中文摘要：

针对戴维南等值参数的在线跟踪提出了一种基于偏差量修正的迭代算法,并用一致性检验对初值进行选择。推导了估计参数的表达式及参数的修正量,根据实时变化的数据判断修正量的变化方向,并对参数进行迭代修正得出实时估计的参数值。同时计及了戴维南等值电阻的估计,使整个估计都在向量空间进行。算例结果表明,该方法能够快速有效地跟踪估计戴维南等值参数,并只需一个工频周期的采样值就能达到跟踪的效果。

英文摘要：

Based on the method for on-line tracking Thevenin equivalent parameters,an iterative algorithm using the deviation correction method is proposed and the initial value by consistency test is chosen.The expression and correction of estimate parameters are derived,the direction of the corrected value is judged according to the real-time changing data,and the iteration parameter estimation is obtained through iteration and correction.At the same time,the Thevenin equivalent resistance is concerned which makes whole estimation be conducted in vector space.The simulation results show that this method can quickly and efficiently track the estimated Thevenin equivalent parameters by only using one sampling frequency cycle.