基于瞬时功率理论的改进型谐波电流检测方法的研究  

An Improved Method Research of Detecting Harmonic Currents Based on Instantaneous Power Theory

作　　者：韦耀杰[1] 

机构地区：[1]平煤股份田庄选煤厂

出　　处：《变频器世界》2014年第8期50-53,共4页The World of Inverters

摘　　要：为了改善瞬时无功理论谐波检测方法的实时性、准确性,提出了一种改进型ip-iq检测法。该方法通过采用平均值算法,利用简单的积分、延时和增益环节代替了低通滤波器,将延时时间减小到了T/6,同时去掉了锁相环,进一步减小了延时,提高了检测的实时性。运用matlab/simulink搭建了仿真模型,仿真结果验证了该方法的可行性和有效性。In order to improve the real-time and accuracy of instantaneous reactive power theory harmonic-detection method, this paper proposed an improved ip-iq detecting method .This method by using average algorithm, replaced the lower-pass filter with simple integral, delay and gain links ,will reduce the delay-time to 1/6 cycle; and remove phase-lock loop ,further reduced the time delay to improve the real-time detection. Using matlab/simulink, the paper built simulation model, and the simulation results had verified the feasibility and validity of this method.

关 键 词：有源电力滤波器 谐波检测 低通滤波器 锁相环 

分 类 号：TM76[电气工程—电力系统及自动化]