谐波对感应式有功电度表计量误差的影响

建立一种感应式有功电度表在谐波电压和谐波电流状况下计算计量误差的非线性数学模型。用该模型可分析谐波对感应式有功电度表计量误差的影响。计量误差考虑了电度表电压线圈和电流线圈在不同的谐波次数以及谐波大小时的非线性效应。按照数学模型用Ｃ语言编制了程序，计算结果表明：输入电压和输入电流中的谐波会引起较大的电度表计量误差，实验结果也证明了这一结论。

INFLUENCE OF HARMONICS ON METERING ERROR OF INDUCTION WATT-HOUR METER

This paper presents a non linear frequency domain mathematical model by which the metering error under nonsinusoidal voltage and current can be calculated. This model can be used to analyze the influence of the input waveform distortions caused by harmonics on the metering error of induction water hour meter. The metering error considers the non linear effect of the voltage coil and current coil in watt hour meter under different order of harmonics and different distortion degree of input waveform. The test results show that whether the harmonics is involved in input voltage or in input current the metering error of watt hour meter should be considered.