It has been proved in practice that the unbalance degree of the three-phase side current of this transformer can meet the requirements of the related regulations.

实践证明，这种变压器三相侧电流的不平衡程度可以满足有关规定。

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Based on this requirement, this paper introduced the theory of power quality monitoring, include RMS of voltage and current, power, three-phase unbalance, harmonic and flicker.

在此基础上研究了电能质量监测理论，详细介绍了电压电流有效值、功率、三相不平衡度、谐波和闪变的数字测量方法。

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