state of the art of combined cycle power plants south of graz energy efficiency conference vienna 21...
TRANSCRIPT
State of the art of combined cycle power plants
south of Graz
Energy efficiency conference
Vienna
21st October 2004
Authors:DI Josef Tauschitz
DI Martin Hochfellner
The 800 MW combined cycle power plant project
21. Oktober 2004VERBUND - Austrian Thermal Power 2
AGENDA
Short description of Verbund - Austrian Thermal Power
Overall environment for new thermal power plants
State of the art of modern gas turbines and CCGT plants
The 800 MW CCGT project Mellach
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Voits-berg
Pernegg
Neudorf-Werndorf
DONAU
Dürnrohr
SA
LZAC
H ENNS
INN
INN
Zeltweg
St. Andrä
Mellach
Korneuburg
Wien
Graz
Niederösterreich
Kärnten
DONAU
MUR
Installed capacity year 2000 : 1.964 MW
Conservation of capacity until 2007 : 1.089 MW (planned) Capacity in 2007 : 815 MW
New CCGT, start of operation 2009 : 800 MW (planned)
Capacity in 2009: app. 1600 MW
Verbund - Austrian Thermal Power
Production 2003: 5,97 TWh
Fuel Mix
9 % oil
91 % coal
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Dürnrohr
Korneuburg
Zeltweg Pernegg 1+2
VoitsbergMellach
Neudorf-Werndorf 1+2
12
St. Andrä
Thermal power generation capacity in Austria
Austria „Total“
0
1000
2000
3000
4000
5000
6000
7000
Year 2000
Year 2007
CCGT Project Mellach
0
1000
2000
3000
4000
5000
6000
7000
Austria „Nord“
0
1000
2000
3000
4000
5000
6000
7000
Austria „South“
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Overall environment for new power plants
Reduction of non profitable generating capacities Building activity of new generating capacity on a very low level Over-aging of existing power plants Annually increase of 1,6 % of the electricity consumption
Demand for new capacity is given
the project can only be realized if it shows competitiveness uncertainties are : restrictions in CO2-emissions
gas price developmentenvironmental restrictions which could lead to high investment costs
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0%
10%
20%
30%
40%
50%
60%
0,0 0,5 1,0 1,5 2,0 2,5 3,0
Log(10) of gas turbine capacity
Eff
icie
ncy (
%)
5MW
50 MW250MW
CCGT unit
gas turbine
400MW
State of the art of gas turbines and CCGT plants
Efficiencies of gas turbines and CCGT plants
10 MW 100 MW 1000 MW
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State of the art of gas turbines and CCGT plants
Specific investment costs
0%
50%
100%
150%
200%
250%
0 100 200 300 400 500 600 700 800
Capacity of CCGT (MW)
spec
ific
inve
stm
ent
cost
s (
%)
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State of the art of gas turbines and CCGT plants
Electricity generation costs
0%
20%
40%
60%
80%
100%
120%
140%
160%
180%
1,0 1,2 1,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8 3,0
log(10) of CCGT Capacity (MW)
Gen
erat
ion
Co
sts
(%)
10 MW 100 MW 1000 MW
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available gas-turbines in development / in test
Producer Alstom Siemens GE Mitsubishi GE Mitsubishi
Type -- GT 26 V94.3A GE 9FB 701F3 GE 9H 701H
Gas turbine capacity MW 274 276 269 270 334
Gas turbine exhaust temp. °C 630 585 622 586 587
CCGT capacity (ISO) MW 405 407 412 398 480 483
GT-efficiency at 100% load % Mean value = 38,7 39,5
CCGT-efficiency at 100% load % Mean value = 57,9 60 60
Available gas turbines in the 270 MW class
State of the art of gas turbines and CCGT plants
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Development of GT-efficiency
State of the art of gas turbines and CCGT plants
26
28
30
32
34
36
38
40
1975 1980 1985 1990 1995 2000 2005 2010
year
gas
tu
rbin
e ef
fici
ency
9FB
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State of the art of gas turbines and CCGT plants
Part load efficiency of CCGT plants
80%
82%
84%
86%
88%
90%
92%
94%
96%
98%
100%
30% 40% 50% 60% 70% 80% 90% 100%
Load %
rela
tive
eff
icie
ncy
(10
0%lo
ad /
par
t lo
ad)
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0,00
0,50
1,00
1,50
2,00
2,50
3,00
3,50
4,00
4,50
0 10.000 20.000 30.000 40.000 50.000 60.000 70.000 80.000 90.000 100.000
operating hours [EOh]
Lo
ss [
%]
Decrease of CCGT-capacity and –efficiency in long time operation
loss of capacity
loss of efficiency
State of the art of gas turbines and CCGT plants
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Emission limits
EU-LCP regulation Austrian Regulationload>70%
NOx (mg/Nm3) 50 35CO (mg/Nm3) - 35
State of the art of gas turbines and CCGT plants
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State of the art of gas turbines and CCGT plants
typical NOx and CO emission depending on the load
0
10
20
30
40
50
60
70
80
90
100
30% 40% 50% 60% 70% 80% 90% 100%
Load Factor
Em
issi
on
mg
/Nm
3
CO
NOx
Emission Limit NOx and CO (Austria)
Emission Limit NOx (LCP-directive)at load >70%
min Load
EU-LCP regulation Austrian Regulationload>70%
NOx (mg/Nm3) 50 35CO (mg/Nm3) - 35
NOx and CO-emission limits
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The 800 MW CCGT project „Mellach“
View at the new CCGT plant Mellach
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The 800 MW CCGT project „Mellach“
CCGT power plantTAG – Trans Austria Gas pipeline
Connection to the high voltage grid
cooling water system
district heating system
Plant layout
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Technical data of CCGT
Net capacity of CCGT 800 MW Capability of district heat supply 250 MW
Net efficiency in condensing mode 57% - 58 % Net efficiency when supplying 250MW district heat 70 %
NOx-Emission at load >60% (SCR installed) 20 mg/Nm3 NOx-Emission at low load 35 mg/Nm3
The 800 MW CCGT project „Mellach“
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2003 2004 2005 2006 2007 2008 2009
preliminary works
environmental impact analysis
tendering and order of plant
design, manufacture, erection
commissioning
commercial operation
The 800 MW CCGT project „Mellach“
Project timetable
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The 800 MW CCGT project „Mellach“