Turbine Protection System (TPS)
Standard solutions
The Turbine Protection System (TPS)
is an electrical control and field sensor
modernization package designed to
replace the existing legacy protection
system on steam turbines. The TPS can
enhance turbine availability with features
such as 2-out-of-3 voting for pressure and
speed sensors.
Different option combinations can be
incorporated within the core design,
providing a customized solution built
around the specific unit requirements.
The redundant testable trip device
(below) combines vacuum, thrust, low
bearing oil pressure and trip-block
configuration in one freestanding unit.
The TPS system is available for both highand low-pressure hydraulic systems. It
can also be used in both power and
industrial applications.
Applications
Westinghouse
GE
Siemens
Allis Chalmers
MHI
Delaval
ABB
Alstom
Potential benefits
Fits within maintenance budget
Reduce downtime - on-line testing
Reduce human error - automated
testing
Extend service life - minimize stress
during testing
Improve turbine availability –
simplified on-line maintenance
Eliminate single-point failures
Built-in first-out trip indication
Features
2-out-of-3 voting standard
(other options available)
Five millisecond scan time on
overspeed protection
Automated test routines
On-line diagnostics
Pre-configured operating modes
for system failures
Built-in user interface
Built-in DCS interface
Communicates with any DCS
Proven reliable Siemens PLC
Upgradeable modular packages
24-hour customer support
Siemens world-class service
Fuji
Toshiba
SPPA-R3000 Turbine Protection System
Answers for energy.
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Turbine mechanical conversion
The standard conversion package
involves a new trip system, where as the
existing trip block and overspeed bolt are
eliminated and replaced with a 2-out-of-3
voting architecture.
The panel contains new triplicated field
devices for the parameters monitored.
Each device within the panel is on-line
testable. Field transmitters may be
calibrated online. Most components are
repairable/replaceable.
Low-pressure TPS can be easily and
cost effectively upgraded to highpressure TPS in the future if the plant
changes from MHC to EHC after a
low-pressure TPS has been installed.
Optional processor configurations
include:
Fault tolerant redundant processors
Simplex processor for cost-sensitive
applications.
Available options
An upgraded user interface with color
display and trending capability
Electronic turbine thrust proximitors
to replace legacy mechanical systems
EHC interposing relays to allow for
plant trips to be included in the
first-out trip display
Zero speed detection
Mechanical-only package.
Process configurations
A true 2-out-of-3 voting system, the
standard TPS electronics packages consist
of three processors monitoring all trip
inputs. Each processor independently
decides to issue a trip based on its set of
inputs. All three of the processors share
input and output status signals for
alarming and testing functions.
Published by and copyright © 2009:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
For more information, please contact
your local Siemens sales representative.
Siemens Energy, Inc.
Instrumentation Controls & Electrical
1345 Ridgeland Parkway
Alpharetta, GA 30004
+1 (678) 256-1500
Order No. E50001-E230-A221-X-76US
Printed in USA
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.
www.siemens.com/energy
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