高精度标准电能表设计方法  

Design of High-precision Reference Energy Meter

作　　者：王新金[1] 毛晓波[2] 陈铁军[2] 

机构地区：[1]郑州轻工业学院电气信息工程学院,郑州450002 [2]郑州大学电气工程学院,郑州450001

出　　处：《电测与仪表》2009年第9期49-52,75,共5页Electrical Measurement & Instrumentation

基　　金：河南省杰出人才创新基金(521000100);河南省自然科学基金(0611052900);河南省教育厅自然科学研究计划(2009A410001)

摘　　要：介绍一种高精度、多功能三相标准电能表的设计方法。采用硬件锁相环电路,控制单片6通道16位高速并行A/D转换器ADS8364实现对三相电压、三相电流同步整周期均匀采样。TMS320F2812DSP对采集的三相电压、电流数据进行运算和处理,并用软件方法产生高低频标准电能脉冲。给出了系统总体结构、模拟通道设计、倍频锁相电路、数据采集电路、各种电参数测量算法及系统软硬件抗干扰措施。主要指标的准确度等级优于0.05级。其设计方法对于高精度电力测量仪表的研制具有实际参考价值。Design method of high-precision, multi-functional three-phase reference energy meter is introduced. A hardware phase-locked loop circuit is used to control 6 channels 16 bits high-speed parallel interface converter ADS8364, realize the function of synchronous and full period collection of three-phase voltage and current. TMS320F2812 DSP processes and analyzes the acquired voltage and current data and generates standard electric energy pulses using software. The system hardware structure, analog channels circuits, data acquisition circuits, measurement algorithms of electric parameters and anti-jamming methods are given. Measuring accuracy grades of main parameters excelled 0.05%. Its design method has practical reference values for high-precision electrical measuring equipments.

关 键 词：标准电能表 同步采样 锁相环 ADS8364 TMS320F2812 

分 类 号：TM933[电气工程—电力电子与电力传动]