霍尔传感器的角差对功率测量的影响  

Influence of Holzer Sensors' Angle Difference on Power Measurement

作　　者：李庆莲 雷民[2] 徐伟专[3] 

机构地区：[1]湘电集团有限公司,湖南湘潭411101 [2]中国电力科学研究院,武汉430074 [3]国防科学技术大学,长沙410073

出　　处：《电测与仪表》2014年第20期95-98,128,共5页Electrical Measurement & Instrumentation

基　　金：2012年公益性行业科研专项经费资助项目(201210037)

摘　　要：角差是互感器准确度指标的重要组成部分,是影响功率测量准确度的主要因数之一。然而,在变频电机、变频器、逆变器等的功率测量中,由于目前广泛使用的霍尔电压、电流传感器一般不标称角差指标,传感器的角差指标往往被忽视。通过对LEM公司的LV100-4000型霍尔电压传感器进行大量的试验和分析,计算得到其相位误差值,与由传感器标称上升时间推导得出的角差指标基本相符。在此基础上提出了霍尔电压传感器角差的估算公式,并按照公式给出了常用霍尔电压传感器的角差参考值。Angle differenceis an important part oftransformer accuracy performance,and is one of the mainfactors influ-encing power measurement accuracy. However,in power measurement such asinverter motors,transducers and invert-ers,the angle errorof the sensoris often ignored,because the nominalangle errors of widely used Holzervoltage and cur-rent sensorsarenot givenin general. Through a large numberof testsbased onLEM’s LV100-4000 typeof Holzervoltage sensor,thephase erroris analyzed and calculated. The result is basically consistent with the angle difference derived fromthe nominalrise timeof the sensor. Based on the result,the angle difference estimation formula for theHolzervoltage sensoris presented,and the referencevalue ofangledifference for common Holzervoltage sensors is given according to the formula.

关 键 词：霍尔电压传感器 霍尔电流传感器 角差 功率因数 

分 类 号：TM933[电气工程—电力电子与电力传动]