摘要
节能环保的低压直流供电方式在民用建筑等常规领域具有很大的应用潜能,保护与安全问题的解决是其推广的关键。相较传统交流系统而言,直流系统的保护面临着更多挑战,目前该方面的研究综述鲜见。本文尝试根据国内外已有的文献资料,从民用的角度出发,对低压直流供电系统中涉及电气安全的保护策略、短路电流计算、直流灭弧问题、电容放电问题、电击防护、末端过电流保护和负载保护的特殊要求等方面的研究现状做了一个较为全面的阐述。同时,提出了低压直流供电系统保护需要进一步解决的问题。
Low voltage direct current （LVDC） distribution systems have great potential application in conventional areas, such as residential buildings, and the promotion of LVDC is constrained by the lack of appropriate protection and security guarantees. Compared with traditional AC system, DC systems face more challenges, but related reviews are rare at present. This paper conducts a comprehensive overview regarding questions in electrical safety of LVDC distribution system, including protection scheme, short current calculation, de arc extinction, capacitor discharge, protection against electric shock, terminal over-current protection, and special requirement of load protection from the civil point of view. The issues needed more research works and discussions are also presented.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第22期133-143,共11页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51207174)
南方电网科技项目(K-YN2012-461)
关键词
低压直流供电系统
保护
电气安全
电击防护
短路
Low voltage direct current distribution system, protection, electrical safety, protectionagainst electric shock, short circuit
