便携式电流互感器变比测试仪的设计  

Design of Portable Ratio Tester for Current Transformer

作　　者：陈琼[1] 王磊[1] 

机构地区：[1]南昌航空大学,江西南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2009年第3期84-87,共4页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：南昌航空大学科研基金"基于DSP手持式多功能电量检测仪的研制"(EC200704034)

摘　　要：文章研制了适合户外在线检测的便携式电流互感器变比测试仪。该测试仪采用DSP技术及软同步采样和FFT处理方法获取电流基波之比,解决了谐波干扰引起的测量误差,实现电流变比实时高精度测量。该装置不仅可用于低压电流变送器变比测试,同时还可作为变更变比窃电的反窃电检查工具使用。A portable ratio tester for current transformer was developed. This tester is very suitable for outdoor online testing. It adopts DSP technology. The fundamental current waves＇ ratio is obtained by soft - synchronous - sampling and FFT, which can greatly decrease the measurement errors caused by harmonic interferences and realize the real -time high measurement precision. Besides the tester system can be used as current transformation for low voltage. Moreover, it can be used by the power station security system to prevent the illegal electricity users.

关 键 词：软同步采样 电流变比 数字信号处理 快速付里叶变换 

分 类 号：TM933.1[电气工程—电力电子与电力传动]