一种高精度功率测量的补偿方法  

A High-precision Measurement Method of Power Compensation

作　　者：张先庭[1] 张永亮[1] 叶爱华[1] 

机构地区：[1]南昌航空大学,南昌330063

出　　处：《电测与仪表》2009年第4期6-9,共4页Electrical Measurement & Instrumentation

摘　　要：本文介绍了交流同步采样的原理和有功功率、无功功率计算方法;分析了高精度功率测量的误差来源。对于相移的非线性误差,通过多项式曲线拟合得到了误差模型并提出了选取曲线拐点作为相移分段线性化校正方法。介绍了功率测量中相移补偿的方法并给出了功率补偿的步骤。最后,通过研制的三相交流在线测试仪验证了该方法的正确性。In this paper, the principle of AC synchronization sampling and the calculate methods of active power and reactive power are introduced; the error source of high-precision power measurement is analyzed; To the nonlinear error of phase deviation, an error models is established by fitted polynomial curve and a segment linearization correction method for phase deviation is presented by choosing the turning points of the curve. Method of phase deviation compensation on power measurement is brought forward and the process of power compensation is given. Finally, the correctness of has been validated by the three-phase AC on-line tester developed.

关 键 词：功率测量 线性补偿 相移补偿 

分 类 号：TM933[电气工程—电力电子与电力传动]