Voltage Stability Control by Statcom under fault condition ...
Fault Analysis and Condition Monitoring-birkemose
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Transcript of Fault Analysis and Condition Monitoring-birkemose
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Protection notice / Copyright notice
Siemens AG 2011. All rights reserved.
Bo Birkemose/ February 2011
Fault analysis and Condition monitoring
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E R WP EN
Siemens AG 2011. All rights reserved
.
BEGINNING OF THE WIND BUSINESS In the 80s
Turbine capacity: 15-350 KW
Maintenance: ad-hoc
Technician Expertise: low
Area of Expertise: complete turbine
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WIND TURBINE DEVELOPMENT In the 90s
Turbine capacity: Touching the MW range
Maintenance: ad-hoc
Technician Expertise: medium
Area of Expertise: complete turbine
Fault Analysis and Condition
Monitoring for Wind Turbineswas introduced
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E R WP EN
Siemens AG 2011. All rights reserved
.15/02/2011Page 4
WIND TURBINES ASPOWER PLANTS Today
Turbine capacity: 1-6 MW
Maintenance: planned
Technician Expertise: high
Area of Expertise: component specialist
Remote Analysis
Methods
Non-threshold Based
MonitoringIntegrated Condition
Monitoring
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Remote analysis Methods
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Remote analysis Methods Analysis of faults that has occurred
Product or area knowledge
Statistical and time series data
Analysis of conditions that has not yet led to a fault
Two different approaches
1. Product or area knowledge2. Statistical or mathematical approach
Mainly based on statistical data
Reactive
Preventive
Give me six hours to chop down a tree and I will spend
the first four sharpening the axe.*
* Abraham Lincoln
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Remote analysis Methodsnon threshold based
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Condition MonitoringToday approach = High level of integration with the rest of the control systems
ConditionMonitoring
TurbineControl
Non-threshold
basedmonitoring
Park & Gridcontrol
Weatherforecast
Maintenanceschedule
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Siemens AG 2011. All rights reserved
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Condition MonitoringExample of tooth damage on HS shaft
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Condition MonitoringExample of tooth damage on planet wheel
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TLC - Turbine Load Control
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Siemens AG 2011. All rights reserved.
TLC - Turbine Load Control
0%
20%
40%
60%
80%
100%
120%
0 5 10 15 20 25
Time [years]
Cu
nsumedlifetime[%]
TLC operation
Lifetime within
design
specifications
TLC on
Lifetime reached
Nominal operation
Overloaded operation
TLC on
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Grid and power quality
Grid operators start to require wind farms to behave like
conventional power plants with respect to
PF capability (Power Factor)
LVRT capability (Low Voltage Ride Through)
Frequency control
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Grid and power quality
Fixed speed = squirrel cage induction generator directly connected to the grid through transformerDFIG = Double Fed Induction Generator with Partial Scale Frequency ConverterVS-FC = Variable Speed Full Converter, includes asynchronous generators and synchronous generators
Source: E R WP SP MK
Hansen, Hansen, Market penetration of wind power concept over the years
Market analysis
DFIG architecture enjoys large worldwide
acceptance
Fixed speed and OptiSlip machines are
disappearing from the market
VS-FC is gaining popularity now
Market Share worldwide
year
Shareo
fyearly
installed
capacity
1995 2005
Fixed Speed
DFIG
VS-FC
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Grid and power quality
0,69/33 kV
WTG TrafoConverter
33 kV
Busbar
33 kV
Busbar 132 kV
Busbar
132 kV
PCC
0,69/33 kV
WTG TrafoConverter
0,69/33 kV
WTG TrafoConverter
33 kV
Busbar
33 kV
Busbar
PPVC
PPFC
OLTC
Example of park pilot and tap change control
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E R WP EN Siemens AG 2011. All rights reserved
.
BeginningDevelopment
phaseToday's
power plants
Requirements for todays large scale wind power plant operation
Remote analysis capabilities
Preventive monitoring methods
Condition Monitoring (TCM)
Main component lifetime monitoring (TLC)
Non threshold based monitoring
Grid Control
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E R WP EN Siemens AG 2011. All rights reserved
Thank you!