摘要
高电压、大容量的冲击性设备的广泛应用,导致电力系统中呈现大量谐波,对电能计量提出了新的要求,采用快速傅立叶变换(FFT)进行谐波分析存在较大的泄漏误差,本文对FFT的泄漏误差进行了分析并对FFT的结果进行修正,提高了计算精度,修正后的算法适用于电力系统谐波分析与电能计量。
the widely use of impact loads with high-voltage and high-capacity has caused a large number of harmonics which raises new demands for energy measurement.The FFT has a high error in the harmonic analysis.This paper discuss the leakage of FFT and amend the result of FFT.The algorithm after amending obviously improves the accuracy of the FFT,and it could be applied to the harmonic analysis of power system and precision measurement of electrical energy.
出处
《微计算机信息》
2012年第1期135-136,158,共3页
Control & Automation
关键词
谐波
快速傅立叶变换
电能计量
Harmonic
FFT
measurement of electrical energy
