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Reliable and powerful –
economical, safe-investment packages
SGT6-PAC 5000F / SCC6-PAC 5000F
Answers for energy.
SGT6-PAC 5000F packages:
Flexible answers to drive your business forward
Innovation for fossil power generation is our business. As a
­technology leader, we are familiar with the global energy markets,
and always have a ready answer with our future-oriented product
portfolio in spite of constantly changing requirements. We combine
maximum performance with minimum emissions, and we achieve
high levels of energy efficiency with minimized operating costs and
calculable investments. And by continously investing in research and
development, we will ensure that this continues into the future as well.
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You’ll profit from our experience
With the comprehensive Siemens ­packages for the hightech gas turbine SGT6-5000F for combined cycle or ­simple
cycle applications, you will profit even before the plant is
commissioned. Gas turbine, generator, steam turbine,
and the corresponding auxiliary systems are combined
into a perfectly functioning unit and individually matched
to your specific project targets. In this way we can
significantly reduce the engineering work required for
coordinating interfaces and lower the risks entailed
in the performance and delivery of EPCs. Individual
components in our packages can also be combined with
other manufacturers’ models with no additional effort.
This is how we’ve made the SGT6-PAC 5000F and its
­individual components the first choice for challenging
projects. Regardless of whether you need to compete in
OPEX- or CAPEX-driven markets or if you have to face the
challenges in markets with a high share of renewables,
our power plant components will ensure that you remain
competitive.
In brief: in a dynamic energy market, the SGT6-PAC 5000F
is the ­economical and flexible answer to your project.
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Flexibility
you can rely on
We have developed a variety of packages specifically for
our proven and reliable SGT6-5000F gas turbine’s 60-Hz
market. The SGT6-5000F itself is the core component of
every package. And because we know that every project
is different and poses its own individual requirements, we
supply a variety of different turbine and package options.
Performance- or efficiency-oriented, for combined cycle
(SCC6-PAC 5000F) or simple cycle (SGT6-PAC 5000F)
applications, or designed for IGCC application.
In addition to the gas turbine, you can also rely
on the performance of all the other market-tested,
top-quality components in the SGT6-PAC 5000F package.
The SGen6-1000A generator and SST6-5000 steam
­turbine work p
­ erfectly together with the gas turbine.
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This enables you to get the full potential from all components and achieve maximum cost efficiency, whether in
peak-, intermediate, or base-load duty.
The SGT6-5000F packages: Keeping the interfaces in mind
Forward-looking technologies for c­ ompetitive power
plant operation. With the SGT6-PAC 5000F and the
­SCC6-PAC 5000F, you are right on track.
One of the attractive features of our packages is their low
lifecycle costs, thanks to the seamless coordination of the
individual components. This plays an invaluable role in
helping operators stay competitive.
SGT6-PAC 5000F SCC6-PAC 5000F
for simple cycle operation
for combined cycle operation
2 x SGT6-5000F
SGT6-5000F
3 x SGen6-1000A
SGen6-1000A
Presentation is exemplary.
SST6-5000
Additional applications are available, including MS 2 x 1 or MS 3 x 1 and MS 4 x 1, depending on specific requirements
SGT6-PAC 5000F and SCC6-PAC 5000F –
Your benefits at a glance
• Security of investment: as a result of
the long-term availability of spare parts
and service and maintenance expertise
• Minimized engineering and project
­management costs thanks to accelerated
engineering: pre-engineered package
• Shorter lead times for construction
and commissioning: standardized ­
package designs, predefined interfaces
to the ­overall power plant, utilization of
proven components
• Plant design freedom: small footprint
of packaged components, predefined
­inter­faces to the overall power plant
• Higher flexibility to fulfill both customerand site-specific requirements:
­generator cooling options, dual fuel
­option, ­air-intake system, exhaust-gas
system, and noise abatement
Scope of supply for SGT6-PAC 5000F
for ­simple cycle ­applications –
typical installation
Scope of supply for SCC6-PAC 5000F
2 x 1 MS for combined cycle applications
• SGT6-5000F (gas turbine)
• SGen6-1000A (electrical generator)
• Air intake system
• Exhaust gas system
• Start-up system
• Major auxiliary system
• Instrumentation and control
• Electrical systems
• Lubrication oil system
• Hydraulic oil system
• Turning gear
• Compressor water wash skid
• Piping packages
• Cooling systems
• Power control center
• Enclosures
• Fire protection
• 2 x SGT6-PAC 5000F
(Scope of supply identical to simple
cycle application for each SGT6-5000F)
The combined cycle application
also features
• SST6-5000 (steam turbine) including
­auxiliaries
• SGen6-1000A including ­auxiliaries
• Steam turbine electrical instrumentation
and control
Optional equipment is ­available customized to your ­project, such as
a dual-fuel combustion system, inlet heating system, and much more
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2
5
7
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The SGT6-5000F:
world class reliability – truly multitalented
Continuous flexibility, high performance and reliability, high
efficiency, and superior environmental indicators are the requirements for electricity production today. Meeting these challenges
is no problem for the SGT6-5000F and it’s various packages.
We are consistently working to make it even better, which is
why the SGT6-5000F is one of the best in class.
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Flexibility that enables you to react with
maximum efficiency
The need for flexible power generation has increased
dramatically over the years. The SGT6-5000F is the right
choice to meet those ever-changing energy demands.
The unique turbine design is always biased toward high
efficiency values. But in applications where power has
the absolute top priority, we can rapidly increase power
output by an additional 10 percent with Shaping PowerTM
– this provides operating flexibility to respond to
changing grid demands without impacting part life.
And to provide even more flexibility the SGT6-5000F with
Shaping Power TM can also operate in “max efficiency”
mode with reduced fuel consumption.
The SGT6-5000F achieves short and cost-efficient startup
times thanks to the fast start option. You can produce
power for the grid in five minutes and generate 150 MW
in ten minutes from turning gear speed. While connected
to the grid, the gas turbine can ramp at 30 MW/min –
with no service penalty.The low-load turndown option
provides you with the flexibility to reduce load down to
> 40 percent of gas turbine base load while maintaining
emissions compliance. This gives you the benefits of
remaining cost-effectively connected to the grid with
reduced fuel costs during off-peak hours, while also
avoiding startup and shutdown costs. You are therefore
able to respond more quickly to changing grid demands.
You can always rely on the SGT6-5000F for consistent
performance with low emissions and high flexibility
in operation.
Environmental friendliness that allows you
to set benchmarks
With 9 ppm NOx without water injection and less than
4 ppm CO, the SGT6-5000F boasts the lowest emission
values today. We achieve this through the Ultra Low NOx
(ULN) combustion system.
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SGT6-5000F – Your benefits at a glance
Operating flexibility:
Cost efficiency:
• Fuel flexibility – natural gas with varying Wobbe index, ­
distillate oils, and syngas
• Fuel changeover without shutting down
• Rapid startup and shutdown to quickly ­respond to grid
demands to equalize n
­ etwork fluctuations
• Fast, cost-efficient startups (five minutes to full speed
no load from turning gear, and 30 MW/min loading rates)
• Optimal fuel utilization due to high ­efficiency
• High power output (rated power output of up to 232 MW)
Best-in-class environmental performance:
• Low-emission gas turbines, single-digit NOx and
CO operation, high efficiency ­levels
• Low emissions even in partial-load operation
High availability and reliability:
• Short inspection times thanks to maintenance-friendly design.
For example, compressor blades can be easily removed and
­replaced in the field, additionally there are special service
­programs and support available ­during o
­ peration, such as
­remote online ­diagnostics
• More than 245 engines and nine million o
­ perating hours,
with more than 148,000 hours on the lead unit
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Key
1
Generator coupling
2
Variable guide vanes
3
Compressor rotating blades
4
Fuel nozzles
5
Combustors
6
Combustor transition
7
Turbine rotating blades
8
Turbine discs
9
Turbine casing
Its success proves us right
Since its market launch in 1993, the SGT6-5000F has
demonstrated world-class reliability. An operating fleet
of 245 turbines with cumulative fired hours exceeding
nine million and a fleet reliability of consistently
99 percent speaks for itself. The SGT6-5000F’s world
class reliability is achieved through proven technology,
low F-class firing temperatures, and the use of conventionally cast alloys in the turbine. Despite its low firing
temperature, the SGT6-5000F packages deliver highlevel efficiency. However, the SGT6-5000F excels not
only in worldwide service, but also with remarkable
performance parameters. Best of all, as the core package
component, the SGT6-5000F also influences the equally
exceptional performance of the packages in simple cycle
as well as combined cycle applications.
Versatility you can count on
The SGT6-5000F is the basic component in numerous
different concepts in the area of fossil electricity generation. In the 60-Hz market, it is the first choice for simple
cycle and combined cycle operation with or without
integrated gasification combined cycle (IGCC), combined
heat and power (cogeneration), and repowering. The
13-stage high-efficiency compressor and four-stage
turbine are on one central tie bolt rotor with Hirth
serration. The SGT6-5000F is designed to use a wide
range of different fuels. It runs on natural gas, lowor medium-calorific BTU gas, as well as on distillate oils –
and there is no need to shut down the turbine when
switching from gas to liquid fuel.
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The SST6-5000:
full steam ahead for your project
Fifty-six machines under contract, and about 13,000
installed MW. These figures speak for themselves –
and for our extensive experience. We’ve developed the
­SST6-5000 especially for operation in combined cycle
power plants and steam power plants for 60 Hz.
Customized designs you can count on
The SST6-5000 ­combines short startup times with high
operating performance. It consists of a combined highpressure/medium-­pressure section and a double-flow
­low-pressure section available in two models: high level
(exhaust flow downwards) and low level (exhaust flow
on one or two sides). Thanks to its modular design, the
SST6-5000 is as f­ lexible as your project requires, and can
be adapted to meet your project specific thermal cycle
needs. The turbine has been designed to minimize assembly
and commissioning costs and to reduce technical and
commercial risks for the project. Due to the customized
design of the blade path, the SST6-5000 can offer
you a range of power outputs from 120 to 600 MW.
On request, we can ­provide a suitable condenser as well.
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SST6-5000 –
Your benefits at a glance
• Maximized energy efficiency: short startup times, high
component efficiency, ­advanced blading technology,
3DV™ profiles, variable ­reaction-type blading
• Compact and cost-effective plant layout: small footprint,
single bearing between t­ urbine modules
• High versatility and reliability: proven designs for single
and multi shaft combined c­ ycle configurations
• Short project lead times: s­ tandardized auxiliary ­modules
and short delivery, i­nstallation, and commissioning times
• Reduced maintenance costs and high availability:
ten-year major inspection intervals
The SGen6-1000A:
the reliable power package
High power density in minimal space: The SGen6-1000A
manages a power range up to 310 MVA. Its compact
design makes our generator the first choice for gas,
­combined cycle, combined heat and power, and steam
power plants. With the SGen-1000A series, we offer
you a technology with a proven track record, with over
100 machines successfully in service throughout the world.
Reliable peak performance
With a world-class efficiency, the ­SGen6-1000A ranks
among the best in class, and it’s versatile, too. Depending
on the project requirements, we can offer you a choice
of TEWAC (Totally Enclosed Water-to-Air Cooling) or
OAC (Open Air Cooling) cooling systems. The air-cooled
SGen6-1000A eliminates the maintenance and safetyrelated costs associated with hydrogen cooling.
SGen6-1000A –
Your benefits at a glance
• High power output: ­world-class efficiency
• Low maintenance costs: ­reliable air-cooling system
• Low lifecycle costs: suitable for outdoor installation,
small footprint, high efficiency
• Short project lead times: ­dimensions appropriate for rail transport in most countries, simplified i­nstallation
• High availability and reliability: design based on
field-proven components
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Auxiliaries – the ideal equipment
to round out the package
We pay attention to the details. We not only
offer you the core ­components for flexible
and efficient packages, we also provide
the auxiliaries necessary for economical
and reliable operation. To minimize field
work during assembly and maintenance,
the ­auxiliary systems and associated piping
are designed and manu­factured to allow
easy access and require fewer connections.
Air intake system
Ambient air is guided and filtered to the compressor inlet
with an option for a self-cleaning (pulse) filter with automatic dust removal. Inlet air-conditioning options are available that include evaporative cooling and inlet chilling for
increased output on hot days. Inlet heating options are
available for extreme cold environments.
Exhaust gas system
Exhaust gas is guided from the gas turbine via the diffuser
to the turbine plant’s stack or to a combined cycle plant’s
heat-recovery steam generator (HRSG). A bypass stack
option is available for combined cycle plants for switching
between combined cycle mode and simple cycle mode
during operation.
Electrical system
The electrical package contains equipment necessary
for sequencing, control, and monitoring of the gas turbine
and generator. This includes the gas turbine control system,
motor control centers, generator protective relay panels,
fire protection system, battery bank, battery charger,
and dry-type transformers.
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Oil systems
The oil systems consist of a lube oil (LO) package and a
hydraulic oil power unit (HPU). The LO package provides
clean, filtered oil for lubricating and lifting the gas turbine
and generator bearings, and provides lubrication for the
turning gear. The LO skid consists of the lube oil reservoir,
LO pump, and lift-oil pumps and provides a support structure for the LO cooling system (fin-fan air or water cooled).
An all-weatherproof lube oil enclosure option is available
for cold or dusty environments. The HPU provides mediumpressure hydraulic oil to o
­ perate the gas fuel-stage throttle
valve, the inlet guide vane actuator, and the variable guide
vane actuators.
Starting system
The starting system consists of an air cooled static frequency converter (SFC) and a turning gear system. The
turning gear can be remotely and automatically operated.
The turning gear system rotates the rotor at 120 rpm
­during shutdown to facilitate a uniform cooldown. During
startup, the turning gear rotates the rotor to remove bow
and facilitate a smooth start. The turning gear also provides the breakaway torque to accelerate the gas turbine
to the speed needed to engage the SFC. The SFC accelerates
the gas turbine to ignition speed, and after successful ignition the SFC will assist in accelerating the unit to rated speed.
Compressor-water wash skid
The compressor-water wash skid is provided for on-line
and off-line c­ ompressor cleaning. It features an AC motordriven pump, piping, valves, strainer junction box, cabling,
flowmeter, and detergent storage tank. Everything is
assembled on a portable skid for greater flexibility.
Enclosures
The GT is housed in an enclosure with easy disassemble/
assemble walls for quick engine access.
Fire protection
The fire protection system gives a visual indication of
actuation at the local control panel. The fire suppressant
system provides total protection of the turbine enclosure
and the electrical control package.
There are many other options available to meet your projectspecific needs.
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The SGT6-PAC 5000F packages on site:
tailor-made success, satisfied customers
The many different options available for customizing the
SGT6-PAC 5000F technology enable you to meet your customers’
­specific requirements. On the following page, we can only offer a
brief ­overview of the extensive range of possible applications of the
­SGT6-PAC 5000F packages. Please get in touch with us if you would
like to find out how you can use our packages profitably for your
next project.
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Site: Posco
Country: South Korea
Customer: Posco Power
Plant type: CCPP MS 2x1
Commercial operation: 2011
Fuel: Natural gas
Power output: 633 MW*
Site: Kemper County
Country: U.S.
Customer: Mississippi Power Company
(a Southern Company)
Plant type: IGCC
Commercial operation: Planned for
2014
Fuel: Syngas / natural gas
Power output: 232 MW*
Site: Elk River
Country: U.S.
Customer: Great River Energy
Plant type: SCPP
Commercial operation: 2009
Fuel: Natural gas / distillate oil
Power output: 204 MW*
Genuine top performance:
Elk River Plant
Since July 2009, Great River Energy (GRE) in Minnesota
(U.S.) has placed its trust in our package technology.
GRE successfully operates a SGT6-PAC 5000F package
tasked with managing peak loads at its Elk River simple
cycle gas turbine power plant.
Great River Energy specifically opted for our SGT6-PAC
5000F package because a significant ­proportion of their
power supply is ­provided by wind power. The gas turbine
is deployed as a powerful and flexible peaker to handle
power peaks regardless of weather conditions. This is an
ideal area of application: because of its fast startup time,
the SGT6-5000F can ­com­pensate for power shortfalls in
an ex­tremely short time, and so it plays an invaluable
role in providing a reliable and stable power supply.
References all over the world:
Selected SGT6-PAC 5000F package
projects in brief
* Net values, corrected to ISO conditions
Elk River Plant – impressive features
• SGT6-PAC 5000F generating equipment: SGT6-5000F
(204 MW), 275 MVA 60-Hz SGen6-1000A generator
• 38.0 percent simple cycle efficiency
• Outstanding quick-start ­capabilities:
150 MW ten minutes after the start button is pushed;
full 204 MW ISO base-load output after just two to three
more minutes
• Low NOx emissions: less than nine ppm dry combustion
of natural gas
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Persuasive figures
SGT6-5000F
SGen6-1000A
Compressor
Frequency
60 Hz
Type
Axial flow
Power factor
0.8 to 0.9
Number of stages
13
Speed
3,600 rpm
Rotor speed
3,600 rpm
Terminal voltage
13.8 kV to 18 kV
Inlet guide vanes
Variable
Efficiency
Up to 98.8 %
Combustion system
Apparent power
165 MVA to 310 MVA
Combustors
Coolant
Air, OAC (Open Air Cooling) or TEWAC
(Totally Enclosed Water-to-Air Cooling)
Design
In accordance with IEC and ANSI standards
Thermal classification
Class F insulation system
Type of enclosure
Suitable for outdoor installation
Excitation
Static or brushless
Transport dimensions
Suitable for rail transport in most countries
Type
Dry low NOx
Configuration
Can-annular
Number
16
Fuel
Gas fuel only
Gas fuel and liquid (dual fuel option)
Syngas (option)
Turbine
Number of stages
4
Drive
Cold end, direct coupled
Starting system
SST6-5000
Turbine series
Combined high-pressure/
inter­mediate-pressure
reverse-flow (HI) modules and low-pressure (L) modules for 60 Hz
Starting system
SFC (static frequency converter)
Starting time to base load*
30 min (base)
Turning gear speed
120 rpm
Recommended inspection intervals
Plant type
Combined cycle
NOTE: Flexible service intervals are available with an LTSA
Output range
120 MW to 600 MW for combined cycle
­applications
Inspection type – gas fuel
Equivalent base hours Equivalent starts
Combustor
12,500
Temperature:
Pressure:
Hot gas path
25,000
900
Major overhaul
50,000
1,800
Main steam
(Typical parameters)
up to 600 °C / 1,112 °F
up to 177 bar / 2,566 psi
Reheat steam
(Typical parameters)
Temperature:
Exhaust areas
60 Hz: 4.4 m² to 8.7 m²;
26 inches to 38 inches*
* Last blade profile length
16
up to 600 °C / 1,112 °F
900
*A fast-start option is available to provide 150 MW in 10 minutes
SGT6-PAC 5000F
ISO conditions, net values
Configuration flexibility to meet power plant-specific needs
Power output [MW]
204 – 232
Efficiency[%]
38.0 – 38.8
Heat rate
[kJ/kWh]
9,463 – 9,278
Heat rate
[Btu/kWh]
8,970 – 8,794
Pressure ratio
17.2 – 18.9
Exhaust temperature
Exhaust temperature
[°C]
~ 593
[°F]
~ 1,100
Exhaust mass flow
[kg/s]
507 – 551
Exhaust mass flow
[lb/s]
1,118 – 1,215
SGT6-PAC 5000F MS 2 x 1
ISO conditions, net values
Configuration flexibility to meet power plant-specific needs
Power output
[MW]
633 – 687
Efficiency[%]
57.2 – 57.5
Heat rate
[kJ/kWh]
6,293 – 6,261
Heat rate
[Btu/kWh]
5,965 – 5,934
Exhaust temperature
[°C]
~ 593
Exhaust temperature
[°F]
~ 1,100
Exhaust mass flow
[kg/s]
507 – 551
Exhaust mass flow
[lb/s]
1,118 – 1,215
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Published by and copyright © 2014:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
Siemens Energy, Inc.
4400 Alafaya Trail
Orlando, FL 32826-2399, USA
For more information, please contact
our Customer Support Center.
Phone: +49 180/524 70 00
Fax: +49 180/524 24 71
(Charges depending on provider)
E-mail:support.energy@siemens.com
Power Generation Division
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Trademarks mentioned in this document
are the property of Siemens AG, its affiliates,
or their respective owners.
Subject to change without prior notice.
The information in this document contains general
descriptions of the technical options available, which
may not apply in all cases. The required technical
options should therefore be specified in the contract.