US 11,808,248 B2
Method and system for performing condition monitoring of wind turbine components
Margaret Paietta, Royersford, PA (US); and Gregory Wolfe, Royersford, PA (US)
Assigned to Fischer Block, Inc., West Chester, PA (US)
Appl. No. 17/437,516
Filed by Margaret Paietta, Royersford, PA (US); and Gregory Wolfe, Royersford, PA (US)
PCT Filed Feb. 18, 2021, PCT No. PCT/US2021/018449
§ 371(c)(1), (2) Date Sep. 9, 2021,
PCT Pub. No. WO2021/168030, PCT Pub. Date Aug. 26, 2021.
Claims priority of provisional application 62/978,043, filed on Feb. 18, 2020.
Prior Publication US 2022/0389912 A1, Dec. 8, 2022
Int. Cl. F03D 17/00 (2016.01); G01R 31/34 (2020.01)
CPC F03D 17/00 (2016.05) [G01R 31/343 (2013.01)] 82 Claims
OG exemplary drawing
 
1. A method for performing condition monitoring of a plurality of components of a plurality of wind turbines, the method comprising:
for each of the plurality of wind turbines, measuring at least one time-series electrical output signal of a generator of the wind turbine, each time-series electrical output signal representing an aggregate of a plurality of subset signals;
mathematically extracting one or more such subset signals from the at least one time-series electrical output signal of the generator;
associating one or more such subset signals with one or more wind turbine components;
determining a fault threshold value for each such one or more subset signals;
comparing the one or more such subset signals to such fault threshold value; and
determining the condition of such at least one wind turbine component of the plurality of wind turbines based on such association and comparison;
wherein comparing the subset signal to its fault threshold level includes calculating a health condition index, wherein calculating the health condition index includes comparing a number of standard deviations in which a value of the subset signal falls from a historical mean and a predetermined number of acceptable standard deviations from the historical mean, and wherein determining the condition of one or more wind turbine component includes outputting an alert when one or more such conditions exceeds a threshold value.