Application method and system of twin power curve model of wind generating set

Abstract

The invention discloses an application method and system of a twin power curve model of a wind generating set. The method comprises the following steps: acquiring a measured power curve, curve parameters and curve characteristics of the wind generating set; constructing a twin power curve model of the wind generating set, wherein the twin power curve model comprises twin curve parameters corresponding to the curve parameters and twin curve characteristics corresponding to the curve characteristics; fitting a twinning power curve expressed by a function according to the measurement power curve;a twin power curve is used to replace a measurement power curve for power calculation and engineering application. According to the method, the calculation method of the theoretical power of the windgenerating set in practical engineering application is advanced from an interpolation method to a function method, and a brand-new foundation is laid for efficient computer programming, big data analysis and application of an artificial intelligence technology. Meanwhile, the performance difference between the wind generating sets can be visually reflected by comparing the twin rated wind speedsof the wind generating sets of different types.

Description

technical field [0001] The invention relates to the field of engineering technology, in particular to a method for establishing a twin power curve model of a wind power generating set, and a twin power curve fitting and application method. Background technique [0002] The traditional wind turbine power curve is represented by a finite set of points corresponding to the measured wind speed and power, that is, the measured power curve, which includes characteristic values ​​such as cut-in wind speed, rated wind speed, cut-out wind speed, and rated power. The measured power curve has the following characteristics: when the wind speed is less than or equal to the cut-in wind speed, the power is zero; when the wind speed is greater than or equal to the rated wind speed, the power is the rated power; when the wind speed is greater than or equal to the cut-out wind speed, the power is zero; Time, the relationship between wind speed and power is a curve connected by some line segme...

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Problems solved by technology

[0006] The present invention proposes a twin power curve model of a wind power generating set represented by a function, and uses the model to fit the twin power curve, and uses the twin power curve to replace the engineering application method and system of the measured power curve, which solves the problems in the prior art Since the wind speed is between the cut-in wind speed and the rated wind speed, the relationship between the wind speed and the power is a curve connected by some line segments, the interpolation method is used to calculate the theoretical power, and the calculation amount is relatively large

The rated wind speed of the measured power curve and the rated wind speed of the designed power curve sometimes deviate greatly, and the rated wind speed of the measured power curve cannot reflect the performance difference of the power curve

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