电流互感器误差的数字补偿算法

Digital Compensation Algorithm of Current Transformer Error

分析了电流互感器的误差及产生的原因,由于电流互感器一次侧电流变化范围较大使得测量精度进一步下降,利用单片机及数字信号处理器的强大功能,提出了电流互感器误差的数字补偿算法,来提高其测量精度。通过实验计算分析,该数字补偿算法可较大提高互感器精度。

Analysis was made to the current transformer error and its cause.Large current range at primary side of current transformer made the accuracy of measurement decreased further,so the digital compensated algorithm of current transformer error was set forth to raise the accuracy of measurement with the high speed digital signal processor and single-chip microcomputer（SCM）.Through the experimental calculation and analysis,this digital compensated algorithm can improve the accuracy of current transformer.