架空线路并联保护间隙仿真建模分析研究  

Modeling and Analysis of Parallel Protection Gap of Overhead Line

作　　者：徐维南 XU Weinan(School of Mechanical and Electrical Engineering,Xichang University,Xichang 615013,China)

机构地区：[1]西昌学院机械与电气工程学院,四川西昌615013

出　　处：《电工技术》2020年第5期4-5,7,共3页Electric Engineering

摘　　要：为解决雷击输电线路所引起的跳闸停电事故,提出一种喷射气流灭弧防雷装置。介绍了该装置的运行原理,并通过多物理场仿真软件对气流熄灭电弧过程进行仿真。仿真结果显示,该装置能在1 ms内完全熄灭电弧,且电弧不会复燃。因继电保护响应时间为20 ms,故灭弧装置能在继电保护响应前熄灭电弧,防止断路器跳闸事故的发生。To solve the tripping outage caused by lightning strike transmission line.a kind of jet air flow arc lightning protection device was proposed.In this paper,the operation principle of the device was introduced in detail,and the process of air flow extinguishing was simulated by multi-physical field simulation software.The response time of relay protection was 20 ms,so the arc-extinguishing device could extinguish the arc before the relay protection response time,prevent the circuit breaker tripping accident.

关 键 词：停电事故 气流 继电保护 响应时间 跳闸事故 

分 类 号：TM862[电气工程—高电压与绝缘技术]