Wind Turbine Power Curve Drawing And Application Research

As one of the fastest growing clean energy sources in the field of new energy,wind power generation has got much attention.With the increasing capacity of single unit,the structure of wind turbine is also becoming more and more complicated.The condition monitoring and performance evaluation of large wind turbines are of great significance to the normal operation of the unit.In the process of wind power generation,the power curve of wind turbine reflects the operation state of wind turbine and the actual power generation capacity,which is an important indicator of the performance of the unit.This paper studies the method of high precision wind turbine power curve based on the operation data of large wind turbine.The main contents are as follows:Firstly,analyze the distribution of measured data recorded in SCADA system,and put forward the idea of method of grid.And filter out the abnormal data according to the distribution of data in the grid,retain the main data band which is more in accordance with the output characteristics of the wind turbine.Secondly,aiming at the exist of serrated bite marks in the main data band,propose a kind of data band smoothing strategy.This method complement the data on the edge of the grid based on the number and relative positions of the grid after data filtering to make the main data band more smooth,and enhance the accuracy of the power curve.Thirdly,analyze the discrete degree of the distribution of the data points in the coordinate system,using the complete vertical filtering and the segmented filtering to remove the abnormal points in the operating data,and compare the filtering effect.Finally,study the specific application of the power curve of wind turbine in the field of state monitoring and performance evaluation,and try to extract and establish the specific indicators that can characterize the performance of the unit.