电测与仪表2018，Vol.55Issue(5)：22-27,6.
一种基于自适应滤波器的改进ip-iq无功电流检测方法
An improved ip-iq reactive current detection method based on adaptive filter
摘要
Abstract
There is a contradiction between response speed and detection accuracy in the traditional ip-iq reactive current detection method.In view of this,a variable step size least mean square (LMS) adaptive filter is proposed to detect the reactive current other than the traditional low pass filter.Lorentzian function is introduced to the adaptive filter to adjust the step size.First of all,the characteristics of the step adjustment are analyzed.Then,the whole reactive current detection method is analyzed by MATLAB simulation and DSP experiment.The simulation and experimental results show that,compared with the traditional ip-iq method and other kinds of ip-iq methods based on variable step size adaptive filter,the operation speed of the proposed method is the fastest,and this method has the characteristics of fast dynamic response and high precision.关键词
无功电流检测/ip-iq/自适应滤波器/洛伦兹函数Key words
reactive current detection/ip-iq/adaptive filter/Lorentzian function分类
信息技术与安全科学引用本文复制引用
孙曙光,刘建强,杜太行,刘旭林..一种基于自适应滤波器的改进ip-iq无功电流检测方法[J].电测与仪表,2018,55(5):22-27,6.基金项目
河北省教育厅资助科研项目(ZD2016108) （ZD2016108）
