摘要
弧光接地是威胁电力电网安全运行的严重隐患.目前,常用的保护方法都有一定的缺点.提出了一种新的弧光接地保护方法,即基于微机控制的弧光接地保护.首先介绍了弧光保护的算法和微机保护的原理,然后利用M at-lab分别对M ayr电弧模型和金属故障进行仿真,比较了发生弧光故障和金属故障时线路电压的差别.此方法可快速地灭弧,因而可保证电力系统稳定运行.
Arc grounding is a hidden trouble that threatens electric power and distribution networks. At present, the frequently used methods still have certain shortcomings. This paper presents a new protective method which is based on micro-computer. Firstly,its principle and a numerical algorithm are presented. Then the mayr arc model and metallic fault are simulated by matlab respectively. It is concluded that voltage is different between arcing fault and metallic fault. This method can rapidly eliminate arc and make the system operated stably.
出处
《南昌大学学报（工科版）》
CAS
2007年第3期272-274,278,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
弧光接地
保护新方法
微机
数字算法
消弧线圈
arc grounding
new protective method
microcomputer-based
a numerical algorithm
arc suppres-sion coil
