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文章摘要
基于隔离型DC/DC变换器的直流环网故障主动保护研究
Studies of active protection of fault of DC loop network based isolated DC/DC converter
Received:March 26, 2019  Revised:March 26, 2019
DOI：10.19753/j.issn1001-1390.2020.17.017
中文关键词: 直流环网故障  隔离型DC/DC变换器  直流系统  主动保护  安全运行
英文关键词: 
基金项目:国家电网有限公司总部科技项目“站用直流电源系统智能化技术研究”资助
Author NameAffiliation
李媛  
李希元  
曹子恒  
曲妍  
郎斌  
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中文摘要:
      在当前重要的中低压直流配电系统中，均采用两套独立的直流系统对设备进行供电，而直流环网故障则会导致两套系统发生一定的电气连接，严重危害了直流系统中的运行设备。针对直流环网故障，文章提出了一种基于隔离型DC/DC变换器的主动保护方案，即将变换器自身的结构优势应用在了直流系统的保护技术上，实现了对环网故障一系列的主动处理。该文首先阐述了环网故障的形成原因与危害，之后详细说明了主动保护的实现原理，分析了并联式变换器模块的控制策略，并且给出了环网故障的主动检测方案，最后通过仿真验证了该主动保护方案拥有良好的供电可靠性和故障隔离功能，最大程度保证了直流系统的安全运行。
英文摘要:
      
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