Study On Modeling Simulation Of DFIG Wind Generator Based On Parameter Identification

In recent years, the wind power industry in our country has a rapid development,and the stability problems of grid brought by more and more large scale integratingwind power are more and more serious. However the simulation analysis technologyof wind turbines does not have a corresponding development with the wind industry,which will cause the analysis difficulties about the technology of the wind powerintegrating. This paper has a research on DFIG (Double-Fed Induction Generator),and proposes a wind turbine modeling method based on parameter identification, andthe main work is as follows:1Describe the types and characteristics of the wind turbine, and pay a attentionon the all kinds components of DFIG in the view of mathematical model. A detaileddescription of wind turbine in DIgSILENT software module has been introduced.2. Propose a simulation modeling method of wind turbine based on parameteridentification. Taking the effect of the wake and turbulence factors to wind farmssampled data into account, the reduction processing chain is designed to deal with thewind speed data. At the same time, according to the differences between actualperformance and theoretical performance of turbines, the operating efficiencycompensation coefficient is considered.3. With the help of wind farm sampling data, parameters of DFIG are identifiedbased on the parameter identification module built in DIgSILENT platform, and theefficiency of parameter identification module is verified with the actual sampled winddata in this paper.