其中：b0=1;b1=5/3;b2=20/21;b3=5/14;b4=10/126;b5=1/126;本发明实现简单，能够在实际应用中达到很高的精度，计算量比一般的余弦窗小。 ">

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CN103197141A 一种测量电力系统信号频率及谐波参数的方法 无效 - 撤回

一种测量电力系统信号频率及谐波参数的方法
摘要：
本发明涉及一种测量电力系统信号频率及谐波参数的方法，通过对采样数据加6项Rife-Vincent（I）窗的FFT数据中真实频率点附近的2根最大的谱线进行修正，从而得到谐波的频率，幅值和相位，所述的6项Rife-Vincent（I）窗W(n)为： 其中：b0=1;b1=5/3;b2=20/21;b3=5/14;b4=10/126;b5=1/126;本发明实现简单，能够在实际应用中达到很高的精度，计算量比一般的余弦窗小。
摘要（英）：

The invention relates to a method of measuring electrical power system signal frequency and harmonic wave parameters. Modification is conducted on two maximal spectral lines close to a real frequency point in FFT data, comprising six items of Rife-Vincent (I) windows, of sampling data, therefore frequencies, amplitudes and phases of harmonic waves are obtained, and the six items of Rife-Vincent (I) windows W (n) satisfy the equations that b0=1; b1=5/3; b2=20/21; b3=5/14; b4=10/126; and b5=1/126. The method is simple to achieve, and can achieve high accuracy in actual application, and calculating quantity is smaller than that of common cosine windows.

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