高压直流输电双调谐滤波器阻尼电阻的选取原则

摘要

阻尼式双调谐滤波器广泛应用在高压直流工程中,其阻尼电阻的选择关系到滤波器的滤波效果和直流系统的运行性能.首先通过比较不同阻尼电阻下的滤波器阻抗频率特性,分析了阻尼电阻对滤波效果的影响；然后以某±800 kV特高压直流输电工程交流滤波器设计为例,考核不同阻尼电阻下滤波器的性能和稳态定值；最后基于性能指标和稳态定值要求的考虑,总结了电阻优化选择的基本原则和规律,对提高滤波器设计的效率、减少盲目性具有一定的工程指导意义.%Damping double-tuned filters are widely used in the high voltage direct current (HVDC) projects, and damping resistors' selection plays an important role for filtering effect and performance of the whole system. Firstly, impedance frequency characteristic of the double-tuned filter with different damping resistors is compared and influence of damping resistors on the filter is analyzed. Then, taking the filter design of a ±800 kV HVDC project for example, performance and steady rating results of filters under different damping resistors are evaluated. At last, the basic principles on selection of damping resistors based on performance and rating requirements are summarized, which effectively improve the efficiency of filter engineering design.