基于DSP的谐波检测系统研究  

Research on the harmonic detection system based on DSP

作　　者：马兴[1] 李捍东[1] 

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025

出　　处：《自动化与仪器仪表》2015年第6期126-128 132,132,共4页Automation & Instrumentation

摘　　要：为了解决电网中谐波含有率大而导致的电压、电流正弦波形严重畸变的电能质量问题,研究设计一套基于TMS320F28335芯片的精确度高、识别定位速度快,包含谐波检测仪、上位机组态监控界面及数据库的谐波检测系统。谐波分析算法采用FFT联合小波包变换的综合谐波检测方法,克服了频谱泄露和栅栏效应造成的误差,以及运算量大造成的识别定位速度慢的问题。通过测试,系统可以满足谐波检测对精确度、实时性以及稳定性的要求。To solve harmonic containing rate caused by voltage and current sine wave of serious distortion of power quality problems, research and design a set of based on TMS320F28335 chip of high accuracy, fast speed for recognition and localization,and contains harmonic detector, PC configuration monitoring interface and several according to the library of harmonic detection system. Problems in harmonic analysis algorithm using FFT and wavelet packet transform of harmonic detection method, which overcomes the error caused by the spectrum leakage and fence effect and large amount of computation caused by identification and positioning speed slow. Through testing, the system can meet the requirements of accuracy, real-time and stability of the harmonic detection.

关 键 词：电能质量 谐波检测系统 TMS320F28335 FFT 小波包变换 

分 类 号：TM935[电气工程—电力电子与电力传动]