CAJ | 학술논문

采样的方法已经广泛的应用在功率测量中，为了实现对功率的准确测量，需要对数字采样卡性能进行评估。为测量采样卡的采集通道相角差和幅值，本文做了相应的实验。基于DFT变换对实验数据进行处理和分析得到了相角差和幅值，并采用通道互换的方法减小了通道间的相角差。实验结果表明采样卡性能满足功率测量中的要求，用采样来进行功率测量的方法是能很好的解决功率测量中电流电压信号之间相角的测量问题，从而提高功率测量准确性。
채양적방법이경엄범적응용재공솔측량중，위료실현대공솔적준학측량，수요대수자채양잡성능진행평고。위측량채양잡적채집통도상각차화폭치，본문주료상응적실험。기우DFT변환대실험수거진행처리화분석득도료상각차화폭치，병채용통도호환적방법감소료통도간적상각차。실험결과표명채양잡성능만족공솔측량중적요구，용채양래진행공솔측량적방법시능흔호적해결공솔측량중전류전압신호지간상각적측량문제，종이제고공솔측량준학성。
Sampling method has been widely used in power measurement currently, in order to achieve accurate meas-urements of the power, the performance of the digitizer need to be evaluated. Experiments have been made to measure the phase difference and amplitude of the digitizer. DFT algorithm is used to process and analyze the experimental da-ta, and the channel swap method is used to reduce the phase angle difference between two channels. The results show that the performance of digitizer can meet the requirements of power measurement well. This method of power meas-urement is a good solution to the problem of measuring the phase angle between the current signal and voltage signal, thereby increasing the accuracy of power measurement.