带畸变负载变压器谐波损耗的简易数字测量法

Easy digital measurement of harmonic losses in transformers supplying distorting load

介绍了供给非正弦负载变压器谐波损耗的简易数字测量方法: 仅用与变压器输出端电压、电流工频分量相对应的有功功率P21和传输给负载的有功功率P2 间的差值来表示变压器中的谐波损耗, 不必使用高压侧的传感器, 且P21和P2都是从处理相同数字信号的同一仪表中获取, 因此该测量方法不仅简单易行, 而且测量结果更加准确。

This paper describes a simple digital measurement of harmonic losses in transformers supplying the distorting load.The method only uses the difference between the fundamental active-power P_(21) measured in output terminal and P_(2) delivered to the load, also measured in output terminal,to express harmonic losses in transformers,and so high-voltage transducers are not necessary.Moreover,both P_(21) and P_(2) can be obtained from the same instrument processing the same digital signal.Therefore,the method is not only easy and simple in implementing,but also more accurate in its measurement results.