A method and system for diagnosing abnormal drift of wind turbine power curve
A technology of wind turbines and power curves, which is applied in the monitoring of wind turbines, wind turbines, engines, etc., and can solve problems such as blade freezing, lack of rigor, and inability to respond to power curves
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[0020] A method for diagnosing the abnormal drift of the power curve of a wind turbine, comprising the following steps: collecting unit power data under different wind speeds; sorting the collected data according to the wind speed, and calculating the power drift area under the unit accuracy, and the calculation formula is: Among them, Δw is the difference of adjacent wind speed after sorting, Δw=w i+1 -w i , Δp is the power difference of adjacent wind speed points after sorting, Δp=p i+1 -p i , i is the data index number of the sorted wind speed and corresponding power, i=1, 2, 3...n; establish a diagnostic model, determine the diagnostic parameters, and determine the positive and negative warning lines and normal intervals according to the diagnostic parameters; The above calculation result is compared with the positive and negative warning lines. The more positive the warning line is, the diagnosis is that there is a problem with the wind speed measurement, and the more ...
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