利用递推最小二乘算法测量电力系统频率

USING RECURSIVE LEAST SQUARE ALGORITHM TO MEASURE FREQUENCY OF POWER SYSTEM

本文根据递推最小二乘算法，从受到干扰污染的输入信号中估计基波电压，利用电压相角变化来测量电力系统频率、电压幅值及两电压间的相位差，同时通过自适技术调整采样间隔，不仅提高了频率测量的精度，也加快了算法的收敛速度，减小了计算量。

In this paper a method of estimatingfundamental voltage from polluted input signals ac-cording to recursive least square algorithm is intro-duced.Using the change of voltage phase angle,thefrequency,the voltage amplitude and the phase differ-ence between two voltages can be measured.Not onlythe accuracy of measurement is improved, but also thespeed of convergence is accelerated by adaptive sam-pling