摘要
在当前的工业部门和用电设备中,电力电子技术得到了广泛的应用,导致电力系统中的非线性负载的比重增大,电网的谐波污染程度增加,电流和电压发生严重畸变,较大的影响了电能质量,同时也对电能计量带来了较大的负面影响。本文针对谐波对电能计量的影响进行研究,从谐波在电网中流动的理论和电能计量标准出发,分别探讨了谐波对感应式电能表和电子式电能表的影响,最后给出了提高测量精度的相关策略。
Currently,power electronic technology has been widely used in industrial sector and power equip-ment.This results in the proportion of nonlinear loads in power system increasing.And power grid harmonic pollution levels increases.All of these largely influence the power quality.At the same time,electric en-ergy metering is affected.In this paper,the influence of harmonics on electric energy metering is studied. Based on the theory of harmonic in power grid flow and energy measurement standard,the influence of har-monics on induction watt-hour meter and electronic watt-hour meter is respectively discussed. Finally,some strategies to improve the measurement accuracy are given.
出处
《电子测试》
2013年第10X期49-50,共2页
Electronic Test
关键词
谐波
电能计量
电能表
harmonic
power metering
watt-hour meter
