三相无功功率测量的方法及误差分析

The Methods and Error Analysis of ThreePhase Reactive Power Measurement

对高精度Ａ／Ｄ型静止式复费率电能表中测量三相无功功率的几种方法做了比较分析，提出了应用注意事项．

This paper studies and analyses some methods which are used to measureg threephase reactive power in high precision A/D transformation multifee efficiency electrical energy meter. In addition it mentions some cautions in using.And it puts forward a new method of using digital phaseshift technique to improve precision of reactive power measurement.