摘要
为了解决舟山群岛供电、海上风电送出等问题,规划设计了舟山5端柔性直流工程。舟山多端柔性直流输电重大科技示范工程是目前世界上在建的端数最多的柔性直流工程。为了满足柔性直流换流站启动、运行与控制、检修的需要,研究提出了柔性直流换流站的主接线方案。开展了柔性直流系统主回路参数研究,确定了换流站主设备和直流电缆的选型及主要技术参数、换流站运行功率范围。通过交、直流过电压研究提出了换流站过电压保护及绝缘配合方案。提出的柔性直流换流站主回路参数确定方法、绝缘配合方案、运行控制策略等形成了完整的柔性直流系统整体技术方案。提出了柔性直流系统设计的完整技术思路、设计方法及工具,为我国多端柔性直流技术发展及工程应用提供了有力支撑。
We designed a five-terminal VSC-HVDC system to realize and secure the power supply and oversea wind power transmission in Zhoushan islands. This pilot project is the multi-terminal VSC-HVDC with the most terminals under construction in the world. To meet the requirements of the start, control, and maintenance of VSC converter station, we studied and proposed the arrangement of the station＇s main circuit. Then through studying the parameters of this main circuit, we determined the types and parameters of main devices, the technical requirements of DC cable, and the operation parameters of each station. We also obtained the scheme of overvoltage protection and insulation coordination by analyzing the overvoltage in both AC and DC sides of the system. The proposed method and procedure of main circuit parameter＇s determination, the insulation coordination solution, and the control strategy constitutes the complete design solution of multi-terminal VSC-HVDC system. The presented integrated design method, including the tools required, provides a solid guidance in designing and promoting the multi-terminal VSC-HVDC systems.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2014年第8期2490-2496,共7页
High Voltage Engineering
关键词
柔性直流输电
系统设计
主接线方案
主回路参数
绝缘配合
主设备参数
VSC-HVDC transmission
system design
main circuit scheme
main circuit parameters
insulation coordination
main equipment parameters
