基于FFT的风力发电机转子谐波分析方法研究  

An Algorithm for Harmonic Analysis of Wind Turbine Rotor based on FFT

作　　者：曹丽明 李娜 岳洁 CAO Liming;LI Na;YUE Jie(CRRC Yongji Eletric Company Limited,Xi'an 710000,China;PetroChina Coalbed Methane Company Limited,Beijing 100020,China)

机构地区：[1]中车永济电机有限公司,西安710000 [2]中石油煤层气有限责任公司,北京100020

出　　处：《大电机技术》2024年第2期9-13,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：为了准确测量风力发电机运行中转子的谐波电流参数,本文提出了一种基于汉宁窗的FFT风力发电机转子谐波参数测量方法。该方法对一个采样周期内电压电流数据的加窗FFT结果进行多项式变换,得到新的频谱序列,依据变换后的新频谱数据提取基波谐波参数。将其用于风力发电机转子谐波测量,并与横河功率分析仪测量参数进行对比,结果表明,该方法能够有效测量风力发电机转子谐波参数,与功率分析仪测量结果相比误差不超过1.5%,为谐波参数计算提供一种新方法。In order to accurately measure the harmonic current parameters of the wind turbine rotor,this paper proposes a FFT wind turbine rotor harmonic parameter measurement method based on Hamming window.The windowed FFT results of voltage and current data in a sampling period are polynomial transformed,the fundamental harmonic parameters are extracted according to the new spectral data after transformation.The method is applied to the harmonic measurement of wind turbine rotor.By comparing with the measured parameters of Yokogawa power analyzer,the results show that the method can effectively measure the harmonic parameters of wind turbine rotor and the error compared with the power analyzer is less than 1.5%,which provides a new solution for the calculation of harmonic parameters.

关 键 词：谐波检测 傅里叶变换 风力发电机 功率分析仪 

分 类 号：TM315[电气工程—电机]