csem sa mc-monitoring sa maurizio tormen laurent aebi ... · pvs –piezoelectric acceleration...
TRANSCRIPT
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Integrated fiber optics acceleration sensors for
hazardous environments
A partnership between CSEM SA and MC-monitoring SA
CSEM SA
Maurizio Tormen
Senior Project Manager
MC-monitoring SALaurent Aebi
Vice Director
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Content
Company Presentation
Main Markets
Product life span
Testing environment
Questions?
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Key partner for demanding customers providing reliable, cost
effective and innovative monitoring solutions
COMPANY
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Core CompetencesS
enso
rs a
nd c
ondi
tione
rs
Projects
CMS - Condition Monitoring Software
Data Aquisition Module (vibration, airgap & PD)
Fiberoptic
Acceleration
Sensors
• Sensors
• Cables
• Integrated
electronics
Air Gap
Transmitters
• Sensors
• Impedance
adapter
modules
• Conditioners
Accelero- &
Velocimeters
• Linearized
velocity sensors
• Piezo-electric
sensors
• Charge
amplifiers
Special
proximity
probes
• Runner
clearance
probes
• Submersible
proximity
probes
Partial
Discharge
Sensors
• Sensors
COMPANY
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Main markets
Monitoring of hydrogenerators Monitoring of Gearless Mine Drives (GMD)
Monitoring of turbogenerators
Zarnowiec, Poland Lafarge, France
Alstom Power Thermal Services
Monitoring of gearless
windmills
Monitoring of industrial machines
Tabreed
Main Markets
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Monitoring solution for turbo generators
PVS – Piezoelectric Acceleration Sensors
PMS-200-EW Data Acquisition
PDC-xx-1000 –
Partial Discharge Sensors
FAS – Fiberoptic Acceleration Sensor
VPM-100 – Process Module
TMS-5x41 – PD Monitoring
Vibration Analysis Software
PD Analysis Software
Main Markets
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Monitoring solution for turbo generators
PVS – Piezoelectric Acceleration Sensors
PMS-200-EW Data Acquisition
PDC-xx-1000 –
Partial Discharge Sensors
FAS – Fiberoptic Acceleration Sensor
VPM-100 – Process Module
TMS-5x41 – PD Monitoring
Vibration Analysis Software
PD Analysis Software
Main Markets
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Content
Company Presentation
EW-monitoring
Product life span
Testing environment
Questions?
Main Markets
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Technical environment
Necessity to monitor endwinding vibrations
Cause
• Endwinding vibration is due to strong
electromagnetic forces at twice the
synchronous frequency
• Deterioration is accelerated when the
self resonance frequency of the stator
bar is similar to the double synch.
frequency
Effects/Observations
• Weakening of the structure
• Weakening of the insulation (cracks)
• Failure of the cooling system
• Cracking of the conductor
• Potentially short-circuit
Endwinding deterioration:
Friction dust
Original status:
Dominant self
Resonance frequency at
2X – Heavy vibration
Shift of the Resonance
frequency
- Progressive wear of insulation
- Structural weakness
Source: Erweiterte Diagnoseverfahren für Kraftwerksturbosätze
Fr
100Hz
200Hz
Endwinding
Main Markets
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Fiberoptic Acceleration Sensor “FAS”
– Vibration measurements in hazardous and explosive environments
– Immune against electrical and magnetic fields
– Highly isolated: more than 65kV demonstrated
Design
– Sensor head: Sensitive element placed on the end-winding
– Fiberoptic cable with PTFE protection tube: transmission of optical signal
– Conditioner: Signal conditioning with dual output (acceleration/displacement)
Fiberoptic Acceleration Sensor: FAS-Sensor
ADVANTAGE : No electrical coupling between sensor head
and cubicle = NO DANGER TO LIFE
Main Markets
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Content
Company Presentation
Main Markets
Product life span
Testing environment
Questions?
Environment
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Requirements
Monitored parameter
Product requirements
Environment
Description Unit Range Tolerances Status
Minimum frequency range [Hz] 10 to 400 -3 dB By design
Linearity [g] 0.1 to 40 +/- 10% By design
Resonant frequency [Hz] > 600 By design
Sensitivity [mV/g] 100 +/- 10% By design
Temperature range [°C] -20 to +90°C +/- 10% By design
Product life span [years] 10 >10 years To be defined ?
Monitored parameter Measuring unit Accepted deviation
Sensitivity [mV/g] +/- 10%
Electrical current consumption [mA] +/- 10%
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Content
Company Presentation
Main Markets
Product life span
Testing environment
Questions?
Life span
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Steady-state temperature robustnessLife span
1h
..
.Te
mp
era
ture
Time
35°C
100°C
3h
( ): Measurements
Step 1 : Heating / 15min
Step 2 : High temperature
Step 3 : Cooling
Minimum exposition temperature: 100oC
Temperature variation: 35-100oC
Exposition time equivalency at 100oC: 1’000hours
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Constant acceleration testLife span
0
200
400
0 200 400 600 800 1000
Sen
siti
vity
[m
V/g
]
Frequency [Hz]
Temperature variation: 35-100oC
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Content
Company Presentation
Main Markets
Product life span
Testing environment
Questions?
Questions
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Questions ?
MC-monitoring SA
Suisse
www.mc-monitoring.com
Questions?
Environment during operation
10 years product life span
Environment during testing
Accelerated ageing ?