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文中给出了便于由三相三线制不对称系统中线电压、线电流的实测值查取其正、负序分量的曲线图表。同时还提出了测量正、负序功率分量之差的“四乏尔表法”。因正、负序功率分量之和可由通常采用的“二瓦特表法”获得,于是正、负序功率分量即可析离开来。
In this paper, a curve chart is provided to find the positive and negative sequence components of the measured values of the line voltage and line current in a three-phase three-wire asymmetric system. At the same time, a “Four-Hour Watch” is also proposed to measure the difference between the positive and negative sequence power components. Because positive and negative sequence power components and can be used by the commonly used “two watt meter method” to obtain, so positive and negative sequence power components can be separated.