±800 kV特高压直流输电工程直流滤波器设计研究

介绍了直流输电工程采用的直流滤波器的类型与构成,分析了±800 kV特高压直流输电工程换流器在直流侧产生的谐波的特点,并与±500 kV高压直流输电工程做了比较。以实际的±800 kV特高压直流输电工程为例,对换流器在直流线路上产生的等效谐波干扰电流进行了计算,对不同直流滤波器设置方案下的滤波效果进行了比较,并以计算结果为依据提出了较为合理的±800 kV特高压直流输电工程直流滤波器设置方案,为最终确定实际工程直流滤波器方案具有一定的参考作用。

Design and Study on Filter in ±800 kV Ultra High Voltage Direct Current Transmission Project

This paper introduced DC filter used in high voltage direct current(HVDC) transmission project,analyzed harmonious characteristic on DC side produced by ±800 kV ultra high voltage direct current converter,and compared with that of ±500 kV HVDC project.Equivalent harmonious interfere current on DC transmission line,which produced by converter,was calculated by taking a practical example of UHVDC.The effects were compared as setting projects of filter were different.According to the calculated results,an appropriate setting project of UHVDC filter was presented as reference.