基于准同步采样法三相多功能电度表的研究  

Research of the three-phase multi-functional power meter based on the quasi-synchronous sampling method

作　　者：朱更军[1] 

机构地区：[1]浙江师范大学数理信息学院,浙江金华321004

出　　处：《微型机与应用》2012年第23期32-34,37,共4页Microcomputer & Its Applications

基　　金：浙江省科技计划项目(2008C21136)

摘　　要：分析了准同步采样法的基本工作原理,研究了为了减少编程计算量的准同步简化算法,以及为了提高准同步采样法准确度的变频率采样法。最后,把准同步采样法应用到三相多功能电度表中,实现了0.2S精度的三相多功能电度表的设计。实际测试结果表明,该表具有精度高、功能齐全及性能可靠等特点。This paper analyses the basic principle of the quasi-synchronous sampling. It studies the simplified arithmetic of quasi-synchronous sampling in order to reduce the programming calculation, and studies the frequency sampling method to improve the precision. Finally, it applies the quasi-synchronous sampling into the three-pimse muhi-fimctional power meter, realizes the design of the three-phase multi-functionM power meter with 0.2S precision. The result of the practical running testifies that it has the advantages of good precision, full ：function and high reliability.

关 键 词：电能表 DSP 准同步采样 0 2S精度 

分 类 号：TM933.4[电气工程—电力电子与电力传动]