无源滤波装置的缺陷分析与改进方法  

Flaw Analysis and Improving Method of Passive Filter

作　　者：李璨[1] 杭乃善[1] 黄聪[1] 

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《电力学报》2011年第2期116-120,共5页Journal of Electric Power

摘　　要：为了解决电力系统非线性负载的增多导致谐波污染日益严重的问题,对目前国内外电力系统广泛采用的无源滤波器的缺陷进行了研究。当系统为非线性负载供电时,由于系统阻抗较小,滤波器上没有谐波压降产生,使滤波器上的电流基本上为正弦电流,导致了其滤波效果较差;经过串联电感的方法来增大系统阻抗,使谐波电流在电抗上产生谐波压降,有效的改善了无源滤波器的滤波器效果。这种改进方法高效、方便、简单、经济,易于在电力系统中推广使用。To sovle the problem that the increase of the Nonlinear loads in the Power System caused the harmonic pollution,study was carried out with the flaw of the passive filer which was adopted widely at home and abroad now-adays in the Power System.When the system supplied power to the Nonlinear loads,there were no Pressure Drops on the filer because of the litter impedance of the system,and there were basically sine current on the filer which caused the filtering result unsatisfactory.We could increase the impedance by using series inductance and made the harmonic current develop the Pressure Drops of the reactance to enhance the filtering result of passive filter.The method was efficient,easy to use,simple and economical,and was convenient for wide use.

关 键 词：电力系统 无源滤波装置 缺陷分析 改进方法 串联电感 

分 类 号：TN713[电子电信—电路与系统]