基于FFT的电力系统谐波检测仪研制  

Development of harmonic detectors in power systems based on FFT

作　　者：冯宇深 毛谦敏[1] 金荣泰[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2013年第2期119-123,194,共6页Journal of China Jiliang University

摘　　要：为了准确地测量和分析电力系统中的谐波参数,在分析了常用的几种谐波测量方法的基础上,提出了一种基于FFT数字倍频整周期采样的电力系统谐波参数的测量方法.研制了以高性能ARM Context-M3内核的STM32微处理器为核心的电力系统谐波检测仪.检测仪具有测量基波和各次谐波的电压、电流绝对值的功能,并且能够测得谐波含有率、功率因数、功率和基波频率等其他参数,实现了对电力系统谐波参数的实时监控.To measure and analyze power system harmonic parameters accurately,we analysed several methods of harmonic measurement and put forward a novel harmonic measurement method based on FFT and full period sampling of digital frequency.Finally,we developed a harmonic detector with the STM32 chip,which had high-performance ARM Context-M3 cores.It could measure the absolute values of fundamental and harmonic and could also detect the parameters of harmonic ratio,power factor,and power fundamental frequency.The harmonic detector realizes the real-time monitoring of the parameters of power system harmonics.

关 键 词：谐波 快速傅里叶变换 数字倍频 整周期采样 

分 类 号：TM933[电气工程—电力电子与电力传动]