10kV不接地系统单相接地故障接地相判别分析  

Discrimination Analysis for Single-phase Ground Fault in 10kV Ungrounded System

作　　者：李飞 王文松 王能进 聂慧元 李成 Li Fei;Wang Wensong;Wang Nengjin;Nie Huiyuan;Li Cheng(Jinping Hydropower Station,Xichang 615000,Sichuan,China)

机构地区：[1]锦屏水力发电厂,四川西昌615000

出　　处：《四川电力技术》2020年第5期53-55,共3页Sichuan Electric Power Technology

摘　　要：采用电路理论分析以及数学公式推导,分析了10kV不接地系统单相接地故障时接地相特征,并通过一起实际事故案例,结合故障录波及CAD软件分析,提出一种新的判别不接地系统单相接地故障时接地相的方法。The circuit theory analysis and mathematical formula derivation are used to analyze the characteristics of single-phase ground fault in 10 k V ungrounded system. Combined with the analysis of fault recording and CAD software in a practical accident case,a new method of judging the fault phase for single-phase ground fault in 10 k V ungrounded system is proposed.

关 键 词：中性点不接地系统 向量分析 高阻接地 

分 类 号：TM73[电气工程—电力系统及自动化]