相位角表法的分析与应用

Analysis and Application of the Phase Angle Table

针对互感器极性错误时,会使线电压和相电流夹角直接发生变化,从而影响到功率表达式的计算,在介绍三相三线两元件电能计量装置接法的前提下,分别分析了电压互感器极性正确与错误时的向量图,对应给出了不同的相位角表,可不用画向量图直接列出功率表达式。

The angle between line voltage and phase current will change when the TV transformer polarity is wrong. It also impacts the calculation of power expression. Three phase two element of the electric energy measure device is introduced, and different phase angle tables according to different TV transformer polarity is analysed. So the power calculation expression can be listed directly without the phasor diagram.