摘要
根据低压配电线路短路保护灵敏度要求,分析提高低压配电线路短路保护灵敏度的主要措施。利用现有国家标准图集19DX101-1《建筑电气常用数据》有关数据,推导出方便快速判定TN接地系统低压配电线路短路保护灵敏度能否满足要求的方法。
Based on the sensitivity requirements for short-circuit protection in low-voltage distribution lines,this article analyzes the main measures to improve theshort-circuit protection sensitivityyof low-voltage distribution lines.By utilizing the relevant data from the existing national standard atlas 19DX101-1 Common Data for Building Electrical Systems,a method is derived to conveniently and quickly determine whether the short-circuit protection sensitivity of TN earthing system in low-voltage distribution lines meets the requirements.
作者
林信坤
LIN Xinkun(Fujian Jiangong Prefabricated Research Institute Co.,Ltd.,Fuzhou 350001,China)
出处
《建筑电气》
2023年第8期16-20,共5页
Building Electricity
关键词
低压配电线路
单相短路
单相接地故障
短路保护灵敏度
树干式配电
链式配电
供电范围
等值阻抗
low-voltage distribution line
single-phase short circuit
single-phase earth fault
short-circuit protection sensitivity
decentralized distribution
loop distribution
power supply range
equivalentimpedance
