一种简化DFT的滑窗迭代算法在电力谐波检测中的应用  

Application of Simplified DFT Sliding-window Algorithm for Power Harmonic Detection

作　　者：成剑[1] 罗安[2] 付青[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机测量与控制》2005年第8期771-774,共4页Computer Measurement &Control

基　　金：国家自然科学基金项目(60474041)。

摘　　要：文章介绍了一种在有源滤波控制器应用中基于简化离散傅立叶变换的谐波电流检测技术的设计和应用。为检测由非线性负载产生的谐波电流成分,运算过程中应用了滑窗迭代算法,它能有效地提高系统的实时性、目标跟随特性和抗干扰性,并且具有计算量小、容易工程实现的特点。该算法的有效性通过实验和仿真结果得到了证明。The design and implementation of a harmonic current computation technique for active power filter based on a simplified Discrete Fourier Transform is presented. The computation processing using a sliding- window iterative algorithm is applied for the detection of harmonic components generated by nonlinear current loads and it can efficiently calculate the instantaneous harmonic components in real time and improve its steady - state and dynamic performance. The characteristics of the proposed algorithm are small computation capacity and easy for engineering application. The validity of this algorithm is substantiated by practical and simulation results.

关 键 词：有源滤波 离散傅立叶变换 滑窗迭代算法 

分 类 号：TM711[电气工程—电力系统及自动化]