高压直流输电系统直流滤波器综合设计

Integrated Design of DC Filter for HVDC Transmission System

直流滤波器作为高压直流输电(HVDC)工程的重要组成部分,对直流侧谐波和线路出口过电压具有良好的抑制作用。为了系统地介绍直流滤波器的综合设计方案,首先,从谐波成分入手,分析了装设直流滤波器的必要性;其次,根据阻抗-频率特性方程,推导出了单调谐和双调谐滤波器的参数计算公式;针对直流滤波器保护的特殊性,最后给出了滤波器保护的配置方案和CT配置原则。

DC filter project is an important part in the HVDC, it has a good good inhibitory efiect against the harmonic and line output voltage. In order to systematically introduce the integrated design of DC filter, Firstly, the necessity of the DC filter is analyzed. Secondly, according to the impedance-frequency characteristic equation, the formula of the single-tuned and double-tuned filter is deduced. For the special method of DC filter protection, At the end, the configuration scheme of filter protection and the principle of CT configuration are given.