谐波条件下电能表计量误差自动识别研究  

Research on Automatic Identification of Metering Error of Watt-Hour Meter under Harmonic Condition

作　　者：王亚楠 WANG Ya'nan(State Grid Wuzhong Power Supply Company,Wuzhong,Ningxia 751100,China)

机构地区：[1]国网吴忠供电公司,宁夏吴忠751100

出　　处：《自动化应用》2023年第14期110-112,共3页Automation Application

摘　　要：以往的电能表计量误差自动识别方法无法消除谐波电能,导致电能表计量精确度不高。为此,在谐波条件下,本文设计了一种新的电能表计量误差自动识别方法,并通过无线传感器采集电能表计量数据,分析这些采集数据,计算电能表计量误差特征向量,确定对应计量值的误差值。随后通过增大负载阻抗,减小激磁阻抗,消除谐波电能对电能表计量误差的影响。在实验中,与以往的电量表计量误差自动识别方法对比,设计的电能表计量误差自动识别方法具有更高的计量精确度。The previous automatic identification method for metering errors in electricity meters were unable to eliminate harmonic energy,resulting in low metering accuracy.Therefore,under harmonic conditions,this article designs a new automatic identification method for metering errors in electric energy meters,and collects metering data from electric energy meters through wireless sensors,analyzes these collected data,calculates the characteristic vector of metering errors in electric energy meters,and determines the error value of the corresponding metering value.Subsequently,by increasing the load impedance,reducing the excitation impedance,and eliminating the influence of harmonic electric energy on the metering error of the electric energy meter.In the experiment,compared with the previous automatic identification method of metering error of electric energy meter,the designed automatic identification method of metering error of electric energy meter has higher metering accuracy.

关 键 词：谐波 电能计量 误差 自动识别 电能表 

分 类 号：TM933[电气工程—电力电子与电力传动]