Sensonics Help Romanian Turbines Run Smoothly
25 September 2008
The supply of over 25 vibration monitoring systems for a wide range of hydro turbine plants in Romania, is the milestone recently achieved by SENSONICS, specialists in turbine supervisory systems and equipment. The latest project to have been completed is part of an extensive instrumentation upgrade for a key customer in Romania, HIDROELECTRIC SA, and is in partnership with SC TN GRUP EXIM SRL. The systems have been supplied as part of a rolling programme over the past two years, with the TN GRUP completing all installation and commissioning activities.
The Sensonics Sentry range of equipment has been utilised in all applications providing measurements of absolute bearing vibration and shaft eccentricity in combination with speed and rotor to stator air gap at selected locations. A phase reference module is included in each system for the generation of a once per revolution timing pulse to enable detailed dynamic and balancing analysis of the plant. Sensonics have provided all installed hardware, including junction boxes, plant cabling, Modbus communication modules and required set up and configuration software.
Sensonics established PZS range of shear mode accelerometers have been fitted to all bearing measurement locations and provide exactly the right performance for this type of application, with a frequency measurement response down to 0.4Hz in combination with low overall integrated noise. This is essential for Hidroelectrica’s turbines where generating running speed can be as low as 130RPM.
This transducer, in combination with the Sentry protection modules, provides operators with the capability to measure peak vibration displacement levels below tens of micro metres at the rotational speed. Moreover, the new systems provide valuable turbine vibration measurements for the plant engineers to assess the balance of the various parts of the turbine / generator and plan maintenance accordingly.
Sensonics specialise in vibration transducers for low speed applications and can provide 500mV/g and above accelerometer sensitivities, particularly suitable for hydro turbine applications. The successful upgrading of Hidroelectrica’s turbine plants is another example of Sensonics position as a leading supplier of turbine supervisory and high integrity protection equipment to industry worldwide.
Further details are available from:
Russell King, Sensonics Ltd, Berkhamsted, Hertfordshire, UK.
Tel: +44 (0) 1442 876833
Fax: +44 (0) 1442 876477