Analysis of turbine-grid interaction of grid-connected wind turbine using HHT

2018 7th International Conference on Clean and Green Energy

能源学;生态环境科学

Chen, A.^1 ; Wu, W.^1 ; Miao, J.^1 ; Xie, D.^1

Department of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China^1

关键词: Empirical Mode Decomposition;    Grid connected wind turbine;    Grid interaction;    Hilbert Huang transforms;    Hilbert transform;    Instantaneous amplitude;    Intrinsic Mode functions;    Vibration functions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/154/1/012013/pdf
DOI  :  10.1088/1755-1315/154/1/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper processes the output power of the grid-connected wind turbine with the denoising and extracting method based on Hilbert Huang transform (HHT) to discuss the turbine-grid interaction. At first, the detailed Empirical Mode Decomposition (EMD) and the Hilbert Transform (HT) are introduced. Then, on the premise of decomposing the output power of the grid-connected wind turbine into a series of Intrinsic Mode Functions (IMFs), energy ratio and power volatility are calculated to detect the unessential components. Meanwhile, combined with vibration function of turbine-grid interaction, data fitting of instantaneous amplitude and phase of each IMF is implemented to extract characteristic parameters of different interactions. Finally, utilizing measured data of actual parallel-operated wind turbines in China, this work accurately obtains the characteristic parameters of turbine-grid interaction of grid-connected wind turbine.