Wind EnergyCondition Monitoring Solutions

Key benefits

• Maintenance optimization• Downtime reduction• Cost of Energy decrease• Security improvement

Blades loads monitoring:

Sensors are either embedded into the laminate during blade manufacturing or adhesively bonded to the inner surface of the blade. MDX-400 acquisition unit is fixed in the rotating hub. The connection to the sensors is made through rugged optical cables and connectors.

• Design validation and blade certification• Emergency alarms when loads become

too high• Blade loads data input for pitch controller

With further data processing:

• Remaining lifetime estimation• Defects (cracks, delamination…) detection • Ice detection on the blades. Heating

can be activated in due time and turbine restarted safely without visual inspection.

Foundations monitoring:

SCAIME optical sensors can monitor aging due to load accumulation, soil pressure, grouting, … of any kind of foundations : concrete with sensors directly embedded inside, or metallic jackets with sensors bonded that can be ierged under sea water.

Mast monitoring:

In the mast, SCAIME sensors measure bending moments at different heights to monitor tower deformations and oscillations.They can also give the stress torsor at the mast base to check that the design limits are not reached.

SENSORS:

SCAIME sensors are either made of glass fiber reinforced plastic or aluminum alloys making them extremely easy to handle with an outstanding reliability.

• Easy and reliable handling of optical fiber• High resistance to cyclic fatigue• No EMI sensitivity• No corrosion• No drift

A comprehensive range

• Strain and temperature sensors to be bonded, welded or embedded into laminates or concrete

• Long base extensometers• Displacement sensors• Accelerometers

Optimizing Assets with Optical TechnologySCAIME designs solutions offering accuracy, robustness and reliability for the structural monitoring of wind turbines. The sensors and acquisition units offered by SCAIME measure the stresses on the blades as well as on the mast and the foundations.

ACQUISITION:

MDX400

Performance, reliability, connectivity robustness and ease of use were the main focuses when designing the MDX-400.

It is housed in a rugged stainless steel IP66 enclosure particularly well suited for harsh and salty environments.

MDX-400 successfully passed IEC-60721-3-5 class 5M2 high levels of vibrations tests, certifying long term reliability in wind turbine hub.

Beyond the robustness, the MDX-400 features advanced connectivity with an integrated web server for remote system and sensors setup and a CANopen link for simplified connection to a PLC.

•••• •••• •••• •••• FIBER OPTIC SENSORS •••• •••• •••• ••••

Model OBSG-60 OBSG-120 OBSG-120-CE OBSGW-100 OBAC OBTS-100

TypeStrain gaugefor integrationinto composite

Strain gaugeto be bonded

Strain gaugefor concrete

Strain gaugeto be welded Accelerometers Temperature

sensor

Range-5 000 … 5 000

µm/m-5 000 … 5 000

µm/m-5 000 … 5 000

µm/m-2 000 … 2 000

µm/m -2 … +2 g -30 … +80 °C

Sensitivity 1.2 pm/µm/m 1.2 pm/µm/m 1.2 pm/µm/m 1.2 pm/µm/m ±3.3 x 10-3 g/pm 10 pm/°C

Combined error 0.25 % 0.25 % 0.25 % 1 % 0.10 % 0.5 %

Resolution < 1 µm/m < 1 µm/m < 1 µm/m < 1 µm/m 0.5 % 0.1°C

Dimensions (mm) 60 x 10 x 1.1 120 x 20 x 2.8 120 x 20 x 6 150 x 19 x 10 88 x 35 x 28.2 60 x 60 x 2.8

Headquarter : Technosite Altéa - 294, Rue Georges Charpak - 74100 JUVIGNY - FRANCE

SCAIME SAS - 294, RUE GEORGES CHARPAK - CS 50501 - 74105 ANNEMASSE CEDEX - FRANCE

Tél. : +33 (0)4 50 87 78 64 - Fax : +33 (0)4 50 87 78 46 - info@scaime.com - www.scaime.comDownload all our documents on our website FA

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•••• •••• •••• •••• ACQUISITION UNITS •••• •••• •••• ••••

Model MDX-100 MDX-400 MDX-8000

Number of optical lines 1, 3 or 4 3 or 4 4 or 8

Frequency 1.6 Hz 100 Hz 1 ou 2 kHz

Resolution <1 pm <1 pm 2 pm

Repeatability 2 pm 2 pm 3 pm

Digital I/O 1 I / 4 O 1 I / 4 O 1 I / 4 O

GPS antenna connectivity ✓ ✓ ✓

Counication Ethernet / CANopen® Ethernet / CANopen® Ethernet

Storage capacity 32 Go 32 Go 32 Go

HousingStainless steel IP 66 or Rack 19’’ IP30

Stainless steel IP 66 or Rack 19’’ IP30 Rack 19'' IP30

Operating temperature -30 / +50°C -30 / +50°C -20 / +45°C

Vibrations IEC 60721-3-5 cat. 5M2 IEC 60721-3-5 cat. 5M2 N/A

Damp heat IEC 60068-2-30 IEC 60068-2-30 N/A

NA-36P-DEWI-E-0617.docx

Application case N°36P

DEWI Offshore wind turbine monitoring

Customer need

In the event of a storm, the offshore wind turbine undergoes

not only strong gusts of wind but also sea bunches that crash

on the mast. The combination of these two phenomena

generates very important constraints in the mast.

DEWI (German Institute for Wind Energy) is a certified

organization called upon to carry out measurement campaigns

aimed at verifying that the behavior of wind turbines

corresponds to the standards in force.

SCAIME solution

At the sensor level, we have proposed OBSG-60 strain gauges and OBTS-100 temperature sensors. They are measured

by the hardened MDX-400T-X.

The sensors, which are glued on a section of the mast, measure its flexion.

SCAIME products

• OBSG-60 strain gauges

• OBTS-100 temperature sensors

• MDX400T-X acquisition unit

Customer benefits

A hardened power plant capable of operating in extreme environments.

Sensors that are not damaged when the wind turbine is struck by lightning.

An easy and fast installation limiting the time spent in the wind turbine.

NA-46P-24SEA-E-0119

Application case N°46P

24SEA Subsoil load monitoring on monopiles of offshore wind turbines using

FBG strain gauges

Customer need

24SEA has been involved in various projects over the last years all

focusing on foundation monitoring. In the recent projects, for Belgian

and UK wind farms, 24SEA equipped monopiles with optical strain

gauges over the entire length of the monopile. With this innovative set-

up, the projects aim to better understand the subsoil dynamics and to

validate new design methodologies for the soil structure interaction.

In the event of a storm, the offshore wind turbine undergoes not only

strong gusts of wind but also sea bunches that crash on the mast. The

combination of these two phenomena generates very important

constraints in the mast.

SCAIME solution

SCAIME has proposed the Bragg grating sensor interrogator, MDX-400T-X, in its rugged IP66 stainless steel housing. All

FBG sensors are measured in parallel at 100Hz with high accuracy.

SCAIME products

• MDX400T-X acquisition units

Customer benefits

- High reliability thanks to the robust design

- Easy integration with advanced connectivity

- Synchronization with NTP server

Lines of sensors mounted in

the monopile