摘要
针对电能质量分析问题,设计了基于DSP和CPLD的电能质量检测装置,完成对电网信号数据的实时采集和处理,介绍了系统的总体结构以及数据处理的方法。为消除泄漏误差,采用锁相环电路实现对电网信号的同步采样。为提高计算的准确性,采用基于加窗插值的FFT算法分析电力系统谐波,并对算法的实现进行了详细的描述。
In this paper,a system based on DSP and CPLD is developed in order to analyze the power quality. The overall design of this system and the means of data processing are introduced. Due to the error of nonsynchronous sampling, the method of synchronous sampling based on PLL is applied. In order to improve accuracy of calculation, FFT algorithm based on window function and interpolation is used to analyze harmonic of the power systems. Finally, the realization of the algorithm is described in detail.
出处
《现代电子技术》
2006年第23期145-147,共3页
Modern Electronics Technique
关键词
同步采样
FFT
加窗插值算法
数据采集
synchronous sampling
FFT
window function algorithm
data acquisition
