继电保护器中的谐波分析

摘要

This paper described the approach of power signal harmonic analysis in relay protection implement, derived the formula of windowed RIFI amplitude comparison.And for the signal characteristics of the power system and protection devices limitation, this approach was improved still further.The simulation image of error analysis was given and at last a comparison of the amplitudes of three spectral lines was made practically.%研究了在继电保护器中常见的电力信号谐波分析的处理方法,推导了在加窗情况下的RIFI幅值比较法的具体公式,并就电力系统这一信号特点以及继电保护器的局限性改进了这一方法,给出了具体的幅度误差分析仿真图并做出了比较.