Energy Instrumentation, Controls & Electrical

Turbine Protection System (TPS)

SPPA-R3000 Turbine Protection System

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)

  5 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

Application:

  Westinghouse   GE

  Siemens

  Allis Chalmers

  MHI

  Delaval   ABB

  Alstom

  Fuji

  Toshiba

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 of 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 units 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 high pressure hydraulic systems and low pressure hydraulic systems.

The TPS system can be used in both power and industrial applications.

High Pressure Redundant Testable Trip Device

Published by and Copyright 2008:

Siemens Energy, Inc. Instrumentation, Controls & Electrical 1345 Ridgeland Parkway, Suite 116 Alpharetta, GA 30004 USA Tel: 678.256.1500 Fax: 678.256.1553 siemens.com/energy/controls

All rights reserved. Subject to change without prior notice. Printed on paper treated with chlorine- free bleach.

Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners.

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 there-fore be specified in the contract.

Available Option

■  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 available

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 on-line. Most components are on-line repairable / replaceable as well.

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 their input and output status signals for alarming and testing functions.

Optional processor configurations include: ■  Fault tolerant redundant processors ■  Simplex processor for cost sensitive

applications High Volume Trip Block Assembly for Low or High Pressure System

Operator Monitor (Optional) Display