改进型低通滤波器在可变谐波源负载谐波检测中的应用探究  

Application Exploring on Variable Harmonic Sources Load Detection Using Improved Low-Pass Filter

作　　者：张永强[1] 宋微浪[2] 高新杰 

机构地区：[1]山西电力公司太原供电分公司,太原030012 [2]福州大学电气学院,福州350108 [3]漳泽电力蒲洲发电分公司,山西运城044500

出　　处：《电力学报》2010年第6期475-479,共5页Journal of Electric Power

摘　　要：分析了瞬时无功功率法的数学模型,并针对其在谐波检测跟踪速度及精度上的缺陷,对传统的低通滤波器进行了改造,提出平均值滤波法模型,以此来提高谐波检测质量及速度。在Matlab/Simulink下搭建改进的基于平均值滤波器的数学模型,并将该模型成功应用到经典的三相整流桥电路中,并同时测试了负载源突变的情况下谐波跟踪的性能,仿真结果及分析表明,基于本文提出的改进的模型是正确而可行的,研究成果在工程上有一定的实际参考和应用价值。The traditional Low-pass filter has the defects of Harmonic detecting speed and precision.To improve the quality and speed of harmonic detection,an averaged filter model was proposed by analyzing the instantaneous reactive power model and reforming the traditional Low-Pass Filter.This model was built based on Matlab/Simulink system and applied into the classic three phase bridge rectifier circuit successfully.Its performance was tested on the case of load abrupt change.The results and analysis indicate that the improved model is accurate and workable.The research is valuable for engineering practice.

关 键 词：瞬时无功功率法 低通滤波器 平均值滤波法 谐波检测 三相整流桥电路 

分 类 号：TN713.4[电子电信—电路与系统]