采用Prony算法的谐波和间谐波分析  

Analysis of Harmonic and Inter-harmonic Based on the Prony Algorithm

作　　者：常晓颖[1] 吴茜琼[1] 

机构地区：[1]洛阳理工学院电气工程与自动化系,河南洛阳471023

出　　处：《低压电器》2011年第6期38-41,共4页Low Voltage Apparatus

摘　　要：传统的谐波检测方法——快速傅里叶变换存在栅栏和频谱泄露现象,因而对谐波和间谐波信号不能实现精确的检测。采用扩展Prony算法检测信号的谐波和间谐波,能一次性精确地检测到整数和非整数次谐波的相位、振幅、频率,为电力系统整次和非整次谐波检测提供了一条新的途径。数值仿真验证了该算法的有效性。The traditional method of harmonic detection—fast Fourier transform could not be used to accurately detect harmonic and inter-harmonic due to its leakage and picket fence effects.Prony algorithm was used to detect the harmonic and inter-harmonic.It could accurately detect phases,amplitude and frequencies of integer and non-integer harmonics,which provided a new detection method for power systems.The effectiveness of the proposed al-gorithm was verified by simulation results.

关 键 词：PRONY算法 谐波 间谐波 信号分析 参数辨识 

分 类 号：TM935[电气工程—电力电子与电力传动]