Power and Gas
SST-PAC 5000 - Steam Turbine Package
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www.siemens.com/steamturbines
Siemens SST-5000 series
Overview
A broad range of turbine modules meet individual
requirements for power ratings and steam parameters.
Preassembled modules reduce coordination
effort, on-site assembly time, and technical risk.
Their modularized design guarantees technical
replicability. For each project, Siemens customizes
the turbine train and blade path to ensure optimal
performance.
The highest reliability and availability are proven
by a forced outage rate that is less than half the
North American Electric Reliability Council (NERC)
average.
Siemens Steam Turbines of the SST-5000 series are
operated in combined cycle power plants (CCPP)
and in coal-fired steam power plants (SPP).
The SST-5000 steam turbine combined with a
SGT-8000H gas turbine, achieves a world record
efficiency of 61.5 percent in combined cycle
applications.
The SST-5000 series consists of a combined highpressure/intermediate-pressure (HI) turbine, and a
low-pressure (LP) turbine.
4
[1] High-pressure/intermediatepressure turbine
It is installed as a low- or high-level arrangement.
There are various exhaust configurations available
to create an optimized plant layout: down-, single-,
and double-sided.
[2] Low-pressure turbine
[3] Valve
Various extractions are possible for feed water preheating (up to 9 stages), process steam, and district heating.
[4] Crossover pipe
[5] Bearing
2
5
1
Turbines of the SST-5000 series are operated in
about 130 units in various power plant sites.
Customer Benefits
Flexibility Performance Availability
3
Trusted
Partner
For us, flexibility means fulfilling our customers’
requirements
Short start-up time to ensure grid stability
Variable start-up modes
Flexible steam extractions
Open cycle operation during steam turbine
maintenance
Technical Data
Generator
SGen-2000H
Power output:
CCPP: 120 MW to 650 MW
SPP: 120 MW to 650 MW
Main steam conditions:
Pressure up to 177 bar / 2,567 psi
Temperature up to 610 °C / 1,112 °F
Efficiency:
CCPP: 61.5 %
SPP: 43.0 %
Reheat steam conditions:
Temperature up to 610 °C / 1,112 °F
Frequency: 50 or 60 Hz
Speed: 3,000 or 3,600 rpm
Last stage blade length:
50 Hz: 66,4 to 142,3 cm / 26.2 to 56 inches
60 Hz: 65,5 to 95,4 cm / 25.8 to 37.6 inches
Apparent
power
Generator
SGen-1200A
Instrumentation
and Controls
50 Hz
60 Hz
350 MVA to
600 MVA
310 MVA to
600 MVA
Power factor 0.80
0.85
Efficiency
up to 99%
up to 99%
Terminal
voltage
16.5 kV to
22 kV
19 kV to 23 kV
The SGen-2000H series of hydrogen-cooled, twopole generators has ratings up to 600 MVA for
steam, gas, and combined cycle applications.
Cooling performance is greatly enhanced by
using hydrogen as cooling medium.
[1] Blade ring
[2] LP turbine blading
[3] Turning gear
[4] HI turbine blading
[5] Push rod
[6] Seals
2
1
6
4
5
3
Steam Power Plant Gent, Belgium - Exciter, SGen5-2000H,
SST5-5000
Maintenance of SST-5000
Unit Years
3
years
6
years
9
Assembly
years
12
years **
Minor, medium and major inspections including the generator
EOH*
25,000
Minor
Inspection
50,000
Medium
75,000
Minor
Inspection
Inspection
Combined high-pressure/intermediate-pressure
turbine modules are delivered to site completely
assembled – this allows a fast and simple on-site
installation.
Due to transportation restrictions, low-pressure
turbine modules are delivered in several sections,
like the rotor and inner and outer casings.
100,000 **
Major
Inspection
[ ~ 2 weeks ]
[ ~ 3 weeks ]
[ ~ 2 weeks ]
[ ~ 6 weeks ]***
First opening
of Steam Turbine
Modules
*EOH = Equivalent Operating Hours
**Estimated values (base load)
***Depending on shift mode and customer requirements
Auxiliaries
The core turbine modules as well as the auxiliary
systems are designed for maximum customer value:
Minor Inspection
Medium Inspection
Major Inspection
Visual inspection of accessible components, including
condenser
Lube oil system, seal oil system, seal steam system,
evacuation system, hydrogen system, and additional
systems.sy
Functional checks on valve and control components
Minor
Inspection
Alignment checks
Optional: Inspection of non-accessible areas with
boroscope
Opening of HP casing:
Condenser Evacuation System
Reference examples
Power island for combined cycle power plant.
SCC6-8000H 1S (single shaft)
Dangjin III, South Korea
2
1
5
4
3
[1] Dangjin III, South Korea
[2] Lausward, Germany
Siemens turbines are making Dangjin III the most
efficient combined cycle power plant currently
operating in Asia.
[3] Nhon Trach II, Vietnam
[4] Panda Temple, Texas, USA
[5] Yangcheng, China
Commercial operation: 2013
Power output: 400 MW
Efficiency: 60%*
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*Plant efficiency
Published by:
Siemens AG 2016
Power and Gas Division
Freyeslebenstr. 1
91058 Erlangen
Germany
Customer Support Center:
Phone +49 / (0) 180 / 524 70 00
Fax
+49 / (0) 180 / 524 24 71
(Charges depending on provider)
E-mail: support.energy@siemens.com
Subject to changes and errors. The information given in
this document only contains general descriptions and/or
performance features which may not always specifically
reflect those described, or which may undergo modification in the course of further development of the products.
The requested performance features are binding only
when they are expressly agreed upon in the concluded
contract.
© 02.2016 Siemens AG