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在试验的基础上分析了谐波对感应式电能表计量特性的影响。通过一系列谐波环境下感应式电能表计量数据的最小二乘分析,将误差来源分为3个方面：通过频率响应试验数据的分析,当频率不变、电压和电流的有效值不变、仅电压和电流的相位差（对应功率因数）改变时,其功率幅值（对应电能表最大计量值）随着谐波次数的增大而迅速减少,相对于基波的百分比及电压和电流的相位改变保持相对稳定;另外,谐波改变了基波电能的计量。“,”Experimental research has been conducted on the impacts of harmonics on induction watthour meter.The analysis of a series of experiments using the least square method（LMS） shows that the errors of an induction watthour meter in the presence of harmonics are attributed to three factors.Firstly,the frequency response test data LMS analysis concludes that when the frequency and valid value of voltages and currents are not changed,and only their phase difference（the power factor） varies,the power amplitude（the max registration） decreases with the increasing harmonic order,and keeps relatively stable versus the percentage of fundamental harmonic and phrase shift of voltages and currents;in addition,harmonics change the metering of fundamental harmonic power.