We are operating successfully in the Power Generation Market for over 35 years,
being a leader in generator services for various OEM designs, including ABB, Alstom,
Siemens Westinghouse, Allis Chalmers, Elektrosila and others.
Generator upgrades completed by our experienced staff are based on innovative
technology solutions which focus on significantly reducing generator vibration
and noise level during operation.
Example of 200 MW generator upgrade scope
* Generator rotor modernization
* Generator stator core modernization and its suspension system upgrade
* Generator stator winding modernization and winding support system upgrade
* Generator auxiliary system modernization
A comprehensive modernization covering replacement of generator auxiliary equipment,
like the two-chamber hydrogen drier, seal oil supply system, main-lead bushings,
assures safe and long life of the modernized generators.
Benefits resulting from our upgrade approach
* Increasing of rated power by 15%
* Limiting the possibility of abrasion of stator bar insulation
* Limiting the possibility of loosening stator core and winding
* Life extension of slip-rings and brush sets
* More effective operation of the seal oil system
* Life extension of stator windings
Our modernization enables the increase in the generator active power by 15% (for
example from 200 MW to 230 MW) and enables an operation in the range from 40%
to 100% of rated load.
Furthermore, the new wedging system, applied in the stator, using double tapered
wedges with ripple springs extends the life and increases the recommended inspection
intervals to up to eight years.
Our customers are fully satisfied with the completed complex generator modernizations,
particularly for the 200 MW and the 360 MW units. Worth mentioning is also a fact,
that these upgrade services are very economical.