With SITRAM® MONITORING from Transformer … monitoring with SITRAM® Every system in the SITRAM® MONITORING family provides continuous online monitoring of transformers. Experience

Answers for energy.

Transforming knowledge into availability. With SITRAM® MONITORING from Transformer Lifecycle Management™

4

Two key tasks for today’s transformers: Managing values and increasing availability

The challenge:

There are many reasons why your power transformers must function reliably around the clock: the high demands of your customers and processes, increasing load requirements, ever-scarcer backup power … That’s why you need monitoring solutions that provide constant information about the current status of your equipment – so you can take proactive steps to ensure high availability and a longer service life.

In many countries today, over 70 percent of transformers have been in use for over 25 years. The actual average service time often exceeds the estimated service life. Backup transformers are already being used for routine operations, and in many cases, spare parts are no longer available. Moreover, the transformers are not just being used at their nominal capacity but even to the maximum load capacity.

Under these circumstances, it’s obvious that solutions are needed to provide operators with a clear picture of the status of installed transformers at all times.

The primary goals:

� Avoiding unplanned downtimes and associated subsequent damage through risk prognosis and the early detection of errors

� Operating the transformers without

incurring damage during brief periods of overload

� Using condition-based maintenance

to streamline maintenance activities and minimize downtimes

Transformers – the key components for a reliable supply of energy

Detect faults earlier – it’s definitely more cost-efficient.

2

5

iCMS All transformers shown on one screen

Condition Monitor All key parameters at a glance

Guards Guards directly on each transformer

All levels of the SITRAM®MONITORING concept:

Mo

nito

ring

Service

More reliable decision making with specialized expertise

Whether it is in power plants, industrial plants, or transmission and distribution networks, the strategic importance of every transformer demands individual monitoring. And that’s exactly what SITRAM® delivers with Siemens’ modular online monitoring solution.

Our modular solution: Online monitoring with SITRAM®

Every system in the SITRAM® MONITORING family provides continuous online monitoring of transformers.

Experience has shown that early detection of errors is simply not possible without online monitoring. It allows measures for troubleshooting and repair to be planned and scheduled in advance, which means greater availability and a longer service life for your transformers.

Everything at a glance – preventing unplanned downtimes

3

Guards directly on the transformer: SITRAM® Guards

The family of SITRAM® Guards is comprised of standardized, proven online sensor technologies as stand-alone solutions for individual trans-formers. Different kinds of warning instruments alert staff if deviations develop that might lead to errors or unplanned downtimes. This applies also if diagnostic or repair measures become necessary.

� GAS-Guard Online gas-in-oil analysis

� PD-Guard Partial-discharge monitoring

� BUSHING-Guard Bushing monitoring

� TAPGUARD®On-load tap changer monitoring

Two key tasks for today’s transformers: Managing values and increasing availability

SITRAM®: Knowledge that increases availability

Always on alert: SITRAM® Guards

All key parameters at a glance: SITRAM® Condition Monitor (CM)

SITRAM® Condition Monitor (CM) is a modular system which integrates information from individual sensors, and the SITRAM® Guards, for every transformer. This monitoring of limit values – with a set of standard interpretation algorithms – is a cost-effective way to keep an eye on essential transformer parameters. The measured values are stored locally in a data acquisition unit and can be accessed remotely via various sophisti-cated communication interfaces.

Various visual display systems are available depending upon the customer’s philosophy. Whether on LCD displays or Web-based visualizations, the measured data can always be depicted in a user-friendly way.

Working together, we can define the “best-fit” solution for your needs.SITRAM® MONITORING has a modular structure and can be configured to precisely meet your requirements –

whether for individual transformers or complete fleets – regardless of manufacturer, power, or year of manufacture.

Example of a user-friendly data visualization

SITRAM® Condition Monitor at an industry transformer

4

Laptop

RECLOSER-M CONTROLLER

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Spectrum Power CC

More reliable decision making with specialized expertise: SITRAM® MONITORING Service

Siemens offers more than just hardware and software solutions for customized monitoring. If you wish, our experts will also consult with you personally; for example, to investigate possible sources of errors or to recommend and plan specific repair measures. If desired, our technical personnel can also handle delicate transformers via remote access.

Choosing a monitoring solution from Siemens Transformer Lifecycle Management™ (TLM™) also gives you the option of accessing our entire service portfolio.

Our experts are also happy to interpret measured values for you

Technology that translates into a valuable gain in availability for your transformers

Whether you’re dealing with transmis-sion and distribution networks, power plants, or large industrial plants, SITRAM® iCMS (integrated Condition Monitoring System) is the across-the-board solution for your transformers.

This monitoring concept is designed to use control and instrumentation technology to take advantage of synergies. That means it optimally utilizes components and sensors. At the same time, the control and instrumen-tation technology provides the platform for transformer-specific Knowledge Modules (KM). The KMs can calculate the transformer’s operating and status parameters on the basis of available measured values, design parameters, and historical events.

All transformers on the screen: SITRAM® integrated Condition Monitoring System (iCMS)

[email protected] � www.siemens.com/energy/TLM

Central control center

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Guards SensorsLocal station automation

www.siemens.com/energy

Published by and copyright © 2009:Siemens AG Energy Sector Freyeslebenstr. 1 91058 Erlangen, Germany

Siemens AGEnergy SectorTransformer Lifecycle Management™Katzwanger Str. 150 90461 Nuremberg, Germanye-mail: [email protected]/energy/TLM

For more information, contact ourCustomer Support Center. Phone: +49 180/524 70 00 Fax: +49 180/524 24 71 (Charges depending on provider) e-mail: [email protected]

Power Transmission Division Order No. E50001-G640-A103-X-7600 Printed in Germany Dispo 19200 GB 080683 61/20429 470182 WS 04092.0

Printed on elementary chlorine-free bleached paper.

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. TAPGUARD® is a registered trademark of Maschinenfabrik Reinhausen GmbH

Documents

With SITRAM® MONITORING from Transformer … monitoring with SITRAM® Every system in the SITRAM® MONITORING family provides continuous online monitoring of transformers. Experience