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

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.