电力系统谐波抑制仿真研究  

Simulation Research on Harmonic Suppression in the Power System

作　　者：施滨 郑全新[1] SHI Bin;ZHENG Quanxin.(Jingchu University of Technology,Jingmen,Hubei Province,448000 China)

机构地区：[1]荆楚理工学院,湖北荆门448000

出　　处：《科技资讯》2023年第20期54-57,共4页Science & Technology Information

摘　　要：利用傅里叶转换与FTT转换技术对所建立的谐波模型进行了模拟,发现利用FTT的时频特征可以提取出该信号的时间-频率特征,能够有效地消除干扰,并能有效地探测出信号的频域特征,而傅里叶转换则能有效地反映出信号的频域特征。将傅里叶分析与FTT分析相比较,将其优点相融合,利用小波分析法对信号中的突变点进行了提取和除噪,再利用傅氏转换对各个稳态的频域和振幅进行精确的检测。Fourier transform and FTT transform techniques are used to simulate the established harmonic model,and it is found that the time-frequency characteristics of the signal can be extracted by using the time-frequency characteristics of FTT,which can effectively eliminate interference and effectively detect the frequency domain characteristics of the signal,and that Fourier transform can effectively reflect the frequency domain characteristics of the signal.Fourier analysis is compared with FTT analysis,their advantages are fused,the abrupt points in the signal are extracted and denoised by wavelet analysis,and the frequency domain and amplitude of each steady state are ac‐curately detected by Fourier transform.

关 键 词：谐波干扰检测傅里叶变换 小波变换 抑制 仿真 

分 类 号：TM761[电气工程—电力系统及自动化]