Reduction of CO 2 -emissions through flexible operation concepts

Transcription

1 Reduction of CO 2 -emissions through flexible operation concepts VGB-Kongress Kraftwerke 2011", Bern September 2011 Lothar Balling Andreas Pickard Olaf Kreyenberg Siemens Energy, Fossil Power Generation Siemens Protection AG notice All / Copyright rights reserved. notice

2 Security of energy supply is the backbone of our energy mix The investors are on the block, but

3 Agenda The actual conditions Cheap power beats supply security and environmental protection The challenge Renewables need a back-up for supply security Our favorite World class highest operational efficiency Customer benefits Your competitive advantage available already today Conclusion

4 Potential of additional demand in Germany until GW 41 Source: 1 VGB/SRU (Sachverständigenrat für Umweltfragen) 2 Ethikkommission-Deutschlands Energiewende 3 DENA 4 BMWI Nuclear phase out Retirements Fossil 1 Total demand Secured capacity renew. & savings Already under construction or awarded Demand fossil Potential for BHPP & SPP Demand for CCPP GW additional gas fired units required to provide a environmental friendly back-up solution for renewables

5 Investments in new environmental friendly fossil fired back-up solutions are in jeopardy Financial crisis causes in growing risk for project financing Low clean spark spread results in too long payback periods CO 2 tax penalize clean spark spread Low clean spark spread favors the operation of existing facilities

6 The market pays only off cheap power Unit Costs in /MWh el Average Electricity Price - 57,8 Natural Gas = 60% 23 /MWh th - 38,5 CO 2 = 60%; gas firing 40 /t - 12,0 Remaining revenues to cover generation cost - 7,3 Required coverage for new investments The clean spark spread favors nuclear and coal fired power generation with existing facilities

7 Agenda The actual conditions Cheap power beats supply security and environmental protection The challenge Renewables need a back-up for supply security Our favorite World class highest operational efficiency Customer benefits Your competitive advantage available already today Conclusion

8 residual load [MW] We need flexible plants in the future: Power Generation Scenario 2020 (Germany) High wind day Peaks 9h Typical Summer Week (June 2020) Load ramps: Average: 52 MW/min Max.: 181 MW/min Min.: 0,467 MW/min Overload time [h] h 8h h 11h Peak 4 GW 11h 2 GW 2 GW 6h 1 GW 2 GW 8h 9h 6 GW 10h 100% daily start-stop Germany 2020: Up to 100% of the non-renewable fleet requires daily start-stop operation, load ramps of about 200 MW/min to be covered

9 Operational highest efficiency Market drivers Highest efficiency through the whole load range Optimized start up and shutdown operation Wirkungsgrad Stable operation in case of grid incidents Netz- Stabilisierung On Demand Rapid availability

10 Agenda The actual conditions Cheap power beats supply security and environmental protection The challenge Renewables need a back-up for supply security Our favorite World class highest operational efficiency Customer benefits Your competitive advantage available already today Conclusion

11 Irsching 4 Combined Cycle Power Plant World record test run η=60.75% 1) Independent inspection authority verified and certified our test and operation results 1) Irsching 4 reference site conditions

12 CC Gross Efficiency SCC5-8000H 1S Highest base and part load Eff. = ~1.5%-Points SCC5-8000H 1S SCC5-4000F 1S CC Re. Power (%) Highest performance in base and part load

13 Plant Output Turbine Speed Dynamic load tests Plant fast hot start up (FACY TM, hot start-on-the-fly) Plant Start up Time < 30 min. CC Full Load GT Speed Plant Output Ø Ramp Rate > 25 MW/min ST Speed GT Load up to 35 MW/min GT ignition Time [min] base load More than half a GW in less than half an hour

14 Plant Output Turbine Speed Load tests: Plant fast shutdown (FACY TM ) and minimum stable load 600 Plant Shutdown Time < 30 min GT Speed ST Speed GT Speed 400 Plant Output 460 ST Speed MW/min GT Load 28 MW/min GT Load ~ 60 MW Plant min. load ~100 MW Time Time GT Load ~ 60 MW 0 base load Geno. breaker open Plant ramp down to minimum load at 100 MW (~ 20%) or shutdown in less than 30 minutes

15 Plant Output Steam Temperature Dynamic load tests Plant load changes 15 MW/min 35 MW/min 27 MW/min 22 MW/min 35 MW/min HP Steam Temp. 600 C Plant base load 14 MW/min 16 MW/min Plant Output GT Load Time Plant cycling operation with over 200 MW load change in less than 7 minutes

16 Dynamic capability: Frequency response Irsching 4 test results Load increase 64 MW (12%) in 10 s CC load Achieved results: Plant load increase by 12% within 10s No load reduction followed Frequency simulation 500mHz Frequency response target overachieved Potential for more stringent future demand

17 Dynamic capability: Island operation Irsching 4 test results Load decrease 250 MW (45%) in 6 s Achieved results: Deloading by 45% followed within 6 s Stable behavior of plant systems and components Island operation capability target achieved We are already prepared for the upcoming ENTSO-E network code

18 Agenda The actual conditions Cheap power beats supply security and environmental protection The challenge Renewables need a back-up for supply security Our favorite World class highest operational efficiency Customer benefits Your competitive advantage available already today Conclusion

19 Efficiency improvement enables reductions in fuel consumption and CO 2 emissions 1.5 %-point efficiency improvement Savings in fuel gas consumption Reduction in CO 2 emissions 14,700 t/year 41,000 t/year Increase your profitability and save the environment Based on 570 MW plant electrical output, 8000 base load hours/year

20 FACY improves the start up efficiency by 14%-points during a hot start Start up times hot start load conventional hot start Hot start with FACY Improved start up Improvement Conventional start up Fuel consumption (start up only) Average efficiency (time frame for conventional start) ~514 MWh ~326 MWh ~36% ~50% ~40 min. time Electricity price: 57,1 /MWh CO 2 taxes: 7,76 /t Fuel costs: 20,2 /MWh (LHV) Nightly shutdowns: 200 per year SCC5-8000H 1S with FACY technology saves ~ 717 /year (at 200 hot starts per year)

21 Customer benefits CO 2 - and fuel cost reduction Fuel consumption and CO 2 emission reduction (per night) Fuel consumption (in t) CO 2 emissions (in t) Savings (per year) Operation costs / shutdown and start up (in Mio. ) t t Mio Part load Nightly shutdown Part load Nightly shutdown Part load Nightly shutdown Fuel cost: Electricity price, night: 20.2 /MWh 29.4 /MWh CO 2 costs: 2.88 /MWh SCC5-8000H 1S cooling tower Nightly shutdowns save 452 t CO 2 per night and appr. 5 Mio per year.

22 Agenda The actual conditions Cheap power beats supply security and environmental protection The challenge Renewables need a back-up for supply security Our favorite World class highest operational efficiency Customer benefits Your competitive advantage available already today Conclusion

23 From a Vision to reality Highest highest operational flexibility *1 Promised and delivered! Now we need market conditions favoring environmental friendly backup solutions for the renewable revolution *1 Irsching 4 reference site conditions

24 Thank you for your kind attention! Siemens Protection AG notice All / Copyright rights reserved. notice

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