基于全相位数据处理的数字电能计量算法

数字化电能表在实际工程应用中时常出现误差超差现象,其主要原因之一是现有的数字电能算法的现场适应能力较差。为此本文分析了几种典型的数字化电能表误差影响因素,提出了一种基于全相位数据处理的数字电能计量算法,将全相位数据处理方法与DFT算法结合,并通过插值算法使得全相位数据处理方法具有了更强的频率适应性。仿真结果验证了本文提出的数字电能算法能有效抑制频谱泄露。与主流厂家的同类产品进行的对比试验表明,该算法具有更强的复杂工况适应能力,能够在复杂工况下准确计量电能。

Digital energy metering algorithm based on all-phase data processing

The multiple error of digital energy meter was found out of range constantly in the process of application, one of the main reason is that the poor suitability of existing digital energy algorithm. In this paper, several error factors have been analyzed, and a new digital energy metering algorithm based on all-phase data processing has been proposed. This algorithm combines traditional DFT with all-phase data processing, and enhances the frequency adaptability of all-phase data processing. The simulation results verify that this algorithm can suppress the spectrum leakage. Compared with similar products of mainstream manufacturers, it can be seen that this algorithm has better adaptability than others, it can be used to measure energy in complex conditions.