一种基于富氏滤波的电力系统频率测量算法

A Frequency Testing Simulation for Power System Based on Fourier Filter

基于正弦、余弦滤波器的输出提出了一种测量电力系统频率的新方法。该方法采用了一种简化处理方式以消除正弦、余弦滤波器幅值增益不同的影响，减小了计算量和响应时间，仿真结果表明，该算法不受电压过零点的影响，具有比较高的测量精度。

A new frequency testing method is proposed, which is for sine wave and cosine wave filter output. The method can eliminate influence of difference gain range of sine wave width and cosine wave width by simplifying treatment,thus less calculation is needed and responding time is reduced. Imitation conclusion shows that the calculation doesn't be influenced when voltage passes zero,and its test is more accurate.