基于交流采样的电力系统频率测量的滤波器设计

Filter design of frequency measurement for power system based on AC sampling

提出了交流采样中用于电力系统频率测量的FIR滤波器的设计方法 ,该方法通过设计两个在工频范围内幅值增益变化很小的正交线性相位FIR滤波器计算频率 ,仿真结果表明 ,该方法计算简单 ,且具有较高的测量精度。

The method of FIR filter design for calcuating frequency in power system is presented.In this method the two quadrature FIR filers are designed to calculate frequency whose amplitude gain variation are very small and phases are linear.The simulating result shows the method is simple and precision.