直流微网混合式零电压开关直流断路器

发布时间：2018-06-23 11:04

本文选题：零电压开关 + 混合式直流断路器　；参考：《高电压技术》2015年09期

【摘要】：随着分布式电源技术的发展,直流微网是未来发展的新方向,应用于直流微网快速保护的直流断路器是推动微网发展的关键技术。为此根据直流微网的保护要求提出了一种快速保护的混合式零电压开关(ZVS)直流断路器总体方案,设计了混合式直流断路器的结构和控制系统,并对其关键技术:基于快速斥力机构的真空开关,IGBTs并联技术和限压技术展开了研究。最后基于Mayr电弧模型和真空开关电弧电压建立了ZVS混合式直流断路器的仿真模型,仿真得到了混合式断路器的电流转移特性和开断配合特性。最后根据研究结论,综合得到了400 V/2 500 A开断电流10 k A,闭合时间200μs,开断故障电流时间2 ms的混合式直流断路器总体方案。
[Abstract]:With the development of distributed power generation technology, DC microgrid is a new direction in the future. DC circuit breaker used in DC microgrid protection is the key technology to promote the development of microgrid. According to the protection requirements of DC microgrid, this paper presents an overall scheme of hybrid zero-voltage switch (ZVS) DC circuit breaker with fast protection, and designs the structure and control system of hybrid DC circuit breaker. The key technologies, such as vacuum switch IGBTs parallel connection and voltage limiting technology based on fast repulsive force mechanism, are studied. Finally, the simulation model of ZVS hybrid DC circuit breaker is established based on Mayr arc model and vacuum switch arc voltage. Finally, according to the conclusion of the study, the overall scheme of the hybrid DC circuit breaker with 400 V / 2 500A on-off current 10 Ka, closing time 200 渭 s and switching fault current time 2 Ms is obtained.
【作者单位】：大连理工大学电气工程学院;
【基金】：国家自然科学基金(51277020;51337001;51477024) 中央高校基本科研业务费专项基金(DUT13YQ102) 高等学校博士学科点专项科研基金(20120041110010)~~
【分类号】：TM561

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