Siemens Energy SectorEnergy Sector

Turbine Condition Monitoring TCM® And Reliability.Mikkel MaehlisenMikkel Maehlisen

© 2008 Siemens Energy, Inc. Energy Sector

© 2009 Siemens Energy, Inc. Energy Sector

Siemens Service is a global organization with local set up

Siemens has a global service

Think Global

Siemens has a global service organization structured to allow for the deployment of the highest qualified personnel on time

New markets are established with a local presenceResources, skills, tooling and experience are

Act transferred locally, to allow for optimized response times

ActLocal

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 2

Service offerings/packages

Definition of service products and service packages

Service packages Service products

Packaged products Non-packagedproducts

LT ding

Owner-ship

O&MTrainingTrainingRepair

Yield management

TPSA

A

of ri

sk/ c

usto

mer

bin

d

Time & PartsTurbine Condition Monitoring (TCM),

Monitoring, Upgrades

Long-Term Program (LTP)

g

Major repairs

Offshore products

p

Spare parts

Fault analysis

Reporting

Logistics

Scheduled services

Fleet management

ASA

Leve

l o

Service Agreement (SA)

Short and long term Service Availability Agreement (SAA)

Warranty

Load balancing

Optimization of spares

Oil

Monitoring

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 3

1) Excluding grid codesSource: SWP Service

Warranty (TSA) Mods & upgrades Current service scope

Service key performance indicators (KPI)

Key values of SWP Service

Accident-free performance is our highest priority1 Safety

We aim for error free processes, procedures, reportingand continuous improvement2 Quality

Accident free performance is our highest priority1 Safety

Our goal is on time delivery of information, proposals, technical support, products & services to meet customer requirements

3 Responsiveness

We aim for a safe working environment where everyonestrives for quality and responsiveness4 Customer

satisfaction

Business

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 4Source: SWP Service

With satisfied customers, we will achieve our business results5 Businessresults

Regional availability statistics

Region Americas Production Availability Statistics

100.0097%Target

98.00

99.00

97% Target

95.00

96.00

97.00%

94.00 Nov-2006

Dec-2006

Jan-2007

Feb-2007

Mar-2007

Apr-2007

May-2007

Jun-2007

Jul-2007

Aug-2007

Sep-2007

Oct-2007

Nov-2007

Dec-2007

Jan-2008

Feb-2008

Mar-2008

Apr-2008

May-2008

Jun-2008

Jul-2008

Jul-2008

Aug-2008

Sep-2008

Oct-2008

Nov-2008

Dec-2008

Jan-2009

Feb-2009

Mar-2009

Apr-2009

Month

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 5

Month

Overall Cumulative Fleet Average

TCM® condition monitoring can increase production/availability

Allows for optimized planning of service work, which can reduce service cost

Better planning of service work can reduce down-time

Allows for preventive repair of components before fatal breakdown

Increased possibilities for further technical development

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 6

Allows for continuous monitoring

Measurement points in a 2.3-MW nacelle

Location of sensors

Main Bearing: 1Main Bearing: 1

Gearbox: 3

Generator: 2

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 7

Component descriptions within the nacelle

ICP ModuleX/Y Module ICP ModuleX/Y ModuleM – System Computer

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 8

Frequency Response 2Hz -10kHzFrequency Response 0 -1kHz

TCM® service from Siemens

Illustration indicates waterfall plot from the TCM® database

Plot peak indicates a frequency change deviating from the base line

When detected, the turbine will shut down and a visual inspection is plannedp p

The frequency of this development is loaded into the TCM® system, and all turbines

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 9

into the TCM® system, and all turbines globally should benefit from the findings.

TCM® allows for real-time data of turbine performance

Subsequent findings validate TCM® indication

Crack visually detected, allowing for preventive maintenance to be performed prior to unit failure

24/7 continuous monitoring

Globally acquired data is analyzed for continued improvement

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 10

TCM® user interface

- alarm status

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 11

Advanced turbine monitoring system operating worldwide

TCM® system is an integrated component in large Siemens wind turbines

Currently operating in more than 2,000 turbines worldwide

Allows for preventive maintenance ratherAllows for preventive maintenance rather than forced maintenance

Standard on 2.3-MW and 3.6-MW Siemens wind turbine fleet

“Learning system” that allows for data analysis, which may be promptly applied to all TCM®-equipped turbines in the

© 2009 Siemens Energy, Inc. May 4-7, 2009 Mikkel MaehlisenPage 12

Siemens worldwide fleet