摘要
为抑制模块化多电平换流器型直流输电(MMC-HVDC)系统启动时产生的过电压和过电流,有必要对该系统的启动控制策略进行设计。文章基于MMC-HVDC拓扑结构,研究了连接有源或无源网络MMC子模块电容充电方法以及限流电阻的配置方案,并由此分别提出了双端有源和向无源网络供电的MMC-HVDC系统的启动控制策略,仿真结果验证了所设计的启动控制策略的正确性。
In order to restrain overvoltage and over current which are produced during the startup process of MMC-HVDC, it is necessary to design startup control for MMC-HVDC system. Based on the topology structure of MMC-HVDC, the methods to charge sub- module＇ s capacitor of MMC connected source or passive network were studied, and the configuration scheme of limited resistors were designed, thus, startup control strategies for MMC-HVDC system connected two-source or passive network were put forward separately. Simulation results have proved the startup control strategies for MMC-HVDC system to be correct.
出处
《大功率变流技术》
2013年第5期37-43,共7页
HIGH POWER CONVERTER TECHNOLOGY
关键词
高压直流输电
模块化多电平换流器
启动控制
子模块电容充电
限流电阻
high voltage direct current（HVDC）
modular multilevel converter（MMC）
startup control
sub-module＇ s capacitor charging
limited resistor
