Design and analysis of a cost effective power quality improvement method using De-tuned filter

S. Suresh, R. Gnanadass, N. Subramaniam
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引用次数: 1

Abstract

This paper presents the design and analysis of a cost effective power quality improvement method using de-tuned filters for an electric power distribution network. Analysis of the resonance at different harmonic components such as 5, 7, 11 and 13, as well as power factor (PF) improvement has been carried out by a capacitor bank. By connecting a capacitor bank will produces harmonics amplification, causes power disturbances in the network, continuous tripping of capacitor and finally failure of the capacitor. This harmonic amplification problem can be overcome by connecting a de-tuned filter in distribution network. The effect of the harmonic frequency on the fundamental will depends on the value of the detuned filter components such as inductance and capacitance. The value of the inductance and capacitance has been design such that the resonant frequency of the detuned filter will be less than the frequency of the selected harmonics. The two node distribution network with de-tuned filter has been developed using MATLAB-Simulink platform. The result of the proposed detuned filter for different operating condition of the distribution network has been presented.
采用反调谐滤波器的低成本电能质量改进方法的设计与分析
本文设计并分析了一种利用反调谐滤波器改善配电网电能质量的经济有效的方法。用一组电容对5、7、11、13等不同谐波分量的谐振进行了分析,并对功率因数进行了改进。通过连接电容器组会产生谐波放大,引起电网中的电力干扰,导致电容器不断跳闸,最终导致电容器失效。通过在配电网中加入反调谐滤波器,可以克服谐波放大的问题。谐波频率对基频的影响将取决于失谐滤波器元件如电感和电容的值。电感和电容的值被设计成使失谐滤波器的谐振频率小于所选谐波的频率。利用MATLAB-Simulink开发了带反调谐滤波器的双节点配电网。文中给出了该失谐滤波器在配电网不同运行工况下的应用结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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