摘要
影响PCB型Rogowski线圈测量准确性的因素是多方面的,主要对位置误差和干扰磁场产生的误差进行了分析。PCB Rogowski线圈具有离散的特征,当一次导体偏离理想位置时会产生输出误差。建立了严谨的误差计算数学模型,推导出了一次导体偏离理想位置时的感应电动势的计算公式,分析了线圈结构对误差的影响并给出了控制误差的方法,同时对干扰磁场产生的误差进行了分析,结果表明PCB型Rogowski线圈基本不受外磁场的影响。论文对Rogowski线圈的优化设计和精确误差分析提供了理论基础。
There are many several aspects of influencing the precision of the PCB Rogowski coil,and the errors caused by primary conductor＇s position deviation and disturbance magnetic field are analyzed in this paper.The deviation from the central position of the primary conductor will cause errors due to the discrete characteristic of PCB Rogowski coil,and the precise math model for error computing is established and the formula of induced electromagnetic force when primary conductor deviates from the central position is derived.The influence of primary conductor position and coil construction on errors is analyzed,and based on the analysis,error controling method is given.The errors caused by disturbance magnetic field are analyzed and the result shows that the PCB Rogowski coil is basically not affected by external magnetic field.The paper provides the theoretical foundation for optimization design of Rogowski coil and precise error analysis.
出处
《电子测量与仪器学报》
CSCD
2011年第1期50-55,共6页
Journal of Electronic Measurement and Instrumentation
基金
湖南省科技重大专项(编号:2009FJ1014)资助项目
