.Advanced PSS to comply with Russian regulation • 81 Tests with different gridconfigurations at • NIIPT- PowerTransmissionResearchInstitute-labs Tuned PSS • Solution • PSS (Supplier Ansaldo Sistemi Industriali) • Tuningbased on Eigenvaluesanalysisin atypicalconfigurationof a 4 generatorstest caserequiredbyRussiangrid Obtained Russian EES Certification

  24. FlexibilityPackages CombustionStability Start-Up Time Reduction FlexibilityPackages MEL GridSupport

  25. 95%IGV Grad.22MW/min 125 MW Grad. 13 MW/min Grad.6.5 MW/min 30 MW Flame on  95% IGV in 44’ Flame on  125 MW in 32’ FAST START UP TEST Ansaldo Energia reservesall right on thisdocumentthatcannotbe reproduced in any part withoutitspreviouswrittenconsent

  26. Lifing / Materials Ansaldo Energia Activities & Solutions Lifing / Materials: ST FlexibilityImprovements RSEOPT: Automatic off-line tool based on FEM calculation Preprocessor:HTC e Tbulk Calculation Test Campaign for Material Properties Postprocessor:LCF Calculation FEM Calculation Conscious ST Startup Time Reduction  • Results • Temperature and Stress History • Life Consumption Calculation Power Plant Start-up Curves Simplified Model Validation New RSE on Automation System • Analytical simplified model • Metal temperature & stress calculation • Cycle identification: Rainflow countingmethod • LCF Life Consumption Calculation

  27. Control System Ansaldo Energia Activities & Solutions Control System Packages

  28. Lifing / Materials Ansaldo Energia Activities & Solutions ↑Efficiency→ ↑ TIT ISO Materials Coatings Coolings Lifing / Materials: GT Blades & Vanes 2 Cycling Increase 1 NS Limit Number of Starts (NS) EOH Limit Firing Hours

  29. Instrumentation Ansaldo Energia Activities & Solutions 2013 -2014 Innovative humming measurement: piezo or OH detection Instrumentation More performance & flexibility More thermomechanical stress It is essential to monitor the functioning of the components Mantova CCPP – 2013 Tip clearance measurements Micro wavestip clearance instrument Thrustbearingmeasurement Rotortelemetrymeasures Mantova CCPP – 2013 Inside GT temperature measurements (compressor & turbine) Voghera CCPP – 2013 Thrust Bearing displacement measurements Innovative hummingmeasurements Compressor

  30. CONCLUSION • FlexibilityIssueisnot a Transient • Fast Implementing Solution to support CCPP to cope with FlexibilityRequirements • Innovation Project to insurematerials and solutions for future upgradingcapable to deal with bothhigher performance and more flexibleoperation

  31. Back-up

  32. Trends of Italian Electricity Market 2008-2012 (yearly variation): +9 TWh wind energy production +18.6 TWh PV energy production -17.3 TWh gross energy consumption (-4.9%) RENEWABLES GROWTH GSE - Impianti a fonti rinnovabili in Italia: Prima stima 2012 (28/02/2013) 16/06/2013: National Unique Price (PUN) = 0 €/MWh for 2 hours GME – MGP daily report (16/06/2013)

  33. Future Scenario and Impact on Combined Cycle Italy, 2020: Towards a Gas / Renewables mix + stability & security from Gas Future Scenario Europe, Horizon 2020: -20% greenhouse gases emissions + efficiency + cogeneration Strategia Energetica Nazionale: per un’energia più competitiva e sostenibile (March 2013) Example: California prediction for 2020 + 13500 MW in 2 hours California Independent System Operator (CalISO)

More Related