Abstract:

Zhoushan multi-terminals voltage source converter based high voltage direct current   （VSC-HVDC） project, with the most terminal number and the largest converter capacity in the world, will construct 5 ±200 kV converter stations with the total capacity of 1 000 MW, which are interlinked by cables. The complete design and key equipment of Zhoushan multi-terminals VSC-HVDC project were provided by China domestic company. The grid structure of Zhoushan will be enhanced and the reliability of power supply can be increased after the project being put into operation. This paper introduced the system scheme of Zhoushan VSC-HVDC project, including main connection of convertor station, operation modes, main circuit parameters, active and reactive power diagram, control and protection strategy, etc. The result has important reference value to the follow-up construction of high-capacity VSC-HVDC project in China.

Key words: Zhoushan, voltage source converter based high voltage direct current （VSC-HVDC）, multi-terminals, system scheme, voltage source converter