Safe and efficient operation of power generator requires specialized monitoring systems.

The overwhelming majority of the world’s electric power is created by turbine-driven generators. Large scale generators typically range from 500 Megawatts to 1.5 Gigawatts and are designed for continuous uninterrupted operation. Inevitably, generators must be brought offline during planned inspections and maintenance or forced offline for immediate repair, with significant revenue losses for the power producer.

By combining state-of-the-art sensing techniques with predictive data analytics, Condition-Based Maintenance can be highly effective.

The majority of the world’s electric power is created by turbine.

Benefits of FBG Technology

Fiber Optic technologies, specifically Fiber Bragg Grating (FBG) based, have been selected by manufacturers as the preferred solution for power generators monitoring.


Due to all the constraints and limitations associated to power generators monitoring, a fiber optic solution is an ideal choice for these machines as the optical signals carried by the fibers are immune to EMI/RFI and passive, reducing the hazards of operating in a hydrogen-cooled application.

Siemens Vibration Sensor
play

FiberSensing and Siemens

Over the past few years, FiberSensing has been producing and delivering complete monitoring systems based on FBG technology, specifically developed for Siemens power generators, on an OEM basis.


The OEM supply contract between FiberSensing and Siemens includes the development, production and installation of fiber optic vibration monitoring (FOVM) and fiber optic temperature monitoring (FOTM) systems for large scale power generators.


These monitoring solutions allow real time measurement of vibration, temperature and strain used for Condition-Based Maintenance of Power Generators.

  • 10 k Samples/second (FOVM)
  • +650 Installed Vibration Sensors
  • +50 Delivered FO Systems
  • 16 Vibration Sensors measured simultaneously

Fiber Optic
Vibration
Monitoring

The FOVM system consists of:

  • Adapted to be integrated in the power plant control room

    Real-time operating system

    High-sensitivity (high SNR in FFT)

    Analog outputs for all sensors (0-10 V)

    Alarm relays

    1 Measurement Unit

  • Compatible with hydrogen or air cooling

    Direct thread on generator wall

    2 Pressure Seal Feedthroughs

  • Frequency range up to 400 Hz

    High sensitivity

    Dielectric housing and cabling

    16 Fiber Optic Vibration Sensors

  • Low loss (DWDM technology)

    Compact

    2 Optical Multiplexers

Fiber Optic
Temperature
Monitoring

The FOTM System is composed by:

  • Adapted to be integrated in the power plant control room

    Real-time operating system (measurement)

    Simultaneous monitoring of all sensors

    Analog outputs for all sensors (4-20 mA)

    Alarm relays

    1 Measurement Unit

  • Calibrated operation up to 200ºC

    High accuracy

    Dielectric housing and cabling

    32 Fiber Optic Temperature Sensors

  • Compatible with hydrogen or air cooling

    Direct thread on generator wall

    4 Pressure Seal Feedthroughs

  • Low loss (DWDM technology)

    Compact

    4 Optical Multiplexers

FiberSensing has been supplying both systems since 2008 to Siemens, with +50 systems already delivered.

The new generation of the FOVM system is being currently developed and the company has good expectations for the coming years as the demand of new monitoring solutions for the high power generators market is increasing.

Your browser is out-of-date!

Update your browser to view this website correctly. Update my browser now

×