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高压电器  2015 

强制过零型高压直流断路器拓扑优化

DOI: 10.13296/j.1001-1609.hva.2015.11.009, PP. 53-58

Keywords: 高压直流断路器,直流开断,真空断路器,强制过零

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Abstract:

强制过零型直流断路器作为机械式高压直流断路器的主要研究方向,技术简单成熟,动作可靠性高。笔者基于实际直流电网,对直流断路器可能遇到的最严重故障即直流线路整流侧出口短路故障进行了仿真分析,并提出现有强制过零型直流断路器拓扑的两点缺陷。在此分析基础上,提出了在换流电容两端加装避雷器、在平波电抗器两端加装吸能组件的拓扑优化策略,能有效降低换流电容电压峰值和机械开关断口电压峰值。

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