Reduce costs by optimizing
combustion in gas turbines
Diagnostic Suite
Instrumentation, Controls & Electrical
SPPA-D3000 Combustion Dynamics
Monitoring
monitors and diagnoses the combustion
behavior in gas turbines with a view to
avoiding damage to the combustion chamber
and optimizing combustion processes.
Combustion Dynamics Monitoring can
be used for all turbine types from GE,
MHI, Alstom, Westinghouse and Siemens.
Your Benefits
The ability to operate at an
economic optimum means
that a return on investment
can be realistically expected
within one to two years
depending on operating
mode.
The Task
Pressure fluctuations can result in considerable
damage to combustion chambers, can increase
fuel consumption and have adverse effects on
emissions. The aim is to monitor combustion
behavior at a reasonable cost with such a
degree of accuracy that pressure fluctuations
can be avoided and turbines can be operated
at their economic optimum.
Our Solution
Combustion chambers produce an individual
"acoustic fingerprint". A change in this fingerprint points to incipient damage. The system
stores the fingerprint and monitors and analyzes
the process continually by means of noise
monitoring. Consequently, this contributes to
avoiding mechanical wear and to maintaining
combustion at an optimum at all times, both
in terms of economy and emissions.
Combustion Dynamics Monitoring is robust and
is comparatively simple to install and integrate
into the I&C.
Diagnostic display of combustion chamber: An important
element in comprehensive diagnostics designed to avoid
damage
■ Reduced maintenance and
repair costs
Signal amplifier
Acoustic sensor
Darling tubes
■ Safety thanks to
comprehensive diagnostics
■ Higher overall turbine
availability
■ Lower emissions
Answers for energy.
Technical variants
1. Stand-alone unit for monitoring
combustion dynamics
The system can be operated as a standalone unit. It comprises one probe per
combustion chamber. These probes are
connected to the computer in the control
room via an amplifier unit. The measured
signal for each combustion chamber is
continuously monitored in four significant
frequency ranges. The limit values for
alarms and warnings can be individually
configured. An alarm is generated if a
defined limit value is exceeded allowing
correction measures to be initiated
promptly.
2. Combustion Dynamics Protection
The system can also be integrated into the
I&C in such a way that a load reduction is
automatically triggered when a critical
situation is identified. This means that
turbine protection is independent of the
reactions of operating personnel.
The "acoustic fingerprint" of the combustion chamber provides important information about
combustion and emissions behavior.
3. Combustion Dynamics Protection
with integrated Emissions Optimizer
In the event of unstable combustion
(humming), the fuel-to-air mixture can be
automatically enriched such that the
turbine can always be operated at an
optimal operating point with respect to
NOx emissions.
Main technical components
■ Acoustic sensors
■ Sensor housings
■ Signal amplifier
■ Damping tubes
■ Darling tubes (infinite acoustics)
■ Cables and cable ducts
■ Data acquisition and evaluation
computers
■ Workstation (for the control room)
■ Software
General features
■ Local and centralized operation and
monitoring
■ Configurable limit values for alarms
and warnings
■ Data archiving and trend display
Data acquisition and evaluation computers:
The heart of Combustion Dynamics Monitoring
Published by and copyright © 2012:
Siemens AG, Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
For more information contact
sppa-d3000.energy@siemens.com
www.siemens.com/energy/sppa-d3000
Siemens Energy, Inc.
Instrumentation, Controls, & Electrical
1345 Ridgeland Parkway, Suite 116
Alpharetta, GA 30004, USA
D3CD_FS_CDMS_e_V2-0
Order No. E50001-G230-A171-X-4A00
Printed in Germany
Dispo 05401, c4bs-Nr. 7465
Printed on elementary chlorine-free
bleached paper.
■ Boolean gating of alarms
■ Open interfaces, e.g. for OSI PI
All rights reserved.
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.