配电网谐波治理及滤波器设计论文.pdfVIP

28 1 共 页，第 页 目 录 摘要1 前言2 1 配电网谐波治理及滤波器设计的研究现状4 1.2 滤波器研究现状7 2 无源滤波器原理及设计9 2.1无源滤波器的基本原理9 2.2无源滤波器设计概述12 2.3单调谐滤波器的设计15 2.4高通滤波器的设计19 3仿真研究20 3.1无源滤波器参数设计实例20 3.2 Matlab仿真22 3.3仿真结果及分析27 4结论27 参 考 文 献28 28 2 共 页，第 页 配电网谐波治理及滤波器设计 摘 要：谐波是怎样产生的？在理想纯净的电力系统中，电流和电压都是纯正弦波。实 际上，当电流流过与所加电压不呈线性关系的负载时，就形成非正弦电流。在只含线性 元件(电感、电容及电阻)的简单电路里，流过的电流与所加电压成正比，所以如果所加 的电压是正弦的话，流过的电流就是正弦的。用于谐波治理的传统方式为并联无源LC 滤波器，选定R、L、C的参数，使滤波网络在一定的谐波信号频率处产生谐振，从而达 到抑制谐波的目的。无源滤波器一般是由滤波电容器、电抗器和电阻器适当组合而成， 与谐波源并联，除起滤波作用外，还兼顾无功补偿的需要。Matlab软件中的simulink仿 真模块对谐波治理与滤波器设计具有重要帮助。 关键词：谐波治理；无功补偿；无源滤波器；Matlab；仿真 Abstract Abstract AAbbssttrraacctt：How does the harmonic generate? In the power system in the ideal of pure, pure sine wave of current and voltage. In fact, when the current flows through the load is not a linear relationship between the applied voltage, the formation of non-sinusoidal current.Simple circuit containing only linear components (inductors, capacitors and resistors), the current flowing through the voltage is proportional to the added voltage is sinusoidal, the flow of current is sinusoidal.The traditional way for parallel passive LC filter for harmonic control, selected the parameters of the R, L and C filter network resonant frequency harmonic signal so as to achieve the purpose of harmonic suppression.The passive filter is generally made by the appropriate combination of the filter capacitors, reactors and resistors in parallel, since the filtering effect, but also take into account the needs of the reac