新型多端口直流潮流控制器及其控制策略研究  

Research on a novel multi-port DC power flow controller and its control strategies

作　　者：裘鹏 吴俊健 陆翌 余敬秋 徐政[2] 郭瀚临 QIU Peng;WU Junjian;LU Yi;YU Jingqiu;XU Zheng;GUO Hanin(State Grid Zhejiang Electric Power Co.,Ltd.Research Institute,Hangzhou 310014,China;College of Electircal Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,杭州310014 [2]浙江大学电气工程学院,杭州310027

出　　处：《浙江电力》2024年第7期86-93,共8页Zhejiang Electric Power

基　　金：国网浙江省电力有限公司科技项目(5211DS22000K);中央高校基本科研业务费专项资金资助项目(2021QNA4014)。

摘　　要：直流潮流控制器是实现多端直流电网稳态潮流调节的关键装备,针对现有直流潮流控制器的局限性,通过在环形支路中串入输出直流电压可调节的级联子模块的方式,设计了一种新型多端口直流潮流控制器。首先,对所提控制器的拓扑结构和工作原理进行了阐述;然后,介绍了其控制策略和参数选择方法;最后,通过一个具有八条直流线路的五端直流电网的电磁暂态仿真案例对直流潮流控制器的性能进行验证。结果表明:所提控制器能够同时调节同一直流母线所连接的多条直流线路上的潮流,具有模块化和易扩展的优势。A direct current power flow controller is a key device for regulating steady-state power flow in multiterminal DC(direct current)grids.In response to the limitations of existing DC power flow controllers,a novel multi-port DC power flow controller is designed by incorporating a cascaded submodules with adjustable DC output voltage in a circular branch.Firstly,the topology and operation principles of the proposed controller are explained.Then,its control strategies and parameter selection methods are introduced.Finally,the performance of the DC power flow controller is validated through electromagnetic transient simulations on a five-terminal DC grid with eight DC lines.The results indicate that the proposed controller can simultaneously regulate power flow on multiple DC lines connected to the same DC bus,demonstrating advantages of modularity and easy scalability.

关 键 词：多端直流电网 多端口直流潮流控制器 级联子模块 功率平衡 控制策略 

分 类 号：TM571[电气工程—电器] TM721.1