高压电器2023，Vol.59Issue(12)：63-74,12.DOI:10.13296/j.1001-1609.hva.2023.12.008
基于MMC的海上风电柔性直流送出控制策略研究
Research on Flexible DC Output Control Strategy for Offshore Wind Power Based on MMC
摘要
Abstract
With the development of large-capacity and long-distance offshore wind power both at home and abroad,the flexible DC output mode based on modular multilevel converter(MMC)has greater economic advantages.Based on the introduction of the working principle of MMC and the topology of offshore wind power flexible DC output,such core control strategies as active control of onshore converter station,passive control of offshore converter station,coor-dinated control of DC energy dissipation device of onshore converter station,coordinated control of dual-connection transformer of offshore converter station and system starting sequence control are proposed.By setting up a simula-tion test platform of offshore wind power flexible DC output control and protection system based on real time digital simulation system(RTDS),the simulation tests of MMC charging,MMC unlock,AC voltage increase on the power grid side of offshore converter station,grid connection of offshore wind power station,single connection transformer failure removal of offshore station,AC fault crossing on the power grid side and MMC block are performed respective-ly,which fully validates the correctness of the core control strategy of offshore wind power flexible DC output system and provides valuable reference to the future application of offshore wind power flexible DC transmission engineering.关键词
模块化多电平换流器/海上风电/柔性直流/控制策略/实时数字仿真系统Key words
modular multilevel converter/offshore wind power/flexible DC/control strategy/real time digital simulation system引用本文复制引用
宋延涛,范雪峰,吴庆范,刘旭辉,曹森,王大江..基于MMC的海上风电柔性直流送出控制策略研究[J].高压电器,2023,59(12):63-74,12.基金项目
国家电网有限公司总部科技项目(5200-202118077A-0-0-00).Project Supported by Science and Technology Project of the Headquarter of State Grid Corporation of China(5200-202118077A-0-0-00). （5200-202118077A-0-0-00）
