摘要
针对民用建筑低压直流配用电系统的接地方式,从人体电流效应和接地故障电流量化分析的角度建立等效模型,研究典型接地方式的接地故障和电击事故特点以及安全防护要求;根据不同接地系统中直流剩余电流检测等技术的作用,结合相关技术和产品存在的问题,认为IT(高阻)接地方式更适合民用建筑低压直流配用电系统。
In this study,an equivalent current model quantifying the human body current effect and grounding fault current is designed for the different grounding types of low voltage direct current(LVDC) distribution network in the civil building.The grounding fault,electric shock accident characteristics and safety protection requirements of each grounding type are examined.According to the technical features and products maturity of electric safety protection measures,combined with the problems of related technologies and products,it is considered that IT high-resistance grounding is more suitable for LVDC distribution network of civil buildings.
作者
王旭婷
童亦斌
赵宇明
李雨桐
赵志刚
WANG Xuting;TONG Yibin;ZHAO Yuming;LI Yutong;ZHAO Zhigang(National Active Distribution Network Technology Research Center,Beijing Jiaotong University,Beijing 100044,China;Shenzhen Power Supply Company,Shenzhen 518020,China;Shenzhen Building Science ResearchInstitute,Shenzhen 518049,China;Zhuhai Gree Electric Appliances Company,Zhuhai 519070,China)
出处
《供用电》
2019年第9期52-58,共7页
Distribution & Utilization
基金
南方电网公司科技项目“基于直流的综合能源系统关键技术研究与应用”(090000KK52180116)~~
关键词
民用建筑
低压直流配电
接地方式
人体电流效应
接地故障
civil building
LVDC distribution network
grounding type
body current effect
grounding fault
