三峡直流工程直流谐波规范及滤波器型式要求

DC Harmonic Specification and Filter Type Requirement for Three Gorges DC Project

三峡电力外送规划中，拟采用两条５００ｋＶ直流输电线与华东联网，其输电距离、线路电压等级及走向均与葛南直流输电大体相同，对谐波干扰的控制而言，应有连贯性。鉴于葛南直流工程投产后发生直流谐波严重超标，为使三峡直流工程中避免类似情况出现，根据葛南工程经验和目前直流工程发展趋势，提出了三峡直流谐波的控制范围及滤波器选择时应注意的问题。

In electrical power planning of Three Gorges Project,two 500 kV DC lines will be adopted to connect with Huadong power network.Its transmission distance,voltage level and line direction are similar to Gezhouba Shanghai DC Project.The harmonic interference control standard should have continuity between the two project.For avoiding the same over specification phenomenon occured in Ge Shang DC system,a harmonic controlling scope and problems that should be considered in the filter selection for Three Gorges DC system according to Ge Shang project experiences and DC technological development.