电能质量测量的数据采集A/D转换器选择

【作者】 潘小波； 吴彩林；

【机构】 安徽工业大学 职业技术学院；

【摘要】 当今社会对电能质量的要求越来越高,国家还专门制定了电能质量的国家标准.因此,电能质量的测量越来越得到电力用户的重视。电能测量时,从电网的数据采集结果对其精度的影响起着至关重要的作用,而这其中影响最大的是模数转换器(ADC),往往 A/D 芯片的技术参数和指标就决定了整个数据采集系统的性能指标.本文从 ADC 的技术参数、采样误差和采样方法几个方面综述了电能测量中 ADC 的选择,最后根据自己的经验简介了两种 A/D 转换芯片.更多还原

【Abstract】 Social is more and more high to the request of the electric powers quality nowadays,the nation still draws up the national standard of the electric power quality exclusively.Therefore,the measure of the electric power quality gets the value of the electric power customer more and more.When measuring the electric power,the result of data-acquisition from the electricity net has an important influence to the accuracy,but the biggest influences among them is the mold number conversion machine(ADC),usually the technique parameter and index sign of the A/D chip comes to a decision to the function index sign of the whole data-acquisition system.This paper overviews the ADC choice of the electric power measure from the ADC technique parameter,sample error margin and sample method,finally, briefly introduces two kinds of A/D conversion chip based own experience.更多还原