利用交流电直流分量对电网数据进行精确采集与仿真  

A accurate acquisition and simulation to the power grid data of using AC and DC component

作　　者：黄宁[1] 刘跃[1] 谭兴[1] 张仁红[1] 

机构地区：[1]贵州大学电气工程学院,贵州贵阳550001

出　　处：《现代机械》2014年第2期69-72,76,共5页Modern Machinery

摘　　要：本文提出了一种利用交流电的直流分量对电网数据进行采集的方法,通过算法论证和仿真结果实现了电网数据的精确采集。首先将三相电源的相电压信号（标准值为220 V/380 V、50 Hz）调理成小幅度的可以测试到的0～5 V交流电压;然后采用全波整流电路进行信号整流;再采用硬件滤波与软件滤波相结合的办法进行信号滤波;最终得出信号的直流分量。并根据电路搭建了仿真模块,从实验平台来验证了理论的可行性和准确性。This paper presents a acquisition method to the DC component of grid data by using alternating current, The algo- rithm and simulation results achieved grid data accurately. Firstly, the phase voltage signal of three - phase power （standard values for 220V/380V, 50Hz） regulate into small amplitude and 0 ~ 5V AC voltage which could test to,then use the full wave rectifier circuit for signal rectification ; and use the method of combining hardware filter and software filter for signal ill- tering; finally get DC component of the signal. According to the circuit this paper built simulation module, and verify the feasibility and accuracy of the theory from the experimental platform.

关 键 词：数据采集 智能化 信号调理 Multisim11 

分 类 号：TM73[电气工程—电力系统及自动化]