不同拓扑结构的换流器对启动特性影响

Influence of Converters with Different Topologies on Start-Up Characteristics

为了对昆柳龙输电工程中的启动电阻选型和系统启动策略提出建议。首先对柔性换流站的启动回路做了简介,然后对不同拓扑结构下的启动回路进行分析,得到了不同拓扑结构下的启动特性。最后针对昆柳龙输电工程中的柔性换流站,搭建了PSCAD/EMTDC模型对冲击能量进行仿真,得到的结果与理论计算均相符。根据仿真结果提出了对昆柳龙工程中柔性换流站启动电阻冲击吸收能量要求和系统启动建议。

In order to make suggestions on the selection of starting resistance and the starting strategy of in the Kunliulong transmission project.This paper first introduces the start-up circuit of the flexible converter station.Then the startup loops under different topologies are analyzed,and the startup characteristics under different topologies are obtained.Finally,for the flexible converter station in Kunliulong transmission project,a PSCAD/EMTDC model is built to simulate the impact energy,and the results obtained are consistent with theoretical calculations.According to the simulation results,the requirements for the starting resistance shock absorption energy of the flexible converter station in Kunliulong transmission project and the system starting suggestions are proposed.