民用低压直流供电系统接地方式安全量化分析  

Quantitative analysis of different grounding safety of residential low voltage DC power supply system

作　　者：童亦斌[1,2] 王旭婷 王静 刘毅 TONG Yibin;WANG Xuting;WANG Jing;LIU Yi(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China;National Active Distribution Network Technology Research Center,Beijing Jiaotong University,Beijing 100044,China;Shenzhen Power Supply Bureau Ltd.,Shenzhen Guangdong 518001,China)

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]北京交通大学国家能源主动配电网技术研发中心,北京100044 [3]深圳供电局有限公司,广东深圳5180011

出　　处：《北京交通大学学报》2020年第4期150-158,共9页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：南方电网公司项目(090000KK52180104)。

摘　　要：针对民用低压直流供电系统接地方式的选择,首先以人体电流效应为标准,梳理了触电事故的主要原因、影响因素和触电事故情形,结合常用安全防护措施的特点和局限性,分析了在TN接地方式和IT接地方式下典型触电事故的危险性.然后采用层次分析法建立系统安全防护性能量化评价指标;最后通过量化对比和分析,验证了在民用领域,相比TN接地方式,IT接地方式的安全防护性能更高.In view of the selection of the grounding types for residential Low Voltage DC(LVDC)power supply system,this paper takes the current effect on human body as the standard to sort out the main causes,influencing factors and circumstances of electric shock accidents.Combined with the characteristics and limitations of common safety protection measures,the risk of typical electric shock accidents in TN grounding system and IT grounding system is analyzed.Then Analytic Hierarchy Process(AHP)is used to establish the quantitative evaluation index for safety protection performance of the system.Finally,through quantitative comparison and analysis,it is verified that the IT grounding system has higher safety protection performance than the TN grounding system in the civil field.

关 键 词：低压直流供电系统 接地方式 用电安全 层次分析法 

分 类 号：TU85[建筑科学]