A high‐voltage direct‐current circuit breaker is a key equipment to construct a flexible direct current transmission system. Most of the existing design schemes have some shortcomings such as slow fault‐breaking speed, poor current‐limiting effect, large capacity of the arrester, and long reclosing operation time. To solve the above problems, this paper proposes an H‐type high‐voltage direct current circuit breaker with a current‐limiting function. The current‐limiting inductance is put into operation by judging the fault condition. It has good current‐limiting ability in the process of fault‐breaking and can maintain the dynamic performance of the power grid in the normal operation of the system. It has the advantages of fast fault‐breaking speed, buffered energy consumption, early separation of fault points, and small capacity of the arrester. During reclosing operation, the transfer branch can be turned on at no‐voltage. The different working states in the process of fault‐breaking are analyzed theoretically based on the description of the topological structure and working principle. Finally, using the PSCAD/EMTDC simulation platform, the functional verification and system verification of fault‐breaking and the reclosing operation process is conducted. Compared with the typical scheme, the simulation analysis shows the effectiveness and applicability of the function of fast fault‐breaking and fault current‐limiting. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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具有限流功能的H型高压直流断路器的拓扑及其控制策略

高压直流断路器是构建灵活的直流输电系统的关键设备。现有的大多数设计方案都有一些缺点，如断点速度慢，限流效果差，避雷器容量大，重合闸操作时间长等。为解决上述问题，本文提出了一种具有限流功能的H型高压直流断路器。通过判断故障条件，可以使限流电感投入运行。具有良好的断流限流能力，可以在系统正常运行中保持电网的动态性能。它的优点是：故障速度快，能耗降低，故障点尽早分离以及避雷器容量小。在重合闸操作期间，可以无电压打开传输分支。根据对拓扑结构和工作原理的描述，从理论上分析了断层过程中的不同工作状态。最后，使用PSCAD / EMTDC仿真平台，进行了故障和重合闸操作过程的功能验证和系统验证。与典型方案相比，仿真分析显示了快速断路和限流功能的有效性和适用性。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。根据对拓扑结构和工作原理的描述，从理论上分析了断层过程中的不同工作状态。最后，使用PSCAD / EMTDC仿真平台，进行了故障和重合闸操作过程的功能验证和系统验证。与典型方案相比，仿真分析显示了快速断路和限流功能的有效性和适用性。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。根据对拓扑结构和工作原理的描述，从理论上分析了断层过程中的不同工作状态。最后，使用PSCAD / EMTDC仿真平台，进行了故障和重合闸操作过程的功能验证和系统验证。与典型方案相比，仿真分析显示了快速断路和限流功能的有效性和适用性。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。仿真分析表明了该功能的快速故障和限流功能的有效性和适用性。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。仿真分析表明了该功能的快速故障和限流功能的有效性和适用性。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。