交流阻抗及功率因数测量中偏差的修正

The error correction in the measurement of impedance and power factor

介绍了在交流阻抗及功率因数测量中由测量仪表引起的偏差的修正方法.主要讨论了一级修正和精确修正两种方法,导出了计算复阻抗和功率因数的修正式.给出了测量日光灯电路的阻抗及功率因数的实例.由计算结果可以看出,精确修正后的结果与不做修正的结果之间存在较大的差异,说明在要求较精确测量的情况下,应该对测量结果进行修正.

The error correction method in the measurement of impedance and power factor is introduced.Both the primary correction method and the accurate correction method are discussed mainly and the modified formula for calculating the impedance and power factor is obtained.An example for measuring the impedance and power factor of the fluorescent lamp circuits is shown.It is seen from the results that there is a large difference between the results of the accurate amendment and the uncorrected case,so a more accurate measurement is required,then the measurement results should be corrected.