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Contact Design of Arc Extinguishing Chamber in Virtual Platform of Mechanical DC Circuit Breaker

机译：机械式直流断路器虚拟平台灭弧室触头设计

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摘要

The DC circuit breaker is used to realize fault isolation and clearing of the DC system, and is an essential core equipment for the DC distribution network. The principle of the mechanical DC circuit breaker is to generate the medium frequency oscillating current by LC and reversely inject into the main circuit to form a current zero crossing point, and then complete the breaking by the AC circuit breaker. Since the design of the DC circuit breaker involves the design of the circuit topology, the design of the interrupter, the design of the operating mechanism, and the design of the final assembly. The process is very complicated and the workload is very large, and it is urgent to standardize, integrate and simplify the design process. This paper first analyzes the steps of mechanical DC circuit breaker design, and then plans the function of the virtual design platform according to the design steps. Finally, the method of contact design of the arc extinguishing chamber is described.
机译：直流断路器用于实现直流系统的故障隔离和清除，是直流配电网必不可少的核心设备。机械式直流断路器的原理是通过LC产生中频振荡电流，然后反向注入主电路以形成电流过零点，然后由交流断路器完成分断。由于直流断路器的设计涉及电路拓扑的设计，断路器的设计，操作机构的设计以及最终组件的设计。该过程非常复杂且工作量非常大，因此迫切需要标准化，集成和简化设计过程。本文首先分析了机械式直流断路器的设计步骤，然后根据设计步骤规划了虚拟设计平台的功能。最后，描述了灭弧室的接触设计方法。

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