小电流接地系统故障选线方法综述  

Survey of the methods to select fault line in neutral point ineffectively grounded power system

作　　者：郭清滔[1] 吴田[2] 

机构地区：[1]福建省电力试验研究院,福建福州350007 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《电力系统保护与控制》2010年第2期146-152,共7页Power System Protection and Control

摘　　要：在我国3～66kV配电网中,广泛采用非直接接地系统,也就是小电流接地系统。而此类系统发生最多的是单相接地故障,如何快速准确地检测出故障线路一直是电力系统继电保护的重要研究课题。回顾了小电流接地系统单相接地故障选线方法发展的历史,对现有的各种选线原理和方法做了系统归纳和比较,提出尚需要解决的问题,并给出了几点结论。Neutral point ineffectively grounded power system is widely used in 3-66 kV power distribution system in China. In this power system, the single-phase-to-earth fault occurs frequently in distribution, thus how to detect the fault line with great accuracy and high efficiency is an important subject in protective relaying of power system. Reviewing the history of the methods to select the fault line in neutral point ineffectively grounded power system, this paper summarizes the existing theories of fault line selection and gives the conclusions.

关 键 词：小电流接地系统 故障选线 稳态算法 暂态算法 小波变换 人工智能 

分 类 号：TM862[电气工程—高电压与绝缘技术]