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Converter valve was the core equipment of HVDC power transmission project, followed by the three-phase AC voltage was connected to the DC side to get the desired DC voltage and realize the power of control, its value accounted for about converter station complete sets of equipment for a total of 22 ~ 25%. Take Hami-Zhengzhou ±800kV DC power transmission for example, air insulation, water cooling, and suspension type double valve structure. Double valve was the 2 single valve series connection, each single valve, including 4 valve module, each double valve was a total of 8 valve module, the structure of a valve tower. This paper introduced high-voltage 800kV HVDC project converter valve main body structure, and structure of converter valve tower, valve module, valve assembly was analyzed.

p800kV DC Power Transmission Converter Valve Structure Research