海上柔性直流换流站阀厅布置及尺寸计算方法

Electrical Equipment Layout and Size Calculation Method of Valve Hall for the Offshore VSC-HVDC Converter Station

海上柔性直流换流站是大容量、远距离海上风电柔性直流输电送出工程的必备设施。基于海上柔性直流换流站电气主接线和阀厅电气设备型式,提出了海上柔性直流换流站阀厅电气设备布置方案,采用同极换流阀塔相邻布置,正、负桥臂分别布置在不同的阀厅,可较好地满足海上平台结构设计和建造要求。在此基础上,提出了海上柔性直流换流站阀厅的尺寸计算方法。该阀厅布置方案及尺寸计算方法可极大地减小海上柔性直流换流站阀厅和直流场的结构跨度,降低工程建造成本,对推进我国海上风电大规模集约开发与并网技术的发展具有重要意义。

Offshore VSC-HVDC converter stations are necessary facilities for large-capacity and long-distance offshore wind power VSC-HVDC transmission project.Based on the electrical wiring of the offshore VSC-HVDC converter station and the type of electrical equipment of valve hall,an advanced electrical equipment layout scheme of valve hall for the offshore VSC-HVDC converter station is proposed in this paper.The adjacent arrangement of three-phase bridge arms in the same pole and the positive and negative bridge arms are arranged in different valve hall respectively,which can better meet the requirements of offshore platform structure design and construction.On this basis,the valve hall size calculation method of typical offshore VSC-HVDC converter station is put forward in this paper.The electrical equipment layout scheme of valve hall and the valve hall size calculation method proposed in this paper can greatly reduce the valve hall size of offshore VSC-HVDC converter station and reduce the project cost.It is significance to promote the large-scale intensive development and grid connection technology of offshore wind power in China.