电子式电能表谐波条件下电能计量影响分析与试验

Analysis and experiment of electrical watt-hour meter electric energy measuring under the condition of harmonics

近年来电网运行中大量非线性负载使用带来了大量谐波,使电力系统供电电压、电流波形发生严重畸变,影响了电子式电能表的电能计量结果。本文理论分析了在电力谐波存在情况下,电子式电能表的电能计量原理和影响,搭建了试验平台,采用典型的3种谐波试验波形作用于电子式电能表,得到了在正弦波条件下和在谐波条件下电能计量影响试验结果,试验结果和理论分析相互印证。

A large number of non-linear load were used in power network that brings a lot of harmonics in recent years, which leads to the power system serious distortion of voltage and current waveform and influences electronic watt-hour meter measurement results. The article analyzes electronic watt-hour meter measurement principle and influence under the condition of harmonics and sets up a test platform, using typical three kinds of harmonic waveform acting on elec-tronic watt-hour meter, The article got Electric Energy measurement results under the sine wave and the impact of har-monics conditions. The test results in accordance with theoretical analysis.