模块化多电平变流器HVDC输电系统控制策略  

Control Strategy of Modular Multilevel Converters Based HVDC Transmission

作　　者：赵岩[1] 胡学浩[1] 汤广福[1] 贺之渊[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2011年第25期35-42,共8页Proceedings of the CSEE

摘　　要：建立模块化多电平变流器(modular multilevelconverters,MMC)的电磁暂态数学模型以及采用MMC为变流器的高压直流输电系统(high voltage direct current,HVDC)直流侧电压的动态数学模型。在此基础上,分析HVDC系统的直流侧电压动态特性,给出HVDC控制器参数协调设计原则和算法。最后,基于PSCAD/EMTDC的数字仿真结果证明了所提出的HVDC控制系统参数协调设计原则和算法的正确性。This paper built an electromagnetic transient mathematical model of modular multilevel converters （MMCs） and dynamic model of DC voltage in high voltage direct current （HVDC） transmission that adopts MMC as converter. Based on it, the dynamic characteristic of DC voltage in HVDC transmission was analyzed, and HVDC control system parameters coordinated design principles and its algorithm were proposed. Finally, the correctness of proposed submodule capacitor voltage balancing scheme, MMC based HVDC control system parameters coordinated design principles and its algorithm were verified by digital simulation based on PSCAD/EMTDC.

关 键 词：高压直流输电 模块化多电平变流器 直流电压波动 参数设计 

分 类 号：TM721[电气工程—电力系统及自动化]