电测与仪表2017，Vol.54Issue(20)：100-104,5.
基于全相位Fourier变换的电力系统相量测量新方法
A new vector measurement method for power system based on all-phase Fourier transform
罗蓬 1郝晓光 1李铁成 1王献志1
作者信息
- 1. 国网河北省电力公司电力科学研究院,石家庄 050021
- 折叠
摘要
Abstract
A novel vector measurement method for PMUs in power system is proposed in this paper, which is based on all-phase fast Fourier transform (apFFT). Due to excellent performance of apFFT in suppressing spectral leakage and the property of phase invariance, this method can realize the fast and accurate estimation of PMU phase angle, and then, the time-shift phase difference spectrum correction is adopted to estimate the frequency and amplitude parame-ters. The calculation flow of this algorithm is proposed, and the hardware of new PMU measuring device is designed based on ARM9 microprocessor. Simulation results show that the proposed method is close to unbiased estimation for noise-free case, and the algorithm in this paper can obtain 7dB signal-to-noise ratio gain compared with the conven-tional method.关键词
电力系统/相量测量单元/全相位快速Fourier变换/相位不变性Key words
power system/phase measurement unit (PMU)/all-phase fast Fourier transform (apFFT)/phase invari-ance分类
信息技术与安全科学引用本文复制引用
罗蓬,郝晓光,李铁成,王献志..基于全相位Fourier变换的电力系统相量测量新方法[J].电测与仪表,2017,54(20):100-104,5.
