Flexible and Reliable Power Generation with Gas Turbines in Open Cycle and Combined Cycle Power Plants

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1 Flexible and Reliable Power Generation with Gas Turbines in Open Cycle and Combined Cycle Power Plants Olaf Wöller, Dep.Sales Director Africa African Utility Week 2007 Cape Town

2 Siemens Technology for Power Generation... provides you components and solutions for the whole range of power plants Coal fired plant Hydro power plant Stationary Fuel cells Nuclear power plant Wind energy converter Open and Combined Cycle power plant Power Generation 2

3 What is the right type of technology? Main aspects to be considered Availability of fuel resources Economics Environmental Awareness Operational Requirements (load demand, operational flexibility,..) lead to a country and project specific answer Power Generation 3

4 Fossil Energy Data of Africa total Africa and major countries for each energy carrier Oil 9.5% of world reserves AlgeriaAngola Libya NigeriaOthers Total Africa Algeria Egypt Natural Gas 8.0% of world reserves Libya NigeriaOthers Total Africa 240 Reserves in Gtoe Range of Coverage in Years AlgeriaAngola Libya NigeriaOthers Total Africa Algeria Egypt Libya NigeriaOthers Total Africa Coal 8.1% of world reserves 35 Reserves in Gtoe Range of Coverage in Years Source: BP Statistics of 2006 South Africa Zimba bwe Others Total Africa South Africa Zimba bwe Others Total Africa Power Generation 4

5 Economics Costs of produced electricity [ cent/kwh] Nuclear *) av. European conditions Wind *) Hydro Solar PV *) Coal SPP IGCC = 1 GW/a Today ( ) 2 0% 20% 40% 60% 80% 100% Attractiveness (security of energy supply, energy policy, environmental compliance, social acceptance) Tomorrow ( ) Gas CC Economy doesn t decide on it s own. Soft -factors more often considered in customer technology choices. Power Generation 5

6 Environmental Awareness CO 2 Becomes a Driver CO 2 Emissions by Application CO 2 Reduction Through Efficient Technologies Mt CO Other Applications Electricity and Heat Generation from Gas Oil Coal % % Efficiency [%] Coal Plants (at highest available efficiency) Gas Plants (replacing coal plants) Coal Plants (as installed) Reduction potential 4.0 billion t/a CO 2 Reduction potential 1.6 billion t/a CO 2 Emissions 6.0 billion t/a CO % 41% 43% 10 Souce: IEA, Paris High Efficient Technologies Needed to Limit the CO 2 Emissions Power Generation 6

Siemens PG fossil-based technology is setting efficiency standards

steam power plant Combined-cycle power plant 58% Niederaußem, 965 MW

Development of efficiency 1992: 43 % 2005: 47 % Target 2020: > 50 %

7 Siemens PG fossil-based technology is setting efficiency standards worldwide Lignite-fired steam power plant 43% 47% Hard coal-fired steam power plant Combined-cycle power plant 58% Niederaußem, 965 MW 1992: 36 % 2005: 43 % Target 2020: > 50 % Reference STPP NRW, 600 MW Development of efficiency 1992: 43 % 2005: 47 % Target 2020: > 50 % Mainz-Wiesbaden, 400 MW 1992: 52 % 2005: 58 % Target 2020: > 60 % Power Generation 7

8 SGT6-6000G SGT5-4000F SGT5-8000H SGT5-3000E SGT6-5000F SGT6-4000F SGT5-2000E Siemens Gas Turbines From 5 MW to 340 MW Figures in MW Power Generation 8 SGT6-3000E SGT-1000F SGT6-2000E SGT SGT-200 SGT-300 SGT-400 SGT-500 SGT-600 SGT-700 SGT-100 SGT = Siemens Gas Turbine

9 Gas turbines and combined cycle power plants: from 68 MW to 832 MW Type of gas turbine SGT5-4000F SGT6-6000G SGT6-5000F Gas turbine in open cycle SGT5-3000E Combined cycle power plants single- or multi-shaft (1x1) Combined cycle power plants multi-shaft (2x1) SGT5-2000E SGT6-3000E SGT-1000F Figures in MW SGT = Siemens Gas Turbine Power Generation 9

Multi Shaft 50 Hz: SSC5-2000E SCC5-3000E 2x1 SCC5-4000F 2x1 60 Hz: SCC6-4000F 2x1

10 Combined-Cycle Reference Power Plants Single Shaft 50 Hz: SCC5-1000F 1S SCC5-3000E 1S SCC5-4000F 1S SCC5-8000H 1S 60 Hz: SCC6-1000F 1S SCC6-4000F 1S SCC6-6000G 1S Multi Shaft 50 Hz: SSC5-2000E SCC5-3000E 2x1 SCC5-4000F 2x1 60 Hz: SCC6-4000F 2x1 SCC6-5000F 1x1 / 2x1 SCC6-6000G 2x1 SCC = Siemens Combined Cycle Power Generation 10

11 Operational Requirements Short term project development Fast construction and commissioning time possible by using highly reliable technology with low environmental impact by using proven pre-engineered component packages High Operation Flexibility by capability of burning a variety of fuels as well as fast starting capability Power Generation 11

12 The Eskom 1000 MW OCGT Power Plant Siemens Scope: Engineering Procurement Manufacturing (EPC), Delivery, Erection, Commissioning, Testing Client Training Civil by client (acc.siemens Basic Design) Power Generation 12

13 The Eskom 1000 MW OCGT Power Project Atlantis site: 600 MW Mossel Bay: 450 MW Power Generation 13

14 Siemens Gas Turbine 2000E SGT5-2000E a long proven gas turbine SGT6-6000G SGT5-4000F SGT5-8000H SGT-100 SGT-200 SGT-300 SGT-400 SGT-500 SGT-600 SGT-700 SGT-800 SGT-1000F SGT6-2000E SGT6-3000E SGT5-2000E SGT6-4000F SGT5-3000E SGT6-5000F Figures in MW SGT = Siemens Gas Turbine Power Generation 14

15 The Eskom 1000 MW OCGT Power Plant Atlantis 4 x SSC5-2000E 600 MW in comm. operation 2007 Extension by 5 x SSC5-2000E planned further 750 MW Mossel Bay 3 x SSC5-2000E 450 MW in comm. Operation 2007 Extension by 2 x SSC5-2000E planned further 300 MW Power Generation 15

16 The Gas Turbine SGT5-2000E Performance Data Gross power output [MW] 168 Gross efficiency [%] 34.8 Gross heat rate [kj/kwh] 10,450 (Standard design, ISO ambient conditions Fuel: Natural Gas) Proven workhorse with excellent operational and fuel flexibility Power Generation 16

17 The Gas Turbine SGT5-2000E The perfect peaker for fuel oil Low NOx combustion system with hybrid burners for pre-mix and diffusion mode world bank criteria without water injection Proven workhorse with excellent operational and fuel flexibility Power Generation 17

18 The Gas Turbine SGT5-2000E NO x 1 World Bank SGT5-2000E Gas 61 ppm 25 ppm Fuel Oil 2) (No. 2) 80 ppm dry 80 ppm water injection 42 ppm CO no restrictions < 10 ppm UHC Gas no restrictions 4 ppm Fuel oil 2) 6 ppm 1) in premix mode at base load and ISO conditions (at 15 % Oxygen in dry exhaust gas) 2) according to ASTM Power Generation 18

19 The Gas Turbine SGT5-2000E Fast starting capability a major advantage for peaking and black start application Normal starting load gradient 13MW/ min Fast starting load gradient 30 MW/min Proven workhorse with excellent operational and fuel flexibility Power Generation 19

20 Siemens Power Generation All Rights Reserved The Gas Turbine SGT5-2000E operation not only with natural gas, but a wide range of fuel can be burned such as Diesel Fuel Oil Heavy Oil Refinery Residues about 300,000 Operating Hours with ash forming fuels about 140,000 Operating Hours with - syngas - coal gas - steel making recovery gas Proven workhorse with excellent operational and fuel flexibility Power Generation 20

The Gas Turbine SGT5-2000E highest availability due to long maintenance intervalls and short inspection outages 1500 starts possible in between major / hot gas path

21 The Gas Turbine SGT5-2000E highest availability due to long maintenance intervalls and short inspection outages 1500 starts possible in between major / hot gas path inspections! first hot gas path inspection after approx 5 years (@300 starts/y) Proven workhorse with excellent operational and fuel flexibility Power Generation 21

22 The Gas Turbine SGT5-2000E World Class Reliability FOF < 1% Power Generation 22

24 The Eskom 1000 MW OCGT Power Plant The Core Equipment Siemens proven SGT5-PAC -2000E Power Generation 24

25 The Eskom 1000 MW OCGT Power Plant Noise enclosure Terminal Point at HV-side Unit-Transformer Power Generation 25

26 Outlook Extension to the Siemens Combined Cycle Power Plant SCC5 2000E possible Power Generation 26

27 Outlook SCC5-2000E (2+1) SCC5-2000E (2+1) Total Plant View Power Generation 27

Outlook SCC5-2000E (2+1) Performance Performance :: SCC5-2000E SCC5-2000E (2+1) (2+1) Power Power output: output: ca ca 492MW 492MW Efficiency: Efficiency: ca ca 52.6 52.

28 Outlook SCC5-2000E (2+1) Performance Performance :: SCC5-2000E SCC5-2000E (2+1) (2+1) Power Power output: output: ca ca 492MW 492MW Efficiency: Efficiency: ca ca % Major Major service service interval interval and and EOH EOH Major Major Components Components Gas Gas Turbine: Turbine: SGT5-2000E SGT5-2000E (V94.2) (V94.2) Steam Steam Turbine: Turbine: SST SST (DN (DN type) type) Generator: Generator: SGen5-1000A SGen5-1000A (104/50) (104/50) Water-/Steam Water-/Steam cycle cycle configuration configuration 2 Pressure Pressure,, horizontal horizontal HRSG, HRSG, natural natural circulation circulation Power Generation 28

29 Conversion to Combined Cycle Current example : Project Az Zour, Kuwait First stage: OCGT with 8 x 2000E Comm. Operation since 2004/2005 Az Zour,, Kuwait Start CC conversion 05/2007 Final Configuration 2x (4+1) Power Generation 29

30 Thank you! S Your Partner for Power Generation Solutions Power Generation 30

Beyond 60% - Pioneering H-class Efficiency with World Class Flexibility

SCC5-8000H / Irsching 4 Beyond 60% - Pioneering H-class Efficiency with World Class Flexibility Irsching General Manager for GT Power Plant Solutions Europe, Africa, Asia and Australia Siemens AG 2011.