中频电炉的无源谐波滤波器设计并优化

针对中频电炉的无源谐波滤波装置的方法优化势在必行。文中主要从以下几方面着手研究:1)描述并分析现行的无源谐波滤波装置效率低下的原因;2)针对中频电炉和无源滤波装置之间的相关回路进行设计;3)分别对无源滤波装置在投入和切出这2种状态进行优化设计。优化过的无源滤波装置在中频电炉上进行使用已经被实验验证过是有效可行的。实验结果表明:此种无缘滤波装置的优化方法是可行的,并且极大地提高了谐波抑制效率。

无源动态谐波滤波器的仿真研究

针对大量非线性负载接入电网,使得消耗不平衡和谐波危害日趋严重的问题,根据无源动态谐波滤波器的拓扑结构,在Matlab/Simulink中建立了其系统仿真模型,并通过仿真分析验证了无源动态谐波滤波器具有调谐无功补偿和滤波功能,为无源动态谐波滤波器的样机设计奠定了基础。

交交变频滤波器的仿真研究

以某钢厂热连轧项目为背景,在Matlab/Simulink环境下利用其电力电子模型库,建立了三相交交变频同步电机滤波器系统仿真模型。根据仿真结果,分析了交交变频器谐波与变压器不同联结组别对交交变频器交流网侧输入电流的影响,给出有无滤波的网侧电流频谱,为交交变频装置交流网侧谐波治理滤波器设计分析提供了一种方法。

某气田谐波治理存在的问题及处理对策

某气田存在有源滤波器频繁报警和变频控制柜停机时存在运行电流的问题,逐渐找到产生问题的根源:有源滤波器负荷低和无源谐波滤波器向电网发送无功,并提出了相应的处理措施.

长钢800型钢精轧机传动系统谐波分析与治理方案

研究了长钢精轧机传动系统的谐波治理方案,在分析现有谐波治理方案和此系统产生的谐波特点的基础上,通过技术经济分析,选用混合有源电力滤波器来解决此系统的谐波问题,该方法具有成本低、能综合补偿电能质量的优点,仿真结果证明了该方法的有效性。

Optimum Design of Passive Shunt Filters for Power Distribution Networks

Static, passive, filters present an economic and simple solution to the harmonic distortion at the distribution level and at the same time supply the required reactive power for voltage support and/or power factor correction. Applying these filters to a distribution network, if not properly designed, may have an adverse effect on the network. This paper presents analysis of the effects of using passive harmonic filters in a power distribution networks. The driving point impedance at the node where the filter installed, as a measure of how harmonic currents would produce harmonic voltages, is determined as function of the filter parameters. Hence, effects of filter parameters on the system impedance, parallel resonant frequency and impedance at resonance are illustrated. The effects of using more than one filter are also examined. A method for the optimal design of a passive filter considering the component limits, harmonic distortion limits and parameter tolerances is also presented. The proposed optimization model has proved its effectiveness through application to measurements at a real distribution feeder.