丁超,郭心铭,许烽,裘鹏,陆翌
DING Chao,GUO Xinming,XU Feng,QIU Peng,LU Yi

• 1:国网浙江省电力有限公司电力科学研究院
• 2:中国科学院电工研究所
• 3:中国科学院大学

摘要(Abstract)：

直流电网支路较多时，存在自由度不足以及直流断路器数量多、成本高的问题。为此，提出一种低成本的多端口直流断路器，其具有潮流调节功能及故障阻断功能，相较于其他同类型拓扑可有效降低器件数量与损耗。基于故障阻断功能与潮流控制功能的工作特点与交互影响，优化参数设计，提出一种拓展性强的潮流控制方式。通过与其他同类型拓扑结构的对比，验证了所提拓扑结构的经济性；应用MATLAB/Simulink搭建四端柔性直流输电系统模型，通过仿真验证了所提拓扑结构的可行性。
In view of insufficient degrees of freedom,large number of DC circuit breakers and high cost in multibranch DC power grid,this paper presents an economic multi-port DC circuit breaker with power flow regulation and fault blocking functions. Compared with other similar topologies,it can reduce the number and loss of devices.Based on the working characteristics and interaction of fault blocking and power flow control,the parameter design is optimized,and a power flow control mode with strong expansibility is proposed. Finally,the proposed topology scheme is compared with other similar topologies in detail to verify the economy of the topology. The feasibility of the topology is demonstrated by using Matlab/Simulink DC to build a four-terminal flexible DC transmission system.

关键词(KeyWords)： 直流电网;潮流控制;多端直流断路器;集成化;电容控制
DC power grid;power flow control;multi-terminal DC circuit breaker;integration;capacitance control

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目（5211DS21N003）

作者(Author): 丁超,郭心铭,许烽,裘鹏,陆翌
DING Chao,GUO Xinming,XU Feng,QIU Peng,LU Yi

DOI: 10.19585/j.zjdl.202207002

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