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

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 high- and 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

Fuji

Toshiba

Answers for energy.

SPPA-R3000 Turbine Protection System

Turbine Protection System (TPS)

Turbine-Protection-System-(TPS).indd 1 6/1/09 3:28 PM

www.siemens.com/energy

Published by and copyright © 2009:Siemens AGEnergy SectorFreyeslebenstrasse 191058 Erlangen, Germany

Siemens Energy, Inc. Instrumentation Controls & Electrical 1345 Ridgeland Parkway Alpharetta, GA 30004 +1 (678) 256-1500

Order No. E50001-E230-A221-X-76USPrinted 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.

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 high-pressure TPS in the future if the plant changes from MHC to EHC after a low-pressure TPS has been installed.

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.

For more information, please contact your local Siemens sales representative.

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.

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