基于数字化计量体系的有限字长效应分析

摘要

随着数字化变电站的迅猛发展,数字化电能计量将得到更广泛的应用.基于数字化计量体系下的有限字长效应会对测量结果产生误差,本文分别对A/D转换量化误差、滤波器系数量化误差和运算量化误差进行了探讨,并结合MATLAB综合分析了这些影响因素对整体计量准确度的影响.%With the rapid development of digital substation, digital metering is getting more and more wide application in China.Based on finite word length effect in digital substation system, this paper explores the errors caused by the quantization of AD conversion, filters coefficients and digital operation, and combined with MATLAB, the paper makes a comprehensive analysis of the influence of these factors on overall metering accuracy.