Torsional protection system and method for wind turbine

Details Torsional protection system and method for wind turbine Torsional protection system and method for wind turbine

2011-05-10

2011-05-10

Ponomarenko, Nicholas (Department: 2839)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C322S058000

Reexamination Certificate

active

07939956

ABSTRACT:
A torsional protection system and method is provided for protecting a wind turbine from undesired torsional oscillations. The torsional protection system includes a detection processing stage that isolates energy contained within a measured signal to a frequency band of interest. An input to the detection processing stage is obtained from at least one component in the wind turbine. A protection logic stage compares the energy to a threshold level to get an indication of an amount of the energy that is above a predetermined threshold. The torsional content of the signal can be measured and monitored so that if the torsional content exceeds the predetermined threshold for a predetermined time an alarm or trip signal can be generated.

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