应用多种高精度测量机制的电参量分析仪研制  

Development of electrical parameter analyzer using different high precision testing methods

作　　者：曾舒帆[1] 张绍旺[1] 李亚娟[1] 饶杰[1] 何洪伟[1] 牛跃宏[1] ZENG Shufan;ZHANG Shaowang;LI Yajuan;RAO Jie;HE Hongwei;NIU Yuehong(Yunnan Institute of Metrology And Testing Technology,Kunming 650228,China)

机构地区：[1]云南省计量测试技术研究院

出　　处：《中国测试》2019年第9期94-99,共6页China Measurement & Test

基　　金：国家质检公益性行业专项(201410133)

摘　　要：针对计量测试过程中高精度电参量分析的需求,该文提出多种改善分析测量精度的测量机制,包括高精度交流电压采样分压器、高精度改进型双级交流电流互感器、利用DDS实现准同步采样原理进行信号频率跟踪实现同步采样以及非整周期傅里叶补偿谐波算法。并将这些测量方法应用到分析仪的研制设计中,实现电参数测试准确度优于0.01%、谐波分析准确度优于0.02%的高精度电参量分析仪。In order to meet the need of high precision electrical parameter analysis in measurement,this paper proposes several meas-urement mechanisms to improve the accuracy of analysis and measurement,including high precision AC voltage sampling divider,high precision improved two-stage AC current transformer,and using DDS to realize quasi-synchronous sampling principle to track signal frequency and realize synchronous sampling.And non-integral period Fourier compensation harmonic algorithm.These measurement methods are applied to the development and design of the analyzer.Accuracy of electric parameter test is better than 0.01%,and accuracy of harmonic analysis is better than 0.02%.

关 键 词：电参量分析 m-n型同轴电压分压器 非整周期傅立叶补偿算法 同步采样 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]