电网技术2018，Vol.42Issue(2)：621-627,7.DOI:10.13335/j.1000-3673.pst.2017.0569
基于IEC 61850的数字化电能表用快速准同步谐波测量算法
Fast Quasi-Synchronous Harmonic Algorithm for IEC61850 Based Digital Energy Metering Devices
摘要
Abstract
According to requirements of IEC 61850-9-2 LE,digital energy metering devices mainly adopt fixed 8.0×fr sampling rate.When harmonic analysis is carried out with asynchronous sampling,it likely produces large errors due to spectral leakage.Quasi-synchronous algorithm has high accuracy,but its calculation process is complicated and its hardware expenditure is high.Based on the characteristics of digital energy metering devices,this paper puts forward an efficient quasi-synchronous harmonic algorithm using equivalent weighting window function combined with mixed radix fast Fourier transform algorithm.It reduces calculation amount by more than 90％.Compared with Triangle/Harning/ Nuttall4 (Ⅲ)-Windowed interpolated fast Fourier transform (FFT) algorithm,the proposed algorithm performs better in accuracy and hardware expenditure.关键词
谐波测量/非同步采样/加权窗函数/组合数FFT/硬件开销Key words
harmonic measurement/quasi-synchronous sampling/weighting window function/mixed radix fast Fourier transform (FFT)/hardware expenditure分类
信息技术与安全科学引用本文复制引用
肖勇,罗睿希,赵伟,江波,黄松岭,张翔..基于IEC 61850的数字化电能表用快速准同步谐波测量算法[J].电网技术,2018,42(2):621-627,7.基金项目
国家高技术研究发展计划(863计划)项目(2015AA050404).Project Supported by the National High Technology Research and Development Program of China (863 Program) (2015AA050404). （863计划）
